White Rodgers 921 - Manual
White Rodgers 921 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – SPECIFICATION; Seconds; INSTALLATION; REMOVING THE OLD CONTROL; NOTE
- Page 3 – PRESSURE REGULATOR ADJUSTMENT
- Page 4 – OPERATING INSTRUCTIONS
- Page 5 – SHUTTING OFF THE APPLIANCE; Vacation Shutdown; WARNING
- Page 6 – Wiring Diagr am; WIRING DIAGRAM
- Page 7 – SEQUENCE OF OPERATIONS
- Page 8 – TROUBLESHOOTING
- Page 10 – NOTES
Do not use this Natural Gas control on LP Gas water
heater. Improper operation could occur, resulting in
personal injury and/or death due to Carbon Monoxide
(CO) poisoning, fire, or explosion. Check for proper
gas type as listed on the rating plate affixed to the
water heater.
“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.
www.white-rodgers.com
www.emersonclimate.com
37E73A-918, 921, 922 or 927 INTELLI-VENT™
For Natural Gas Only
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
PART NO. 37-7110A
0950
The 37E73A-9XX INTELLI-IGNITION™ control is a
combination gas valve, ignition control, and thermostat for
use on Power Vented water heaters. The microcomputer in
the control supervises the ignition sequence and timings
for the water heater, and provides diagnostic codes in case
of system malfunction. The control provides direct burner
ignition using the White-Rodgers’ Silicon Nitride ignitor. The
control uses the INTELLI-IGNITION™
technology to greatly
extend the ignitor’s life.
Adjustable Regulator Controls: The gas regulator on this
control requires no field service. The regulator is factory
adjustable for the proper burner gas pressure.
DESCRIPTION
PRECAUTIONS
FIRE, SHOCK AND EXPLOSION HAZARDS
• Shut off main gas to appliance for service or until
installation is complete.
• Disconnect electric power before servicing.
• Do not exceed the specified voltage.
• Replace existing control with recommended
model.
• Protect the control from direct contact with water
(dripping, spraying, rain, etc.)
• If the control has been in direct contact with water,
replace the control.
• Label all wires before disconnection when servic
-
ing controls. Wiring errors can cause improper and
dangerous operation.
• Route and secure wiring away from flame.
• Ensure proper earth grounding of appliance.
• Ensure proper connection of line neutral and line
hot wires.
• Do not use tools to operate this control.
• Do not take control apart, there are no serviceable
parts inside.
• Do not use control if it has been flooded.
• Never stand on the control or use as a step.
WARNING
!
WARNING
!
WARNING
!
CONTENTS
Description ............................................................. 1
Precautions ............................................................ 1
Specifications ......................................................... 2
Installation .............................................................. 2
Operation ................................................................ 7
Wiring ..................................................................... 6
Troubleshooting ...................................................... 8
Water Heater Thermostat Control Installation Instructions
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Summary
2 SPECIFICATION ELECTRICAL RATINGS: Input and Frequency: 120 VAC, 60 HzOutput Ratings: Ignitor Load: 2 Amps maximum Inducer Draft Motor: 3 Amps Full Load, 4 Amps Locked Rotor Current: 0.2 Amps @ 120 VAC Range of Regulation (Btu/Hr) Minimum: 30,000 Maximum: 150,000 Pressure Regulator Setting: Factory...
3 GROUND JOINT UNION INTELLI-VENT™ CONTROL GAS SUPPLY PIPE TEE DRIP LEG (SEDIMET TRAP) 3" MINIMUM (MANDATORY) PIPE CAP SHUT-OFF VALVE d. Check all new water piping for leaks. Repair as needed. 8. Open the gas shutoff valve.9. BEFORE TURNING ON THE APPLIANCE, CHECK THE GAS LINES FOR LEAKS. a. Use...
4 TEMPERATURE INDICATORS TEMPERATURE ADJUSTMENT BUTTONS b. To increase the temperature press and release the HOTTER button once. The temperature indicators will now display the new temperature setting. Press and release the HOTTER button until you have reached the desired setting. HOLDING DOWN THE B...
