User's Manual

www.desatech.com
119143-01A 5
PROPANE SUPPLy
Propane/LP gas and propane/LP tank(s) are
to be furnished by the user.
Use this heater only with a propane/LP vapor
withdrawal supply system. See Chapter 5
of the Standard for Storage and Handling
of Liqueed Petroleum Gas, ANSI/NFPA 58
and the Natural Gas and Propane Installation
Code CSA B149.1. Your local library or re
department will have these booklets.
The amount of propane/LP gas ready for use
from propane/LP tanks varies. Two factors
decide this amount:
1. The amount of propane gas in tank(s)
2. The temperature of tank(s)
The chart below shows the number of 100 lb
(45 kg) tanks needed to run this heater.
Number of tanks
Temperature Models
    
above 20° F (-7° C) 1 1 2
20° F (-7° C) to -0 (-18° C) 1 2 3
Less gas is vaporized at lower temperatures.
You may need a larger tank in colder weather.
Your local propane/LP gas dealer will help you
select the proper supply system.
VENTILATION
WARNING: Follow the mini-
mum fresh, outside air ventila-
   
fresh, outside air ventilation is

poisoning can occur. Provide
proper fresh, outside air ventila-
tion before running heater.
Provide a fresh air opening of at least
three square feet for each 100,000 Btu/Hr
(105,500 k/j) rating. Provide extra fresh air
if more heaters are being used.
INSTALLATION
WARNING: Review and un-
derstand the warnings in the
Safety Information section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.
WARNING: Test all gas piping
and connections for leaks after
installing or servicing. Never use

 
and water to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
1. Provide propane/LP supply system (see
Propane/LP Supply).
2. Connect POL tting on hose/regulator
assembly to propane/LP tank(s). Turn
POL tting counterclockwise into threads
on tank. Tighten rmly using a wrench.
IMPORTANT: Tighten regulator with vent
pointing down. Pointing vent down pro-
tects regulator from weather damage.
3. Connect hose to inlet connector of heater.
Tighten rmly using a wrench.
IMPORTANT: Extra hose or piping may be
used if needed. Install extra hose or piping
between propane/LP tank and regulator.
You must ensure a minimum of 25 psig
at the inlet of the regulator. You must use
the regulator supplied with the heater.
Propane
Tank
Hose
Regulator
Vent (pointing
down)
Fuel Gas
Connector
Supply
Valve
Figure 5 - Regulator With Vent Pointing
Down
To
Heater
Inlet
Connector
POL Fitting