a separate regulator must be installed ahead of the heater. Refer to Figure 2 for maximum allowable pres- sure for stated model and gas.
See heater rating plate for minimum gas supply pres- sure “For the Purpose of Input Adjustment”
On a multiple heater installation it may be possible to use one large capacity regulator or an individual regula- tor for each heater. Nevertheless, it is recommended practice to make the entire pipe system a loop. Contact your local representative or the factory for proper gas pressure reducing design stage.
WARNING: DO NOT EXCEED ½ P.S.I. INLET PRES- SURE TO HEATERS SHOWN IN FIGURES 1 AND 2
6. ELECTRICAL
All external wiring must be in accordance with the existing electrical code. Use wiring diagram furnished with heater. Be sure electric supply characteristics match those called for on the name plate. The unit must be electrically grounded in accordance with the National Electrical Code, ANSI/NFPA70, latest revision. In Canada refer to Canadian electrical code CSA C22.1
7. THERMOSTAT & LOCATION
Make sure that the electrical characteristics of the thermostat match those of the heater controls. For best results thermostat should be positioned 5 ft. above floor where air can circulate freely around it. DO NOT MOUNT directly to
8.VENTILATION
a.The minimum intake and exhaust air openings shall pro- vide for not less than 400 CFM for every 100,000 BTU input except that the infiltration area may be included in the intake area. The exhaust fan must be interlocked with the heater thermostat. If a power exhaust fan
is used, it should be controlled by the thermostat or humidistat
Figure 2
b.Where natural (gravity) ventilation is provided for exhaust, the openings must be distributed above the heaters (preferably at the peak of the roof) and the areas of openings shall not be less than 300 square inches for every 100,000 BTU input.
9. OPERATIONS
Upon completion of electrical wiring, gas piping and purging of gas lines to heaters, refer to the lighting instruction plate attached to heater for proper lighting procedure.
10. CLEANING INFORMATION
Blow out Venturi and burner face with compressed air (25# max. pressure); also clean orifices (see Figure 2 for correct size drill). For detailed maintenance and cleaning instructions contact your local representative or factory.
WARNING: GASKET BINDER MATERIAL USED IN THIS HEATER ASSEMBLY WILL TEMPORARILY EMIT AN ODOR AND/OR VAPOR. USE VENTILATION (a OR
b)AND THIS CONDITION WILL CLEAR UP IN APPROXI- MATELY 20 MINUTES AND WILL NOT REOCCUR.
WARNING: DO NOT ATTEMPT TO IGNITE THE PILOT BY HAND ON HEATERS EQUIPPED WITH AUTO- MATIC spark ignition.
WARNING: THE STATE OF CALIFORNIA REQUIRES THE FOLLOWING WARNING: COMBUSTION
NOTE: USE LATEST EDITION FOR ALL ANSI STAN- DARD AND CANADIAN STANDARDS.
MODEL | BTU/HR. RATING |
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GAS |
| MIN. |
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| MANIFOLD | |||||||
NO. |
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| NATURAL | PROPANE | NAT. |
| L.P. |
| NAT. |
| L.P. |
| NAT. | L.P. | NAT. | L.P. |
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4030 | 30,000 | 30,000 | 6.6” |
| 11” |
| 14” |
| 14” |
| 5.6” | 10” | 43 | 52 |
4040 | 40,000 | 40,000 | 6.8” |
| 11” |
| 14” |
| 14” |
| 5.8” | 10” | 37 | 49 |
8050 | 50,000 | 50,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 4.3” | 10” | 30 | 45 |
8060 | 60,000 | 60,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 5.8” | 10” | 29 | 43 |
8070 | 70,000 | – | 7.0” |
| – |
| 14” |
| – |
| 6.0” | – | 28 | – |
9080 | 80,000 | 80,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 5.8” | 10” | 37 | 49 |
9090 | 90,000 | 90,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 5.0” | 10” | 32 | 47 |
9100S | 100,000 | 100,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 5.0” | 10” | 31 | 46 |
9100 | 100,000 | 100,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 4.3” | 10” | 30 | 45 |
9120 | 120,000 | 120,000 | 7.0” |
| 11” |
| 14” |
| 14” |
| 5.8” | 10” | 29 | 43 |
9140 | 140,000 | – | 7.0” |
| – |
| 14” |
| – |
| 5.5” | – | 28 | – |
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Enerco Group, Inc. | 4 | Operating Instructions and Owner’s Manual |
