10
V E N T - F R E E G A S H E A T E R S E R V I C E M A N U A L
REGULATOR INSTALLATION
GRH/PV 018
Propane Installations
CAUTION: Propane models require an
external regulator (not supplied with heater).
The external regulator must be connected be-
tween the heater and the propane supply tank.
This regulator must reduce the incoming supply
pressure to a maximum of 14" W.C. Under no
circumstances should this heater ever be con-
nected directly to a propane supply tank.
A typical propane installation is shown (below
right) in Figure 9. For details concerning tank or
cylinder location and installation, refer to NFPA
Pamphlet No. 58 and the laws in your locality.
External Regulators - Vents
External regulators should be installed with the
vent pointing down as shown in Figure 9. Some
regulators have a so-called “drip lip” surround-
ing the vents which acts as a shield for the
recessed vent opening. This lip makes it more
difficult for freezing rain or sleet to plug a vent
that has been installed pointing down. Older
style vents may not have the lip and are far less
resistant to freeze-up problems (see Figure 10).
A regulator with the drip lip design installed
outdoors does not require additional protection
if the vent is pointing down, unless subjected to
upward splatter from rain.
Older regulators with the non-drip lip vent con-
struction require additional protection, such as a
hood, cover, encasement, etc. The external
regulator should be installed high enough above
ground level (at least 18 inches) so that rain
splatter does not block or freeze the vent. Extra
protection for the vent may be needed in areas
where there is heavy snow fall.
Be sure the external regulator is installed in
accordance with NFPA No. 58 and any other
applicable local regulations, as well as the
manufacturer’s instructions.
DRIP LIP
GRH/P 026
Figure 9. Typical Propane Installation
Drip Lip
No Drip Lip
Figure 10. Regulator Vent Drip Lips
3 FT
MIN
3 FT
MIN
3 FT
MIN
CYLINDER LOCATION
GRH/PV 016
Supply
Tank
Regulator
!
WARNING ICON
G 001
Manual Shutoff Valve
With 1/8" NPT Tap
