Lennox International Inc G61MP specifications Carbon Monoxide Poisoning Hazard, Sweep ELL

TYPICAL AIR INTAKE PIPE CONNECTIONS

DOWNFLOW NON-DIRECT VENT APPLICATIONS (Right-Hand Exit in Downflow Applications Shown)

2" SWEEP

ELL

INTAKE DEBRIS SCREEN (Provided)

PLUG (Must be glued in place)

6 in. Max.

INTAKE DEBRIS

SCREEN (Provided)

Downflow

Evaporator

Coil

PLUG
(Must be
glued in
place)	2"
	18 in.

2" SWEEP ELL

Downflow Additive Flloor Base

NOTE − Debris screen and sweep ell may be rotated, so that screen may be positioned to face forward, backward or to the side.

FIGURE 18

1 − Use field−provided materials and the factory−provided air intake screen to route the intake piping as shown in figures 17 and 18. Maintain a minimum clearance of 3" (76mm) around the air intake opening. The air intake opening (with the protective screen) should always be directed either downward or straight out. Use 2" pipe and fittings only and make sure that the air intake does not extend more than 6" beyond the G61MP cabinet. The air intake connector must not be located near the floor. To avoid this complication in downflow applications which do not include a downflow evaporator coil, the intake air routing should be modi- fied as shown in figure 18.

2 − Use a #7 sheet metal screw to secure the intake pipe to the connector, if desired. A pilot indentation is provided in the slip connector to assist in locating and starting the fas- tener.

3 − Glue the provided 2" plug into the unused air intake con- nector on the opposite side of the cabinet.

Testing for Proper Venting and Sufficient Combustion Air

(Non−Direct Vent Applications Only)

WARNING

CARBON MONOXIDE POISONING HAZARD!

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monox- ide poisoning or death.

The following steps shall be followed for each ap- pliance connected to the venting system being placed into operation, while all other appliances con- nected to the venting system are not in operation.

After the G61MP gas furnace has been started, the follow- ing test should be conducted to ensure proper venting and sufficient combustion air has been provided to the G61MP, as well as to other gas-fired appliances which are separate- ly vented. The test should be conducted while all ap- pliances (both in operation and those not in operation) are connected to the venting system being tested. If the vent- ing system has been installed improperly, or if provisions have not been made for sufficient amounts of combustion air, corrections must be made as outlined in the previous section.

1 − Seal any unused openings in the venting system.

2 − Visually inspect the venting system for proper size and horizontal pitch. Determine there is no blockage or re- striction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.

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