HomeMy WebLinkAboutINSTALLATION MANUAL TANKLESS GAS WATER HEATERM
AOWED
BY
Callejo Residence
Permit Number: 1801-0658
4..,
tl
N_
AV% mom NORITZ AMERICA
M00%noula CORPORATION
NC380-SV-ASME (Indoor/Outdoor Installation)
Potential dangers from accidents during installation and use are divided into the following three
categories. Closely observe these warnings, they are critical to -your safety.
&DA
�e^
1 VV �G R
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
Q
WARNING
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
Q
CAUTION.
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
WARNING: -If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Prohibited . Disconnect " Ground Be sure to do
C
Power 0
&CAUTION-1 ®o--
1
Requests to Installers
In order to use the water heater'safely, read this installation manual carefully, and follow the
installation instructions.
Failures and damage caused by erroneous work or work not as instructed in this manual are not
covered by the warranty.
Check that the installation was done properly in accordance with this Installation Manual upon
completion.
After completing installation, please either place this Installation Manual in a plastic pouch and
attach it to the side of the water heater (or the inside of the pipe cover or recess box if applicable),
or hand it to the customer to retain for future reference. Also, be sure to fill in all of the required 1
items on the warranty and to hand the warranty to the customer along with the Owner's Guide.
((jl N
SP
CERTIFIED0
Installation must conform with local codes, or in the absence
NSFof local codes, the National Fuel Gas Code, ANSI Z223.1 /
NFPA 54- latest edition and/or CSA B149.1, Natural Gas
and Propane Installation Code (NSCNGPIC).
Low NOx
WW, Approved by
rwM81HrrMmc,C00Wc SCAQMD
COMMCraes assOMON
Accepted For Use
City of New York
SBA8381 Department of Buildings
Rev. 09/09 M EA 19-03-E
Noritz America reserves the right to discontinue, or change
at any time, the designs and/or specifications of its products
without notice.PMU
opy
I I II I III I III I I IIIII Il III
*SBA8381
Part
Shape
MY
Part
Shape
Q'ty
Tapping Screw
5
Owner's Guide, Warranty,
Installation Manual
(this document)
1
each
Remote Controller
(See p. 21)
0
1
Remote Controller
Cord (loft)
1
Heat Exchanger
Inspection report
1
Part
Shape
Q'ty
Part
Shape
Q'ty
Outdoor Vent Cap
=
(VC-132)
1
System Controller
1.
Quick Connect Cord
1
Isolation Valves
(includes pressure
o
1
Remote Controller
Cord (26ft)
1
relief valve)
Remote Controller
Pipe Cover
Outdoor
1
(PC-4S-SUS)
1
Junction Box
• The Quick Connect Multi System allows the installation of two units together utilizing only the Quick
Connect Cord.
The Quick Connect Cord is 6 ft. long. Install the units 6-17" apart from each other to ensure the
cord will be able to reach between the units. (See Typical Plumbing diagram). B
(If the distance between the two units is too great, not only will the cord not be able to reach,
but the water temperature may also become unstable because of the difference in pipe length
between the two units).
System Diagram
Quick Connect Cord Cord
Cord Connector Connector
F
Typical Plumbing
Make this distance as short as possible. Relief
The hot water temperature will Valve
become unstable as the pipe
length increases.
` When connecting two units, use only a
single remote controller.
r - - - r_ r_ ® i
Terminal Block Note: Connect the remote
Remote Controller controller to only one
of the units.
Controller Cord
Cold Water
Hot Water
Distance at center: 25
Distance on sides
Gt 7 in.
l
Hot Water
Cold Water
Leave enough clearance around the plumbing Size the piping to allow for the maximum
to apply insulation. It will be necessary to add flow rates of the units.
bends to the piping to ensure that this
clearance is available.
• Insulate the hot water piping to prevent heat loss. Insulate and apply heating materials to the cold
water supply piping to prevent heat loss and freezing of pipes when exposed to excessively cold
temperatures.
( 'A! D'ANGER1
1
Checkup
• Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary.
j�t WARNING
Check the Gas
• Check that the rating plate indicates the
correct type of gas.
11lso c.aa mama, cw�mT vdwr, c�vrm ,�, NSF. Td'ra :lesa,.w�+es
• Check that the gas supply line is sized for
380,000 Btuh for this unit.
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VJm Gav PrvauadFmv4n Jo puanhde :ilb� 6-Yas10b'W.G
Mvsi.n Caanavw: :M M1O-Yu. 20'W.G
OY4i,�n :A°IA Vdt60h.I1�E1•I�np•�
.sc :W�. 13 pi-Yu.ISOpd
Check the Power
• The power supply required is 120VAC, at 60Hz.
Using the incorrect voltage may result in fire or electric shock.
Use Extreme Caution if Using With a Solar Pre -Heater
• Using this unit with a solar pre -heater can lead to unpredictable output temperatures and
possibly scalding. If absolutely necessary, use mixing valves to ensure output temperatures do
not get to scalding levels. Do not use a solar pre -heater with the quick -connect multi -system.
I A! CAUTION I
Do Not Use Equipment for Purposes Other Than Those Specified
• Do not use for other than increasing the temperature of the water supply, as unexpected accidents
may occur as a result.
Check Water Supply Quality
• If the water supply is in excess of 12 grains per gallon (200 mg/L) of hardness, acidic or otherwise
impure, treat the water with approved methods in order to ensure full warranty coverage.
0
Locate the appliance in an area where leakage from the unit or connections will not result in damage
to the area adjacent to the appliance or to the lower floors of the structure. When such locations
cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed
under the appliance. The pan must not restrict combustion air flow.
Y
• Install the exhaust vent so that there are no obstacles around the termination and so that
exhaust can't accumulate. Do not enclose the termination with corrugated metal or other
materials.
0 WARNING I
• Avoid places where fires are common, such as those where gasoline,
benzene and adhesives are handled, or places in which corrosive gases
(ammonia, chlorine, sulfur, ethylene compounds, acids) are present.
Using the incorrect voltage may result in fire or cracking.
• Avoid installation in places where dust or debris will accumulate.
Dust may block the air -supply opening, causing the performance of the
device fan to drop and incomplete combustion to occur as a result.
• Avoid installation in places where special chemical agents
(e.g., hair spray or spray detergent) are used.
Ignition failures and malfunction may occur as a result.
• Carbon Monoxide Poisoning Hazard. Do not install this water heater in a
mobile home, recreation vehicle or on a boat.
I A CAUTION I
• Install the water heater in a location where it is free from obstacles and stag-
nant air.
• Consult with the customer concerning the location of installation.
• Do not install the water heater near staircases or emergency exits.
• Do not install the water heater where the exhaust will blow on outer walls
or material not resistant to heat. Also consider the surrounding trees and
animals.
The heat and moisture from the water heater may cause discoloration of
walls and resinous materials, or corrosion of aluminum materials.
• Do not locate the vent termination directed towards a window or any other
structure which has glass or wired glass facing the termination.
Prohibited
rr
! CAUTION
• Avoid installation above gas ranges or stoves.
