Desa 375-F - Manual (Page 5)

www.desatech.com 116699-01B 5
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
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. Provide propane/LP supply system (see Pro-
pane/LP Supply, page 4).
2. Connect POL fitting on hose/regulator assem-
bly to propane/LP tank(s). Turn POL fitting
counterclockwise into threads on tank. Tighten
firmly using a wrench. IMPORTANT: Tighten
regulator with black adjustment knob point-
ing down. Pointing adjustment knob down
protects regulator from weather damage.
3. Connect hose to inlet connector. Tighten firmly
using a wrench.
IMPORTANT: Extra hose or piping may
be used if needed. Install extra hose or pip-
ing between hose/regulator assembly and
propane/LP tank. You must use the regulator
supplied with the heater.
4. Open propane/LP supply valve on propane/LP
tank(s) slowly. Note: If not opened slowly, ex-
cess-flow check valve on propane/LP tank will
stop gas flow. If this happens, you may hear a
click inside the regulator assembly. To reset
the excess flow check valve, close propane/LP
supply valve and open again slowly.
OPERATION
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.
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 into front
or rear of heater.
3. Plug power cord of heater into a three-prong,
grounded extension cord. Extension cord must
be at least six feet long. Extension cord must
be UL listed.
Extension Cord Size Requirement
Up to 50 feet (15 m) long, use 18 AWG
rated cord.
51 to 100 feet (15.5 to 30.5 m) long, use 16
AWG rated cord.
101 to 200 feet (30.78 to 61 m) long, use 14
AWG rated cord.
4. Plug extension cord into a 120 volt/60 hertz,
three-hole, grounded outlet.
Propane/LP
Tank
Supply
Valve
Hose
POL Fitting
Regulator
Adjustment Knob
(pointing down)
Figure 3 - Regulator With Adjustment
Knob Pointing Down
Figure 4 - Hose and Inlet Connector
Hose
Inlet Connector
5. Adjust regulator between 7 and 20 psig. Note:
Higher regulator setting will allow heater to
produce more heat.
6. Check all connections for leaks.
7. Close propane/LP supply valve.
WARNING: Do not adjust
regulator below 7 psig or above
20 psig. Heater may not run
properly.