Rinnai R85i Installation Instructions Manual

* For clearances not specified in ANSI Z223.1 / NFPA 54 or CAN/CGA­B149, please use clearances in accordance with local installation codes
and the requirement of the gas supplier.
** 4 feet for units other than Direct-Vent Appliance.

1

10) Thread the cable through the access hole at the base of the unit and
connect the wires to the controller terminals on the right hand side
bottom of the PCB.

11) Secure the controller cable using the clamp provided.

12) Replace plastic cover over PCB and then replace the front cover of the
Rinnai Water Heater.

Suggested temperatures are:

Kitchen 120°F - 130°F, Shower 98°F - 110°F, Bath fill 102°F - 114°F
These temperatures are suggestions only. You may find higher or lower
temperatures more comfortable. Maintaining lower temperatures helps
save energy. To obtain water temperatures lower than 98°F, simply add
cold water.
Deluxe Controllers are an optional extra. ‘Controller’ and ‘Deluxe’
Controllers can be installed together. Controllers allow temperature
selection only. ‘Deluxe’ Controllers have temperature selection, bath fill and
clock functions.
Controllers allow the water temperature to be set from the various
locations where they are installed. The temperature selected will be
available to all outlets. Below are the combination of Controllers that are
offered by Rinnai:

Controllers Combination Pattern

**See controller manual in controller carton box for more infomation detail.

Water Smart / Bath Fill Temperature Table

2

□ The vent pipe has a negative slope/grade to the outside of three
degrees (3°) or 5/8" per foot of vent pipe. If the vent pipe is sloped back
towards the appliance as some code may require, provisions SHALL
be made to collect all condensation to drain off and away from the
appliance to a proper drain source. See local code for details.


□ You have no more than three bends in your vent system and the length

does not exceed Rinnai specifications.

Thesettingsbelow arefactorydefault settings.Pleaseensure themodel
numberand gastype oftheunityouhave, matchesthe modelnumber
and gas type listed below; before settings any switches. If youneed
assistance,contactRinnaiat[phone]beforeproceeding.

WARNING

In appropriate Dip Switch setting can damage the Rinnai water heater and
may void the warranty of this unit

9. Set the Infinity to ‘Forced Low’ combustion by setting No.7 dip switch of
the (SW1) set of dip switches to ‘ON’.(Fig.3).

10. Check the burner test point pressure.

11. Remove rubber access plug and adjust the regulator screw on the
modulating valve (Fig.4) as required in Table 1. Replace rubber access
plug.

12. Set the Rinnai Water Heater to ‘Forced High’ combustion by setting
both No. 7 and No. 8 dip switches of the bottom (SW1) set to ‘ON’.
(Fig.5). Ensure maximum water flow !

13. Check the burner test point pressure.

14. Adjust the high pressure Potentiometer (POT) on the Printed Circuit
Board (PCB) as required to the pressure shown in Table 1.

IMPORTANT: Set dip switches 7 and 8 on the bottom (SW1) to ‘OFF’
to return the appliance to 'Normal' combustion. (Fig. 6).

15. Close hot water tap.

16. Turn ‘OFF’ the gas supply and 120V power supply.

17. Remove pressure gauge & replacing sealing screw.

18. Turn ‘ON’ the gas supply and 120V power supply.

19. Operate unit and check for gas leaks at test point.

20. Replace the front cover of the appliance.

3

4

Top of Heater
Back of Heater
Front of Heater
Sides of Heater
Floor
Vent/Air Intake

6 inches
0 inch
6 inches
2 inches
12 inches
0 inch

INSTALLER'S INSTALLATION INSTRUCTIONS

Remote Controllers- General

The remote controls for the Rinnai Water Heater allow the customer to
control the functions of the water heater and to diagnose certain fault
conditions.

Before installing the remote controllers, determine the most convenient
location(s).
When deciding on the best location for the remote controllers, please
consider the
following items:

1) Place the controllers out of reach of small children.

2) Avoid locations where the controller(s) will become hot. (over the stove,
near the oven or a radiant heater.

3) Avoid direct sunlight. (The digital monitor can be difficult to read in
direct sunlight)

4) Avoid areas where the remote can be splashed with cooking water, oil
or sauce.

5) The remote controller cables carry low voltage, 12VDC digital.

The controllers can be wired in series or in parallel depending on the
distance from the Rinnai Water Heater to the controllers.