• Avoid installation between the kitchen fan and stove. If oily
fumes or a large amount of steam are present in the installation
location, take measures to prevent the fumes and steam from
entering in the equipment.
• Install in a location where the exhaust gas flow will not be
affected by fans or range hoods.
• Take care that noise and exhaust gas will not affect neighbors
Avoid installation on common walls as the unit will make some
operational noises while it is running.
• Make sure that the location allows installation of the exhaust
vent as specified.
• For outdoor installation, use the outdoor vent cap.
If it is necessary to vent above the roof line in an outdoor instal-
lation, use high temperature sealant around the flue collar for
rain protection. Prohibited
• Avoid installation where the unit will be exposed to excessive
winds.
• Before installing, make sure that the vent termination (or the vent
cap in an outdoor installation) will have the proper clearances
according to the National Fuel Gas Code (ANSI Z223.1).
State of California: The water heater must be braced, anchored or strapped to avoid moving during an
earthquake. Contact local utilities for code requirements in your area or call: 1-866-766-7489 and request
instructions.
The Commonwealth of Massachusetts: The water heater can be used for hot water only and not in a
combination of domestic and space heating.
For Venting Manufacturers Requirements, see websites or phone numbers listed below:
Noritz N-Vent
www.noritz.com
0
Before installing, check for the following:
Install in accordance with relevant building and mechanical codes, as well as any local, state or
national regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSI
Z223.1/NFPA 54 — latest edition. In Canada, see NSCNGPIC for detailed requirements.
Item Check Illustration
• Maintain the following clearance from
both combustible and non-combustible
materials.
CO12" or more(Indoor)
° 36" or more(Outdoor)
U
C L
a)
L
co cz
U = 4" or more(Indoor)
o o 24" or more(Outdoor)
L L
5 LL
Cr
6" or more(Indoor)
24" or more(Outdoor)
• If the unit will be installed in the vicinity of a
permanent kitchen range or stove that has
a the possibility of generating steam that
E contains fats or oils, use a dividing plate or Exhaust hood
=3 other measure to ensure that the unit is not
w exposed to air containing such impurities.
Dividing plate Water
o * The dividing plate should be of noncombust- heater
v ible material of a width greater than the
water heater. FRange
• If possible, leave 8" or more on either \\ \ \ \ I / / / Z/
side of the unit to facilitate inspection.
3" or more
o If possible, leave 24" or more in front of
a) o the unit to facilitate maintenance I g or;itiM 3" or more
c�>M
Q a and service if necessary. more,7;
cn Q `<
g" or
° If possible, leave 3" or more above and
more
below the vent pipe to facilitate inspec- 24" or
tion and repair if necessary more
c�
(unit: inch)
Y
Clearance Requirements from Vent Terminations to Building Openings
* All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code,
ANSI Z223.1 and in Canada, in accordance with NSCNGPIC.
ly°EErAu.
f
A �HI_
® I afro .r
arcaA� BI �®
�F I K
OV Vent Terminal Area Where Terminal
® Air Supply Inlet ® is Not Permitted
()= indicates clearances required in Canada
*Maintain clearances in accordance with local installation codes and the requirements of the gas supplier
***A vent shall not terminate directly above a sidewalk or paved driveway that is located between two
single family dwellings and serves both dwellings.
****Permitted only if veranda,porch,deck,or balcony is fully open on a minimum of two sides beneath the floor.
Clearance
Indoor Installation
Outdoor Installation
See .9
See .9
A-
Above grade, veranda, porch, deck,
or balcony
12" (12„)
12" (12")
4' below or to the side of
g=
Window or door that may be opened
opening, or 1' above opening
12" (36")
(36")
C=
Permanently closed window
*
Vertical clearance to ventilated soffit
�=
located above the terminal within a
,
horizontal distance of 2 feet from the
center of the terminal
E=
Unventilated soffit
*
F=
Outside corner
*
G=
Inside corner
hi-
Each side of center line extended
3' within a height 15' above
3' within a height 15' above
above meter/regulator assembly
meter/regulator assembly
meter/regulator assembly
1=
Service regulator vent outlet
3'
3'
Nonmechanical air supply inlet or
4' below or to the side of
J=
combustion air inlet to any other
opening, or 1' above opening
12" (36")
appliance
36"
K=
Mechanical air supply inlet
3' above if within 10' 6'
3' above if within 10' 6'
L_
Above paved sidewalk or paved
driveway located on public property
M=
Under veranda, porch, deck, or
balcony
(12"_ Canada Only****)
* (12"- Canada Only*'**)
Clearance Requirements from Vent Terminations to Building Openings
* All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code,
ANSI Z223.1 and in Canada, in accordance with NSCNGPIC.
Maintain the following clearances to any
Illustration
opening in any building:
• 4' below, 4' horizontally from, or 1' above
any door, operable window, or gravity air
•L
inlet into any building.
❑ ❑
3' above any forced air inlet within 10'.
16
a)
� 0
4'
� c
CO
a'
41
1T O
�
1
a
0 i 3'
®o
U
c
�p
a�
>
• 1' below, 1' horizontally from, or 1' above
any door, operable window, or gravity air
c
inlet into any building.
�'v
3' above any forced air inlet within 10'.
� a
aD >
• For outdoor installation, use the outdoor
_ (Z
vent cap.
} �,
If it is necessary to vent above the roof line
1 i
in an outdoor installation, also use the base
;n
of the vent cap for rain protection.
1'
0L] L)
o O� 3'
ns
(Z0
Ua_�i
o0 00
00 00
00 00
o0 0�
>
(Moritz vent cap)
* For Installations in Canada, clearances are as follows: To windows, doors, & gravity air inlets: 36".
To forced air inlets: 6'. These clearance requirements hold true for all of the above situations: Indoor,
Outdoor w/vent cap.
Q
Securing to the wall
• The weight of the device will be applied to the wall. If the strength of the wall is not suffi-
cient, reinforcement must be done to prevent the transfer of vibration.
0 • Do not drop or apply unnecessary force to the device when installing. Internal parts may
Be sure to do be damaged and may become highly dangerous.
• Install the unit on a vertical wall and ensure that it is level.
Item
Check
Illustration
QCAUTION
Location of Screw Hole
• When installing with bare hands, take caution to
Mounting Bracket .
a
not inflict injury.
(upper)
_
• Be careful not to hit electrical wiring, gas, or water
3
piping while drilling holes.
\�
U
W
1. Drill a single screw hole, making sure to hit a stud.
�
2. Insert and tighten the screw and hang the unit by
.a
othe
upper wall mounting bracket.
3. Determine the positions for the remaining four screws
(two for the top bracket and two for the bottom), and
remove the unit.
Locating Screw Holes
4. Drill holes for the remaining four. screws.
Tapping Screw a
5. Hang the unit again by the first screw, and then
of -
a,
insert and tighten the remaining four screws.
_
•• '`` (9
6. Take waterproofing measures so that water does
not enter the building from screws mounting the
device.
