Desa PROPANE CONSTRUCTION HEATERS Electric Heater User Manual


 
4
102370
100,000 Btu/Hr
PROPANE CONSTRUCTION HEATER
WARNING: Follow the mini-
mum fresh, outside air ventila-
tion requirements. If proper fresh,
outside air ventilation is not pro-
vided, carbon monoxide poison-
ing can occur. Provide proper
fresh, outside air ventilation be-
fore running heater.
Provide a fresh air opening of at least three
square feet for each 100,000 Btu/Hr rating.
Provide extra fresh air if more heaters are
being used.
VENTILATION
Figure 4 - Hose and Inlet Connector
Figure 3 - Regulator With Vent Pointing
Down
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.
1. Provide propane supply system (see
Propane Supply above).
2. Connect fuel gas connector fitting on
hose/regulator assembly to propane
tank(s). Turn counterclockwise into
threads on tank valve. Tighten firmly
using wrench.
IMPORTANT:
Tighten
regulator with vent pointing down.
Pointing vent down protects regulator
from weather damage.
WARNING: Test all gas pip-
ing 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.
PROPANE SUPPLY
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 the Propane Installation Code CAN/
CGA B149.2. Your local library or fire de-
partment will have this booklet.
The amount of propane gas ready for use
from propane tanks varies. Two factors de-
cide 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
pound tanks needed to run this heater.
Temperature(°F) Number of tanks,
at Tank 100,000 Btu/Hr
32° 2
20° 2
10° 3
0° 3
-10° (Use larger tank)
-20° (Use larger tank)
Less gas is vaporized at lower temperatures.
You may need two or more 100 pound tanks
or one larger tank in colder weather. Your
local propane gas dealer will help you select
the proper supply system. The minimum
surrounding air temperature rating for each
heater is -20°F (-29°C).
Hose
Regulator
Vent
(pointing
down)
Fuel Gas
Connector
Supply
Valve
Propane
Tank
Hose
100,000 Btu/Hr
Model Shown
Inlet
Connector
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 piping between hose/regulator
assembly and propane tank. You must
use the regulator supplied with heater.
4. Open propane supply valve on propane
tank(s) slowly.
Note:
If not opened
slowly, excess-flow check valve on
propane tank will stop gas flow. If this
happens, close propane supply valve
and open again slowly.
5. Check all connections for leaks.
6. Close propane supply valve.