Honeywell CT1500 User Manual download pdf (Page 21)

21 69-0333—6

ANTICIPATOR

SETTING LEVER

ANTICIPATOR

SCALEPLATE

M9616

Servicing The Thermostat

System on-length adjustment

NOTE: Not applicable on CT1503 Millivolt Heat

model.

If the thermostat seems to cycle the heating

system too fast or too slow, adjust the heating

system on-length by moving the anticipator

setting lever one indicator mark at a time (Fig. 6);

a higher setting will increase heating system on

length a lower setting will decrease heating

system on-length. Observe the heating system

operation after each adjustment.

The heat anticipator must be correctly set.

An incorrect setting can result in room tempera-

ture swings or burn out the anticipator, which

would void the thermostat warranty.

Fig. 6—Heat anticipator setting.

IMPORTANT:

Most hot water systems require

a setting of 1.3 times the valve current

rating.

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