Form I-RA/D 140/235 (Version A), Mfg No. 110318 Rev 4, Page 9
High Altitude Installation
Standard Model RA/RAD 140 and 235 used-oil-fired heaters are
designed for use from sea level up to elevations of 3,000 ft. Without
proper modifications severe overheating of the combustion chamber
and heat exchanger will occur if installed above 3,000 ft. Also, the on-
board air compressor will not deliver the correct amount of atomizing
air to the fuel nozzle, resulting in poor combustion. Factory-built high
altitude heaters are identified with the suffix “H” (i.e. RA-235-H).
WARNING: Standard model used oil units installed
above 3,000 ft (914M) elevation will overheat, dam
-
aging the heat exchanger assembly. Use of standard
model heater above 5,000 ft (1514M) elevation may
result in incomplete combustion and formation of
carbon monoxide (CO). Elevations above 3,000 ft
(914M) elevation require installation of a heater
that is either factory-built or field converted for
use at high elevation. Failure to comply can result
in severe personal injury or death and/or property
damage and will void the warranty.
Check the rating plate for the approved elevations.
High Altitude
Installation
If the heater is being installed above 3,000 ft, it must either be factory
built (Model 235-H) for that elevation or be changed in the field.
The high altitude conversion affects both the remote pump and the
heater. Install the high altitude kit prior to pump and heater installa-
tion.
Models RA/RAD140
Elevation
Fuel Input
Heat Input
Heat Output
GPH
LPH
BTUH
kw
BTUH
kw
0-3,000 ft
1.0
4.5
140,000
41.0 112.000 32.8
>3,000
- 7,000 ft
0.8
3.6
112,000
32.8
89,600
26.1
Models RA/RAD235
Elevation
Fuel Input
Heat Input
Heat Output
GPH
LPH
BTUH
kw
BTUH
kw
0-3,000 ft
1.7
7.7
238,000
69.7
190,400
55.8
>3,000
- 7,000 ft
1.45
6.6
203,000
59.4
162,400
47.6
>7,000 ft
1.24
5.6
173,600
50.8 138,880 40.7
