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Rev. A 1-2-02 P/N 472032
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Installation (Indoor)
NOTE
The heater requires two uninterrupted air supply
openings; one for ventilation and one to supply
oxygen for proper gas combustion. The air supply
openings should be sized according to Table 2.
Air supply requirements below apply to all
MiniMax NT Standard heaters*.
CAUTION
Chemicals should not be stored near the heater
installation. Combustion air can be contaminated by
corrosive chemical fumes which can void the warranty.
*NOTE
The openings listed in Table 2. are free open vent
area—if the vents incorporate restrictive louvers,
the vent openings must be increased to
compensate for the area blocked by the louvers (or
grills).
b) Construct a non-combustible base from masonry
blocks as illustrated, see Figure 14.
I
NSTALLATION ON FLOORS CONSTRUCTED
OF COMBUSTIBLE MATERIALS
The heater may be placed on a “combustible floor”
using either of the two methods listed below:
a) Use Listed Factory Non-combustible Base Kit
for use on combustible floors.
INDOOR VENT ADAPTORS
(FITS ALL MODELS)
The proper draft hood and adapter must be installed on
the heater as shown below and on pages 13 and 14:
BASE FOR USE ON COMBUSTIBLE FLOORS
24 GA. (MIN.) GALVANIZED SHEET METAL.
FOR AIR CIRCULATION). COVER BLOCKS WITH
(LAID WITH ENDS UNSEALED AND JOINTS MATCHED
HOLLOW MASONARY BLOCKS, NOT LESS THAN 4" THICK
SHEET METAL
BLOCKS
6" M
in
.
6
" M
in
.
Figure 14.
Indoor Vent
Adaptor
Table 2.