\ 0
Make sure the unit is installed securely so that it will
not fall or move due to vibrations or earthquakes.
i
CO
10
I A!iWARNING
0 CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Be sure to do Z233.1/NFPA 54 — latest edition, and in Canada, in accordance with NSCNGPI.
Vent Piping
• Noritz N-Vent is suggested for the vent system.
If N-Vent is not used, a UL listed category III vent
system must be used.
• Follow the vent pipe manufacturer's installation
instructions.
Pipe diameter 5"
No. of Elbows
Max. Straight Vent Length*
3
15'
2
30'
1 1
45'
* Not including the termination.
• Make the vertical section of the exhaust vent
as short as possible. `
• Maintain the same vent pipe diameter from the
heater flue to the vent termination.
Clearances
Manufacturer and-
Enclosed
Unenclosed
Product
Hor.
Vert.
Hor.
Vert.
Noritz N-Vent
10- (sides)
1Q1oP)W
6"
3"
1 3"
6m)
Clearances vary by manufacturer, refer to the UL
approved clearances when using materials other
than N-Vent.
• The first vertical run from the top of the heater
should be no longer than 3'.
• Make sure vent pipe is gas tight and will not
leak. Use silicon sealant wherever necessary.
• Do not common vent or connect more than
one appliance to this venting system.
• The total vent length including horizontal &
vertical vent runs should be no less than 3'.
• Do not store hazardous or flammable sub-
stances near the vent termination and check
that the termination is not blocked in any way.
• Steam or condensed water may come out
from the vent termination. Select the location
for the termination so as to prevent injury or
property damage.
• If snow is expected to accumulate, take care
the end of the pipe, is not covered with snow or
hit by falling lumps of snow.
• Consult the vent pipe manufacturer's install-
ation instructions for chimney connections.
Appliance Adapters
When using a vent system other than N-Vent,
an appliance adapter will be required to properly
connect the vent to this appliance. Consult the
manufacturer's instructions for the proper appli-
ance adapter.
11
Horizontal Vent Termination
OZZ1U i
• Terminate at least 12" above grade or
- -
above snow line.
Hanger - -
Straps - -
• Terminate at least 7' above a public walk -
Elbow I —
way, 6' from the combustion air intake of
Wall - -
Termination any appliance, and 3' from any other
Slope vent Thimble = =
building opening, gas utility meter, ser-
f Downwards = -
vice regulator etc.
Terminate at least 3' above any forced air
i **I'Min. - 3' Max. _ =
inlet within 10', 4' below, 4' horizontally
Appliance = =
from or 1' above any door, window, or
Adapter* - -
gravity air inlet into any building per National
Fuel Gas Code ANSI Z223.1 /NFPA 54.
' Adapter not required when = = I
using Noritz N-Vent. _ _ I
�
• Slope the horizontal vent 1 /4" downwards
• 1'minimum recommended, _ _
but not required. Avoid installing
for every 12" toward the termination.
elbow directly on flue.
• Use a condensation drain if necessary.
•
• In the Commonwealth of Massachusetts
a carbon monoxide detector is required
for all side wall horizontally vented gas
fuel equipment. Please refer to Technical
Bulletin TB 010606 for full installation in -
Vertical Vent Termination
structions.
Rain
Storm Cap
Collar Roof
Flashing
• Terminate at least 6' from the combustion air
intake of any appliance, and 3' from any
Roof
Jack
g opening,. other building o y
p g,. gas utility meter, service
regulator etc.
Rrestop/
Support
• Enclose exterior vent systems below the roof
line to limit condensation and protect against
- - mechanical failure.
- - When the vent penetrates a floor or ceiling and
_ = is not running in a fire rated shaft, a firestop and
_ = support is required.
When the vent termination is located not less
_ = than 8' from a vertical wall or similar obstruc-
tion, terminate above the roof at least 2', but not
Hanger Firestop
_ more than 6% in accordance with the National
-=
Strap
- Fuel Gas Code ANSI Z223.1/NFPA 54.
Elbow
_
Provide vertical support every 12' or as required
_ = by the vent pipe manufacturer's instructions.
Condensation
Drain (Install
- - Slope the horizontal vent 1 /4" for ever 12" to-
_ _ p y
"1' Min. - 3' Max. According to
- - wards the drain tee.
Local Codes)
Appliance
A short horizontal section is recommended to
- -
Adapter'
_ = prevent debris from falling into the water heater.
•Adapter not required when
— — • Install a condensation drain in the horizontal
using "°'"z""e"`
section of the venting. For installations in tight
•' 1' minimum recommended.
butnotrequired.Avoidlnstalling
—
_ spades where there Is not enough room to in-
elbowdirectly onflue.
- - stall two elbows and a horizontal drain tee, a
• ' ' vertical drain tee may be substituted.
12
Combustion Air Supply combustion air to the units as per the National Fuel Gas Code, ANSI Z223.1 and
in Canada, in accordance with NSCNGPIC.
• Provide two permanent openings to allow
circulation of combustion air.
14"
• Make each opening 380 square inches if they I
provide indoor air, and 100 square inches for
outdoor air.
• If the unit is installed in a mechanical closet,
provide a 24" clearance in front of the unit to
the door.
• If combustion air will be provided through a
duct, size the duct to provide 100 cubic feet of
fresh air per minute.
Openings supplying indoor air
13
The appliance and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).
The Appliance must be isolated from the gas supply piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2
psig (3.5 kPa).
The appliance and its gas connections must be leak tested before placing the appliance in operation.
The inlet gas pressure must be within the range specified. This is for the purposes of input adjustment.
In order to choose the proper size for the gas line, consult local codes or the National Fuel Gas Code ANSI
Z223.1.
Gas Pressure
Size the gas line according to total btuh demand
of the building and length from the meter or
regulator so that the following supply pressures
are available even at maximum demand:
Natural Gas Supply Pressure
Min. 5" WC
Max. 10.5" WC
LP Gas Supply Pressure
Min. 10.5" WC
Max. 14" WC
Gas Meter
Select a gas meter capable of supplying the entire
btuh demand of all gas appliances in the building.
Gas Connection
• Do not use piping with a diameter smaller than
the inlet diameter of the water heater.
• Gas flex lines are not recommended unless they
are rated for 380,000 btuh.
Install a gas shutoff valve on the supply line.
Use only approved gas piping materials.
Measuring Gas Pressure
In order to check the gas supply pressure to the unit, a
tap is provided on the gas inlet. Remove the hex head
philips screw from the tap, and connect a manometer
using a silicon tube.
In order to check the gas manifold pressure, a pair of
taps are provided on the gas valve inside the unit.
The pressure can be checked either by removing the hex
head philips screw and connecting a manometer with a
silicon tube, or by removing the 1/8" NPT screw with an
allen wrench and connecting the appropriate pressure
gauge.
Sample Gas Line
NoritzTankless Gas Water Heater
(380,000 Btuh) Barbecue
Outlet E
I (50,000 Btuh)
I
Outlet A
Clothes Dryer
10, (35,000 Bluh)
Outlet C I 10,
Section 4 Section 3 Section 2 i Section 1 I
—51— —51— —51— 10'
I
t I a'
Natural Gas
Meter
Outlet D' 1 Outlet B'
Gas Fireplace Gas Range Stove
(25,000 Btuh) (65,000 Btuh)
"See next page for the pipe capacity charts.
