State Water Heaters 21 Instruction manual

*SAR8437 T*

SAR8437

WARNING: If the information in this manual is not followed exactly, a fire or

explosion may result causing property damage, personal injury or death.

-Do not store or use gasoline or other flammable vapors and liquids in the

vicinity of this or any other appliance.

-WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the

gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

-Installation and service must be performed by a qualified installer, service

agency or the gas supplier.

CERTIFIED

21,000 – 236,000 BTU Tankless Water Heater

Owner’s Guide and Installation Manual

Printed in the U.S.A. 1005 PART NO. 184959-107

Thank you for purchasing this Gas Water Heater. Before using, please:

Read this manual completely for correct installation and operation instructions.

Completely fill out the warranty registration card (included separately) and

mail the detachable portion.

Keep this manual (and the remainder of the warranty registration card) where it

can be found whenever necessary.

Low NOx

Approved by

SCAQMD

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Contents

Contents ........................................................................................................ 2

Owner's Guide

Important Safety Information....................................................................... 3

General Parts

Main Unit.................................................................................................... 8

Remote Controller .................................................................................... 9

Initial Operation ........................................................................................... 11

Setting and Using the Water Heater........................................................... 12

Flow Meter Alarm......................................................................................... 14

Muting the Remote Controller .................................................................... 16

Preventing Damage from Freezing ............................................................ 17

Regular Maintenance................................................................................... 19

Troubleshooting .......................................................................................... 21

Follow-up Service ........................................................................................ 25

Specifications .............................................................................................. 26

External Outfitting ....................................................................................... 27

Combustion Unit and Gas Route ............................................................... 29

Hot-Water Feed Route ................................................................................. 31

Electronic Control Unit................................................................................ 33

Electronic Control Unit, Remote Controller and Attached Set................ 34

Installation Manual ...................................................................................... 35

1. Included Accessories............................................................................ 36

2. Optional Accessories............................................................................ 36

3. Quick Connect Multi System Installation ............................................ 37

4. Before Installation ................................................................................. 38

5. Choosing Installation Site .................................................................... 38

6. Installation Clearances ......................................................................... 40

7. Installation.............................................................................................. 43

8. Vent Pipe Installation ............................................................................ 44

9. Gas Piping.............................................................................................. 47

10. Water Piping........................................................................................... 49

11. Plumbing Applications.......................................................................... 50

12. Electrical Wiring .................................................................................... 51

13. Maintenance........................................................................................... 55

14. Trial Operation ....................................................................................... 55

15. Dimensions and Wiring Diagram ......................................................... 56

16. Multi-System .......................................................................................... 58

Remote Controller Installation Guide ........................................................ 62

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Prohibited Don’t

touch.

Don’t

disassemble

the equipment.

Don’t touch

with a wet

hand.

No flame.

High

Temperature.

To prevent damage to property and injury to the user, the icons shown below will be used to warn of

varying levels of danger.

Every indication is critical to the safe operation of the water heater and must be understood and

observed.

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.

Other icons

Danger

Warning

Caution

Denotes content that may result in instantaneous fire, serious injury

and even death when ignored.

Denotes content that may result in fire, serious injury and even

death when ignored.

Denotes content that may result in bodily injury and physical

damage when ignored.

The content following this icon is necessary to understand for safe

and easy use of this water heater.

Remarks

Be sure

to do. Ground.

Electric

Shock.

Danger

Do not use the water heater if

the exhaust pipe is displaced, has

holes, or is corroded.

If you detect a gas leak:

1. Do not try to light any appliance

2. Do not touch any electrical

switch; do not use any phone in

your building.

3. Immediately call your gas

supplier from a neighbor’s phone.

Follow the gas supplier’s

instructions.

4. If you cannot reach your gas

supplier, call the fire department.

Icons warning of risk level

Important Safety Information-1

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If you detect abnormal combustion

or abnormal odors, or during an

earthquake, tornado or fire:

1. Turn off the hot water supply

2. Turn off the power to the water

heater

3. Turn off gas and water at the

main

4. Consult the nearest sales agent

Check the temperature of the

running hot water before

entering the shower.

Check the temperature before

stepping into the bath tub.

Do not turn off the water heater or

change the water temperature while

someone is using.

Be sure the gas/power supplied

matches the gas on the rating

plate.

Warning

Important Safety Information-2

Contact sales agent before using

with a solar pre-heater.

Contact a qualified service

technician for any necessary

repairs, service or maintenance.

