Enviro G42L, Руководство пользователя

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Initial Installation
QUALIFIED INSTALLERS ONLY
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WARNING: ONLY PERSONS LICENSED TO WORK WITH GAS PIPING MAY MAKE NECESSARY
GAS CONNECTIONS TO THIS APPLIANCE.
•
There is a 3/8 NPTM pipe located on the right side of the unit for the gas line connection. In Canada,
consult your local authorities codes or the CAN/CGA B 149 (1 or 2) installation code. In the USA,
gas installations follow either local codes or the current edition of the National Fuel Gas Code ANSI
Z223.1.
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The efficiency rating of this appliance is a total thermal efficiency rating determined under continuous
operating conditions and was determined independently of any installed system.
The appliance and its shutoff valves must be
disconnected from the gas supply piping system
during any pressure testing where the pressure
exceeds ½ PSIG (3.45 KPa) or damage will occur
to the valve.
The appliance must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure testing of the gas
supply piping system at test pressures equal to or
less than ½ psig (3.45 KPa).
Always check for gas leaks with a soap
and water solution after completing the
required pressure test.
TO TEST VALVE PRESSURES
The pressure taps are located on the top right of the valve shown in Figure 58.
•
Turn set screw 1 turn counter clockwise to loosen,
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Place
5
/
16
” (8 mm) I.D. hose over pressure tap system.
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Check pressures using a manometer.
•
When finished, release pressure, remove hose & tighten set screw.
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Manifold
Pressure Tap
Inlet Pressure
Tap
Hi/Low
Knob
Pilot Adjustment
Screw
Gas Control
Knob
Figure 58: Labeled Gas Valve.
Table 8: G42L Pressure and BTU Information
*Gas Valve will be
mounted upside down on
some models
G42L Natural Gas Propane Gas
Main Orifice
Front: #44 Rear: #46 Front: #53 Rear: #56
Manifold Pressure 3.6” W.C. (0.89 KPa) 10.0” W.C. (2.49 KPa)
Min. Manifold Pressure 1.6” W.C. (0.39 KPa) 6.4” W.C. (1.59 KPa)
Max Supply Pressure
7.0” W.C. (1.74 KPa) 11.0” W.C. (2.74KPa)
Min. Supply Pressure 4.5” W.C. (1.12 KPa) 10.4” W.C. (2.59 KPa)
Max BTU/hr Input 42,500 BTU/hr (12.5 kWh) 41,000 BTU/hr (12.0 kWh)
Min. BTU/hr Input 22,500 BTU/hr (6.6 kWh) 21,000 BTU/hr (6.2 kWh)
NEVER USE AN OPEN FLAME FOR LEAK TESTING.