9
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MONTEBELLO
®
POWER VENT DV GAS FIREPLACES (LSM40/45EN-PV) • CARE AND OPERATION INSTRUCTIONS
Variable Flame Height Adjustment
These appliances are equipped with a variable
gas control valve. Flame height for these models
may be adjusted through a range between fixed
low and high settings, alternately, while the
appliance is in operation. Use the extension
knob (refer to
Figure 1)
, to adjust the flame
height as desired by sliding the knob over the
variable flame adjustment knob located on the
front of the valve (refer to
Figures 1 and 3
)
.
Replace the extension knob back to the hanger
after the adjustment.
Lighting Electronic Appliances
To light electronic appliances refer to the detailed lighting instructions found on
Page 17
of these
instructions respectively. Electronic appliance lighting instructions may also be found on the
pull out lighting instruction labels attached to the gas control valve.
Electronic appliances are fitted with an ON/OFF rocker switch for appliance ON/OFF control. See
Figure 1
for its location.
Once the pilot is lighted, the ON/OFF rocker switch will control the appliance ON/OFF operation. To
operate: Toggle the switch between its ON and OFF positions.
POWER VENT OPERATING INSTRUCTIONS
Power Vent Control Sequences
Turn On
1. Turn On The Thermostat Or On/Off Switch.
2. Blower Should Start Immediately.
3. Igniter Starts Sparking And Pilot Will Light.
4. Burner Should Light After A Few Seconds.
5. Fireplace Should Run Continuously Until Thermostat Or On/Off Switch Is Turned Off.
Turn Off
1. Turn Off The Thermostat Or On/Off Switch.
2. Burner And Pilot Should Be Off Immediately.
3. Blower Will Continue To Run For About 90 Seconds And Then The Blower Will Stop.
16.17
(411 mm)
15.92
(404 mm)
10.00
(254 mm)
11.19
(284 mm)
13.50
(343 mm)
Top View
Front View
Note:
Dimensions Are In Inches (mm)
16.17
(411 mm)
15.92
(404 mm)
10.00
(254 mm)
11.19
(284 mm)
13.50
(343 mm)
Top View
Front View
Top View
Front View
Hi / Lo
Variable Flame
Height
Adjustment
Gas Supply Inlet
Manifold
Pressure
Gauge Port
Inlet Pressure
Gauge Port
Pilot
Adjustment
Screw
Gas Outlet to Burner
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 3
- SIT Electronic Gas Valve
HI
LO
Figure 2 - Power Vent Specifications
