Owner's Manual GAS-FIRED INFRARED CONSTRUCTION HEATER 125-R, 125-RN

www.desatech.com
114248-01A
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7. Keep appliance area clear and free from com-
bustible materials, gasoline, paint thinner and
other flammable vapors and liquids. Dust is
combustible. Do not use heater in areas with
high dust content.
8. Minimum heater clearances from com-
bustibles:
Sides Top
1.54 m (5 ft) 1.22 m (4 ft)
9. Keep heater at least 6.0 m (20 ft) from propane
tank(s).
10. Keep propane tank(s) below 38° C (100° F).
11. Check heater for damage before each use. Do
not use a damaged heater.
12. Check hose before each use of heater. If highly
worn or cut, replace with hose specified by the
manufacturer before using heater.
13. Locate heater on stable and level surface if
heater is hot or operating.
14. Not intended for use on finished floors.
15. Never block air inlet (bottom of combustion
chamber) or air outlet (glowing combustion
chamber) of heater.
16. Keep heater away from strong drafts, wind,
water spray, rain or dripping water.
17. Do not leave heater unattended.
18. Keep children and animals away from
heater.
19. Never move, handle or service a hot or operat
-
ing heater. Severe burns may result. Wait 15
minutes after turning heater off.
20. To prevent injury, wear gloves when handling
heater.
21. Never attach duct work to heater.
22. Do not alter heater. Keep heater in its original
state.
23. Do not use heater if altered.
24. Turn off gas supply to heater when not in use .
25. Use only original replacement parts. This
heater must use design-specific parts. Do
not substitute or use generic parts. Improper
replacement parts could cause serious or fatal
injuries.
SAFETY INFORMATION
Continued
Figure 1 - Product Identification
PRODUCT
IDENTIFICATION
UNPACKING
1. Remove all packing items applied to heater for
shipment. Keep plastic cover caps (attached to
valve inlet and hose/regulator assembly) for
storage.
2. Remove all items from carton.
3. Check all items for shipping damage. If heater
is damaged, promptly inform dealer where you
bought heater.
THEORY OF OPERATION
The Fuel System: For propane units, the hose/
regulator assembly attaches to the propane gas
supply. For natural gas units, the gas supply at
-
taches to the heater through user supplied hose or
pipe. This provides fuel to the heater.
The Ignition System: The piezo ignitor lights the
burner fuel supply.
The Automatic Control System: This system causes
the heater to shut down if the flame goes out.
Top
Cover
Lighting
Port
Combustion
Chamber
Control knob
Protective
Screen