Instructions
1. Size each outlet branch starting from the furthest
using the Btuh required and the length from the
meter.
2. Size each section of the main line using the
length to the'furthest outlet and the Btuh
required by everything after that section.
Sample Calculation
Outlet A: 45' (Use 50'), 50,000 Btuh requires 1/2"
Outlet 8: 40', 65,000 Btuh requires 112"
Section 1: 45' (Use 50'), 115,000 Btuh requires 3/4"
Outlet C: 30', 35,000 Btuh requires 1/2"
Section 2:45' (Use 50'), 150,000 Btuh requires 314"
Outlet D: 25' (Use 30'), 25,000 Btuh requires 1/2"
Section 3: 45' (Use 50'), 175,000 Btuh requires 1"
Outlet E:25' (Use 30'), 380,000 Btuh requires 1-1/4"
Section 4: 45' (Use 50'), 555,000 Btuh requires 1-1/4"
14
Gas Line Sizing for a Noritz Tankless Gas Water Heater
Adapted from UPC 1997
Maximum Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop)
Pipe
Length in Feet
Size
10,
20'
30'
40'
50'
60'
70'
80,
90,
100,
125'
1/2"
174
119
96
82
73
66
61
56
53
50
44
3/4"
363
249
200
171
152
138
127
118
111
104
93
1"
684
470
377
323
286
259
239
222
208
197
174
1 1/4"
1404
965
775
663
588
532
490
456
428
404
358
1 1/2'
2103
1 1445
1161
993
880
798
734
683
641
605
536
2"
4050
1 2784
2235
1 1913
1696
1536
1413
1315
1234
1165
1033
2 112'
6455
4437
3563
3049
2703
2449
2253
2096
1966
1857
1646
3"
11,412
7843
6299
5391
4778
4329
3983
3705
3476
3284
2910
31/2'
16,709
11,484
9222
7893
6995
6338
5831
5425
5090
4808
4261
4"
23,277
15,998
12,847
10,995
9745
8830
8123
7557
7091
6698
5936
Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas. 1000 BTU/Cubic Ft. is a Typical Value
Maximum Liquified Petroleum (Undiluted) Delivery Capacity in Thousands of Btuh (0.5" WC Pressure Drop)
Pipe
. Len
th in Feet
Size
10'
20'
30'
40'
50'
60'
1 70'
80'
1 90'
100'
125'
150'
200'
1/2"
275
189
152
129
114
103
96
89
83
78
69
63
55
3/4"
567
393
315
267
237
217
196
185
173
162
146
132
112
1"
1071
732
590
504
448
409
378
346
322
307
275
252
213
11/4"
2205
1496
1212
1039
913
834
771
724
677
630
567
511
440
11112-1
3307
2299
1858
1559
1417
1275
1181
1086
1023
976
866
787
675
2"
6221
-4331
3465
2992
2646
2394
22 55
2047
1921
1811
1606 1
1496 1
1260
For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
Maximum Capacity of Flex TracPipe® in Cubic Feet per Hour of Natural Gas (0.60 specific Gravity, 0.5" WC Pressure Drop)
Pipe
Len th in Feet
Size
10,
20'
30,
40'
1 50'
60'
1 70'
80'
1 90'
100'
150'
200'
3/4"
206
147
121
105
94
86
80
75
71
67
55
48
1"
383
269
218
188
168
153
141
132
125
118
94
82
11/4"
614
418
334
284
251
227
209
194
181
171
137
116
11/2"
1261
888
723
625
559
509
471
440
415
393
320
277
2" 1
2934
2078
1698
1472
1317
1.203
1114
1042
983
933
762 1
66-1771
Maximum Caoacitv of Flex TracPipe® in Thousands of Btuh Liauified Petroleum r G.5" WC PressurA nrnnl
Pipe
Len th
in Feet
Size
10,
20'
30'
40'
50'
60'
70'
1 80'
90,
100,
150'
200'
3/4"
325
232
191
166
149
136
126
118
112
106
87
76
1"
605
425
344
297
265
241
222
208
197
186
143
129
11/4'
971
661
528
449
397
359
330
307
286
270
217
183
11/2'
1993
1404
1143
988
884
805
745
696
656
621
506
438
2" 1
4638
3285
2664
1 2327
2082
1902
1761
1647
1554
1475
1205
1045
For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
TracPipeQ is a registered trademark of Omega Flex.
Maximum Capacity for Gas Flex Connectors in Cubic Feet per Hour of Natural Gas (0.60 specific Gravity, 0.5" WC Pressure Drop)
Pipe
Len th
in Inches
Size
12"
24"
36"
48"
60"
72"
1/2"
180
150
125
106
93
86
3/4"
—
290
255
215
197
173
581
512
442
397
347
11/4"
—
1470
1200
1130
960
930
Maximum Capacity for Gas Flex Connectors in Thousands of Btuh Liquified Petroleum f 0.5" WC Pressure Drool
Pipe
Len th in Inches
Size
12"
24"
36"
48"
60"
72"
1/2"
288
240
200
169
149
137
3/4"
—
465
409
344
315
278
1"
—
930
825
708
638
556
11/4"
—
2352
1920
1808
1536
1488
"" For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
15
This appliance is suitable for potable water and space heating applications. Do not use this appliance if any part has
been underwater. Immediately call a qualified service technician to inspect the appliance and replace any part of the
control system and gas control which has been under water.
If the water heater is installed in a closed water supply system, such as one having a backflow preventer in the cold
water supply line, means shall be provided to control thermal expansion. Contact the water supplier or a local plumb-
ing inspector on how to control this situation.
A pressure relief valve must be installed near the hot water outlet that is rated in accordance with and complying with
either The Standard for Relief Valves and Automatic Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22, or
The ANSI/ASME Boiler and Pressure Vessel Code, Section IV ( Heating Boilers ): This pressure relief valve must
be capable of an hourly Btu rated temperature steam discharge of 380,000 Btuh. Multiple valves may be used. The
pressure relief capacity must not exceed 150 psig. No valve shall be placed between the relief valve and the water
heater. The relief valve must be installed such that the discharge will be conducted to a suitable place for disposal
when relief occurs. No reducing coupling or other restriction may be installed in the discharge line. The discharge line
must be installed to allow complete drainage of both the valve and the line. If this unit is installed with a separate
storage vessel, the separate vessel must have its own temperature and pressure relief valve. This valve must also
comply with The Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI
Z21.22. (in the U.S. only). A temperature relief valve is not required, but if one is used, do not install the valve with the
probe directly in the flow of water. This may cause unwarranted discharge of the valve.
Piping and components connected to the water heater shall be suitable for use with potable water.
Toxic chemicals, such as those used for boiler treatment, shall not be introduced into the potable water.
A water heater used to supply potable water may not be connected to any heating system or components previously
used with a nonpotable water heating appliance.
When water is required in one part of the system at a higher temperature than in the rest of the system, means such
as a mixing valve shall be installed to temper the water to reduce the scald hazard.
