Automated Logic RC642D - Page 36

32
To use this
control program...
With these features...
Set the rotary
switches to...
Air source heat
pump - reverse to
heat
•
Scheduled operation
• Freeze protection (optional) – Requires
sensor
• Single-speed fan
• 2-stage compressor
• 2-stage supplemental heat
• Economizer – zone temp control with fixed %
min OA
• Outdoor air temp – Requires sensor if OA
dampers are to operate as an economizer.
Otherwise they will open fully when the zone
is occupied.
• Discharge temperature control (optional) –
Requires sensor
NOTE
This control program is identical to #03
below except that heat is provided when the
reversing valve output closes.
02
Air source heat
pump - reverse to
cool
• Scheduled operation
• Freeze protection (optional) - Requires sensor
• Single-speed fan
• 2-stage compressor
• 2-stage supplemental heat
• Economizer - zone temp control with fixed %
min OA
• Outdoor air temp – Requires sensor if OA
dampers are to operate as an economizer.
Otherwise they will open fully when the zone
is occupied.
• Discharge temperature control (optional) -
Requires sensor
NOTE
This control program is identical to #02
above except that cooling is provided when the
reversing valve output closes.
03
Air source heat
pump – intermittent
fan - reverse to cool
• Scheduled operation
• Single-speed fan – Cycles on and off with
heating or cooling
• 2-stage compressor
• 2-stage supplemental heat (optional)
• Discharge temperature limit control (optional)
– Requires sensor
NOTE
This control program is identical to #05
below except that heat is provided when the
reversing valve output closes.
04