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Installation (Gas Line)
PIPE SIZED FOR LENGTH OF RUN IN EQUIVALENT FEET
M
The use of Flexible Connectors (FLEX) is
CAUTION
Manifold gas pressure for the TSI, Low NOx heater should
NOT exceed 2.0" W.C.
REGULATED MANIFOLD PRESSURE TEST
1. Attach the manometer to the heater jacket.
2. Shut off the main gas valve.
3. Remove 1/8 in. NPT plug on the outlet side of the
valve and screw in the fitting from the manometer kit.
See
Figure
11.
4. Connect the manometer hose to the fitting.
5. Turn on the heater.
6. The manometer must read 2 in. WC for natural gas,
while operating.
7. For adjustment, remove the Regulator Adjustment
Cap and using a screwdriver turn the screw clock-
wise to increase - counterclockwise to decrease gas
pressure.
Rev. B 1-22-04
P
P I
E
S
Z I
N I
G
F
O
R
M
A
I X
M
U
M
E
Q
U
V I
A
N
t a
r u
l a
g
s a
t a
/ 3
" 4
O
D
E
L
N
A
T
2
0
0
3
0
2
5
0
2
0
3
0
0
1
0
4
0
0
-
NOT
G
A
S
L
N I
E
C
O
N
N
L
E
N
T
P
P I
E
L
E
N
G
1
0
0
0
B
. T .
. U
p
r e
C
u
b
c i
" 1
- 1
/ 1
" 4
- 1
N
A
T
N
A
T
N
1
2
5
4
5
0
7
0
2
5
0
6
5
0
2
0
0
4
2
0
1
0
0
2
CAUTION
recommended as they cause high gas pressure drops.
1/8" NPT Plug
(Inlet Press)
Figure 11.
MINIMAX NT/TSI LOW NOx GAS PRESSURE REQUIREMENTS*
Maximum inlet gas pressure
Minimum inlet gas pressure
Normal manifold pressure
*All Readings are taken with the heater fired. Any adjustments
or readings made with heater off will give incorrect readings.
Table 1.
E
C
T
O I
N
S
F (
e
e
) t
T
H
F
o
t o
/ 1
" 2
" 2
A
T
N
A
T
-
-
0
0
-
0
0
-
0
0
4
0
0
Regulator Adjustment Cap
ON
OFF
1/8" NPT Plug
(Manifold Press)
17
Natural
10 in. WC
4 in. WC
2 in. WC
P/N 472235
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