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PART NO. 72090 REV. D (07-11)

WARNING:

If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury or death.

WARNING:

Improper installation, adjustment, alter-
ation, service, or maintenance can cause
injury or property damage. Refer to this
manual. For assistance or additional infor-
mation, consult a qualified installer, serv-
ice agency, or the gas utility.

FOR YOUR SAFETY

• Do not store or use gasoline or other

flammable vapours and liquids in the
vicinity of this or any other appliance.

• Installation and service must be per-

formed by a qualified installer, service
agency or the gas utility.

• 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.

WHAT TO DO IF YOU SMELL GAS

GSW Water Heating is a division of
A. O. Smith Enterprises Ltd.

FLAMMABLE VAPOR RESISTANT WATER HEATER

INSTALLATION AND OPERATING INSTRUCTIONS

Read these instructions thoroughly before starting

Summary of Contents for 72090

Page 1: ...her flammable vapours and liquids in the vicinity of this or any other appliance Installation and service must be per formed by a qualified installer service agency or the gas utility Do not try to li...

Page 2: ...2 This page intentionally left blank May be used for notes or to record other installation information...

Page 3: ...ermal Expansion Temperature and Pressure T P Relief Valve 12 The Temperature And Pressure Relief Valve The Discharge Line Installations Check 13 IV OPERATING INSTRUCTIONS 14 Water Temperature Regulati...

Page 4: ...ition to the installation instructions found in this man ual the heater shall be installed according to all local and provincial or state codes or in the absence of such codes with the latest edition...

Page 5: ...hut Off Devices for Hot Water Supply Systems ANSI Z21 22 is applicable If this water heater has been exposed to flooding freezing fire or any unusual condition do not put it into operation until it ha...

Page 6: ...plate to confirm clearances Heaters with a volume of 19 gallons through 50 gallons and 60 gallon standard input must have the following minimum clearances to combustibles Front 102mm 4 in Sides and Re...

Page 7: ...ation a leaking tank or piping connections Refer to Figure 1 Under no circumstances is the manufacturer to be held responsi ble for any water damage in connection with this water heater Gas Supply Ins...

Page 8: ...l sources of ignition are de activated Contact your local gas authority for local requirements Gas Leak Testing Important This water heater and its gas connection must be tested for leaks before placi...

Page 9: ...Refer to Figure 5 a or b and Table 1 for proper sizing and location of combustion air ducts and openings CHECK LOCAL CODES a Two permanent openings shall be provided connecting the confined space e g...

Page 10: ...Equipment located in confined spaces all air from outdoors When supplying air directly from the outdoors using hor izontal ducting each opening shall have a free mini mum area of one square inch per 2...

Page 11: ...be installed according to the installation drawing Figure 10 If the indoor installation area is subject to freezing temperatures the water piping must be protected by insulation Water supply pressure...

Page 12: ...small quantities of hot water To prevent this from happening there are two recommendations 1 Install a diaphragm type expansion tank that is suitable for potable water on the cold water supply line Th...

Page 13: ...ected to the correct gas supply as shown on the rating plate Natural Gas Propane 6 Is the clearance between the water heater and combustible construction as per specifica tions 7 Is the water piping c...

Page 14: ...the point of use to exceed the ther mostat setting by up to 17 C 30 F If you experience this type of use you should consider using lower temperature settings to reduce scald hazards Should overheatin...

Page 15: ...outer door 3 Turnthetemperaturedialcounterclockwise toitslow est setting 4 Turn gas control knob clockwise to the OFF position 5 To clear any gas that may have accu mulated wait ten 10 minutes If you...

Page 16: ...etemperaturedialcounterclockwise toitslow est setting 4 Turn gas control knob clockwise to the OFF position 5 Toclearanygasthatmayhaveaccumulatedwait ten 10 minutes If you then smell gas STOP Follow i...

Page 17: ...UNE ODEUR DE GAZ Ne pas tenter d allumer d appareil Ne touchez aucun interrupteur ne pas vous servir des t l phones se trouvant dans le b timent Appelez imm diatement votre fournisseur de gaz depuis...

Page 18: ...0 minutes at ini tial start up to ensure that heavy condensation is not turning off the water heater Water Heater Sounds During the normal operation of the water heater sounds or noises may be heard T...

Page 19: ...the tank and restart the heater as directed under Operating Instructions If the water heater is going to be shut down for an extended period the drain valve should be left open Important Condensation...

Page 20: ...er 1 Follow first the procedure outlined in External Cleaning of the Flame arrester 2 Remove the outer door and locate the TCO switch on the right side of the combustion chamber door 3 Manually press...

Page 21: ...as those used for boiler treatment into the potable water used for space heating 3 Do not use this heater as a replacement for an existing boiler installation 4 If the space heating water system requi...

Page 22: ...hermostat ECO switch open 9 Door mount temperature cut off TCO switch activated 10 Defective igniter or electrode 11 Flammable vapors incident Flame GuardTM function activated 12 Low gas pressure 13 I...

Page 23: ...ice PROBLEM POSSIBLE CAUSE S CORRECTION INSUFFICIENT HOT WATER 1 Thermostat set too low 2 Sediment or lime in tank 3 Water heater too small 4 Wrong piping connections 5 Leaking faucets 6 Wasted hot wa...

Page 24: ...0 24 23 21 17 22 24 1 NIPPLE HOT OUTLET 2 NIPPLE COLD INLET 3 DRAFTHOOD 4 TEMPERATURE PRESSURE RELIEF VALVE 5 REDUCER RING 6 ANODE 7 DIP TUBE 8 FLUE BAFFLE 9 DRAIN VALVE 10 BURNER MANIFOLD ASSEMBLY 11...

Page 25: ...for the defective part s This warranty is limited to one replacement component part for each original part 3 Return of Defective Water Heater and Component Parts Manufacturer reserves the right to ex...

Page 26: ...rges for labour or other expenses incurred in the removal repair or replacement of the water heater or any component part s claimed to be defective or any expense incurred to remedy any defect in the...

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