Gas Controls Access; Operation/Care Of Your Appliance - Lennox Hearth Products LMDTV-3328CNM Homeowner's Care And Operation Instructions Manual

Gas Pressure -
Tables 4, 5 and 6 show the appliances' gas
pressure requirements.
Inlet Gas Supply Pressure
(all models)
Fuel # Minimum
5.0" WC
Natural Gas
(1.24 kPa)
11.0" WC
Propane
(2.74 kPa)
Table 4
Manifold Gas Supply Pressure
(millivolt models)
Fuel # Low
Natural (Lo) 2.2" WC
Gas (.55 kPa)
(Lo) 6.3" WC
Propane
(1.57 kPa)
Table 5
Manifold Gas Supply Pressure
(electronic models)
Fuel #
Natural Gas
Propane
Table 6
Test gauge connections are provided on the
front of the millivolt gas control valve, identifi ed
IN for the inlet and OUT for the manifold side
(see Figures 4 or 5 on Page 5). A 1/8" NPT
Test gauge connection is provided at the inlet
and outlet (manifold) ports on the electronic gas
control valve (see Figure 3 on Page 5).
These appliances must be isolated from the
gas supply piping system (by closing their
individual manual shut-off valve) during any
pressure testing of the gas supply piping
system at test pressures equal to or less than
1/2 psig (3.5 kPa).
These appliances and their individual shut-off
valves must be disconnected from the gas
supply piping system during any pressure
testing of that system at pressures greater
than 1/2 psig (3.5 kPa).
Orifi ce Sizes - Sea Level to High Altitude
(All Models): These appliances are tested and
approved for installations at elevations of 0-4500
feet (0-1372 meters) above sea level using the
standard burner orifice sizes (marked with an
"*" in Table 7).
4
At the time of installation, it must be determined
if the appliance needs to be derated. Contact
your local gas supplier for deration requirements
for your area.
Deration - At higher elevations, the amount of
BTU fuel value delivered must be reduced by
Maximum
either using gas that has been derated by the gas
10.5" WC
company or by changing the burner orifi ce to a
(2.61 kPa)
smaller size as regulated by the local authorities
having jurisdiction and by the (USA) National
13.0" WC
Fuel Gas Code NFPA 54/ANSI Z223.1 - latest
(3.23 kPa)
edition or, in Canada, the CAN1-B149.1 and .2
codes - latest edition.
Elevation 0-4500 feet ( 0-1372 meters)
High
Model
(Hi) 3.5" WC
Series
(.87 kPa)
(Hi) 10.0" WC
LMDVT-3328
(2.49 kPa)
LMDVR-3328
LMDV-3530
LMDV-4035
Fixed
* Standard size installed at factory
3.5" WC
• Part /Cat. Number
(.87 kPa)
Table 7
10.0" WC
(2.49 kPa)
Burn-in Period
During the fi rst few fi res of this appliance there
will be some odor due to the curing of the
paint and burning off of lubricants used in the
manufacturing process.
Depending on your use, the burn-in period may
take a few hours or a few days.
KEEP YOUR HOUSE WELL VENTILATED
DURING THE CURING PROCESS. THE ODOR
AND HAZE EMITTED DURING THE CURING
PROCESS CAN BE QUITE NOTICEABLE AND
MAY SET OFF A SMOKE DETECTOR.
If an optional blower is installed, Do not turn it
on during the Burn-In period.
A white fi lm may develop on the glass front
during the fi rst few fi res as part of the curing
process. The glass should be kept clean during
the fi rst two weeks of use to prevent the fi lm from
baking on (making it very diffi cult to remove).
See Cleaning Glass on Page 6.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Burner Orifi ce Sizes
Natural Propane
Gas Gas
drill size drill size (inches)
(inches)
#45 (.082") * 1.2 mm (.048") *
39L66 • 99K78 •
#44 (.086") * #55 (.052") *
60J80 • 19L52 •
#37 (.104") * 1/16" (.0625") *
24M10 • 21L01 •
Gas Controls/Control Compartment
Access
The gas controls can be found behind the control
compartment access door.
Removing Control Compartment Door:
Open the door by gently liftint it upward until the
hook catches on boths sides clear the locating
slots. Then pull door out to remove.
On millivolt systems, the piezo igniter, HI/LO
fl ame adjustment knob, and pilot and main
gas OFF/ON control knob are located below
the glass panel enclosure. The gas valve for
electronic systems is also located below the
glass enclosure panel. See Figure 1.
Reinstalling Control Compartment Door:
To reinstall, insert the hook catches on each side
of the door into the corresponding slots in the
control compartment opening, then gently push
forward and slide down until it locks in place.
Lift the Lower Control
Compartment Door
OPENING CONTROL
up and pull out to
COMPARTMENT DOOR
remove.
Hook Catch
Control Valve
Out
Up
Lower Control
Compartment Door
Figure 1
OPERATION AND CARE OF YOUR
APPLIANCE
The standard controls for appliance operation
are located behind the panel below the appli-
ance front glass enclosure panel (see Figure
1). Optional control switches are also available
(see Page 14 - Remote Wall Switch, Remote
Control or Wall Thermostat).
Operation of millivolt and electronic gas con-
trol systems are different. Before lighting and
operating your appliance determine if you have
a millivolt or electronic appliance. Familiarize
yourself with the gas control valve that your
appliance uses. Refer to Figure 1 for access
to the gas control valve.