Lennox Hearth MPD-33 Series, MPD-45 Series, MPD-40 Series Electronic Models, All Models

Input of millivolt models is shown in the following table:

Millivolt Models with

Manually-Modulated Gas Valve

Natural Gas

Model Series	Input rate (BTU/H)
MPDT-3328	11,700 to 17,500
MPDR-3328
MPD-3530	12,800 to 20,000
MPD-4035	18,500 to 27,000
MPD-4540	20,500 to 29,000

Millivolt Models with

Manually-Modulated Gas Valve

Propane Gas

Model Series	Input rate (BTU/H)
MPDT-3328	14,000 to 17,500
MPDR-3328
MPD-3530	15,200 to 20,000
MPD-4035	21,500 to 27,000
MPD-4540	22,500 to 29,000

Electronic Models -

Electronic models have a fixed rate gas valve. Input of electronic models is shown in the following table:

Electronic Models with Fixed-Rate Gas Valve

Natural and Propane Gas

Model Series	Input rate (BTU/H)
MPDT-3328	17,500
MPDR-3328
MPD-3530	20,000
MPD-4035	27,000
MPD-4540	29,000

All Models -

Maximum manifold pressure is 3.5 in. w.c. (0.87 kPa) for natural gas and 10 in. w.c. (2.49 kPa) for LP/Propane gas.

Installations at Altitudes of 0 to 4500 ft.- Units are tested and approved for elevations of 0 to 4500 feet (0 to 1372 meters).

Installations at Altitudes above 4500 ft.- For elevations above 4500 feet (1372 meters), install the unit according to the regulations of the local authorities having jurisdiction and, in the USA, the latest edition of the National Fuel Gas Code (ANSI Z223.1) or, in Canada, the latest edition of the CAN1-B149.1 and .2 codes.

Table 1 shows the units' gas orifice size for the elevations indicated.

The millivolt appliances are manually controlled and feature a spark ignitor (piezo) that allows the appliance's pilot gas to be lit without the use of matches or batteries. This system provides continued service in the event of a power outage.

Model	Orifice size		Elevation
			Feet
Series
			(meters)
	Nat.	Prop.
MPDT-3328	#45	0.048 inch
MPDR-3328
			0-4500
MPD-3530	#44	#55
			(0-1370)
MPD-4035	#37	0.062 inch
MPD-4540	#36	#52

Table 1

Do not use these appliances if any part has been under water. Immediately call a qualified, professional service technician to inspect the appliance and to replace any parts of the con- trol system and any gas control which have been under water.

Ne pas se servir de cet appareil s'il a été plongé dans l'eau, complètement ou en partie. Appeler un technicien qualifié pour inspecter l'appareil et remplacer toute partie du système de contrôle et toute commande qui ont été plongés dans l'eau.

This appliance may be installed in an after- market permanently located, manufactured home (USA only) or mobile home, where not prohibited by local codes. This appli- ance is only for use with the type of gas indicated on the rating plate. This appli- ance is not convertible for use with other gases, unless a certified kit is used.

Cet appareil peut être installé dans un maison préfabriquée (É.-U. seulement) ou mobile déjà installée à demeure si les réglements locaux le permettent.

Cet appareil doit être utilisé uniquement avec les types de gaz indiqués sur la plaque signalétique. Ne pas l'utiliser avec d'autres gaz sauf si un kit de conversion certifié est installé.

Test gage connections are provided on the front of the millivolt gas control valve (identi- fied IN for the inlet and OUT for the manifold side). A 1/8" NPT test gage connection is provided at the inlet and outlet side of the electronic gas control valve.

Minimum inlet gas pressure to these appliances is 5.0 inches water column (1.24 kPa) for natural gas and 11 inches water column (2.74 kPa) for propane for the purpose of input adjustment.

Maximum inlet gas supply pressure to these appliances is 10.5 inches water column (2.61 kPa) for natural gas and 13.0 inches water column (3.23 kPa) for propane.

These appliances must be isolated from the gas supply piping system (by closing their individual manual shut-off valve) during any pressure test- ing of the gas supply piping system at test pres- sures equal to or less than 1/2 psig (3.5 kPa).

Theseappliancesandtheirindividualshut-offvalves must be disconnected from the gas supply piping system during any pressure testing of that system at pressures in excess of 1/2 psig (3.5 kPa).

These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance.

These heater rated appliances are intended for use as supplemental heaters only.

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, obtain fresh air immediately. Turn off the gas supply to the appliance and have it serviced by a qualified professional, as it may not be op- erating correctly.

WARNING: FAILURE TO COMPLY WITH THE INSTALLATION AND OPERATING IN- STRUCTIONS PROVIDED IN THIS DOCU- MENT WILL RESULT IN AN IMPROP- ERLY INSTALLED AND OPERATING AP- PLIANCE, VOIDING ITS WARRANTY. ANY CHANGE TO THIS APPLIANCE AND/ OR ITS OPERATING CONTROLS IS DAN- GEROUS. IMPROPER INSTALLATION OR USE OF THIS APPLIANCE CAN CAUSE SERIOUS INJURY OR DEATH FROM FIRE, BURNS, EXPLOSION OR CARBON MON- OXIDE POISONING.

WARNING: CHILDREN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS OF HIGH SURFACE TEMPERATURES. USE CAUTION AROUND THE APPLIANCE TO AVOID BURNS OR CLOTHING IGNITION. YOUNG CHILDREN SHOULD BE CARE- FULLY SUPERVISED WHEN THEY ARE IN THE SAME ROOM AS THE APPLIANCE.

WARNING: DO NOT PLACE CLOTHING OR OTHER FLAMMABLE MATERIALS ON OR NEAR THIS APPLIANCE.

AVERTISSEMENT: SURVEILLER LES ENFANTS. GARDER LES VÊTEMENTS, LES MEUBLES, L'ESSENCE OU AUTRES LIQUIDES À VAPEUR INFLAMMABLES À COTE DE L'APPAREIL.

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