Lennox International Inc MPB35ST-NM Operation and Care of Your Appliance, Millivolt Appliances

WARNING

Carbon monoxide poisoning: early signs of carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea. If you have these signs, obtainfreshairimmediately.Turn off the gas supply to the appliance and have it serviced by a quali- fied professional, as it may not be operating correctly.

WARNING

Any safety guard or screen removed for servicing the appli- ance must be replaced prior to operating the appliance.

WARNING

B-Ventappliancesarenotdesigned to operate in negatively pressured environments (pressure within the home is less than pressures outside). Significant negatively pressured environments caused by weather, home design, or other devices may impact the operation of these appliances. Negative pressuresmayresultinpoorflame appearance, sooting, damage to property and/or severe personal injury. Do not operate these appli- ances in negatively pressured environments.Providingadequate ventilation to the appliance for combustion air will eliminate a negative pressure environment.

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 15 - Remote Wall Switch or Remote Control).

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.

Millivolt Appliances - Appliances with Millivolt systems will be fitted with the gas control valve shown in Figure 2.

Electronic Appliances - Appliances with electronic systems will be fitted with the electronic valve shown in Figure 3.

Millivolt Appliances -

4

WARNING

Do not place clothing or other flammable materials on or near appliance.

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 secur- ing 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.

OFF/PILOT/ON (gas control knob)

HI/LO (flame height

control knob)

Gas Flex Line

OFF/ON Switch

Hinge Pin

Gas Valve

Control	Piezo Igniter
Compartment Access panel

Note: The gas supply line must be installed in accordance with building codes by a qualified installer approved and/or licensed as required by the locality. In the Commonwealth of Massachu- setts, installation must be performed by a licensed plumber or gas fitter.

Figure 1 - Gas Control Compartment Access

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

To light millivolt appliances refer to the detailed lighting instructions found on Page 18 . Millivolt appliance lighting instructions may also be found on the pull out lighting instruction labels attached to the gas control valve.

SIT Millivolt			Gas Valve
HI/LO Variable			Inlet Pressure Tap
Flame Height
Adjustment	Manifold Pressure Tap
			OUT	IN
TPTH
T		I H
P			OFF
				P
				I
		LO W	it	L
TH				O
			NO	T
	P
I
TOL
Pilot Adjustment		Main Gas Control Knob
Screw			OFF/PILOT/ON
Note: The piezo igniter is located below
the valve (see Figure 1).
				Gas
				Inlet
Gas			TPTH
			TP
Outlet			TH
				Main Gas
		HI/LO Variable
Terminals				Control Knob
		Flame Height		OFF/PILOT/ON
TPTH,TP & TH		Adjustment
Figure 2