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IMPORTANT
For safety, shut unit off and remove manometer as soon
as an accurate reading has been obtained. Take care to
replace pressure tap plug.
Model
Gas
Input Size
Nat
030
LP/Propane
Nat
045
LP/Propane
Nat
070
LP/Propane
Nat
090
LP/Propane
Nat
110
LP/Propane
High Altitude Pressure Switch Kit
Model Input
Size
0-4500 ft
030
045
070
No Change
110
090
110
NOTE - A natural to L.P. propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit instal-
lation instruction for the conversion procedure.
Supply Line and Manifold Pressure Settings at all Altitudes
0 - 2000 ft.
2001 -4500 ft .
3.5
3.2
10.0
10.0
3.5
3.2
10.0
10.0
3.5
3.2
10.0
10.0
3.5
3.2
10.0
10.0
3.5
3.5
10.0
10.0
Pressure Switch and Gas Conversion Kits at all Altitudes
7501 - 10,000
4501-7500 ft
ft
80W52
80W51
80W52
80W51
80W52
80W51
80W52
80W51
80W52
80W51
80W57
80W52
TABLE 13
7501 - 10,000
4501 - 7500 ft.
3.0
10.0
3.0
10.0
2.8
10.0
2.7
9.6
3.0
9.6
TABLE 14
High Altitude
Natuarl Gas
Orifice Kit
7501- 10,000
0-7500 ft
ft
14C90
73W37
Page 31
Line Pressure in. wg.
ft
Min
3.5
4.5
10.0
11.0
3.5
4.5
10.0
11.0
3.5
4.5
10.0
11.0
3.5
4.5
10.0
11.0
3.5
4.5
10.0
11.0
LP/Propane Oricifice Kit
7501-10,000 ft
19D59
19H30
19D58
19H29
Max
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
Natuarl Gas
Orifice Kit
0-7500 ft
N/A
77WO9
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