Monessen Hearth 624DV(ST - Manual (Page 27)

42D0200
Designer Series Gas Fireplaces
27
1. Check gas type. The gas supply must be the same as
stated on the appliance’s rating decal. If the gas supply
is different from the fireplace, SToP! Do not install the
appliance. Contact your dealer immediately.
2. To ease installation, a 30" (762 mm) flex line with manual
shut-off valve has been provided with on this appliance.
Install and attach 1/2" 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 50/50 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 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 37. After taking pressure reading, be sure and
turn captured screw clockwise firmly to reseal. Do
not over torque. Check test points for gas leaks.
ELECTRICaL wIRING
This fireplace will work without any electrical supply. Electricity is only needed to operate blower.
NoTE: If installed in mobile home, fireplace must be bolted securely to floor.
FP1979
Millivolt gas valve
Figure 37 -
Gas Pressure Check at Gas Valve
Pressure
Test “IN”
Pressure
Test “OUT”
HI/LO
Knob
Pilot Adjustment Screw
FP1979
w
a
RNING
do not use open flame to check for gas
leaks.
w
a
RNING
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.
C
au
TI
o
N Label all wires before disconnecting when
servicing controls. wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
MILLIvoLT & ELECTRoNIC ChECK GaS PRESSuRE and ELECTRICaL INSTaLLaTIoN