General Operation
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IM-HC 561174 1120 Basic Heating Control
3.5 Temperature Control
An indoor sensor may be used in order to provide indoor temperature
feedback. The indoor sensor is connected to the COM and INDR terminals
(11 and 13). With the indoor sensor connected, the Basic Heating Control is
able to measure the actual room temperature. With this information, the Basic
Heating Control fine-tunes the supply water temperature in the mixing system
to prevent overheating or underheating. To adjust the room temperature for
the mixing zone, use the ROOM setting in the ADJUST menu at the control.
3.6.1 System Circulator Pump Operation (Sys Pmp)
The system circulator pump contact (Sys Pmp, terminal 3) remains closed as long
as the Basic Heating Control is not in Warm Weather Shut Down. During WWSD,
the system Circulator is operated periodically based on the Exercise feature.
3.6.2 Mixing Target Temperature (MIX TARGET)
The MIX TARGET temperature is calculated from the heating curve settings, outdoor
air temperature, and optionally, indoor air temperature. The control displays the
temperature that it is currently trying to maintain as the mixing supply temperature.
3.6.3 Indoor Sensor (Optional)
3.6 Temperature Control Installer Information
3.6.4 Outdoor Design (OUTDR DSGN)
The OUTDR DSGN is the outdoor air temperature that is typically the
coldest temperature of the year where the building is located. This
temperature is used when performing the heat loss calculations for the
building. If a cold outdoor design temperature is selected, the mixing
supply temperature rises gradually as the outdoor temperature drops.
If a warm outdoor design temperature is selected, the mixing supply
temperature rises rapidly as the outdoor temperature drops.
Summary of Contents for IM-HC 561174 1120
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