Form I-RA/D 350/500, P/N 131090R12, Page 9
High Altitude Installation
Standard Model RA/RAD 350 and 500 used oil heaters are designed for
use from sea level up to elevations of 3,000 ft (914M). Without proper
modications severe overheating of the combustion chamber and heat
exchanger will occur if installed above 3,000 ft (914M). Also, the onboard
air compressor will not deliver the correct amount of atomizing air to
the fuel nozzle, resulting in poor combustion. Models RA/RAD350 are
available as factory-built high altitude heaters, identied with the sufx
“H” (i.e. RA-350-H). Models RA/RAD500 are not available for elevations
above 3000 ft (914M).
WARNING: Standard model used-oil-red units installed
above 3,000 ft (914M) elevation will overheat, damaging
the heat exchanger assembly. Use of standard model
heater above 5,000 ft (1514M) may result in incomplete
combustion and formation of carbon monoxide (CO).
Elevations above 3,000 ft (914M) require installation of
a heater that is either factory-built or eld 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.
Models RA/RAD350
Elevation
Fuel Input Heat Input Heat Output
GPH LPH BTUH kw BTUH kw
0-3,000 ft 2.5 11.4 350,000 102.6 190,400 55.8
>3,000
- 7,000 ft
2.1 9.5 294,000 86.2 138,880 65.9
Models RA/RAD500
Elevation
Fuel Input Heat Input Heat Output
GPH LPH BTUH kw BTUH kw
0-3,000 ft 3.6 16.4 500,000 146.5 400,000 117.2
If the heater is being installed above 3,000 ft, it must either be factory
built (Model 350-H) for that elevation or be changed in the eld. High
Altitude Conversion Kits including all parts and instructions are available
for Size 350 heaters.
The high altitude conversion affects both the remote pump and the heater.
Install the high altitude kit prior to pump and heater installation.
High Altitude
Installation