9
INDOOR VENTILATION REQUIREMENTS
This heater requires a properly sized motorized air inlet shutter,
flexible duct, and exhaust fan. All items must be installed when
the heater is located within the greenhouse.
These components, along with specific instructions, are
provided in the indoor ventilation kit, part number 25985.
Air Inlet
Ideally the air inlet shutter should be located as shown in
Fig.4a, 4b, and 4c. However, it may also be installed in any
other location on an end or side wall, especially if water, gas, or
electrical lines create interference See Fig.4d for alternate
locations at end or side walls.
Regardless of air inlet location, the flexible duct (included with
the ventilation kit) 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.
Ensure the motorized air inlet and the heater’s air inlet are
kept free of any blockages.
FIG. 4a Blower Outlet View
FIG. 4c Side View
FIG. 4d Alternate Air Inlet Locations
ENG/BYNAME/JIMI/HD220/HD220-5B
1 1/2 FT MAX.
MOTORIZED AIR INLET
ALIGNED TO AIR INLET
IN BASE OF HEATER
MOTORIZED AIR INLET SHOWN
WITHOUT DUCT ATTACHED FOR CLARITY
OUTSIDE AIR SOURCE
45.7 cm MINIMUM
CUT DUCT TO PROPER LENGTH
NO KINKS OR SAGGING
10 FT. MAXIMUM FROM AIR INLET AT HEATER TO MOTORIZED AIR
INLET SHUTTER, REGARDLESS OF INLET LOCATION. DUCT MUST BE
INSTALLED
END WALL
GROUND
HEATER
AIR DISCHARGE
OUTSIDE AIR
SOURCE
EXTERIOR
INTERIOR
CENTERED
AIR INLET
DUCT WITH COLLAR
CENTERED TO AIR INLET
OF HEATER
FIG. 4b Underside View
61 cm MIN.
END W
ALL
DUCT ATTACHED
TO AIR INLET OF
HEATER, AND CUT TO
PROPER LENGTH. (NO
KINKS OR SAGGING)
45.7 cm MIN.
*
45.7 cm
MIN.
*
* THE MOTORIZED AIR INLET MUST BE INSTALLED A MINIMUM OF 45.7 cm ABOVE THE
GROUND OR TO A HEIGHT NECESSARY TO PREVENT BLOCKAGE FROM OBSTRUCTIONS
(EXAMPLES: SNOW, EXTERIOR PLANT GROWTH, ETC.)
SIDE W
ALL
45.7 cm
MIN.
*
45.7 cm MAX
.