• Flush water through the pipe to clean out metal powder, sand and dirt before connecting it.
• Perform, the following insulation measures for prevention of freezing.
• Take appropriate heat insulation measures (e.g., wrapping with heat
insulation materials, using electric heaters) according to the climate of • •• •-.-__.._.._ ;_•",••,,,"•" •_•
the region to prevent the pipe from freezing. "" ""'_"" •••---•- -—••---•----•---
• Make sure that there are no water leaks from the cold and hot water ••�•• ""'•"'"_"""""_"'
supply pipes, then insulate the pipes completely. "•-
• Be sure to also completely insulate the water supply valve and the
cold and hot water connections on the water heater (refer to the figure ..._� _......_"_..� .�.
on the right).
• Do not cover the water drain plug with insulation so that water in the
pipe can be drained. (Refer to the figure in the right.)
• Use a union coupling or flexible pipe for connecting the pipes to reduce the force applied to the piping.
• Do not use piping with a diameter smaller than the coupling.
• When feed water pressure is too high, insert a depressurizing valve, or take water hammer prevention measure.
• Avoid using joints as much as possible to keep the piping simple.
• Avoid piping in which an air holdup can occur.
• If installing the unit on a roof:
• About lower -level hot water supply
If the unit is installed on a roof to supply water to the levels below, make sure that the water pressure supplied to
the unit does not drop below 29 psi. It may be necessary to install a pump system to ensure that the water pressure
is maintained at this level.
Check the pressure before putting the unit into operation.
Failure to supply the proper pressure to the unit may result in noisy operation, shorter lifetime of the unit, and may
cause the unit to shut down frequently.
Supply water piping
• Do not use PVC, iron, or any piping which has been
treated with chromates, boiler seal or other chemicals.
• Mount a check valve and a shut off valve (near the inlet).
• In order for the client to use the water heater
comfortably, 98.1 to 491 kPa (14 to 70 PSI) of
pressure is needed from the water supply.
Be sure to check the water pressure. If the water
pressure is low, the water heater cannot perform
to its full capability, and may become a source of
trouble for the client.
Drain piping
• Expansion water may drop from the pressure
prevention device and wet the floor. If neces-
sary, provide drain piping or use a drain hose to
remove the water.
Hot water piping
• Do not use lead, PVC, iron or any piping which
has been treated with chromates, boiler seal or
other chemicals.
• The longer the piping, the greater the heat loss.
Try to make the piping as short as possible.
• Use mixing valves with low water resistance. Use
shower heads with low pressure loss.
If necessary, use a pump or other means to en-
sure that the supply water pressure to the inlet of
the heater does not fall below 29 PSI when the
maximum amount of water is being demanded.
Also install a pressure meter on the inlet. If this is
not done, local boiling will occur inside the water
heater causing abnormal sounds and decreasing
the durability of the heat exchanger.
17
Water Treatment
If this water heater will be installed in an application where the supply water is hard, the water must be
treated with either a water softener, which removes the hardness, or by using sequestering agents, such
as the Noritz Scale Shield, that reduce the amount of scale deposits. Refer to the below tables for sug-
gested treatment and maintenance measures to be taken based on the water hardness level. Damage to
the water heater as a result of water in excess of 12 gpg (200 mg/L) of hardness is not covered by the
Noritz America Limited Warranty.
Note: When installing a water softener, consult with the manufacturer for proper sizing and installation
guidelines; the below diagram is for reference only. For more information about Scale Shield, contact
Noritz America at 866-766-7489.
Residential Use Treatment Guidelines
Hardness
Treatment
Flush
Type of Water
Level
Device
Frequency*
Soft
m9/L)
None
None
(0-1-7
Slightly Hard
gmg/L)
None
None
(17 51
Moderately
Hard
3-7 gpg
(51-120 mg/L)
ScaleShield
Once a Year
Hard
7-1gpg
(120-171 mg/L)
ScaleShield
Once a Year
Very Hard
10-14 gpg
Water
Softener
(171-239 mg/L)
Softener
Required
Extremely
> 14 gpg
Water
Softener
Hard
(> 239 mg/L)
Softener
Required
* Install Noritz Isolation Valves to allow for flushing.
Commercial Use Treatment Guidelines
Hardness
Treatment
Flush
Type of Water
Level
Device
I Frequency*
Soft
(Oaf mg )
None
None
Slightly Hard
17- 3 gpg/L
None
None
Moderately
3-7 gpg
Water
Hard
(51-120 mg/L)
Softener
Once a Year"
Suggested
Hard
7-10 gpg
(120-171 mg/L)
Water
Softener
Twice a Year**
Suggested
Very Hard
10-14 gpg
Water
Softener
(171-239 mg/L)
Softener
Required
Extremely
> i4 gpg
Water
Softener
Hard
(> 239 mg/L)
Softener
Required
*Install Noritz Isolation Valves to allow for flushing.
"Flushing is required if a water softener is not installed.
Water Treatment System
Shutoff Valve
i IXIo Cold to Water City Water Supply
Q Heater
i
o
Zo
i
ouuuu°nunooca000000
; 000°ounnnuonoonnn°n
°°°°'°°°°' Optional Sediment
oou000n0000°00000uo
i Filter
Pressure
Relief Shutoff Valve
Valve D4
Water Treatment Device
Hot Water to Fixtures
Drain —►
I O
•
r
NORs G
Tankless Gas
Cold Water Supply
Water Heater
i
oe
u
�
i
Isolation
u
u
Kit('4) i u
i u
i
q
EGas Supply
Aqquastat('3)
IL
Pump Control Signal
Recirculation System
Notes:
1. Size the pump to provide a maximum of 2 GPM
through the system at 10 It of head plus piping
Hot Water Return
losses.
Adjust the flow using a globe valve and verify the
flow rate with the maintenance monitors.
2. Pump Control Signal is the preferred method
to control the recirculation pump.
Fixtures
For pumps larger than 85W, a relay connection must
be used. If the Pump Control Signal is not used,
an Aquastat may be used to control the pump.
3. Use an Aquastat if the water heater is not control-
ling the pump.
Set the Aquastat to 10°F below the set output
Expansion Tank
temperature.
(Install according
4. Noritz recommends the use of an Isolation Kit
to local code)
with the installation.
These kits include an integrated shut-off and serv-
ice valve with unions and a pressure relief valve.
Globe
Valve
Relay for Pump
(ii larger than 85 Wafts) Optional 8-10 Gallon
n Storage Tank
�J (To alleviate cold water
Hot Water
Aquastat Wiring
Use Honeywell Aquastat
(Model L6006A or 1-6006C)
Combination Potable Water and Space Heating System
I
NORITZ
j
Tankless Gas
Water Heater
Pump('2)
Isolation i
j
_ _
Kit('i)
i
Check
i o o j
Valve('3)
--
O I--�— Gas Supply
Notes:
1. Nortz recommends the use of an Isolation Kt with
the installation.
These kits include an integrated shut-off and serv-
ice valve with unions and a pressure relief valve.
