York MA - Page 14

253462-BTG-N-1010
14 Johnson Controls Unitary Products
CONTROL WIRING
* Optional dehumidification humidistat switch contacts open on rise.
** Maybe required.
Note: Not applicable to 115 volt models.
1. “Y” Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement.
2. Move HUM STAT Jumper on AH Control Board to YES position if Humidistat is used.
3. MODE Jumper on AH control board should be set to HP for heat pumps.
4. To change quantity of heat during HP defrost cycle - Reverse connections at W1 & W2 on Air Handler Control Board.
TYPICAL APPLICATIONS WITH MC MULTI-POSITION COILS
THERMOSTAT
AIR HANDLER
BOARD
HEAT PUMP
R
R
R
G
G
Y
W/W1
O
W
O
O
C
X/L
X/L
C
Y/Y2
Y1
Y
W1 66
W2
W1
HUM
COM
HUMIDISTAT
*
W2
E
X/L
And Newer UPG Single Stage HP Systems
CONTROL WIRING - Air Handler
Single Stage H/P with Standard Demand Defrost Control Board
**
UPFLOW
DOWNFLOW
HORIZONTAL RIGHT
HORIZONTAL LEFT