Gas Controls Access; Operation / Care Of Your Appliance - Lennox MPD35ST-NM-B Care And Operation Instructions Manual

inlet Gas supply pressure
(all models)
Fuel # Minimum
5.0" Wc
natural Gas
(.24 kpa)
.0" Wc
propane
(2.74 kpa)
Table 3
Manifold Gas supply pressure
(millivolt models)
Fuel # Low
natural (Lo) 2.2" Wc
Gas (.55 kpa)
(Lo) 6.3" Wc
propane
(.57 kpa)
Table 4
Manifold Gas supply pressure
(electronic models)
Fuel #
natural Gas
(.87 kpa)
0.0" Wc
propane
(2.49 kpa)
Table 5
Test gauge connections are provided on the
front of the millivolt gas control valve, identi-
fied IN for the inlet and OUT for the manifold
side (see Figure 2 on Page 4). 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 4).
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).
orifice 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 6). 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
either using gas that has been derated by the gas
company or by changing the burner orifice to a
Maximum
smaller size as regulated by the local authorities
0.5" Wc
having jurisdiction and by the (USA) National
(2.6 kpa)
Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest
edition or, in Canada, the CAN1-B149.1 and .2
3.0" Wc
codes - latest edition.
(3.23 kpa)
Burner orifice sizes (all models)
elevation
Feet (meters)
High
0-4500
(0-372)
(Hi) 3.5" Wc
(.87 kpa)
Table 6
(Hi) 0.0" Wc
(2.49 kpa)
Burn-in period
During the first few fires 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.
Fixed
Depending on your use, the burn-in period may
3.5" Wc
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 film may develop on the glass front
during the first few fires as part of the curing
process. The glass should be kept clean during
the first two weeks of use to prevent the film from
baking on (making it very difficult to remove).
See Cleaning Glass on Page 5.
Figure 1 -
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
natural propane
Gas Gas
drill size (inches) drill size (inches)
#37 (.04") * .55 mm (.06") *
24M00 • 42M790 •
* Standard size installed at factory
• Part /Cat. Number
oFF/piLot/on (gas control knob)
Hi/Lo (flame height
control knob)
oFF/on switch
Hinge pin
control
compartment access panel
Gas control compartment access
Gas control compartment access
The gas controls can be found behind the
control compartment access panel. To open
the control compartment access panel, actuate
the spring-loaded magnetic catches securing
the panel.
First, depress the outer top right corner of the
panel until the catch "pops" the door free. Then,
gently pull the door forward until the left top
corner "pops" free, allowing the panel to swing
out and down to open.
On millivolt systems, the piezo igniter, HI/LO
flame 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.
To ease door closure, depress the catches to
place them in their retracted position, then
close the door.
operation and care oF Your
appLiance
The standard controls for appliance operation
are located behind the hinged drop-down panel
below the appliance front glass enclosure panel
(see Figure 1). Optional control switches are
also available (see Page 12 - 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.
note:the gas supply
line must be installed
in accordance with
building codes by a
qualified installer
approved and/or
licensed as requed
by the locality. in
the commonwealth
of Massachusetts,
Gas Flex Line
Gas Valve
piezo igniter
installation must
be performed
by a licensed
plumber or gas
fitter.
3