6
STEP 5 – SENSOR TERMINAL WIRING
Connect 2-conductor wire between the HydroStat control and
the sensor terminals (3 and 4) on the
receiver. This connection
is polarity sensitive. Wire the output
Com terminal on the
receiver to the C terminal on the HydroStat control. Wire the
output
Sen terminal on the receiver to the OR (or WWSD)
terminal on the HydroStat control. At power-up the
receiver will
report a temperature of 75°F (24°C) until the first temperature
transmission is received (up to 10 minutes). Wait up to 10
minutes to verify that the temperature at the control is accurate.
If the temperature displayed at the control is unreasonably hot
the wires may be reversed.
4
Output
Com Sen
3
To outdoor sensor terminals on
Hydrolevel control
Outdoor Sensor Terminals
Locate the three quick connect posts on the
HydroStat circuit board. The sensor cable will
plug into two of these terminals depending on
the features to be used.
Outdoor Reset AND Warm Weather
Shutdown
Attach the spade connectors to the
right and
center spade posts (OR and C) for full outdoor
reset functionality including warm weather
shutdown protection. Wiring this way overrides
the Thermal Targeting function of the HydroStat
control.
Warm Weather Shutdown Only (WWSD)
Connect the wire ends to the
left and center
spade connectors (
WWSD and C) to add warm
weather shutdown functionality only. When
wired this way, the HydroStat control will utilize
its internal Thermal Targeting function to reset
the boiler temperature.
Models 3200-Plus, 3250-Plus
Model 4200 HydroStat-IC
Location of terminals varies by model
STEP 6 – SETTING THE HYDROSTAT CONTROL
IMPORTANT: The OS-200 must be plugged in to the HydroStat prior to setting the
control.
SETTING WARM WEATHER SHUTDOWN
The warm weather shutdown feature prevents the boiler from providing space heating
when the outside temperature reaches a level that you select. Available settings range
from OFF or 40°- 70°F. The boiler will still operate to satisfy a call for domestic hot
water. The factory default setting for the warm weather shutdown is 70°F.