2. Size the pump to provide a maximum of 3 GPM
Air Handler with a head pressure equal to the loss through the
water heater and Air Handler.
3. Check valve required if it is not included with the
pump.
4. Set the flow switch to deactivate the Air Handler
when the domestic hot water flow reaches 3 GPM.
Adjust as necessary to prevent cycling.
5. If the system requires water for space heating at
a higher temperature than for other uses, means
such as a mixing valve shall be provided to temper
the water for the other uses to help prevent scald
-ing.
j 6. Expansion tank required if a backflow, preventer is
installed.
i
i
1
Flow Switch('4) Backflow Preventer
(optional) Cold Water
Optional Supply
Expansion Tank('6)
Mixing Valve('5)
Hot Water
Fixtures
19
Do not connect electrical power to the unit until all electrical wiring has been completed.
Disconnect Power
This appliance must be electrically grounded in accordance with local codes, or in the absence of local codes,
with the National Electrical Code, ANSI/NFPA 70..In Canada, the latest CSA C22.1 Electrical Code.
Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper
and dangerous operation.
Verify proper operation after servicing.
Field wiring to be performed at time of appliance installation.
I A! WARNING
Electrical Shock Hazard
Do not turn power on until electrical wiring is -finished. Disconnect power before servicing.
Failure to do so may result in death or serious injury from electrical shock.
• The electrical supply required by the water heater is ;
Do not let the power cord contact the
120VAC at 60 Hz.
gas piping.
The power consumption may be up to 355W or higher if
using optional accessories.
Tie the redundant power cord out -
Use an appropriate circuit. ;
side the water heater. Putting the
• Do not disconnect the power supply when not in use. When
redundant length of cord inside the
the power is off, the freeze prevention in the water heater ,
water heater may cause electrical
will not activate, resulting in possible freezing damage.
interference and faulty operation.
Ground
• To prevent electrical shock, provide a ground
with resistance less than 1000 . An electrician
should do this work.
• A grounding screw is provided on the back in
the junction box.
Do not connect the ground to the city water '
or gas piping. Do not tie the ground to a tele-
phone line.
Breaker Installation
• Mount a device which shuts off the electrical
path automatically (leakage breaker) when
electrical leakage is detected.
Ground
Power Cord
1. Unscrew the junction box and slide it out of the unit.
2. Push the power cord through the bottom of the unit.
3. Connect the live and neutral wires to the black and
white wire in the junction box.
4.Screw the ground wire to the ground screw on the
back in the junction box and replace the junction box.
ACAUTIO"IN
Electrostatic discharge can affect electronic components. Take precautions to prevent electrostatic discharges from
personnel or hand tools during the water heater installation and servicing to protect product's electronic control.
20
Remote Controller
• Applicable Model
Noritz Tankless Gas Water Heater
Remote controller RC-7649M
Install the remote controller according to the instructions in the Installation Guide (p. 31).
The Noritz Tankless Gas Water Heater can be programmed so that it will default to one of four tempera-
tures if the remote controller is removed (180, 140, 130, 1200F). To change the default temperature, the
remote controller must be initially installed, and removed after programming.
* Changing the default temperature setting:
1. Within the first ten minutes of connecting electrical power to the unit, but before pressing the
Power On/Off button, hit the up [A] or down [®] button on the remote controller. This will put
the unit into maintenance writer mode. If pressing either of these buttons does not put the unit
into maintenance writer mode, unplug the unit for sixty seconds and try again.
2. The maintenance monitor item number will flash on the display. (the initial item number will be "99").
3. The up [A] and down [V] buttons can be used to change the maintenance writer item number.
4. Choose a temperature from the chart below and set the 14 and 15 maintenance writers according to
the chart. Pressing the Flow Meter Alarm Set button for 0.5 seconds will switch the indicated item
number from "OFF" to "ON" or "ON" to "OFF". If the Priority lamp is flashing when an item number
is displayed, this indicates an "ON" setting for that item number, and if the Priority lamp is off, the
item number is off.
*Do not change the other item numbers. This may cause a fault in the water heater.
5. After setting the 14 and 15 item numbers for the desired temperature, press and hold the up [®]
and down [®] buttons together for five seconds to confirm the new settings. The remote control-
ler will emit a tone when the settings are confirmed. If this is not done, the unit will not put the
setting changes into effect. After confirming the setting, remove the remote controller to initiate
the default temperature setting.
Note:The setting changes can be cancelled by pressing the Power On/Off button before confirming the
settings, or if the unit is left alone for ten minutes without confirming the settings. If the default
setting needs to be changed again, disconnect the electrical power to the unit, reconnect it and
follow this procedure again.
Temp. Item No.
14.
15
180OF
ON
ON
140OF
OFF
ON
130OF
ON
OFF
120°F*
OFF
OFF
* Factory Default Setting
&WAHNING -----------
When changing the temperature, make sure to confirm with the customer that the temperature of
the hot water will be very high and that there is a risk of scalding.
Water temperatures above 1250F can cause severe burns or death from scalding.
!®®®o®®.o®®®®�®®®®®®®®®®®®®®®®®®®®®®�
21
Connecting Remote Controller Cord to Unit
• Keep the remote controller cord away from the freeze prevention heaters in the unit. B
• Tie the redundant cord outside the water heater. Do not put the extra length inside the equipment.
• The remote controller cord can be extended up to 300' with 18AWG wire.
' • Use a Y type terminal with a resin sleeve. (Without the sleeve, the copper wire may corrode and
cause problems).
• Be sure to hand tighten when screwing to the terminal block. Power tools may cause damage to the
terminal block.
Remote controller cord
• For extensions, a 26' cord can be purchased (Part # RC-CORD26) or use 18AWG wire.
• Install according to the National Electrical Code and all applicable local codes.
1. Leave enough slack so that the remote controller
cord will not be damaged if the unit is removed from Terminal
the wall. Block
2. Remove the front cover of the heater (4 screws).
3. Pass the remote controller cord through the wiring Clamp
throughway and into the unit.
4. Connect the Y terminals at the end of the remote
controller cord to the terminal block.
5. Secure the remote controller cord with a clamp. Wiring
6. Replace the front cover. Throughways
18AWG Wire
22
Pump Wirin "This feature is not available when using the Quick Connect
g Multi System feature.
Connecting the pump control wire
1. Leave enough slack so that the pump control wires
will stay connected if the unit is removed from the
wall.
2. Remove the front cover of the heater (4 screws).
3. Cut off the connector at the end of the pump
control wires.
4. Wire the pump control wires through the wiring
throughway and connect them to the wiring inside
the pump (this will be the power supply for the pump,
do not also connect 120VAC to the pump).
If a large pump is being used (greater than 85W) use
the voltage from these wires as the signal to close a
normally open relay through which 120VAC will be
supplied directly from a wall circuit to the pump.