Every installation is different

REMOTE CONTROLLER OPERATION

GENERAL CONTROLLER INFORMATION

DIAGNOSTIC USE OF CONTROLLER

1. To Display Maintenance Codes: Press ‘On/Off’ button. To sequence
through stored maintenance codes, press ‘On/Off’ followed by the
thermostat button.

2. To Display Water Flow through water heater: Press thermostat
button, hold for 2 seconds and simultaneously press ‘On/Off’ button.

3. To display Outlet Water Temperature: Press ‘thermostat button’,
hold for 2 seconds and simultaneously press ‘On/Off’ button.

TO CHANGE TEMPERATURES FROM °F to °C

1. Press and hold ‘On/Off’ button for 5 seconds while water heater is OFF.

2. To change back from °C to °F, please repeat step 1.

MUTE

To eliminate the beeping sound, press and hold and button
simultaneously until a ‘beep’ is heard (approximately 5 seconds).

Temperature controllers allows precise temperature control by the user.
When used correctly, the hot water unit will deliver the selected
temperature, even when the water flow is varied, or more than one tap is in
use. Each Temperature Controller can be individually programmed,
however the water heater unit can only deliver one set temperature at any
time. The available temperatures (°F) are as follows:

Temperature Table by Models

□▲

□▲

□▼

□▲ □▼

GAS PRESSURE SETTING AND DIAGNOSTICS

INFORMATION

NOTE: For additional installation and commissioning
information refer to Operation / Installation Manual

APPLIANCE OPERATING PRESSURES

COMMISSIONING

With all gas appliances in operation at maximum gas rate, the flowing
inlet pressure at the incoming test point on the Rinnai Water Heater
should read 6"W.C. - 10.5"W.C. on Natural Gas and 10"W.C. - 13.5"W.C.
on Propane Gas. If the pressure is lower, the gas supply is inadequate
and the appliance unit will not operate to specification. Check gas meter,
regulator and pipework for correct operation/sizing and rectify as
required.

GAS PRESSURE SETTING

(Ensure gas pressure check under Commissioning above has been
completed first !)
The regulator is electronically controlled and factory pre-set. Under

normal circumstances it does not require adjustment during
installation. Make adjustments only if the unit is not operating
correctly and all other possible causes for incorrect operation have
been eliminated.

1. Turn ‘OFF’ the gas supply.

2. Turn ‘OFF’ 120V power supply.

3. Remove the front cover from the appliance.

4. Check gas type switches (Fig.1) are in the correct position
(dip switch 1 of SW2 ‘ON’ = NG, ‘OFF’ = LPG)

Note: ‘ON’ towards front, ‘OFF’ towards rear.

5. Attach pressure gauge to burner test point, located on the gas control.
(Fig.2).

6. Turn ‘ON’ the gas supply.

7. Turn ‘ON’ 120V power supply.

8. If remote controllers are fitted, turn the unit ‘ON’ at the kitchen controller,
select the maximum delivery temperature and open all available hot
water taps full including the shower.
(CAUTION: Ensure building occupants do not have access to hot water
outlets during this procedure).

THIS APPLIANCE MUST BE INSTALLED, SERVICED

AND REMOVED BY AN AUTHORISED PERSON

DURING PRESSURE TESTING OF THE CONSUMER PIPING

ENSURE GAS COCK SITUATED BEFORE UNIT IS SHUT-OFF.

FAILURE TO DO SO MAY RESULT IN SERIOUS

DAMAGE TO THE APPLIANCE AND POSSIBLE INJURY.

WARNING

Nat.G Prop.G Nat.G Prop.G Nat.G Prop.G

REU-V2532FFUD
REU-V2532FFUCD
REU-V2520FFUD
REU-V2520FFUCD

150PSI

6"W.C.

10.5"W.C.

10"W.C.

13.5"W.C.

0.77"W.C. 0.93"W.C.

3.7"W.C. 4.2"W.C.

Table 1.

Water

Inlet Min.

Gas Inlet

Min./ Max.

Forced Low Forced High

No code or

blank

display

Nothing happens when water

flows through water heater.

Clean inlet filter screen and ensure you have at least the
minimum flow rate required to fire unit. Check for pipe dope
inside water flow control turbine.
On new installations, ensure hot and cold water lines are not
crossed.
Check for bleed over. Isolate unit from building by turning off
hot water line to building. Then open your pressure relief
valve, if unit fires, thereís a bleed over in your plumbing.
If a circulating system is in use, it must be isolated also.

