Temperature Limits
SECTION XII - Temperature Limits
DANGER
Studies have indicated that dangerous bacteria can form in the potable water distribution system if certain minimum water temperatures are not maintained. For prevention of this, it is recommend- ed that the Secondary Thermostat be set as shown in Figure 38 and maintained at 130ºF to 140ºF.
Setting Primary Thermostat Limit.
-The Primary (Space Heating) Thermostat located on the right side of the control panel acts as the high limit during the space heating function.
-Set the thermostat knob as shown in Figure 39.
-Maximum limit setting is 180ºF
NOTICE
To ensure proper function of the limits the Primary Thermostat must be set higher than the Secondary Thermostat.
Adjustment of Secondary Thermostat Limit
-The Secondary (Domestic) Thermostat located on left side of the control panel maintains the minimum domestic water storage temperature.
-Set the thermostat knob as shown in Figure 38.
-Maximum limit setting is 140ºF.
NOTICE
To adjust the thermostat settings:
-Turn thermostat knob clockwise
to increase water temperature
-Turn thermostat knob counter-
clockwise 
to decrease water temperature.
Fig. 38: Recommended Secondary
Thermostat Setting
Fig. 39: Recommended Primary Thermostat Setting
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