DESIGN RELATED SAFETY FEATURES
1) FLAME FAILURE
The electronic safeguard control shuts off the gas supply in .8 seconds if flame is lost to
prevent raw gas from leaving the heater.
2) OVERHEATING
The totally enclosed motor is protected by thermal overload. A high temperature limit switch
is mounted in the control box.
3) COMPLETE VISUAL/SELF DIAGNOSIS LIGHTS
4) BLOCKED AIR SUPPLY
An airflow switch detects the differential pressure in the combustion chamber and shuts off
the gas flow when airflow is insufficient.
5) LOCKING GAS SELECTOR LEVER
To avoid over firing of the heater and damage to property, make sure the lever is locked in
position when using propane.
6) LOW SHELL TEMPERATURE
The Model 950HS is designed with a burner heat shield to keep the outside shell cool for
added safety in the work place.
7) DURABLE CONSTRUCTION
The Model 950HS uses a heavy gauge steel housing and a stainless steel burner for long life
and consistent performance.
NOTE: In order to maintain the highly efficient combustion of the heater, the combustion cham-
ber must remain as manufactured. Any change or distortion could alter the fuel/air mixture and
create excessive products of combustion.
SPECIFICATIONS
Model No. 950H & 950HL
Designed to ANSI Z83.7-1993 Standard Construction Heater
Gases:
Natural or Propane
Capacity:
950,000 Btu/h maximum, 650,000 Btu/h minimum
Orifice Size:
32 DMS (x17)
Blower:
7,000 CFM
Electrical Rating:
120V 60Hz 15 amps, single phase
Minimum Temperature Rating:
Minus 20 degrees F
Gas Supply: Inlet Pressure
Hi Fire
Lo Fire
Max PSI
Min PSI
W.C.
W.C.
Propane
10
1
8.6”
1.4”
Natural Gas
10
3
2.8”
1.4”
Note: Min. Inlet pressure of 9”W.C. can be achieved by removing the 11SV08 Regulator(see page 13, item #4).
Inlet Connection:
Maximum Duct Length Straight:
100 ft @ 22” diameter
Model 950HL
1/4” FNPT
SP 1” @ 5000 CFM
Model 950H
1-1/4” FNPT
Weight (approximate):
360 lbs.
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