Desa Btu - Manual (Page 4)

www.desatech.com 113325-01C 4
Figure 2 - Connecting Heater to Propane
Tank
Propane
Tank
Propane Supply
Valve
Regulator
Hose
POL
Fitting
Inlet
Connector
Hose
Figure 3 - Hose and Inlet Connector,
Automatic Control Valve Button and
Piezo Ignitor Button Locations
Piezo
Ignitor
Automatic Control
Valve Button
PROPANE SUPPLY
Propane gas and propane tank(s) are to be fur-
nished 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. 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.
OPERATION
WARNING: Review and under-
stand the warnings in the Safety
Information section, page 2. They
are needed to safely operate this
heater. Follow all local codes when
using this heater.
TO START HEATER
1. Follow all installation, ventilation, and safety
information.
2. Locate heater on stable and level surface. Make
sure strong drafts do not blow on heater.
3. Open propane supply valve on propane tank(s)
slowly.
4. Turn the heater regulator knob clockwise to
the “HI” position.