Remote control does not light up but you have 12 VDC at the
terminals for controls:
Disconnect water flow control motor, then turn on hot water,
if unit fires replace water flow control assembly.

Code

Displayed

00

Fault

When checking maintenance code history,

“00” is substituted for “LC”

Build up of lime scale in heat exchanger - needs to be
flushed.

03

Power interruption during Water Smart/Bath Fill

(Hot water will not flow when power returns)

Turn off all hot water taps. Press ON/OFF twice.

33

Heat exchanger outlet water temperature

faulty

Check H.E. outlet sensor or wiring. Measure resistance of
sensor. Clean sensor of scale build-up

34
52

Modulating Solenoid Valve signal abnormal

Check gas control wiring harness and measure resistance of
valve coil in ohms.

61

Combustion Fan Failure

Combustion fan or wiring harness faulty. Make sure
motor/fan turns freely. Measure resistance of motor winding.

71

SV0, SV1, SV2 or SV3

Solenoid Valve Circuit Faulty

Check all gas solenoid wiring harness and connections.
Measure resistance of each solenoid valve coil.

LC Scale build-up in Heat Exchanger

Build up of lime scale in heat exchanger ñ needs to be
flushed.

02

No burner operation during freeze

protection mode

Verify that gas supply is turned on to the water heater and
valve at meter or tank is open. Verify proper gas type and
supply pressure. Bleed air from gas line. Verify all ignition
component/wires are connected.

10

Air intake supply or exhaust blockage

Check for a restriction in exhaust or intake vent, verify proper
dip switch settings. Ensure only Rinnai approved venting
components are used.

14

Thermal Fuse

Ensure high and low fire manifold gas pressures are properly
set. Verify dip switch settings are correct. Measure
resistance in ohms of safety circuit.

11 No Ignition

Verify that gas supply is turned on to the water heater and at
meter or tank. Verify proper gas type and supply pressure.
Bleed air from gas line. Verify all ignition component/wires
are connected.

32

Outlet water temperature sensor reading

out of expected range

Check outlet temperature sensor or wiring for damage.
Measure resistance of sensor. Clean sensor of scale build ­up.

65

Water Flow Servo Faulty

(Does not stop flow properly)

Water Flow Servo or wiring faulty. Check Water Flow Servo
wiring harness conection.
Measure resistance of Water Flow Servo wiring.

16 Over Temperature Warning

Verify dip switch settings, check manifold pressure and verify
gas type for water heater. Check for clogged heat
exchanger. Check for low water flow in a circulating system
causing short-cycling.

72 Flame Sensing Device Faulty

Check flame rod and wiring harness connections. Measure
micro amp output of sensor circuit with flame present. Clean
flame sensor of any build-up. Check for debris in burner
chamber that may block flame from sensor.

12 Flame Failure, poor ground connection

Make sure gas is turned on at the water heater; check for
obstructions in exhaust vent. Ensure only Rinnai approved
venting components are used. Verify proper grounding.
Check for debris or moisture in burner area.

Items to Inspect

INSTALLER'S INSTALLATION INSTRUCTIONS

-Warnings-

This manual must be followed exactly.

The Rinnai Water Heater is not suitable for use in pool or spa applications.
Installer must install a Pressure relief valve. Pipe pressure relief discharge to

a drain or outside environment.

Maintain proper space around the unit for proper servicing and operation.
Minimum clearances from combustible materials are listed below.

RECOMMENDED VENT/AIR INTAKE TERMINAL POSITION

Terminals should be so positioned as to avoid products of combustion
entering openings into buildings or other flues or vents.

REF

U.S. Installations

Candadian
Installations

DESCRIPTION

K 3 feet 6 feetClearance to a forced air inlet into a building

N 2 feet 2 feetVent FIue from wall (FIat or Pitched Roof)

P 1 foot 1 footClearance between two vertical flue on the same pIane
Q 1 foot 1 footHorizontal between two terminals on the same wall

S 4 feet 4 feetClearance from terminal facing a terminal

R 5 feet 5 feet

Clearance between two Vertical flue on pitched roof above
each other

O 5 feet 5 feet

Vertical between two terminals on the same wall above each
other

M

3 feet 3 feetClearance under deck, veranda, porch, or balcony

(open on 3 sides)

