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13

 OPERATION

NEVER OPERATE THE HEATER WITHOUT FIRST BEING
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE
AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF
VALVE OPENING OF THE HEATER. DO NOT ATTEMPT TO
OPERATE HEATER WITH COLD WATER INLET VALVE CLOSED.

FILLING

1.

Close the heater drain valve by turning handle clockwise,
Figure 1.

2.

Open a nearby hot water faucet to permit the air in the system
to escape.

3.

Fully open the cold water inlet pipe valve allowing the heater
and piping to be filled, see Figure 1.

4.

Close the hot water faucet as water starts to flow.

5.

The heater is ready to be operated.

TEMPERATURE REGULATION

 

 DANGER

THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT
WATER TEMPERATURES REQUIRED FOR AUTOMATIC
DISHWASHER AND LAUNDRY USE CAN CAUSE PAINFUL
SCALDING WITH POSSIBLE SERIOUS AND PERMANENT
INJURY. THE TEMPERATURE AT WHICH INJURY OCCURS
VARIES WITH THE PERSON’S AGE AND THE TIME OF THE
EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN,
AGED OR DISABLED PERSONS INCREASES THE HAZARDS
TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT
WATER TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER
LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A
BATHTUB OR SHOWER.

THE WATER HEATER SHOULD BE LOCATED IN AN AREA
WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS. IF
A SUITABLE AREA IS NOT AVAILABLE, A COVER SHOULD BE
INSTALLED OVER THE THERMOSTAT TO PREVENT
TAMPERING.

It is recommended that lower water temperatures be used to
avoid the risk of scalding.  It is further recommended, in all cases,
that the water temperature be set for the lowest temperature
which satisfies your hot water needs. This will also provide the
most energy efficient operation of the water heater. The water
temperature setting was factory set at the lowest temperature;
Pressing the "COOLER" button decreases temperature and
pressing the "HOTTER" button increases the temperature.

SETTING THE WATER HEATER TEMPERATURE AT 120°F (49°C)
(APPROX. “ ” MARK ON TEMPERATURE SETTING OF GAS
VALVE) WILL REDUCE THE RISK OF SCALDS. 

Some states

require settings at specific lower temperatures.

Figure 28 shows the approximate water temperatures produced
at various thermostat dial settings. Short repeated heating cycles
caused by small hot water uses can cause temperatures at
the point of use to exceed the thermostat setting by up to 30°F
(-1°C). If you experience this type of use you should consider
using lower temperature settings to reduce scald hazards.

Valves for reducing the point of use temperature by mixing cold
and hot water are available, see Figure 2. Also available are
inexpensive devices that attach to faucets to limit hot water
temperatures. Contact a licensed plumber or the local plumbing
authority.

To avoid any unintentional changes in water temperature
settings, the control has a tamper resistant feature for changing
the temperature setting. To change the temperature setting follow
these instructions:

1.

"Wake Up" the temperature indicators by holding down both
"COOLER" and "HOTTER" temperature adjustment buttons
at the same time for one second, see Figure 28. One or two
of the temperature indicators will light up. These indicators
will only remain on for 30 seconds if no further buttons are
pressed. After 30 seconds the control will go back to "Sleep"
mode.

2.

Release both of the temperature adjustment buttons.

A.

To decrease the temperature press and release the
"COOLER" button until the desired setting is reached.

B. To increase the temperature press and release the

"HOTTER" button until the desired setting is reached.

NOTE: Holding down the button will not continue to lower or
raise the temperature setting. The button must be pressed and
released for each temperature change desired.

SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL
TO SHUT OFF, TURN OFF THE MAIN MANUAL GAS SHUTOFF
VALVE TO THE APPLIANCE, SEE FIGURE 1(G).

Time to Produce

Display

2nd & 3rd Degree

Temperature Setting

A B C

Burns on Adult Skin

   

C=Flashing=approx. 160°F(71

o

C)

   About 1/2 seconds

C = Approx. 150°F(66

o

C)

About 1 1/2 seconds

B = Approx. 140°F(60

o

C)

Less than 5 seconds

A = Approx. 130°F(54

o

C)

About 30 seconds

  

 = Approx. 120°F(49

o

C)

More than 5 minutes

WARM = Approx. 80°F(27

o

C)

 - - - - - - - - - - - - - -

FIGURE 28.

