27
XC20
TABLE 5
Outdoor Control Terminal Designations and Input /Outputs (see figure 14 for terminal locations)
Designator
Description
Input
Output
Common
O
Unused on XC20, for heat pump applications
only.
N/A
Switched 24VAC
nominal
N/A
O OUT
Unused on XC20, for heat pump applications
only.
N/A
N/A
24VAC common
LO PS
Low pressure switch
N/A
5ma @18VAC
N/A
LO PS
Low pressure switch sensing connection
5ma @18VAC
N/A
N/A
Hi PS
High pressure switch
N/A
24VAC nominal
N/A
Hi PS
High pressure switch sensing connection
24VAC nominal
N/A
N/A
TP
Top cap thermostat switch (in series with the HI
PS)
N/A
24VAC nominal
N/A
TP
Top cap thermostat switch sensing connection
24VAC nominal
N/A
N/A
Cntctr
Control (inverter power) contactor switched out
put (in series with the HI PS and TC)
N/A
Switched 24VAC
Nominal
N/A
Cntctr
Contactor common
N/A
24VAC common
Fan PWM
PWM fan output
N/A
1097% duty cycle,
1923 VDC peak
N/A
COM
PWM fan common connection
N/A
N/A
Fan PWM com
mon
Fan Park
PWM fan parking spot for unused terminal, not
connected.
N/A
N/A
N/A
P2 Terminal Designations
O
Unused on XC20, for heat pump applications
only.
24VAC nominal from ther
mostat and loaded to draw
17ma at 30VAC
N/A
N/A
Y1
Y1 emergency input
24VAC nominal from ther
mostat and loaded to draw
17ma at 30VAC
N/A
N/A
C
24VAC nominal power return.
N/A
N/A
24VAC common
i
Low data line.
Data
Data
N/A
i+
High data line.
Data
Data
N/A
R
24VAC nominal power input.
24VAC nominal board main
power input.
N/A
N/A
DF
OEM test
N/A
N/A
N/A
TOUT
26Vdc transistor output to Lennox factory OEM
tester
N/A
N/A
N/A
TST
OEM test pin.
In each terminal box:
P2 Terminal 1 TEST
P2 Terminal 2 TOUT
P2 Terminal 3 DF
P2 Terminal 4 R
24VAC nominal 17ma @
30VAC
N/A
N/A
Содержание XC20-024-230-01
Страница 45: ...45 XC20 Unit Wiring Diagrams Figure 22 Typical Unit Wiring XC20 024 and 036...
Страница 46: ...46 XC20 Figure 23 Typical Unit Wiring XC20 048 and 060...
Страница 48: ...48 XC20 Factory Wiring Diagrams Figure 25 Typical Factory Wiring XC20 024 and 036...
Страница 49: ...49 XC20 Figure 26 Typical Factory Wiring XC20 048 and 060...
