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STEAM HUMIDIFIER
HUMIDISTAT
TERMINALS
TO SYSTEM FAN
3
FAN
WIRING
2
1
6
L1
24
(HOT)
VAC
L2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
24V WIRING.
3
REFER TO THE STEAM HUMIDIFIER INSTALLATION
INSTRUCTIONS TO WIRE SYSTEM FAN.
4
CUT JUMPER FOR STEAM HUMIDIFIER CONTROL.
5
FAN TERMINALS G AND CG NOT USED IN THIS APPLICATION.
6
EXTERNAL TRANSFORMER NOT PROVIDED.
7
IF OUTDOOR TEMPERATURE SENSOR IS NOT USED, WIRE HEAT
TERMINALS W AND CW TO FURNACE.
8
IF USING OUTDOOR TEMPERATURE SENSOR, REMOVE FACTORY
INSTALLED JUMPER.
DRUM HUMIDIFIER
DRUM
MOTOR
2
1
BLACK
L1
(HOT)
WHITE
L2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
24V WIRING.
3
TO PROVIDE HUMIDITY IN FAN MODE, CONNECT G AND CG
TERMINALS TO FAN RELAY.
4
IN TWO TRANSFORMER SYSTEMS, REMOVE CW/CG FACTORY
INSTALLED JUMPER.
5
IF USING OUTDOOR TEMPERATURE SENSOR, REMOVE FACTORY
INSTALLED JUMPER.
6
ISOLATED RELAY CONTACTS.
14
12
13
DEHUM
DEHUM
HUM
9
HUM
HOT
COM
24 VAC
11
AUTOMATIC HUMIDITY CONTROL
Fig. 7. Wiring for steam humidifiers.
11
9
10
DEHUM
6
DEHUM
HUM
6
BLACK
HUM
HOT
COM
OFF
24 VAC
8
AUTOMATIC HUMIDITY CONTROL
Fig. 8. Wiring for drum style humidifiers.
H1008A,D AUTOMATIC HUMIDITY CONTROL
4
OUT
8
9
OUT
G
5
CG
CW
W
OFF
TEST
ISOLATED RELAY CONTACTS.
9
10
HEAT ONLY APPLICATION SHOWN. SIMILAR WIRING REQUIRED IN HEAT
AND COOL SYSTEM WITH ONE OR TWO TRANSFORMERS. WHEN HEAT
AND FAN OPERATE SIMULTANEOUSLY WITH ONE RELAY, JUMP W TO G
AND JUMP CG TO CW.
11
POWER SHOULD BE APPLIED TO THIS CONTROL AT ALL TIMES. DO NOT
USE FAN BOARD HUMIDISTAT CONTACTS OR CURRENT SENSING RELAY.
12
CUT JUMPER FOR DEHUMIDIFIER APPLICATION. (DO NOT CUT FOR
VENTILATION SYSTEM.)
DEHUM TERMINALS SWITCH LOW VOLTAGE DEHUMIDIFIERS, HEAT/ENERGY
13
RECOVERY UNITS OR EXTERNAL CONTACTORS THAT SWITCH HIGH
VOLTAGE DEHUMIDIFIERS.
14
JUMPER AND DEHUM TERMINALS NOT PRESENT ON H1008A MODEL.
OPTIONAL
OUTDOOR
AIR SENSOR
OUT
5
OUT
G
CG
4
CW
W
TEST
HEAT ONLY APPLICATION SHOWN. SIMILAR WIRING REQUIRED IN HEAT
7
AND COOL SYSTEM WITH ONE OR TWO TRANSFORMERS. WHEN HEAT
AND FAN OPERATE SIMULTANEOUSLY WITH ONE RELAY, JUMP W TO G
AND JUMP CG TO CW.
8
POWER SHOULD BE APPLIED TO THIS CONTROL AT ALL TIMES. DO NOT
USE FAN BOARD HUMIDISTAT CONTACTS OR CURRENT SENSING RELAY.
9
CUT JUMPER FOR DEHUMIDIFIER APPLICATION. (DO NOT CUT FOR
VENTILATION SYSTEM.)
10
DEHUM TERMINALS SWITCH LOW VOLTAGE DEHUMIDIFIERS, HEAT/ENERGY
RECOVERY UNITS OR EXTERNAL CONTACTORS THAT SWITCH HIGH
VOLTAGE DEHUMIDIFIERS.
11
JUMPER AND DEHUM TERMINALS NOT PRESENT ON H1008A MODEL.
5
7
OPTIONAL
OUTDOOR
AIR SENSOR
ROOM THERMOSTAT
G
W
R
FURNACE
TRANSFORMER
FROST
HEAT
FACTOR
RELAY
SETPOINT
DIAL
ROOM THERMOSTAT
G
W
R
7
3
FAN
RELAY
FURNACE
TRANSFORMER
FROST
HEAT
FACTOR
RELAY
SETPOINT
DIAL
10
L1
(HOT)
L2
1
M13298
L1
(HOT)
L2
1
M13297
69-1185EF-3
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