Consult the nearest sales agent if

the water heater location needs to

be changed.

Do not allow small children to play

unsupervised in the bathroom.

Do not allow small children to

bathe unsupervised.

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Leave the proper clearance between

the water heater and nearby objects

(trees, timber, boxes with flammable

materials etc.).

Do not place or use a spray can

near the heater or the exhaust vent

terminal.

Left side:

Min. 2" Right side:

Min. 2"

Min. 3" from

vent pipe

Do not place combustibles such as

laundry, newspapers, oils etc. near

the heater or the exhaust vent

terminal.

Exhaust vent

terminal (indoor

installation)

*Indicates suggested clearances for

maintenance.

Front:

Sug. 24"*

Warning

[When installing indoors]

Check the air supply

vent for dust or

obstructions.

Do not use combustible chemicals

such as oil, gasoline, benzene etc.

in the vicinity of the heater or the

exhaust vent terminal.

Unit

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Be sure to electrically ground the

unit.

Do not touch the power cord with

wet hands.

Keep power cord free of dust.

Do not use a broken or modified

power cord. Do not bind, bend or

stretch power cords.

Do not scratch, modify, or subject

them to impact or force.

Do not use the water heater for

other than hot water supply,

shower and bath.

Do not touch the exhaust vent pipe

during or immediately after

operation of the water heater.

Do not use hair spray or spray

detergent in the vicinity of the

heater.

If this unit will be installed in a

salon or other location where hair

spray or aerosols will be used,

locate the unit in a seperate area

that is supplied with fresh air from

outdoors.

Do not install in locations where

excessive dust or debris will be

in the air.

Caution

Important Safety Information-3

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Do not drink water that has been inside the

unit for an extended period of time. Do not

drink the first use of hot water from the

unit in the morning.

Clean the filter on the water inlet as

frequently as required by the quality of

your local water.

Keep the area around the unit clean.

If boxes, weeds, cobwebs, cockroaches etc. are in

the vicinity of the unit, damage or fire can result.

Do not install the equipment where the

exhaust will blow on walls or windows.

Treat hard, acidic or otherwise impure

supply water with approved methods to

ensure full warranty coverage.

Problems resulting from scale formation

are not covered by the warranty.

Check ignition during use and extinction

after use.

This unit is only approved for installation

up to 4500 ft. above sea level.

For installations at higher elevations, contact sales

agent for Instructions.

Do not use parts other than those specified

for this equipment.

Do not disassemble the remote controller.

Do not use benzene, oil or fat detergents

to clean the remote controller.

This may cause deformation.

Do not get the remote controller wet.

Although it is water resistant, too much water can

cause damage.

Do not splash water on the remote

controller. Do not expose the remote

controller to steam.

Do not locate the remote controller near stoves or

ovens, this may cause damage or failure.

Preventing damage from freezing ( p.17)

Damage can occur from frozen water within the

device and pipes even in warm environments.

Be sure to read below for appropriate measures.

Repairs for damage caused by freezing are not

covered by the warranty.

Take necessary measures to prevent

freezing of water and leakage of gas when

leaving the unit unused for long periods of

time. ( p.18)

If it is snowing, check the air inlet, exhaust

gas vent and exhaust vent terminal for

blockage.

Remark

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General Parts-1

Indoor/Outdoor Wall Mounted, Power Vented Model

* The above illustration shows an example of installation.

The exact installation configuration may be slightly different.

Main Unit

Flue Collar

Front Cover

Air Inlet

Water Supply Valve

Gas Supply Valve

Pressure Relief Valve

Water Drain Valve (with Water Filter)

(Inside Water Inlet) ( p.20)

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Remote Controller (9004223)

Display

( next page) For setting the hot

water temperature,

the flow meter alarm,

and other settings.

Power On/Off Button

For turning the

heater on and off.

Flow Meter Alarm Set Button

For setting the flow

meter alarm.

(p.14 and 15)

Setting Buttons

* Before use, remove the protective sheet from the remote controller surface.

* The unit has been shipped from the factory with the remote control set at 110°F.

General Parts-2

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Temperature Setting

(Ex.: 110°F)

Flow Meter Setting

The display will flash

after hitting the flow

meter alarm set button.

(p.15)

Error Code

When this indicator

is lit, the hot water

temperature can be

set. (p.13)

Priority Indicator

The illustration below shows the remote controller display. What is actually displayed

depends on how the water heater is set.

Burner On Indicator

A number will flash if

a failure occurs.

(p.24)

Display

General Parts-3

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