Indoor Ventilation Kit
Indoor Installation Kit • Therma Grow
www.lbwhite.com
Indoor Installation Kit • Therma Grow
2
A. Air Inlet Location
Ideally the air inlet shutter should be located as
shown in Fig.1A, 1B, and 1C. However, it may
also be installed in any other location on the end
or side wall, especially if water, gas, or electrical
lines create interference. See Fig.1D for alternate
locations at end or side walls.
Regardless of air inlet location, the flexible duct
(included) must be installed. The duct must be cut
to proper length to prevent sagging and kinks from
preventing proper air flow to the heater. Separate
duct installation instructions are provided in the
duct kit.
FIG. 1A Blower Outlet View
HEATER AIR INLET
AIR INLET
TRANSITION
CENTERED
INTERIOR EXTERIOR
1 1/2 FT MAX.
MOTORIZED AIR INLET
ALIGNED TO AIR INLET
IN BASE OF HEATER
1 1/2 FT MAX.
OUTSIDE
AIR SOURCE
FIG. 1B Underside View
FIG. 1C Side View
FIG. 1D Alternate Air Inlet Locations
END WALL
DUCT COLLAR INSTALLED
TO AIR INLET OF HEATER
CLAMP
CLAMP
COLLAR WITH COVER
INSTALLED TO AIR INLET
10 FT MAX. FROM AIR INLET OF HEATER TO AIR INLET
ALTERNATE INLET
LOCATIONS
WALL
MOTORIZED AIR
INLET SHOWN
WITHOUT DUCT
ATTACHED FOR
CLARITY
Air Inlet Size:
Therma Grow™ 120/120 Plus: 13
½ in. x 13 ½ in. Therma Grow™
200/220 Plus: 15 ½ in. x 15 ½ in.
Provide a square and level opening.
Create suitable framing to mount the
inlet to the structure if necessary.
DUCT WITH COLLAR
CENTERED TOAIR
INLET OF HEATER
HEATER
END W
ALL
OUTSIDE AIR
SOURCE
AIR
DISCHARGE
1 1/2 FT
. MINIMUM
DUCT ATTACHED
TO AIR INLET OF
HEATER, AND
CUT TO PROPER
LENGTH. (NO KINKS
OR SAGGING).
GROUND
18 IN.
MIN.*
2 FT. MIN.
OUTSIDE AIR
SOURCE
CENTERED
AIR
INLET
INTERIOR
EXTERIOR
* THE MOTORIZED AIR INLET MUST BE
INSTALLED A MINIMUM OF 18 IN. ABOVE THE
GROUND OR TO A HEIGHT NECESSARY TO
PREVENT BLOCKAGE FROM OBSTRUCTIONS
(EXAMPLES: SNOW, EXTERIOR PLANT
GROWTH, ETC.)
CUT DUCT TO PROPER LENGTH,
NO KINKS OR SAGGING
DUCT MUST BE INSTALLED REGARDLESS OF AIR INLET LOCATION
