507716-01
Page 47 of 58
Issue 1717
High Altitude Information
NOTE:
In Canada, certification for installations at elevations over 4500 feet (1371 m) is the jurisdiction of local authorities.
Units may be installed at altitudes up to 10,000 ft. above sea level. See Table 11 for de-rate manifold values. Units installed
at altitude of 7501 - 10,000 feet require an orifice change. Units installed at altitudes of 4,501 - 10,000 feet (1371 -3048 m)
may require a pressure switch change which can be ordered separately.
Table 12 lists required pressure switch changes and orifice conversion kits at varying altitudes.
The combustion air pressure switches are factory set and require no adjustment.
Table 12.
Burner Orifice Conversion Kits at Varying Altitudes
Capacity
0-7,500 ft
(0-2,286m)
7,501 - 10,000 ft
(2,286 - 3,048 m)
Natural to LP/
Propane
LP/Propane to
Natural
High Altitude
Natural Burner
Orifice Kit
High Altitude LP/
Propane Burner
Orifice Kit
045
11K50+
73W80*
51W01
11K45+
070
090
110
135
* Conversion requires installation of a gas valve regulator spring which is provided with the gas conversion
kit.
+ LP Kits include low line pressure switch.
GUH95C Pressure Switch Requirements at Varying Altitudes
Capacity
0 - 4500 ft
(0 - 1,371m)
4501 - 7500 ft
(1371 - 2286m)
7501 - 10000 ft
(2286 - 3048m)
045
No Change
No Change
11J09
070
No Change
11J12
10U93
090
No Change
11J11
10U93
110
No Change
11J12
10U93
135
No Change
11J11
10U93
Pressure switch is factory set. No adjustment necessary. All models use the factory-installed pressure switch
from 0-4500 feet (0-1371 m).
Содержание GUH95C
Страница 3: ...507716 01 Page 3 of 58 Issue 1717 Figure 1 Parts Arrangement...
Страница 22: ...507716 01 Page 22 of 58 Issue 1717 Figure 25 Figure 26...
Страница 37: ...507716 01 Page 37 of 58 Issue 1717 Figure 59 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC...
Страница 56: ...507716 01 Page 56 of 58 Issue 1717 Start Up Performance Checklist...
