Typical Field Power & Control Wiring - York CSA 48 Technical Manual

COOLING ONLY (24 VOLT THERMOSTAT)
THERMOSTAT 1 UNIT TERMINAL
TERMINALS STRIP TB1
RV R
YC Y1
Y2
GF G
C
1
24 VOLT THERMOSTAT 2TH07701024. TO CONTROL THE ECONOMIZER
ON SECOND STAGE COOLING, USE THE THERMOSTAT 2TH0401224.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
MULTI STAGE
1
THERMOSTAT
TERMINALS
RC
ADD
RH
JUMPER
Y1
Y2
W1
4
W2
G
B
LED 1
NOT
LED 2
USED
COM 4
A1
ADD
JUMPER
A2
TO REMOTE SENSOR
T
T
1 ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE).
SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.
2
3 SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE
ELECTRIC HEATER OR 2 STAGE GAS HEAT.
REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR
4
P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY
OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE
THERMOSTAT SWITCHES TO THE SET-BACK POSITION.
FIGURE 2 - TYPICAL FIELD POWER & CONTROL WIRING
20
TYPICAL POWER WIRING
TYPICAL CONTROL WIRING
24 VOLT
TRANSFORMER
UNIT TERMINAL
STRIP TB1
24 VOLT
TRANSFORMER
R
Y1
2
Y2
W1
3
W2
G
C
X
OCC
2TH040702224 IF USED
COOLING / HEATING (24 VOLT THERMOSTAT)
1
THERMOSTAT
TERMINALS
UNIT TERMINAL
RH
ADD
JUMPER
RC
Y
W
G
1
24 VOLT THERMOSTAT 2ET07701024. TO CONTROL THE ECONOMIZER ON THE SECOND
STAGE COOLING OR TO HAVE AN ELECTRIC HEAT ACCESSORY WITH TWO STAGES OF
HEAT, USE THERMOSTAT 2TH0471024.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
SINGLE STAGE
THERMOSTAT 1
TERMINALS
RH
RC
ADD
Y
JUMPER
W
G
1
ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT
2TH04700224.
254597-YTG-B-0507
STRIP TB1
R
Y1
24 VOLT
TRANSFORMER
Y2
W1
W2
G
C
UNIT TERMINAL
STRIP TB1
R
Y1
W1
G
C
24 VOLT
TRANSFORMER
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