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VT8800/WT8800 WATER HEATER CONTROLS

69-1731

10

WARNING

Scalding Hazard.
Can cause burns, severe injury or death.

Never move temperature setpoint knob past the 
HOT setting without checking water temperature 
at the faucet, and readjusting until comfortably 
warm to the touch. Consider the ages and health 
of all who will come into contact with heated water.

IMPORTANT

Follow the operating instructions provided by the 
manufacturer of your water tank appliance. The 
information in this form describes a typical water 
heater control application, but the specific con-
trols used and the procedures outlined by the 
manufacturer of your appliance can differ, requir-
ing special instructions.

STOP: READ THE WARNINGS 

ABOVE.

If the appliance does not turn on when the setpoint knob 
is set several degrees above the previous temperature, 
follow these instructions:

1.

Set the temperature setpoint knob to OFF.

2.

Turn off the main gas valve to the appliance.

3.

Wait five minutes to clear out any unburned gas. If 
you then smell gas, STOP! Follow step 1 in the 
warning above. If you DO NOT smell gas, continue 
with the next step. 

4.

Turn on the main gas valve to the appliance.

5.

Replace the water heater control access panel, if 
provided.

6.

Restart the appliance by performing lighting 
procedure.

7.

Set the setpoint knob to the desired setting.

8.

If the appliance does not turn on, turn off the main 
gas valve to the appliance and contact a qualified 
service technician for assistance.

TURNING OFF THE APPLIANCE

Vacation Shutdown—

1.

Set the temperature setpoint knob to VAC while you 
are away. Temperature will stay at minimum set-
point.

Complete Shutdown—

1.

Turn device knob to OFF. Turn off the gas supply to 
the appliance. Appliance will completely shut off. 

2.

Follow the procedure in the Instructions to the 
Homeowner section above to resume normal 
operation.

69-1731.fm  Page 10  Monday, October 10, 2005  11:02 AM

Summary of Contents for VT8800

Page 1: ...tlet Mounting Mounting in upright position only Control Input Voltage Minimum 350 mV dc open circuit Voltage Maximum 850 mV dc open circuit Capacity See Table 1 Conversion Use conversion factors in Table 2 to convert capacities for other gases Regulation Range VT8800 with 1 2 in NPT inlet and 1 2 in Inverted Flare Outlet Natural Gas Minimum 30 000 Btuh Maximum 85 000 Btuh LP Gas Minimum 40 000 Btu...

Page 2: ... fail If the appliance is in a humid atmosphere make sure air circulation around the control is adequate to prevent condensation Also regularly check out the system Corrosive Chemicals Corrosive chemicals can attack the control eventually causing a failure If chemicals are used for routine cleaning avoid contact with the control Where chemicals are suspended in air as in some industrial or agricul...

Page 3: ...ained when the appliance is installed INSTALLATION When Installing This Product 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After installation ...

Page 4: ...flare outlet facing down Secure valve using one screw two piece design 5 Install WT8800 control electronics on the three pins of the gas valve and snap into place Secure with one screw 6 Be certain to mount the VT8800 WT8800 so that the gas flow is in the direction of the arrow on the inlet side of the control 7 Follow steps in Connect Gas Supply section which follows IMPORTANT These water heater ...

Page 5: ...e only ANSI approved compounds Wiring Follow the wiring instructions furnished by the appliance manufacturer if available or use the general instructions provided below When these instructions differ from the appliance manufacturer follow the appliance manufacturer instructions Make sure wiring insulation does not get cut by sharp edges NOTE All wiring must comply with applicable electrical codes ...

Page 6: ...temperature at the setpoint knob WARNING Scalding Hazard Can cause burns severe injury or death Never move setpoint knob past the Hot setting unless extremely hot water is desired Always check water temperature at the faucet and readjust until comfortably warm to the touch Consider the ages and health of all who will come in contact with heated water Perform Gas Leak Test WARNING Fire or Explosion...

Page 7: ...etermined individually for each application Some considerations are 1 Cycling frequency Appliances that may cycle 10 000 times annually should be checked monthly 2 Intermittent use Appliances that are used seasonally should be checked before shutdown and again before the next use 3 Consequence of unexpected shutdown Where the cost of an unexpected shutdown would be high the system should be checke...

Page 8: ... available Inspect thermopile connection to valve flame coverage on thermopile inspect orifice assembly for dirt check inlet pressure run open circuit thermopile output test and change thermopile if output is low 3 flashes Sensor or Valve failure Pilot On Main Valve Off Restart control If main turns on after restart replace sensor If main does not turn on after restart replace valve 4 flashes Valv...

Page 9: ...gas supply at the appliance service valve On LP systems turn off the gas supply at the gas tank Do not light any appliances in the house Do not touch electrical switches or use the phone Leave the building and use a neighbor s phone to call your gas supplier If you cannot reach your gas supplier call the fire department 2 The water heater control must be replaced in event of any physical damage ta...

Page 10: ...tructions 1 Set the temperature setpoint knob to OFF 2 Turn off the main gas valve to the appliance 3 Wait five minutes to clear out any unburned gas If you then smell gas STOP Follow step 1 in the warning above If you DO NOT smell gas continue with the next step 4 Turn on the main gas valve to the appliance 5 Replace the water heater control access panel if provided 6 Restart the appliance by per...

Page 11: ...11 69 1731 69 1731 fm Page 11 Monday October 10 2005 11 02 AM ...

Page 12: ...l Limited Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario M1V 4Z9 customer honeywell com U S Registered Trademark 2005 Honeywell International Inc 69 1731 S A 10 05 69 1731 fm Page 12 Monday October 10 2005 11 02 AM ...

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