5. Replace the front cover.
Relay connection with larger pumps (>85 W)
I
Pump Control
Wire Tag
Crimping Terminal
Wiring
Throughway
Supplies Power for
Circulating Pump
(Use a Relay for
Larger Pumps)
1. Locate and prepare the pump control wires as described above.
2. Choose a suitable installation location for the relay where it will be protected from moisturg.
3. Connect the pump control wires from the heater to the signal input on the relay.
4. Cut one of the electrical supply leads and wire it across the open terminals of the relay.
5. Secure all connections and replace the front cover of the heater.
120VAC
Connect to Pump Conti
Wires in Unit
;lay (ex. Omron G7L2ABUBJCBAC120)
23
Connecting Quick Connect Cord For Quick Connect Multi System Installation
use a Quick Connect Cord (sold separately).
Caution -----------------------------
The®®®®__®®®®®®®®®_®®®®®®®®®®®®-
The wire coloring on the Quick Connect Cord will
not be the same as the wire coloring of the
f connection plug inside the unit.
,.Red ,.Red
,.White ,.Red
The remote be to
2 Black* z.WhiteBlack
Black
2.Red 2.Whit
controller can connected either
3*White
3.White 3.White
3.Red 3.White
unit A or B.
4.Green 4.Green
4.Black 4.Green
5.Blue 5.Blue
5.Blue 5.Blue
6.Blue 6.Blue
6.Blue 6.Blue
F"'
7
AL7
B
Quick Connect
' Cord
\Zza
ilck Connect Cord" tag
Connecting the Quick Connect Cord to the two
units.
1. Turn off the power.
2. Remove the front cover of the heater (4 screws).
3. Pass the Quick Connect Cord through the wiring
throughway and into the unit.
4. Plug the connector on the Quick Connect Cord to
the receptacle inside the unit.
5. Attach the ground wire of the Quick Connect
Cord to the terminal block fixing plate.
(If the ground wire is not attached, electrical
noise may cause problems).
6. Secure the Quick Connect Cord with a clamp.
7. Replace the front cover.
Connector � III' 1 o I I At=
Ground wire / v o 0
Connector
Clamp
Wiring Throughway / Coupling Cord
0
• The venting system must be examined periodically by a qualified service technician to check for
any leaks or corrosion.
• The burner flame must be checked periodically for a proper blue color and consistency.
• If the flame does not appear normal, the burner may need to be cleaned.
• If the burner needs to be cleaned, it must be performed by a qualified service technician.
• Do not obstruct the flow of combustion and ventilation air.
• The pressure relief valve must be operated once a year to ensure that it is functioning properly
and there is no obstruction. Turn the power off to the unit before opening the relief valve, and
make sure that water draining out of the valve will not cause any damage.
• If the relief valve discharges periodically, it may be due to thermal expansion in a closed water
system. Contact the water supplier or a local plumbing inspector on how to correct this situation.
Do not plug the relief valve.
• See Operation Manual for further maintenance.
Warning: There is a scald potential if the output temperature is set too high.
Should overheating occur, or the gas supply fail to shut off, turn off the manual gas control valve to the appliance.
Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas control
which has been under water.
Periodically check and clean the filter inside the cold water inlet of the unit.
• Preparation ........... (1) Open a hot water fixture to confirm that water is available, and then close
the fixture.
(2) Open the gas supply valve.
(3) Turn on the power supply. Using the remote controller, turn on the Power
On/Off button (the Operation lamp will turn on).
(1) Open a hot water fixture and confirm that the Burner On lamp comes on, and that hot water is
being produced. (If necessary, repeat until the air in the gas piping is bled out).
* White smoke may be noticed from the exhaust vent during cold weather. However, this is not a
malfunction of the unit.
* If an 1 V error code appears on the remote controller, turn the unit off and then back on again,
and then open a hot water fixture again.
(2) Change the temperature setting on the remote controller and check that the water temperature changes.
• If the water heater does not operate normally, refer to "Troubleshooting" in the Operation Manual.
* After the trial operation, clean the filter in the cold water inlet.
<If installed with a quick connect multi -system>
• Turn the system power ON with the remote controller.
• Slowly open a hot water fixture and check that the units ignite sequentially. Check to see that the
hot water temperature is the same as the temperature displayed on the remote controller (*1)
* If both units do not ignite, switch which unit will ignite first by pressing the Max. or Min. Mani -fold
Pressure Set Button on the circuit board. (*2)
Unit A Ignites
Unit B Doesn't Ignite
Press Max. or Min. Manifold
Pressure Set Button on Unit B
Unit A Doesn't Ignite I
Unit B Ignites
* If an 11 or F11 error code flashes on the remote controller, hit the Power Button on the remote
controller off and on 2 -3 times.
* If (*1) and (*2) cannot be done, the Quick Connect Cord may not be properly connected.
Check that the cord is properly connected.
25
Handling after trial operation
• If the unit will not be used immediately, close off all gas and water shutoff valves, drain all of
the water out of the unit and the plumbing system to prevent the unit and system from freezing,
and bleed the gas out of the gas line.
Freezing is not covered by the warranty.
Q! WARNING I
A fire or explosion may result if these instructions are not followed, which may cause lose of
life, personal injury or property damage.
Lighting Instructions
This water heater does not have a pilot. It is equipped with an ignition device that automatically lights
the burner.
Do not try to light the burner by hand.
1. Read the safety *information in the installation manual or on the front of the water heater.
2. Turn off all electrical power to the unit.
3. Do not attempt to light the burner by hand.
4. Turn the gas control manual valve (external to the unit) clockwise to the off position.
5. Wait five minutes to clear out any gas. If the smell of gas remains, stop, and follow the instructions
on page 3 of Owner's Guide.
6. Turn the gas control manual valve counterclockwise to the on position.
7. Turn on electric power to the unit.
8. The unit will now operate whenever hot water is called for. If the unit will not operate, follow the
shutdown instructions and call a service technician.
Shutdown Instructions
1. Stop any water demand.
2. Turn off electric power.
3. Turn the gas control manual valve clockwise to the off position.
Should overheating occur, or the gas supply fail to shut off, turn off the manual control valve to the appliance.
26
s
t
(VIEW FROM TOP)
'
4-13 2e
..10 OBLONG
HEIGHT OF EACH FITTING
FROM BOTTOM OF CASE
HOTWATER OUTLET x.0
COLD WATER INLET 3.4'
GAS INLET x.e'
HOT WATER OUTLET
WIRING THROUGHWAYS
WIRING THROUGHWAYS
m
WATER DRAIN VALVE
WATER DRAIN VALVE
GAS INLET
COLD WATER INLET(WATER FILTER
A. Installation without a recirculation system System Controller
Unit Disconnect this Connector
Unit No.6 Unit No.2 No.i • Disconnect this
connector
on units 2-6 also
S stem Select Cneonnector
Do not conct to
I the connector.
• • • Remote Controller
Gas pipe
Li G�
Hot Water Pipe
(1 1/4' 2-)
Cold Water Supoy Pi e
(1 1/4' 2-)
• Insulate or apply heating materials to both the cold water supply piping and the hot water piping to
prevent freezing during cold weather and to prevent heat loss through the piping.
27
r O
116
S stem Controller
Unit 6 Unit 2 Unit 1 Disconnect this Connector .
' Also disconnect this connector on units 2-6
System select connector
Connect to the "Recirculation System"
0 connector.
