Propane Installation; External Regulators - Desa CERAMIC PLAQUE Service Manual

V E N T - F R E E
Propane Installations
!
CAUTION: Propane models require an
WARNING ICON G 001
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.
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.
10
G A S
3 F T
M IN
CYLINDER LOCATION
Figure 9. Typical Propane Installation
Drip Lip
DRIP LIP
Figure 10. Regulator Vent Drip Lips
H E A T E R S E R V I C E
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.
Supply
Tank
GRH/PV 016
Regulator
REGULATOR INSTALLATION
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.
No Drip Lip
GRH/P 026
M A N U A L
Manual Shutoff Valve
With 1/8" NPT Tap
GRH/PV 018