White Rodgers 37C73U - User Manual

FOR YOUR SAFETY
“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.
Do not use this Natural Gas control on a LP Gas
water heater. Improper operation could occur, re-
sulting in personal injury and/or death due to Car-
bon Monoxide poisoning, fire, or explosion. Check
for proper gas type as listed on the rating plate
affixed to the water heater.
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS BEFORE INSTALLING OR OPERATING THIS
CONTROL COULD CAUSE PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH.
RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.
WARNING
!
1. This control must be installed or serviced only by a
professional.
2. Do not use force when moving the gas control knob. If
you cannot turn the knob with hand pressure only, the
control must be replaced.
3. Do not use the control if the knob will not “pop up” after
being depressed while the knob is in the PILOT posi-
tion. The mechanism is damaged and the control must
be replaced. Shut off gas to the water heater.
4. For your safety, this control is supplied with tamper
resistant screws. Do not attempt to repair or adjust the
control. If you experience problems, replace the control
immediately. Continuing to use a damaged control
could result in fire and/or explosion.
5. An odorant has been added to the gas to help you
detect it. Before lighting, search for the odor of gas by
sniffing at floor level around the water heater.
6. In some situations, the gas may lose its odor. To detect
unodorized gas, you must have a gas detector which
can be purchased from your gas company. If you do not
have a detector and have the slightest suspicion that
gas may be present, get out of the house and call the
gas company. DO NOT RELY TOTALLY ON YOUR
NOSE.
Scald burns occur in under one second with 160°
water, which this thermostat will deliver if the
temperature dial is set at “VERY HOT”. Lower
settings of the temperature dial will reduce the risk
of scald and will reduce your fuel bill.
WARNING
!
A
B
C
P
I
L
O
T
L
I
G
H
T
I
N
G
L
O
W
H
O
T
V
E
R
Y
RISK OF SCALDING
INCREASES WITH
HOTTER WATER
CAUTION:
37C73U
Water Heater Thermostat Control
Installation Instructions
FOR NATURAL GAS ONLY
WHITE-RODGERS
Printed in U.S.A.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
PART NO. 37-6092A
9912
Fixed Adjustment Main and Pilot Regulators
The main and pilot gas regulators require no field
service. They automatically control and maintain the
outlet main and pilot burner gas pressure.

Summary

Safety - Gas Leak Detection

Installation

Removing Old Control

Step-by-step instructions for safely disconnecting and removing the existing gas control unit from the water heater.

Special Installation Note

Specific instructions regarding extension adaptor fittings when replacing certain types of gas controls.

Installing New Control

Guidelines for connecting the new gas control, including pipe joint compound usage and thread preparation.

To Light Appliance

Check Gas Lines for Leaks

Procedure for checking gas lines for leaks using soapy water solution before lighting the pilot.

Pilot Lighting Procedure

Detailed steps for safely lighting the pilot light using the gas control knob and a match.

Temperature Regulation

Setting Water Temperature

Guidance on adjusting the water temperature dial for optimal settings and scald prevention.

To Turn Off Gas to Appliance

White Rodgers 37C73U Specifications

General

Brand	White Rodgers
Model	37C73U
Category	Thermostat
Language	English