Information For Propane Gas Floor Models Only; Table 4 Gas Supply Pressures; Table 5 Maximum Continuous Flow In Btu/Hr. At Various - Space-Ray RFPA10C-N6 Installation & Operation Instructions

GAS TYPE MANIFOLD PRESSURE
Natural
Propane
*Minimum permissible gas supply pressure for purpose of input adjustment.
SECTION 7: INFORMATION FOR PROPANE GAS FLOOR MODEL HEATERS ONLY
Heaters used with PROPANE gas must be installed in accordance with the
latest edition of the National Fuel Gas Code NFPA54, Standard for the Storage and Handling of PROPANE Gas -
NFPA 58, all state and local codes or the authority having jurisdiction. See Section 7.1 "PROPANE models only -
Regulator and hose assembly instructions" on page 7 for specific PROPANE connection information.
RFPA10C Installation and Operation Instructions
The heater must be connected to the tank or cylinder by a UL Listed hose assembly or hard
piping. A 15 foot assembly of UL Listed hose is available with each heater from Space-Ray under Part No.
30522020. A PROPANE cylinder kit Part No. 30524000 containing a single stage PROPANE gas regulator
(operation range: 10 to 150 PSIG inlet and 11.0" W.C. outlet) having a POL fitting with an excess flow valve
is included with each hose assembly is also available from Space-Ray.
The hose assembly must be visually inspected prior to each use of the heater. If it is evident there is
excessive abrasion or wear, or the hose is cut, it must be replaced prior to the heater being
put into operation. The replacement hose must be a UL Listed hose assembly.
The volume of a given quantity of liquid PROPANE gas in a container is directly related to its temperature. As a
result, the vaporization rate of a tank or cylinder will decrease as the temperature drops and
as the percentage of liquid in the container becomes smaller. Table 5 on page
6 shows the approximate vaporization rate of a 100 lb. cylinder.
Table 5: Maximum Continuous Flow in BTU/Hr. At Various Temperatures (Degrees F)
Lbs. of Propane in
Cylinder
100
80
60
40
30
** Rate of vaporization drops below the heater input rate.
WARNING: Due to the continuous length of time
the heater might be in operation, a 100lb. PROPANE gas cylinder may
not be sufficient in size. Manifolding several cylinders together is a practical way of increasing the time of
operation of these heaters. Operation of the heater with insufficient sized cylinders or when the liquid level
becomes too low will result in poor heater performance and can cause sooting. Consult your
PROPANE gas dealer for proper sizing of container.
Always turn the gas off at the tank or cylinderwhen the heateris not in use. When in operation, keep the heater a
safe distance from the PROPANE gas container and combustible materials as indicated on the
Form 41357040
May 2021
Table 4: Gas supply pressures
MINIMUM*
3.5" W.C.
10" W.C.
20 F
o
167,000 214,000
137,000 180,000
109,000 140,000
** 105,000
**
MAXIMUM
5" W.C. 14" W.C.
11" W.C. 14" W.C.
40 F 60
o
277,000
214,000
176,000
131,000
** 107,000
6
F 70 F
o o
300,000
236,000
197,000
141,000
118,000