Single Thermostat/Multiple Ptac Units - Carrier PREMIER 52P SERIES Architects And Engineers' Manual

WIRING DIAGRAMS (52P AND 52C) (cont)
Typical Wiring for Multiple PTAC Units Connected to a Single Wall Thermostat
R
MASTER
Y
PTAC
W
G
O
C
R
UNIT 1
Y
W
G
O
C
R
UNIT 2
Y
W
G
O
C
R
UNIT 3
Y
W
G
O
C
R
T'STAT
Y
W
G
O
C
All units must be connected to same ground source.
To accomplish this, be sure to connect all units to
the same breaker box. Failure to do so may cause
damage to the unit.
NOTES:
1. Do not daisy chain R (24 VAC).
2. Maximum of 4 PTAC units can be connected to one single wall
thermostat.
3. Wall thermostat wire is field-supplied and should be 18 to
20 gage solid thermostat wire.
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