Allied A80US2V - Page 30

508155-01Issue 2108Page 30 of 49
Unit
Input
Gas
Orice Size
0 - 7500 ft.
1
Orice Size
7501 ft. -
10,000 ft.
Manifold
Pressure in w.g.
0 - 4500 ft.
Manifold
Pressure in w.g.
4501 - 7500 ft.
Manifold
Pressure in w.g.
7501 - 10,000 ft.
2
Supply Line
Pressure in w.g.
Low
Fire
High
Fire
Low
Fire
High
Fire
Low
Fire
High
Fire
Low
Fire
High
Fire
070
Natural .063 .055 1.7 3.5 1.6 3.4 1.7 3.5 4.5 13.0
LP/propane
3
.034 .032 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
090
Natural .063 .055 1.7 3.5 1.5 3.2 1.7 3.5 4.5 13.0
LP/propane
3
.034 .032 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
110
Natural .063 .055 1.7 3.5 1.5 3.2 1.7 3.5 4.5 13.0
LP/propane
3
.034 .032 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
135
Natural .063 .055 1.7 3.5 1.6 2.8 1.7 3.5 4.5 13.0
LP/propane
3
.034 .032 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
1
This is the only permissible derate for these units.
2
Natural gas high altitude orice kit required.
3
A natural to L.P./propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation instruction for
the conversion procedure.
NOTE: Units may be installed at altitudes up to 4500 ft. above sea level without modications.
Table 20. Manifold and Supply Line Pressure 0 - 10,000 ft.