4
STEP 2 – PROVIDE POWER
Wiring to HydroStat Model 3200-Plus
(Gas applications)
The 3200-Plus provides a 24 volt power
supply in the thermostat terminal block
located at the top left hand corner of the
control. Make connections as shown
below.
Wiring to HydroStat Model 3250-Plus
(Oil applications)
The 3250-Plus is not equipped with a
24 VAC power supply. Locate an existing
24 volt power supply or add a transformer
(supplied by others) as shown below.
The receiver unit must be powered with 24 VAC
Batteries in the Transmitter unit
Remove the cover from the
transmitter unit. Insert the
included batteries as marked on the battery holder.
1.5V lithium batteries are required to provide the
specified battery life and temperature range. Alkaline
batteries have short life spans and may fail during
cold weather.
Wiring to HydroStat-IC Model 4200
The modeal 4200 is not equipped with a
24 VAC power supply. Locate an existing
24 volt power supply or add a transformer
(supplied by others) as shown below.