www.desatech.com
112396-01D
4
PROPANE SUPPLy
VENTILATION
WARNING: Provide at least an 120 square inch (774.2 cm
2
)
opening of fresh, outside air while running heater. If proper fresh,
outside air ventilation is not provided, carbon monoxide poisoning
can occur. Provide proper fresh, outside air ventilation before run-
ning heater.
Propane gas and propane tank(s) are to be
furnished by the user.
Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5
of the
Standard for Storage and Handling of
Liquefied Petroleum Gas, ANSI/NFPA 58
and/
or
CAN/CGA B149.2
. Your local library or fire
department will have this booklet.
The amount of propane gas ready for use
from propane tanks varies. Two factors decide
this amount:
1. The amount of propane gas in tank(s)
2. The temperature of tank(s)
This heater is designed to operate with a
minimum 20 lb (9 kg) tank. You may need
two or more tanks or one larger tank in colder
weather. Use a 100 lb (45 kg) tank for longer
operation or in very cold weather. Less gas is
vaporized at lower temperatures. Your local
propane gas dealer will help you select the
proper supply system.
Temperature
Number of tanks,
at Tank Location
100 lb (45 kg)
above 0° F (-18° C)
1
below 0° F (-18° C)
2
Smaller tanks can be used for limited run
times but it is recommended to use larger
tanks for optimum performance.
INSTALLATION
WARNING: Test all gas piping
and connections for leaks after
installation or servicing. Never
use an open flame to check for
a leak. Apply a mixture of liquid
soap and water to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
1. Wrench tighten the fuel connector nut into
the propane tank valve (see Figure 2).
Turn fuel connector nut counterclockwise
to tighten. Threads are left-handed.
2. Connect hose to inlet connector (see
Figure 3). Tighten firmly using a wrench.
3. Open propane supply valve on propane
tank(s) slowly.
Note: if not opened slowly,
excess-flow check valve on propane tank
may stop gas flow. If this happens, you may
hear a click inside the regulator assembly,
this is the check valve closing. To reset the
excess-flow check valve, close propane
supply valve and open it again slowly.
4. Check all connections for leaks. Apply
mixture of liquid soap and water to gas
joints. Bubbles forming show a leak that
must be corrected.
5. Close propane supply valve.
SPECIFICATIONS
• Rating: High 25,000 Btu/Hr (26.375 Kj/Hr), Low 15,000 Btu/Hr (15.826 Kj/Hr)
• Fuel: Propane Vapor Only
• Fuel Consumption/Hour: Minimum 0.17 gal (0.64 liter), Maximum 0.27 gal (1.02 liter)
Minimum 0.70 lb (0.32 kg), Maximum 1.16 lb (0.53 kg)
• Supply Pressure (To Regulator): Maximum Tank Pressure, Minimum 275.8 kPa (40 psi)
• Regulator Outlet Pressure: High 103.4 kPa (15 psi), Low 34.4 kPa (5 psi)