Remote Controller
Pum Connection Wire for pumps
,' > 85 W, use an external relay)
— — — — 1 --- ; When installing 2 pumps in parallel
' Set dipswitch 3 to "OFF".
(See SC-201-6M Installation Manual)
i
Gas Pi e
Expansion i - - ` - - - - - -Circulation Pum 1 � Water supply (1 1/4"-2")
Hot Water(1 1 /4%2') Tank `� ' Size the water supply piping to
allow for maximum flow rates
' ' of the units.
------ ---------- - - - - - -
Hot Water Return Line (3/4"-1 1/411)
Size the pump to provide at least 2 GPM @ 10 feet of head + piping losses through the system.
Check the maintenance monitors on the unit to make sure the pump is providing adequate flow.
Hot water Make sure that the flow rate is not greater than 4 ft./sec.
Supply (3/4": 5 GPM, 1 1/4": 13 GPM)
If the flow is too low, the recirculation loop temperature will not be warm enough, if the flow is too
high, the lifetime of the unit will be reduced.
* If there are multiple circulation loops, try to make the flow rate .75-1.25 GPM in each loop.
* Use copper or stainless water piping for the entire system.
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' Also disconnect this
Unit 6 Unit 2 Unit 1
connector on units 2-6
:-The system controller will stop the units from heating when the tank is up to temperature,
I and the unit will cut the flow through it to 2.5 GPM.
t
I Install the plumbing so that a change in flow will not damage the pump.
System select connector
---------------------------------
When installin 2 um s in arallel Thermostat - _ - _ _ _ - -
Connect to the "Sto-
rage system"
' Set dlpswltch 3 to OFF.
(See SC-201-GM Installation Manual)
If the tank thermostat will control Ina pump
connector"
set dlpswltch 2 to OFF.
(See SC-201-SM Installation Manual)
Remote
Do not connect more than one pump to the
Controller
tank thermostat.
_
Optic 2-unit
Relief Valve
Option 1-Tank
Conbol
Thermbnal 0anbol
Storage tank return line
(1 1/4"-2")
(Copper or Stainless Pipe)
Storage tank supply line
(1 1/4"-2')
(Copper or Stainless Pipe)
'i— — — — — — — — — — — I
— Pump Control I
Wires (use '
external relay) ; Gas Pipe
I
� Slora a Tank Ciraiafon Pump 2 - � — — — 1
r (Ihe�ssary ,
Storage Tank Cirtaxaibn Pump 1 _ — —
Hot Water
Storage Tank
Hot water supply line
(Copper or Stainless Pipe)
pump
Hot water return line
(Copper or Stainless Pipe)
Cold Water Supply
Site the water supply piping to
allow for maximum flow rates
oI the building.
For the set temperature of the remote control, use the temperature (of the thermostat) + about 10°F.
' To achieve the highest recovery, size the storage tank circulation pump for maximum capacity.
( 12 GPM (each) @ 50 ft. of head (160OF setting or less) + piping losses through the system). Verify the supply
pressure to the units is at least 30 PSI.
Hot Water
Supply
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Multi -System Wiring (Use SC-201-6M)
Connect these to the
remote control terminal
block in each unit
Remote control
terminal block
Remote Controller Cord
Disconnect this
Connector
Remote Control
terminal block
Remote Controller Cord
Disconnect this
Connector
Remote control
terminal block
Remote Controller Cord
Unit 1
Disconnect this
System Controller Connector
90190 II 89 PCB
Li Power
DPSW PCB
EP
-----
Remote
System select connectors
Unit 2
Units 3-6
PCB
Power
PCB
PCB
Power
PCB
The remote controller terminal
location may differ depending
on the unit.
k The connector location may
be slightly different on the
actual circuit boards than in
these illustrations.
30
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For Installers:
Remote Controller RC-7649M Read this installation guide
carefully before carrying out
installation.
Instal lati0ft n Guide NORITtaMERICACORPORATION
r Note------o—®oo®—_—.o®__ ®j
Do not connect power to the water_heater before the remote controller has been properly installed.
Recommended installation location of the remote controller is in a bathroom.
Included Parts List
Part Name
Remote Controller 1
Wall Packing 1
Phillips Roundhead Wood Screw 2
Wall Anchor 2
Do not disassemble the remote controller.
Lam® ® v ® � � � o A
Notes on the Installation Location
• The remote should be installed in an easily
accessible location.
• Avoid installing in a place where water or
steam can come into contact with the
controller.
• Avoid locations where special chemical
agents (e.g., benzene, fatty and oily deter-
gents) are used.
• Avoid outdoor installation, or installation in an
indoor location where it will be exposed to
direct sunlight.
Wall Packing
Remote Controller
Connecting Wire
Phillips Roundhead
Wood Screw
Q
Wall Anchor
Connection of Remote Controller Cord
White Connector ITo Remote controller
Y-shaped terminals ITo Water heater
(two -core)
Confirm the connection with the labels at
both ends of the remote controller cord.
• A 26' cord can be purchased separately
(Part # RC-CORD26).
• The remote controller cord can be ex-
tended up to 300 ft. by splicing the cord
and using 18 gauge wire to extend the
cord to the appropriate length.
31
Installation
1. Apply Wall Packing to the rear side of the
remote controller.
2. Connect the remote controller wires to the
separate remote controller cord.
Remote
Control
_ Wires
Wall Packing
(take off the paper)
Remote Controller Cord Rear Side of
Remote Controller
3. Remove the cover of the remote control,
mark the location of the screw holes, and
drill holes for the wall anchors.
4. Insert the wall anchors, screw the remote
control to the wall and replace the cover.
Phillips Roundhead
Wood Screw
32
Installing the Remote Controller Outdoor Junction Box
1. Insert the remote controller wires through the 5. Slide the box nut over the remote controller
wall pipe and secure the wall pipe to the wires and screw it onto the wall pipe.
remote controller. Locate the remote controller
wall packing, slide it over the pipe and wires, Wall Pipe /
and apply it to the rear side of the remote.
Rear side of remote controller
Box Nut
0
0 o: Remote
Wall Packing / Controller
Secure the wall pipe Wires
firmly into the remote
controller.
Take off the
paper.
2. Drill a ;61-114" hole in the wall where the 6. Connect the remote controller wires to the
remote controller will be installed. separate remote controller cord inside the box.
Wind the excess remote controller wire on the
* Do not install the remote controller in a provided hooks as illustrated below.
location that is exposed to moisture, direct (Wind the
sunlight, or chemical agents. These can excess wire
damage the remote controller. here.)
Remote Controller
Wires
3. Insert the wall pipe containing the remote
Junction Box
controller wires through the hole.
4. Slide the junction box packing and the junction
box over the remote controller wires and wall Remote Controller
pipe protruding from the outside wall. Cord
Wall packing Wall pipe
Tie the redundant length of the remote
Take out the pipe about controller cord outside the junction box.
3/4" from the wall.
Junction Box
7. Close the junction box.
Box Nut
Remote
Controller
Wires
y /
Take off the paper.
Junction Box Packing
33