Mendota GREENBRIAR M-50 Operations Instructions download pdf (Page 54)

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INLET

PRESSURE TAP

MANIFOLD PRESSURE

TAP

LP GAS PRESSURE REQUIREMENTS

Inlet and manifold gas pressure checking taps are located on gas valve. A qualified installer shall take pressure

surements at these ports to verify and set the correct gas pressures during the LP Kit installation.

Manifold pressure must

be taken at the “MANIFOLD PRESSURE" tap and inlet pressure at the

"INLET PRESSURE" tap

with the burner operating by a qualified installer.

DESIRED

INLET

PRESSURE

MINIMUM

INLET

PRESSURE

MAXIMUM

INLET

PRESSURE

MANIFOLD

OUTLET

PRESSURE

AIR SHUTTER

POSITION

L.P. GAS 11.0" W.C.

(2.75 kPa)

11" W.C.

(2.75 kPa)

13.0" W.C.

(3.24 kPa)

10.0" W.C.

(2.5 kPa)

1/4" OPEN MIN.

(5 mm)

TURN GAS VALVE HI-LO KNOB TO "HIGH" POSITION. OUTLET GAS PRESSURES MAY VARY PLUS OR MINUS 5%.

LPG PROPER INPUT RATES:

With the proper orifices installed, as specified above, this fireplace utilizing LP Gas will have a maximum input rate of

50,000 Btu/Hr.

LEAK TESTING REQUIREMENTS

Prior to completing the conversion process , check for gas leaks

with soap and water solution at all plumbing joints prior to plac-

ing this appliance into operation. It is recommended that all

gas-plumbing joints, factory installed and field installed are

checked for leaks.

PILOT FLAME AND MAIN BURNER RELATIONSHIP

VERIFICATION

Prior to completing the conversion process, the qualified ser-

vice technician must, light the pilot light and verify the relation-

ship between the pilot light flames and the main burners. The

pilot light flames directed towards the propagation ports on the

rear and front burner must overlap the propagation ports on the

burners. The pilot light flames must be a minimum of ¾” long and must overlap the propagation ports on both the rear and

front burners as shown in

Figure 41. Verify that the burner tubes ignite quickly and the burner flames propagate smoothly

along the entire length of the burners.

PILOT FLAME LENGTH ADJUSTMENT

If the pilot light flame length is too short or the required minimum thermopile voltage cannot be achieved using the

factory default setting of the pilot light flame length, a qualified installer may adjust the length of the pilot light

flames to meet the two requirements: Minimum Thermopile output voltage shall be 325mV and the pilot light

flames must be long enough to overlap the burner ports as shown in Figure 41.

Figure 40: Pressure Test Port

Figure 41: PILOT FLAMES AND

BURNER PORTS ALIGNMENT

PILOT

FLAME

MUST

OVERLAP

BURNER

PORTS.

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Mendota GREENBRIAR M-50 Operations Instructions Page 54

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