43
TB1
TR2
TR1
B
W
Y
G
RD
FUSED 24 VOLT
TRANSFORMER
TO
ADDITIONAL
ZONES
SYSTEM
CONTROLLER
Y W1
W2
TO BASE BOARD
CONTACTOR
*
*
*
DAMPER
RELAY
BOARD
NOTE:
FACTORY WIRED.
W
Y
R
C
R
C
M
C
R
O
W2
B
W
Y
G
R
d
W2
R
C
THERMOSTAT
1 STAGE COOL
2 STAGE HEAT
(101DIGITS)
CENTRAL & AUXILIARY
BASE BOARD HEAT WIRING
H
V
A
C
U
N
I
T
SPDT, 24V
AC Relay
C
G
R
System Controller (101ASSB)
Switching Center (SYGE)
R
G
W
4
2
5
1
3
BLOWER FAN RELAY
If the heater does not turn on the indoor blower fan when heat is on, you
must add a blower fan relay as shown below. The relay will energize the
fan signal “G” when the heat signal “W” is energized.
The Blower Fan Mode (AUTO/ON) is usually selected at
the System Controller/Switching Center. If preferred, the
Fan Mode can be selected at one zone thermostat using
this diagram. The thermostat needs to have a fan switch.
ZONE THERMOSTAT
(SADIGI)
(101PROG)
RELAY
DAMPER
RELAY
BOARD
Note: Leave the fan switch in the "AUTO" position at the Switching Center or System Controller.
AC UNIT
G
R
Auto
On
R
W
Y
G
G
SWITCHING CENTER
OR
SYSTEM CONTROLLER
TB2
W
Y
R
C
W
2
B
W
Y
G
R
d
TB1
W
2
101ASSB
& SYGE
Y
ECONOMIZER
101CAPGE OR
TRLAT ONLY
ENTHALPY
CONTROL
W
Y
Y
COMPRESSOR
101AACB-HP
Y1
COMPRESSOR
#1
ECONOMIZER
ENTHALPY
CONTROL
Y2
COMPRESSOR
#2
Y
Y
SYHPA
Y
ECONOMIZER
SYCAP
ENTHALPY
CONTROL
COMPRESSOR
ECONOMIZER INTERFACE FOR SWITCHING CENTERS AND SYSTEM CONTROLLERS
NOT UTILIZING THE CAPL-2 OR CAPL-4.
ZONE FAN CONTROL
APPLICATION SCHEMATICS
*
