Operating instructions
75D0004 9
MLDV Series Gas Fireplace
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 replace, STOP! Do not
install the appliance. Contact your dealer immedi-
ately.
. To ease installation, a 4" (610 mm) ex 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 replace for leaks. Use a solution of 50/50
water and soap solution or a gas sniffer.
4. To adjust ame 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 47 After taking pressure reading,
be sure and turn captured screw clockwise rmly
to reseal. Do not over torque. Check test points for gas
leaks.
FP1979
Millivolt gas valve
FP1979
Figure 47 -
Gas Pressure Check at Gas Valve
Pressure
Test “IN”
Pressure
Test “OUT”
HI/LO Knob
Pilot Adjustment Screw
This replace will work without any electrical supply. Elec-
tricity is only needed to operate blower.
If installed in mobile home, replace must be bolted
securely to oor.
Verify proper operation after servicing.