L * 7 feet

Clearance above paved sidewalk or paved driveway located on
public property

J **1 foot 1 foot

Clearance to nonmechanical air supply inlet to building or the
combustion air inlet to any other appliance

INSTALLER'S INSTALLATION INSTRUCTIONS

Locating the vent terminal

REF

U.S. Installations

Canadian

Installations

DESCRIPTION

A 1 foot 1 footClearance above grade, veranda, porch, deck, or balcony
B **1 foot 1 foot

**

Clearance to window or door that may be opened
C Clearance to permanently closed window
D 3 feet 3 feetVertical clearance to ventilated soffit, eaves or overhang
E 3 feet 3 feetClearance to unventilated soffit, eaves or overhang
F 1 foot 1 footClearance to outside corner
G 2 feet 2 feetCIearance to inside corner

I * 3 feetClearance to service regulator vent outlet

H

*

3 feet within a height

15 feet. above the

meter/reguIator

assembly

Clearance to each side of center line extended above

meter/regulator assembly

INSTALLER'S INSTALLATION INSTRUCTIONS

Remote Controllers - Installation

1) Determine a suitable location for the
controller.

2) Make three holes on the wall as
shown.

3) Run the cable between the controller
and the Rinnai Water Heater or the
controller and the other controller.

4) Remove the face plate from the remote controller.

5) Connect the cable to the remote controller.

6) Mount the controller to the wall using the holes drilled in step 2.

7) Disconnect the power from the Rinnai Water Heater.

8) Remove the cover of the Rinnai Water Heater.

9) Remove the plastic cover from the PCB and electrical connections.
DO NOT ATTEMPT TO CONNECT THE REMOTE CONTROLLERS WITH
THE POWER ON, THERE'S 120 VOLT POTENTIAL, NEXT TO THE
REMOTE CONTROLLER CONNECTIONS INSIDE THE UNIT. All service
and wiring should be performed by a certified installer.

1

11
32

"

3

5
16

"

model

REU-V2532FFUD
REU-V2520FFUD(°F)

REU-V2520FFUCD(°F)

REU-V2532FFUCD(°F)

9898100

100

102

102

104

104

106

106

108

108

110

110

115

115

120

120

120

125

125

125

130

130

130

135

135

135

140

140

140

150

150

160

160

185

Approx.
temperature(°C)

37 38 39 40 41 42 43 46 49 52 54 57 60 66 71 85

185

temperature

water smart/
bath fill temperature (°F)

Approx.
temperature (°C)

49

120481184711646114441124311042108411064010439102381003798

temperature

1 ＋

＋
＋
＋
＋
＋

＋
＋
＋
＋
＋
＋

＋
＋
＋
＋
＋
＋

MC-91-1US
MC-91-1US
MC-91-1US
MC-91-1US
MC-91-1US
MC-91-1US MC-91-1US BC-100V MC-100V

MC-100V

MC-91-1US **MC-91-1US

MC-91-1US

BC-100V

MC-91-1US

MC-91-1US

MC-91-1US2
3
4
5
6

Remote and Deluxe Controllers

(M) Water Flow Control Device Servo or Geared Motor:

NOTE: The grey wire listed above turns to black at B connector on the PCB, the orange wire turns to red.
(QS) Water Flow Sensor:

By-pass Flow Control: (REU-V2532FFU/FFUC ONLY)

(IG) Ignition System:

(FM) Combustion Fan Motor:

Set your meter to the hertz scale. Reading across the red and yellow wires at terminals 2 and 3
you should read between 60 and 350 hertz.

Thermal Fuse:

Overheat Switch:

Flame Rod:

Place one lead of your meter to the flame rod and the other to earth or ground. With the unit
running you should read between 5 ~ 150 VAC. Set your meter to the µ amp scale, series your
meter in line with the flame rod. You should read 1µ or greater for proper flame circuit. In the
event of low flame circuit remove the flame rod and check for carbon and/or damage.

Heat Exchanger, Air Temperature, and Outgoing Water Temperature Thermistors:

Check all thermistors by inserting meter leads into each end of the thermistor plug. Set your
meter to the 20K scale and read resistance. You should be able to apply heat to the thermistor
bulb and see the resistance decrease. Then apply some ice to the thermistor and the resistance
should increase. See below for examples of temperatures and resistance reading at those
temperatures.

