Aprilaire 8910 HVaC WIRIng DIagRaMs, InDooR aIR QualITy WIRIng DIagRaMs

8 9
note: Outputs are 24VAC dry contact. Please see individual product installation instructions for more details.
HVaC WIRIng DIagRaMs
HeaT PuMP sIngle TRansfoRMeR (use JuMPeR WIRe)
C
R
W
W2
B
Y
Y2
O
G
L
RH
RC
C
3
EQ
HPHC
G
Y3
Y2
Y
W3
W2
W
FAULT DETECT
REVERSING VALVE
THERMOSTAT
REVERSING VALVE
1
2
2nd COMPRESSOR
1st COMPRESSOR
FAN
1st HEATING
2nd HEATING
HEAT PUMP TRANSFORMER
HeaT PuMP TWo TRansfoRMeR (ReMoVe JuMPeR WIRe)
THERMOSTAT
TRANSFORMER
W
W2
W3
Y
Y2
Y3
G
HC HP
EQ
3
C
RC
RH
L
G
O
Y2
Y
B
W2
W
R
C
HEAT PUMP TRANSFORMER
HEATING TRANSFORMER
1
FAULT DETECT
REVERSING VALVE
REVERSING VALVE
2nd HEATING
1st HEATING
FAN
1st COMPRESSOR
2nd COMPRESSOR
2
1
1R and C can be
powered from the
HVAC equipment
transformer or any
other constantly
powered 24VAC
source.
InDooR aIR QualITy WIRIng DIagRaMs
InDooR aIR QualITy WIRIng WITH sePaRaTe TRansfoRMeRs
InDooR aIR QualITy WIRIng WITH a sIngle TRansfoRMeR
TRANSFORMER
TRANSFORMER
TRANSFORMER
VNT
DH
HUM
EAC
DH
DHno
com
nc
DEHUMIDIFIER
NORMALLY
CLOSED DAMPER
HUMIDIFIER
PILOT RELAY FOR
120 VAC TO EAC
nc
com
no
DH
DH
EAC
HUM
DH
VNT
TRANSFORMER
HUMIDIFIER
8120 DAMPER
DEHUMIDIFIER
PILOT RELAY FOR
120 VAC TO EAC
note: Outputs are 24VAC dry contact. Please see individual product installation instructions for more details.