Delta PG PLUS-25 Operations Instructions download pdf (Page 60)

54

Temperature Limits

SECTION XII - Temperature Limits

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) T h e r m o s t a t

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

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.

To adjust the thermostat settings:

- Turn thermostat knob clockwise

to increase water temperature

- Turn thermostat knob counter-

clockwise to decrease water

t e m p e r a t u re .

NOTICE

NOTICE

DANGER

Fig. 38: Recommended Secondary

Thermostat Setting

Fig. 39: Recommended Primary Thermostat

Setting

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