Example: 59°F = 11.4 ~ 14K
86°F = 6.4 ~ 7.8K
113°F = 3.6 ~ 4.5K
140°F = 2.2 ~ 2.7K
221°F = 0.6 ~ 0.8K

Outgoing Water Thermistor:

Heat Exchanger Temperature Thermistor:

Surge Protector:

With the power off you can check the continuity through the surge protector. Place one meter
lead on the top pin #1 of the surge protector and pin #2 on the bottom of the surge protector.
Then check across top pin #3 and bottom pin #1, if you read continuity across these two points
the surge protector is good. If you do not get continuity, replace the surge protector.

Remote Controls:

Frost Protection:

This unit has four frost protection heaters mounted at different points inside the unit, to protect
the water heater from freeze ups. There are two heaters located on the outlet hot water line
next to the thermistor.
Using a voltage meter set on the 200 ohm scale, you should have a resistance reading of 26 ~
30 ohms through each of these heaters. The heater located on the heat exchanger piping
should have a resistance reading of 81 ~ 86 ohms and the one located in the water flow sensor
valve has a resistance reading of 16 ~ 19 ohms. Voltage throughout this circuit should be 120
VAC.

Amp Fuses:

This unit has two inline (3) amp glass fuses. Remove the fuse and check continuity through it. If
you have Continuity through the fuse, it is good. If you can not read continuity, the fuse is blown
and must be replaced.

SERVICEMAN'S TROUBLESHOOTING INFORMATION

for the RINNAI WATER HEATERS

IMPORTANT SAFETY NOTES:

There are a number of (live) tests that are required when fault finding this
product. Extreme care should be used at all times to avoid contact with
energized components inside the water heater. Only trained and qualified
service agencies should attempt to repair this product. Remember,
before checking for resistance readings, you should disconnect the power
source to the unit and isolate the item to be checked from the circuit (unplug it).

(TR) Transformer:

(SV1, SV2, SV3 and POV) Gas valve and Modulating solenoids: (Set meter above 2K)

Wire color
Black ~ White
Blue ~ Brown

Voltage
90 ~ 100 VAC
108 ~ 132 VAC

Resistance
51 ~ 63 ohms
51 ~ 63 ohms

Connector #
F9
F7

Pin #'s
1 ~ 2
1 ~ 3

Red ~ Black
White ~ Black
Yellow ~ Black

6 ~ 45 VDC
5 ~ 10 VDC
11 ~ 13 VDC

N/A

9.2K ~ 9.4K

3.5K ~ 3.9K

A1
A1
A1

1 ~ 2
2 ~ 4
2 ~ 3

(Main) Pink ~ Black
(SV1) Black ~ Yellow
(SV2) Black ~ Blue

80 ~ 100 VDC
80 ~ 100 VDC
80 ~ 100 VDC

1.7K ~ 2K ohms

1.7K ~ 2K ohms

1.7K ~ 2K ohms

E1
E2
E3

1 ~ 2
2 ~ 3

2 ~ 4
(SV3) Black ~ Brown 80 ~ 100 VDC 1.7K ~ 2K ohms E4 2 ~ 5
(POV) Pink ~ Pink 2 ~ 15 VDC 67 ~ 81 ohms C2 3 ~ 4

Grey ~ Grey 90 ~ 100 VAC N/A A1 1 ~ 2

Red ~ Red 12 VDC Below 1 ohm B ~ C B6 ~ C1

Red ~ Red 12 VDC Below 1 ohm B ~ C B6 ~ C1

White ~ White N/A See example above B B3 ~ B4

White ~ White N/A See example above B B3 ~ B12

Terminals D1, D2 10 ~ 13 VDC digital 1.5K ~ 1.9K ohms H 1 ~ 3

Black ~ White
Blue ~ Brown

108 ~ 132 VAC
108 ~ 132 VAC

N/A
N/A

Surge Protector D1
Surge Protector D2

1 ~ 3
1 ~ 2

Brown ~ White
Orange ~ White
Yellow ~ White
Red ~ White/ Ground

2 ~ 6 VDC

Unit in operating
mode

15 ~ 35K

G4 ~ G5
G2 ~ G5

4 ~ 5

2 ~ 5
G1 ~ G5
G3 ~ G5

1 ~ 5

3 ~ 5

Red ~ Blue
Grey ~ Brown
Grey ~ Yellow

11 ~ 13 VDC
4 ~ 6 VDC
N / A

22 ~ 26 ohms
N / A
N / A

B2
B2
B2

9 ~ 10

5 ~ 7

Black ~ Red
Yellow ~ Black

11 ~ 13 VDC
4 ~ 7 VDC

5.5K ~ 6.2K
1 meg ~ 1.4 megB4B4

5 ~ 6

1 ~ 5

5 ~ 8

Grey ~ Orange 11 ~ 14 VDC N / A B2 5 ~ 6

REU-V2532FFUD-US
REU-V2532FFUCD-US
REU-V2520FFUD-US
REU-V2520FFUCD-US


U245-3245（00）

In Use Indicator

Indicates that a hot water tap
is open and that control of the
temperature has been taken at
another controller.

