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036-21031-004 Rev. A (0603)
Unitary Products Group 9
TYPICAL INSTALLATION
TYPICAL FIELD WIRING - (AIR HANDLER / ELECTRICAL HEAT)
THERMOSTAT
TO
INDOOR
BLOWER
TOCOIL
NEC
CLASS2
WIRING
NEC
CLASS1
WIRING
TO
POWER
SUPPLY
WEATHERPROOF
DISCONNECT
SWITCH
Sealopening(s)withpermagum
orequivalent
24”SERVICEACCESS
CLEARANCE
48”OVERHEAD
CLEARANCE
12”REARAND
SIDES
NOTE:Alloutdoorwiringmustbeweatherproof
THERMOSTAT
O
R
Y
W
G
O
R
C
Y
G
S1*
S2*
O
R
Y
ALLWIRINGTO BEACCORDANCEWITH NATIONALCODEAND/ORLOCALCODES.
INDOORUNIT
ELECTRICHEATERACCESSORY
3
XorL
BorC
2
TERMINALNOTUSEDONALLTHERMOSTATS.
OUTDOOR
UNIT
POWERWIRING
24VCONTROLWIRING(NECCLASS2)
POWERWIRING
208/230-1-60
CONTACTOR
GND.
SCREW
GND.
LUG
CIRCUIT
BREAKER
4
3
FORTYPICALFIELDWIRINGWITHN*VSVARIABLE
SPEEDAIRHANDLER,SEEN*VSINSTRUCTIONS.
4
CONNECTPOWERWIRINGTOTERMINALBLOCK
ONUNITSWITHOUTELECTRICHEATORUNITS
WITHOUTACIRCUITBREAKER.
T2
T1
L2
L1
M
W2
W1
W
W2/60
W1/66
BorC
XorL
BONNETSENSOR
CONNECTIONSFOR
ADD-ONSYSTEM.
*
POWERWIRING
208/230-1-60