Lennox International Inc Lennox Merit Series Gas Furnace Upflow/Horizontal Air Discharge To Drain

Models: Lennox Merit Series Gas Furnace Upflow/Horizontal Air Discharge ML193UH

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To Drain

CONDENSATE TRAP LOCA­ (UnitTIONSshown in upflow position with remote trap)

Field ProvidedVent

Min. 1” Above Condensate

Drain Connection

1” Min.

2” Max.

*5’ max.

PVCPipeOnly

To Drain

*Piping from furnace must slope down a minimum of 1/4” per ft. toward trap.

FIGURE 48

ML193UH With Evaporator

Coil Using A Separate Drain

Condensate Trap With Optional Overflow Switch

From Evaporator Coil

Horizontal Furnace4” Min. to 5” Max. above condensate drain connection)

Furnace Condensate

Drain Connection

Optional

FIGURE 50

(Trap at coil is optional)

Field Provided Vent (1” min. 2” max. above condensate connec­ tion)

Condensate

DrainConnection

Evaporator drain

line required

FIGURE 49

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Lennox International Inc Lennox Merit Series Gas Furnace Upflow/Horizontal Air Discharge, ML193UH To Drain