Lennox CompleteHeat, AM30, HM30 User's Information Manual

PRODUCT LITERATURE

503,718M
6/98
Supersedes 8/97



CompleteHeat

COMBINATION

HEATING

SYSTEM

TM

` SYSTEM OPERATION

` MAINTENANCE

` SAFETY CONSIDERATIONS

Litho U.S.A.

1997 Lennox Industries Inc.

INTRODUCTION

The CompleteHeat

TM

Combination Heating System

Congratulations on the purchase of your Lennox CompleteHeat system.

Lennox takes pride in manufacturing high quality products that keep you

comfortable while saving you energy and money.

The CompleteHeat system is a highĆefficiency combination waterĆ and

spaceĆheating system. The system consists of an air module (AM30) and a

heating module (HM30). The two units work together to provide warm air like

a furnace and hot potable water like a hot water heater. The CompleteHeat sysĆ

tem takes care of these needs while being up to 40% more efficient than stanĆ

dard furnaces and water heaters.

This booklet explains how the CompleteHeat system operates, how to identify

the unit model number, how to operate a typical thermostat and how to mainĆ

tain the system for optimum performance. Keep this booklet and the warranty

shipped with the CompleteHeat system for future reference.

Thank you again for choosing Lennox.

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HOW THE CompleteHeatTM SYSTEM WORKS

The CompleteHeat system consists of a heating module (HM30) that produces hot water and an air hanĆ

dling module (AM30) that sends warmed air through the home's duct system. The two modules may be

installed together (closeĆcoupled) or apart (remote).

The system's operation begins when cold potable water fills the water storage tank through the pipe at

the top of the HM30 unit. When heat is needed to produce warm water or air, the HM30 control tells the

combustion air blower to draw in outside air for use in combustion. After a short safety delay, a fuel mixĆ

ture is sent into the burner where it is ignited by an electronic spark. Burning fuel moves through the

stainless steel heat exchanger inside the water storage tank. The water surrounding the heat exchanger is

heated until the water temperature reaches the desired setpoint on the water thermostat dial.

Combustion products travel out of the heat exchanger, condensate water is drained, and exhaust gases

are vented safely to the outdoors. Hot water is directed from the HM30 to faucets, shower heads, and

appliances (such as the dishwasher and washing machine) through the plumbing located on top of the

HM30 unit.

When the room thermostat senses a need for heat, the AM30 water circulating pump draws hot water

from the HM30 heating module and routes it through the AM30 space heating coil. The aluminium and

copper coil absorbs heat from the water. The blower turns on, blowing air across the heated coil.

Warmed air is sent through the air duct system into the home. Water circulates back to the HM30 unit to

be reheated until the room temperature reaches the thermostat setting.

CompleteHeat Typical Applications

Upflow CloseĆCoupled Installation

with Cooling Coil

Air Conditioner

Horizontal Remotely Located Installation

with Cooling Coil

AM30

Air Handling

Module

HM30
Heating
Module

AM30

Air Handling

Module

HM30

Heating Module

Air Conditioner

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