Содержание GPDH

Страница 1: ...er heater from A O Smith Water Products Company We appreciate your confidence in our products You should thoroughly read this manual before installation and or operation of this water heater Please pay particular attention to the important safety and operating instructions as well as the WARNINGS and CAUTIONS ADIVISION OFA O SMITH CORPORATION www aosmithwaterheaters com GET TO KNOWYOUR WATER HEATE...

Страница 2: ...CONTROL HARNESS AND INSIDE JACKET GAS MODEL GPDH GPDT GPDX WITH HOT SURFACE IGNITION CERTAIN MODELS ARE EQUIPPED WITH SIDE PLUMBING CONNECTIONS FOR SPACE HEATING HOT AND COLD FITTING ASSEMBLIES PART NO 900126 2 TEMPERATURE INDICATORS TEMPERATURE ADJUSTMENT BUTTONS TYPICALNATURALGAS PILOT MAIN BURNER HOT SURFACE IGNITION ASSEMBLY Replacement parts and recommended delimer may be ordered through auth...

Страница 3: ...aking an insulation blanket unnecessary WARNING Should you choose to apply an insulation blanket to this heater you should follow these instructions see Figure 1 for identification of components mentioned below Failure to follow these instructions can restrict the air flow required for proper combustion potentially resulting in fire asphyxiation serious personal injury or death Do not cover the ou...

Страница 4: ...THE HEATER OR TO LOWER FLOORS OF THE STRUCTURE When such locations cannot be avoided a suitable drain pan should be installed under the heater see Figure 1 The pan should have a minimum length and width of at least 2 inches 51mm greater than the diameter of the heater and should be piped to an adequate drain Drain pans suitable for these heaters are available from your dealer or A O Smith Water Pr...

Страница 5: ...UT OFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1 2 PSI 3 5 kPa GAS SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTEDFROMTHEHEATER FORTESTPRESSURESAT 1 2 PSI 3 5 kPa OR LESS THE APPLIANCE NEED NOT BE DISCONNECTED BUT MUST BE ISOLATED FROM THE SUPPLY PRESSURETESTBYCLOSINGTHE MAIN MANUALGAS VALVE BEFORE PLACING THE HEATER IN OPERATION CHECK FOR GAS LEAKAGE USE ...

Страница 6: ...ve any door window or gravity air inlet into the building see Figure 4 The Power Direct Vent outlet terminal of over 50 000 BtuH input models shall terminate at least 12 30 5 cm below 12 30 5 cm horizontally from or 12 30 5 cm above any door window or gravity air inlet into the building see Figure 4 18 45 7 cm minimum from other natural draft gravity direct vent power vent or power direct vent app...

Страница 7: ...pported at 3 1 2 foot 8 9 cm intervals and vertical runs supported at 5 foot 1 5 cm intervals VENTING THROUGH AN OUTSIDE WALL A ALL 75 GAL 283 9L 65 000 70 000 BTU HR MODELS 50 GAL 189 3L 60 000 65 000BTU HRMODELS SEE FIGURE 10 In the carton is supplied 1 Two 3 inlet and outlet PVC Schedule 40 45 vent caps 2 A 3 ABS Schedule 40 90 street elbow used to connect the outlet vent pipe to the water heat...

Страница 8: ... vent piping cannot under any circumstances be run downhill FIGURE 12 The vent piping can be installed as follows 1 Horizontal runs require a minimum1 8 3 2mm rise per 5 1 52 m FIGURE 13 FIGURE 14 FIGURE 15 2 The total vertical and horizontal vent runs cannot exceed the maximum length with the number of 90 elbows as specified in the table below If more elbows are required the venting distance must...

Страница 9: ...mer cleaner 4 Apply a thin coat of cement to fitting avoiding puddling inside 5 Apply a liberal coat of cement to pipe leaving no voids 6 QUICKLY assemble parts while cement is fluid If you wait too long re coat pipes 7 Push pipe completely into socket of fitting turning as it goes until it bottoms 8 Hold pipe and fitting together for 30 seconds Then carefully clean off excess with a cloth Allow c...