Digital Monitor

Indicates the selected
water temperature.
Error messages flash
in the event of a failure.

Thermostat

Increases or decreases
the desired water
temperature.

Priority Indicator

Indicates whether this
controller has priority
control over the water
temperature

Priority

Pressing takes control
of the water temperature
by this controller.

ON/OFF

Used to switch the
water heater on and off

Attention Installer! - Have You Checked Everything?

For full details - Always Refer to Rinnai Installation Instructions

□ HOT (outlet) and COLD (inlet) water lines are not crossed to the unit
and are leak free.


□ You have installed isolating valves, unions, and drain down vales on the

cold water inlet line and hot water outlet lines. (These components are
used for servicing and/or removing the appliance quickly).


□ COLD water inlet filter was cleaned after installation. (The filter MUST

be cleaned after installing the unit)


□ A pressure relief valve is installed and is rated for 200,000 Btu's at 150

PSI per local code.


□ 120 VOLTS A.C. is connected to the unit, it is properly GROUNDED

and circuit is turned on.


□ Gas supply system is properly sized. All gas meters, regulators, gas

line types, tanks, etc. have a BTU value. Please confirm that all
components meet the gas requirements at this location. Verify the
system is functioning correctly by connecting your manometer to the
gas pressure test port on the Rinnai unit. Operate all gas appliances in
the facility. The inlet gas pressure must not drop below that listed in the
ownerís manual specification sheet or appliance rating plate.

□ Proper gas type and pressure is supplied to the unit. (See owner's
manual for correct inlet gas pressures in the specification section.
Normal inlet gas pressures are 7" to 10" of water column for natural
gas, and 11" to 13" of water column for propane gas).

□ Gas supply pipe is purged of foreign material before connection.

□ Proper model controllers are used, connected and functioning.

□ Instructed the customer how to operate the Controllers.

□ Verify proper clearances around the unit and all vents and air intakes.

(See owner's manual for all clearance requirements.)


□ Explained to the customer to never store anything around the vent

terminals or block the air and/or exhaust ports to the unit.



For Internal models only


□ Ensure you used the proper venting materials for the unit you have

installed.

Rinnai Water Heaters

Dip Switch Default Settings

Fig. 3

Fig. 5 Fig. 6

ON

ON

SW1

ON

SW1

Fig. 2Fig. 1

Fig. 4

Regulator adjustment
screw access plug

Burner test point

GAS

COLD water inlet filter

inlet GAS test port

WATER INLET

(COLD)

WATER OUTLET

(HOT)

CLAMP

REMOTE
CONTROL CABLE

REMOTE CONTROL
CONNECTION TERMINALS

Water Smart / Bath Fill temperature cannot exceed 120°F for the following
commercial models with no by-pass : REU-V2520FFUCD

◆ＲＥＵ−Ｖ２５３２ＦＦＵＤ

◆ＲＥＵ−Ｖ２５３２ＦＦＵＣＤ

NAT.GLPG LPG NAT.G NAT.GLPG LPG NAT.G

◆ＲＥＵ−Ｖ２５２０ＦＦＵＤ

◆ＲＥＵ−Ｖ２５２０ＦＦＵＣＤ

Residential Units Commercial Units

Dip Switch Settings Dip Switch Settings

Residential Units

Dip Switch Settings

Commercial Units

Dip Switch Settings

1

O
F
F

2
3
4
5
6
7
8

ON

→

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

ON

→

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

1

O
F
F

2
3
4
5
6
7
8

→

ON

O
F
F

2
3
4

1

→

ON

Sensor or wiring faulty. Verify fan blade is mounted securely
to shaft. Check for airflow restrictions in venting system.

(Indoor Units Only) Combustion air sensor

reading out of expected range

OFF/ON

Vent/air intake
piping length

See Owner's manual for more in informd detail.

