Monessen Hearth HDV500NV/PV User Manual

Page 29

56D3048

HDV Series Direct Vent Gas Fireplace

CHeCK GAS PReSSuRe and eleCtRICAl INStAllAtIoN - MIllIVolt

1. Check gas type. The gas supply must be the same as stated

on the appliance’s rating decal. If the gas supply is differ-
ent from the fireplace, StoP! Do not install the appliance.
Contact your dealer immediately.

. To ease installation, a 18" (457 mm) flex line with manual

shut-off valve has been provided with on this appliance.
Install and attach 1/" gas line onto shut-off valve.

3. After completing gas line connection, purge air from gas line

and test all gas joints from the gas meter to the fireplace for
leaks. Use a solution of 50/40 water and soap or a
gas sniffer.

4. To adjust flame height, turn HI/LO knob to HI to get

maximum pressure to burner. Turn HI/LO knob to
LO to get minimum pressure.

5. To check gas pressures at valve, turn captured

screw counter clockwise or 3 turns and then place
tubing to pressure gauge over test point. Turn unit
to high. Figure 43. After taking pressure reading,
be sure and turn captured screw clockwise firmly
to reseal. Do not over torque. Check test points for gas
leaks.

Note: Captured screws for pressure reading are located in
the same place in all three valve types: Millivolt, Electronic and
Remote Hi/Lo.

FP1979
Millivolt gas valve

FP1979

Figure 43 -
Gas Pressure Check at Gas Valve

Pressure
Test “IN”

Pressure
Test “OUT”

HI/LO Knob

Pilot Adjustment Screw

ARNING

Do not use open flame to check for gas
leaks.

eleCtRICAl WIRING

This fireplace will work without any electrical supply except to operate blowers, electronic igni-
tion system and Hi/Lo remote control receiver.
Note: If installed in mobile home, fireplace must be bolted securely to floor.

ARNING

electrical connections should only be performed
by a qualified, licensed electrician. Main power
must be off when connecting to main electrical
power supply or performing service. All wiring
shall be in compliance with all local, city and
state codes. the appliance, when installed, must
be electrically grounded in accordance with
local codes or in the absence of local codes,
with the National electrical Code ANSI/NFPA 70
(latest edition) and Canadian electrical Code,
CSA C22.1.

label all wires before disconnecting when
servicing controls. Wiring errors can cause
improper and dangerous operation.

Verify proper operation after servicing.