Страница 10: ...al 189 3 L Hi BTU input all 75 Gal 283 9 L Models only is supplied on certain models only More may be required and must be supplied locally 1 The water heater requires its own separate venting system 2 Only 3 ABS Schedule 40 piping and fittings are acceptable materials on the first 5 1 52 m of the outlet vent system for some 50 Gal 189 3 L and 75 Gal 283 9 L models 3 3 PVC ABS or CPVC Schedule 40 ...

Страница 11: ...secure with screws FIGURE 24 SCHEMATIC DIAGRAMS FIGURE 25 WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER IF ANY OF THE ORIGINAL WIRES SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH APPLIANCE WIRE MATERIAL WITH MINIMUM TEMPERATURE RATING OF 105 C AND A MINIMUM SIZE OF NO 18 AWG FIGURE 26 T P VALVE AND PIPE ...

Страница 12: ...cond Then press the COOLER button until the WARM indicator light appears BEFORE OPERATING ENTIRE SYSTEM MUST BE FILLED WITH WATERANDAIR PURGED FROMALL LINES 1 STOP Read the safety information above on this label 2 Set the ON OFF switch on the control box to the ON position 3 Set the thermostat to the lowest setting by first pressing the COOLER and HOTTER buttons together and holding for 1 second T...

Страница 13: ...G OF GAS VALVE WILL REDUCE THE RISK OF SCALDS Some states require settings at specific lower temperatures Figure 28 shows the approximate water temperatures produced at various thermostat dial settings Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the thermostat setting by up to 30 F 1 C If you experience this type of use you shou...

Страница 14: ...onds Flame Recognition Period 1 second Ignition Trial 4 seconds Interpurge 5 seconds Post purge 5 seconds Retries 2 Reset from Lockout 1 hr Flame Sensing Nominal HSI Off Run Mode 4 0µ DC HIGH ALTITUDE INSTALLATION WARNING INSTALLATIONS ABOVE 2000 610 m FEET REQUIRE REPLACEMENT OF THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL FUEL GAS CODE ANSIZ223 1 NFPA54 FAILURE TOREPLACETHEORIFICEWILLRESUL...

Страница 15: ...ING OUT OF THE VALVE DURING THIS CHECKING OPERATION MAY BE EXTREMELY HOT AVOID CONTACT AND DISCHARGE SAFELY TO PREVENT WATER DAMAGE DRAINING If the heater is to be shut off and exposed to freezing temperatures it must be drained Water if left in the tank and allowed to freeze will damage the heater Turn off the gas and cold water inlet valve to the heater Open a nearby hot water faucet and the hea...

Страница 16: ...ontact your dealer or theA O Smith authorized service agent in your area and explain to them why you are not satisfied This will usually correct the problem If after working with your dealer or service agent the problem has not been resolved to your satisfaction please let us know by either writing to us at A O Smith Water Products Company Service Department 106 Adkisson St Ashland City TN 37015 o...

Страница 17: ...s correct and secure 2 Replace hot surface igniter System in lockout 1 Gas supply is off or too low to operate 2 Hot surface igniter not positioned correctly 3 Low voltage to the water heater 4 Electric polarity to unit is incorrect test and correct Problem in the gas valve driver circuit 1 Turn power to the water heater off for 10 seconds and the back on 2 Replace gas control valve Problem with t...

Страница 18: ...ice A Dirt in burner ports Turn off heater and gas clean burner head B Combustion air path restricted Check intake venting arrangements for YELLOWFLAME obstructions C Not enough dilution air for proper Check Intake venting arrangement for combustion obstructions A Water on the floor under heater See CONDENSATION section CONDENSATION B Water dripping from pan Provide drip TEE to catch condensation ...

Страница 19: ...IBILITY UNDER THIS LIMITED WARRANTY THE WARRANTOR WILLPROVIDE ONLY A REPLACEMENT WATER HEATER OR PART THEREOF THE OWNER IS RESPONSIBLE FOR ALL OTHER COSTS Such costs may include but are not limited to LIMITED RESIDENTIAL GAS WARRANTY a Labor charges for service removal or reinstallation of the water heater or part thereof b Shipping and delivery charges for forwarding the new water heater or repla...

Страница 20: ...20 125 SOUTHEAST PARKWAY FRANKLIN TN 37068 Phone 1 800 433 2545 Fax 1 800 433 2515 www aosmithwaterheaters com email parts hotwater com ...

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