Filters

This unit is not equipped with a filter or rack. A field−pro- vided filter is required for the unit to operate properly. Table 3 lists recommended filter sizes.

A filter must be in place whenever the unit is operating.

TABLE 3

Furnace

Filter Size

Cabinet Width

Side Return

Bottom Return

 

 

 

 

17−1/2"

16 X 25 X 1 (1)

16 X 25 X 1 (1)

 

 

 

21"

16 X 25 X 1 (1)

20 X 25 X 1 (1)

 

 

 

24−1/2"

16 X 25 X 1 (2)

24 X 25 X 1 (1)

Duct System

Use industry-approved standards to size and install the supply and return air duct system. This will result in a quiet and low-static system that has uniform air distribution.

NOTE − Operation of this furnace in heating mode (indoor blower operating at selected heating speed) with an exter- nal static pressure which exceeds 0.5 inches w.c. may re- sult in erratic limit operation.

Supply Air Plenum

If the furnace is installed without a cooling coil, a removable access panel should be installed in the supply air duct. The access panel should be large enough to permit inspection (by reflected light) of the heat exchanger for leaks after the furnace is installed. If present, this access panel must al- ways be in place when the furnace is operating and it must not allow leaks into the supply air duct system.

Return Air Plenum

NOTE − Return air must not be drawn from a room where this furnace, or any other gas−fueled ap- pliance (i.e., water heater), or carbon monoxide− producing device (i.e., wood fireplace) is installed.

When return air is drawn from a room, a negative pres- sure is created in the room. If a gas appliance is operating in a room with negative pressure, the flue products can be pulled back down the vent pipe and into the room. This reverse flow of the flue gas may result in incomplete com- bustion and the formation of carbon monoxide gas. This toxic gas might then be distributed throughout the house by the furnace duct system.

Return air can be brought in through the bottom or either side of the furnace. If a furnace with bottom return air is installed on a platform, make an airtight seal between the bottom of the furnace and the platform to ensure that the unit operates properly and safely. Use fiberglass sealing strips, caulking, or equivalent sealing method between the plenum and the furnace cabinet to ensure a tight seal. If a filter is installed, size the return air duct to fit the filter frame.

Pipe & Fittings Specifications

All pipe, fittings, primer and solvent cement must conform with American National Standard Institute and the Ameri- can Society for Testing and Materials (ANSI/ASTM) stan- dards. The solvent shall be free flowing and contain no lumps, undissolved particles or any foreign matter that ad- versely affects the joint strength or chemical resistance of the cement. The cement shall show no gelation, stratifica- tion, or separation that cannot be removed by stirring. Re- fer to the table 4 for approved piping and fitting materials.

CAUTION

Solvent cements for plastic pipe are flammable liq- uids and should be kept away from all sources of ignition. Do not use excessive amounts of solvent cement when making joints. Good ventilation should be maintained to reduce fire hazard and to minimize breathing of solvent vapors. Avoid contact of cement with skin and eyes.

TABLE 4

PIPING AND FITTINGS SPECIFICATIONS

PIPE & FITTING MATERIAL

ASTM

SPECIFICATION

 

 

 

 

 

Schedule 40 PVC (Pipe)

D1785

 

 

Schedule 40 PVC (Cellular Core Pipe)

F891

 

 

Schedule 40 PVC (Fittings)

D2466

 

 

Schedule 40 CPVC (Pipe)

F441

 

 

Schedule 40 CPVC (Fittings)

F438

 

 

SDR−21 PVC or SDR−26 PVC (Pipe)

D2241

 

 

SDR−21 CPVC or SDR−26 CPVC (Pipe)

F442

 

 

Schedule 40 ABS Cellular Core DWV (Pipe)

F628

 

 

Schedule 40 ABS (Pipe)

D1527

 

 

Schedule 40 ABS (Fittings)

D2468

 

 

ABS−DWV (Drain Waste & Vent)

D2661

(Pipe & Fittings)

 

 

 

PVC−DWV (Drain Waste & Vent)

D2665

Pipe & Fittings)

 

 

 

PRIMER & SOLVENT CEMENT

ASTM

SPECIFICATION

 

 

 

 

 

PVC & CPVC Primer

F656

PVC Solvent Cement

D2564

 

 

CPVC Solvent Cement

F493

 

 

ABS Solvent Cement

D2235

 

 

PVC/CPVC/ABS All Purpose Cement For Fit-

D2564, D2235,

tings & Pipe of the same material

F493

 

ABS to PVC or CPVC Transition Solvent

D3138

Cement

 

 

 

CANADA PIPE & FITTING & SOLVENT

MARKING

CEMENT

 

 

 

 

 

PVC & CPVC Pipe and Fittings

 

 

 

PVC & CPVC Solvent Cement

ULCS636

 

ABS to PVC or CPVC Transition Cement

 

Page 16

Page 15 Page 17
Page 16
Image 16
Lennox International Inc Gas Units Filters, Duct System, Pipe & Fittings Specifications, Supply Air Plenum
Page 15 Page 17

G61MP Series Units, Gas Units specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, and its G61MP Series Gas Units stand as a testament to the company's commitment to innovation and energy efficiency. These gas units are specifically designed for residential applications and are recognized for their reliability, performance, and advanced technology.

One of the main features of the G61MP Series is its variable speed motor, which offers significantly enhanced comfort over traditional single-stage gas units. This technology allows for precise temperature control and improved humidity management. By adjusting its speed according to the heating demand, the unit minimizes temperature fluctuations, leading to a more consistent indoor climate.

Another notable characteristic of the G61MP Series is its ECM blower motor, which operates quietly and efficiently. This motor not only reduces energy consumption but also enhances the overall comfort of the home by providing a steady flow of warm air without the disruptive noise often associated with traditional gas units.

The G61MP Series units are designed with a focus on energy efficiency, boasting an impressive Annual Fuel Utilization Efficiency (AFUE) rating. This rating indicates that these units convert a significant portion of the fuel they consume into usable heat, resulting in lower energy bills for homeowners. The units are equipped with a modulating gas valve that further optimizes fuel usage by adjusting the gas flow according to the heating needs of the home.

Safety is a paramount consideration in the design of the G61MP Series. These units are built with advanced safety features, including a self-diagnostic control system that continuously monitors the unit’s performance. This system alerts homeowners to any potential issues, allowing for proactive maintenance and ensuring the longevity of the equipment.

The G61MP Series is also designed for ease of installation and servicing. Its compact design allows for flexible placement in various home environments, while the user-friendly access panels simplify routine maintenance tasks.

In conclusion, Lennox International Inc.'s G61MP Series Gas Units deliver a combination of advanced technology, energy efficiency, and reliability, making them an excellent choice for homeowners looking to enhance their heating systems. With features designed to maximize comfort, minimize energy costs, and ensure safety, these units represent a significant advancement in residential heating solutions.
Top Page Image Contents