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Installation (contd.)
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 Tables 12. and 13.
Air supply requirements below apply to all
MiniMax heaters
All opening sizes are minimum and unobstructed.
A
i A
f r
r o
C
M
o
d
l e
S
1
5
0
1
2
0
0
2
2
5
0
2
3
0
0
3
3
5
0
3
4
0
0
4
Table 12.
A
i A
f r
r o
C
M
o
d
l e
S
1
5
0
2
0
0
2
5
0
3
0
0
3
5
0
4
0
0
1
Table 13.
INSTALLATION 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 a Non-combustible Base Kit for use on
combustible floors.
b) Construct a non-combustible base from masonry
blocks as illustrated, see Figure 17.
P/N 472128
NOTE
l l
A
r i
F
o r
m
n I
s
d i
e
o
m
b
s u
o i t
n
A
r i
V
e
t n
a l i
o i t
n
q
I .
. n
S
q
I .
. n
5
0
1
5
0
0
0
2
0
0
5
0
2
5
0
0
0
3
0
0
5
0
3
5
0
0
0
4
0
0
l l
A
r i
F
o r
m
O
u
s t
d i
e
o
m
b
s u
o i t
n
A
r i
V
e
t n
a l i
o i t
n
q
I .
. n
S
q
I .
. n
3
7
3
7
5
0
5
0
6
3
6
3
7
7
7
7
9
0
9
0
0
0
1
0
0
BASE FOR USE ON
COMBUSTIBLE FLOORS
SHEET
METAL
BLOCKS
Figure 17.
CAUTION
Chemicals should not be stored near the heater
installation. Combustion air can be contaminated by
corrosive chemical fumes which can void the warranty.
STACK TYPE INDOOR DRAFT HOOD KIT
The proper draft hood and adapter must be installed on
the heater as shown below:
M
o
d
l e
D
a r
t f
H
o
o
d
1
5
0
D
H
1
5
2
0
0
D
H
2
0
2
5
0
D
H
2
5
3
0
0
D
H
3
0
3
5
0
D
H
3
5
4
0
0
D
H
4
0
Table 14.
INDOOR DRAFT HOOD INSTALLATION
1. Take out the louvered outer top piece after first
removing the sheet metal screws, attaching it to
the cabinet.
2. Install the adaptor
(vent kit).
3. Install the top cover
(vent kit).
4. Install the draft hood
(vent kit).
Use the provided screws
to secure the vent
assembly.
16
TM
HOLLOW MASONARY BLOCKS, NOT LESS THAN
4" THICK (LAID WITH ENDS UNSEALED AND JOINTS
MATCHED FOR AIR CIRCULATION). COVER BLOCKS
WITH 24 GA. (MIN.) GALVANIZED SHEET METAL.
P
o r
d
u
t c
N
. o
V
e
t n
i D
. a
4
6
0
2
2
7
6
. n i
4
6
0
2
2
8
7
. n i
4
6
0
2
3
0
7
. n i
4
6
0
2
3
1
8
. n i
4
6
0
2
3
3
9
. n i
4
6
0
2
3
4
1
0
. n i
Draft Hood
Top Cover
Adaptor
HEATER
Figure 18.
Rev. C 1-22-04
Screw
(2 PLC's)
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