2: Air Source Heat Pump - Reverse To Heat; Control Schematic; Point List - Automated Logic RC642 Technical Instructions

#2: Air source heat pump - reverse to heat

Control schematic

AO - Mixed air dampers
(optional)
AI - Outside air temp
(optional)
T
OA

Point list

Point Name
Zone temp
Zone setpoint
adjust
Zone override
Outdoor air temp
Discharge air temp
Freezestat
Compressor stage 1
Compressor stage 2
N.O.
M
M T
N.C.
BO - Reversing valve
BO - Compressor stage 1
BO - Compressor stage 2
Hardware Points
AI
X
X
X
X
BI - Freezestat
(optional)
M
HP
BO - Fan start/stop
BI BO AO I/O #
Internal
Internal
X Internal
UI-1
UI-2
X UI-3
X DO-1 (Y1)
X DO-2 (Y2)
47
AI - Discharge air temp
(optional)
T
Elec
BO - Heating stage 1
(optional)
BO - Heating stage 2
(optional)
AI - Zone temp
AI - Zone setpoint adjust
T
BI - Zone override
Comments
Optional – Requires sensor
(Type II thermistor)
NOTE Short input to ground if
not used.
Optional – Requires sensor
(Type II thermistor)
Optional – Requires sensor
(dry contact)
Relay output
Relay output
DA