White Rodgers 37C73U User Manual

Page of 4
After the gas connections are made, water is in the heater and 
the pilot light is ignited, the control must be set to the desired 
water temperature.
The recommended water temperature dial setting is at the ar-
row ( ). The water temperature out of the heater at this setting 
will be approximately 120
o
F. 
If you use hot water frequently and in short spurts, water tem-
perature can occasionally exceed the temperature setting by up 
to 30
o
F because of the dynamics of the appliance.
The arrow ( ) setting is the safest and most economical. If 
the want hotter water, rotate the water temperature dial coun-
terclockwise (
) to a higher setting. Approximate water 
temperature delivered at the different settings is shown in the 
following table.
To avoid scald injury, set the control at the lowest setting which 
will still deliver your needed hot water.
Set the control to lowest setting by turning water temperature 
dial clockwise (
) to the "PILOT LIGHTING" position on 
dial  (as shown in Figure 3). 
DO NOT FORCE.
Turn gas control knob clockwise to "PILOT".    
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
WARNING
!
The hotter the water the greater the risk of scald
injury and the shorter the time to cause injury.
 
 
APPROXIMATE 
APPROXIMATE
 SETTING 
TEMPERATURE 
TIME TO
 
 
(F) 
CAUSE INJURY
 
(   ) 
120°  
5 Minutes
 
130°   
30 Seconds
 
140°   
5 Seconds
 
150°   
1.5 Second
 
   VERY 
160°               Under 1 Second             
    HOT
TEMPERATURE REGULATION 
TO TURN OFF GAS TO APPLIANCE 
WATER
TEMPERATURE
DIAL
TEMPERATURE
POINTER
Figure 3. Water Temperature Dial
Be sure to protect babies and the infirm or others with impaired 
mobility who cannot get out of the hot water quickly. They are 
the people most commonly hurt in scald injuries and in need of 
lower temperature and other protection like supervision, point-of 
-use temperature control equipment or a system mixing valve. 
A point-of-use valve or a system mixing valve can be obtained 
from your plumber.
WARNING
!
Never allow children to use a hot water tap, or to draw
their  own  bath  water.  Never  leave  a  child  or  impaired
person unattended in a bathtub or shower. Scald burns
can result.
Turn gas control knob clockwise to "OFF".  
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
O
N
O
F
F
PILOT
NOTE
Gas control knob must be depressed slightly to turn from 
"PILOT" to "OFF". 
Do not use tools or excessive force.
White-Rodgers is a division 
of Emerson Electric Co.
The Emerson logo is a  
trademark and service mark 
of Emerson Electric Co.
www.white-rodgers.com
www.emersonclimate.com