12345678

070 00012 31445 7

PARTS LIST

Part Number
U245-3150-1
U245-3150-2
U242-111-11
U242-111-9
CF79-41020-A
U245-3160
U245-107
U245-3110-3
U245-3110-4
U245-3118-2
U245-3118-1
MC-91-1US-S-FL
U245-3134
U245-3121
U245-3122
AH59-772
AU169-126
AH59-772
C36E-41-S
AU39-965
CU195-1866
H73-110
CH51-209
H73-112
BH51-218
B3A7-1

CH51-221
H73-115
U245-200-A
U245-200-B
AU155-207-2
H73-214
C10D-5
U245-260
U245-261
H73-120
AH41-216
AH66-398
AH66-393
U245-262
U242-312
AU161-665-C
U245-550
U245-555
BH29-606
AU183-562
U245-560

Quantity
V2532FFUD/FFUCD
1
1
1
1
1
1
1
1
1
1
2
1
1
2
4
1
1
1
1
2
1
1
1
1
1
16

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

V2520FFUD/FFUCD
1
1
1
1
1
1
1
1
1
1
2
1
1
2
4
1
1
1
1
2
1
1
1
1
1
16

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

V2520FFUD/FFUCD
1
1
1
1
1
1
1
1
1
2
1

­1
1

­1
1

-

­1
1
1
1
1
1
1
1
1

­1
1
1
1
1
1
1
1
1
2
1
5
1
1
1
1
2
1
1

V2520FFUD/FFUCD
1
1
1
1
1
1
1
1
1
1
1
8
4
4
3
1
2
2
1
1
1
2
1
1
1
2
1
1
1
1
1
1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Description
Casing Assembly (Residential model)
Casing Assembly (Commercial model)
Wall Fitting Bracket-8 (Residential model)
Wall Fitting Bracket-9 (Commercial model)
Rubber Bushing
Connection Reinforcement Panel
Heat Protection Plate
Front Panel (Residential model)
Front Panel (commercial model)
Front Panel Packing
Front Panel Packing Side
Remote Controller
Remote Controller Support Plate
Side Panel
Side Panel Cap
Quick Controller Connection
Cable Seal Packing
Connection Support Clip
Gas Control Assembly
Screw
Gas Connection (3/4""NPT)
Burner Unit Assembly
Burner Case Front
Burner Case Bottom Panel
Packing
Lean and Rich
Bunsen Burner Assembly
Burner Case Back Panel
Damper
Manifold Assembly -A (LPG)
Manifold Assembly -B (Nat.G)
Paking of Combustion Chamber
Lower Packing of Combustion Chamber
Screw
Combustion Chamber Front Plate Assembly
Combustion Chamber Front Plate
Electrode
Flame Rod
Electrode Packing
Electrode Holder
Upper Packing of Combustion Chamber
Tube Joint
Pressure Tube
Blower Motor All Assembly
Fan casing Assembly
Fan Connecting Bracket
Fan Connecting Packing
Blower Motor

Number
001
001
002
002
003
004
005
006
006
007
008
009
010
011
012
013
014
015
100
101
102
103
104
105
106
107

108
109
110
110
111
112
113
114
115
116
117
118
119
120
121
122
125
126
127
128
129

Quantity
V2532FFUD/FFUCD
1
1
1
1
1
1
1
1
1
2
1
1

­1
1

­1
1
2

­1
1
1
1
1
1
1
1
1

­1
1
1
1
1
1
1
1
1
1
5
1
1
1
1
2
1
1

Part Number
U245-558
U245-566
U245-255
U245-400
U245-408
U245-409
U245-567
U245-410
U245-434
U245-435
U245-419
U245-690
U245-2240
H73-501-2
M8E-15
M8E-14
M8D1-15
M6J-1-3
AH69-310
AU195-321
H73-512
H98-511
H98-510
U245-865-3
AU162-1876
AU103-413
AU142-444
H98-510-S
U245-500
U245-2260
BBF9-630
U245-774
BU168-707
ET-281
U245-257
El-189
BH38-710-240
AU206-218
BH45-650
CP-90172
U217-676
U242-511
U245-620
U245-621
U245-622
CF29-742
AU111-653
AU100-721

Number
130
131
132
135
136
137
138
139
140
141
142
145
145
400
401
401
402
403
404
404
405
406
407
408
409
410
411
412
700
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718

