Indoor Ventilation Kit
Indoor Installation Kit • Therma Grow
7
FIG. 10
Therma Grow ™ 120 Plus and 220 Plus
Wiring the Air Inlet and Exhast Fan
500-26013 SPRING
500-26015 LEVER WITH
SCREW, SPACER,
AND WASHERS
500-26033 AIR PROVING SWITCH
WITH BRACKET, COVER,
AND SCREWS
500-25994 INLET SHUTTER
WITH TRANSITION
500-26034 INLET HOOD
WITH SCREWS
500-25314 SHUTTER MOTOR
500-26012 BRACKET WITH
MOUNTING SCREWS AND NUTS
LEAD "A"
LEAD "A"
BUTT SPLICE
WIRE FROM IGNITION
CONTROL WITH
TERMINAL REMOVED
IND L1 HSI HSIG L2 W PSI FSI GV PSO FSG C
AIR INLET AIR PROVING SWITCH
LEAD "B"
HEATER AIR PROVING SWITCH
EXISTING
WIRING
FROM
CONTROL
BLACK (TO
VENTILATION
MOTORS)
BLACK
RED
BROWN
BLACK
WHITE
GREEN
NEUTRAL
NEUTRAL
115 V
AC
115 V
AC BLACK
WHITE
GREEN
GROUND
GROUND
EXHAUST
F
AN
CONNECTIONS
AIR INLET
SHUTTER
MOT
OR CONNECTIONS
WHITE
WHITE (TO
VENTILATION
MOTORS)
JUNCTION
BOX
