Wiring Schematics - Water Furnace SAH Series Installation Manual

SAH AIR HANDLER INSTALLATION MANUAL

Wiring Schematics

SAH Air Handler Control Option A Schematic
Thermostat
R
C
Y1
Y2
W
O
G
L1
Notes:
1 – To operate in 208V mode replace the blue transformer
wire connected to PB-L2 with red transformer wire.
2 – Low voltage wiring CLASS 2.
208-230/60/1
L1 L2
Transformer L1
Black
24V
Red NOTE 1
Blue
Yellow
Blk/Wh
Grn/Yel
TB
R
C
Y1
Y2
W1
O
G
L
S
X1
X2
G
PB
L2
Black
C
1
2
3
4
5
Red
Blue
Grey
Tan
Legend
Factory Low voltage wiring
Factory Line voltage wiring
Field low voltage wiring
Field line voltage wiring
Optional block
DC Voltage PCB traces
Internal junction
Quick connect terminal
TS Thermal Limit Switch
P
Field wire lug
L1
Ground
N.O., N.C.
ER1 to ER4 - Aux heat stage relays
16
Air Handler No Electric Heat
Orange
Brown
5 Speed
ECM
Blower
Motor
L N G
G Light emitting diode - Green
208-230V Relay coil
EHC
EHC Electric Heat Contactor
1 2 3
Polarized connector
PB - Power block
HE - Heater element
Breaker
97P901-01