Description
Bell Mouth
Bellows Connecting Bracket/Intake Duct
Combustion Chamber Bracket
Air Inlet Box Assembly
Bellows Connecting Bracket/Fan
Bellows
Bellows Clamping Ring
Air Inlet Box Assembly
Exhaust Bracket
Exhaust Bracket Holder
Air Inlet Box Cover
Heat Exchanger Complete Assembly
Heat Exchanger Complete Assembly
Water Inlet (3/4""NPT)
Water Flow Servo & Sensor Assembly
Water Flow Servo & Sensor Assembly
Rectifier
By-pass Servo Assembly
Stop Bracket
Stop Bracket
Plug Band
Water Filter Assembly
Filter Plug
Hot Water Outlet (3/4""NPT)
Stop Bracket
Plug Band Small
Drain Valve
Water Filter All Assembly
PCB
PCB
Surge Protector
PCB Cover-Side
PCB Cover-Front
Transformer Assembly
PCB Bracket
Ignitor
High Tension Cord
Electrode Sleeve
Thermistor
Thermistor Clip Large
Thermal Fuse Clip
Frost Sensing Switch
120V Anti-Frost Heater Assembly
Heater Connecting Harness
120V Valve Heater Assembly
Anti-Frost Heater Clip
Anti-Frost Heater Clip A
Anti-Frost Heater Clip

Part Number
BH50-730-2
BU195-1630
U245-601
U245-602
U245-603-6
U245-603-9
U245-3190
BU129-821-2
U245-3173

U242-780
ZIHD0510UK
CP-30580
CF83-41430
CP-21478-412
U217-449
ZAA0408UK
M10B-2-4
M10B-2-3
M10B-13-4
M10B-2-18
M10B-2-16
M10B-2-14
M10B-2-7
M10B-1-24
C36E1-6
U245-2602
PWB-261
BU195-1865
MC-91-1US
MC-100V-1US
BC-100V-1US
50710327
50223098B

224064
184118
224069
146141
50171948
50171960
50171953
224051
224052
224053
224063
224050
169044

Quantity
V2532FFUD/FFUCD
1
1
1
1
1
1
1
1
1
1
1
8
4
4
3
1
3
2
1
1
2
2
2
1
1
2
1
1
1
1
1
1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Description
Inlet Air Thermistor
Fuse Harness
100V Harness
Solenoid Valve Harness
Sensor Harness
Sensor Harness
Thermal Fuse Harness
Mold-Type Over Heat Switch
Remote Controller Harness
Power Surprise Cable
Remote Controller Cable
Screw
Screw
Washer
Screw
Screw
Screw
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
Packing
Owner's Manual
Package Spec Sheet
Manual 3/4"" gas control valve
Remote Controller (include)
Deluxe Controller (optional)
Deluxe Bathroom Controller (optional)
Horizontal Discharge Adapter
Wall Discharge Terminal
(for wall thicknesses from 4"" to 20"")
Vertical Discharge Adapter
Roof Discharge Terminal
Condensate Collector
Roof Flashing - Flat Roof
Roof Flashing - 1/12 to 6/12 Pitch
Roof Flashing - 6/12 to 12/12 Pitch
Roof Flashing - 12/12 to 16/12 Pitch
10"" Pipe Extension

19.5"" Pipe Extension
39"" Pipe Extension
90 Degree Vent Pipe Elbow
45 Degree Vent Pipe Elbow
Vent Pipe Clamp

Number
719
721
722
723
724
724
725
726
727
728
729
800
801
802
803
804
805
810
811
812
813
814
815
816
817
818
888

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

801

802

012

011

007

005

009

010

001 

002

800

003

006

800

004

008

006

MC-91-1US(include)

MC-100V-1US(optional)

BC-100V-1US(optional)

131

116

118

803 110

115

708

707

113 812

120

117

105 108 121

122

705

706

125

811

719

103

139

141

716
710135
709

810

138

132

726

718

717

136

712

137

142

140

141

143

104

106

112

111

109

107

119

130

126

128

127

129

711



100

401

101818

818

701

727

813

403

815

815

704

817

402

813

406

407

412

013

014

015

102

101

400

405814

700

805

804

814

409

709

810

715 408

410 816 411

702

703

404

805

725

724

709

719

709

726

713

712

715

715

727

723

722
729

727

728

721

714

724

EXPLODED VIEW - CABINET EXPLODED VIEW - INTERNALS

EXPLODED VIEW - ELECTRICALEXPLODED VIEW - INTERNALS