Lennox Merit Series Installation Instructions

Page 33
(Unit shownin upflow position withremote trap)
*5’ max.
To Drain
PVC PipeOnly
FieldProvidedVent
Min.1” Above Condensate
Drain
Connection
1”
Min.
Trap CanBeInstalleda
Maximum 5’ From Furnac
e
2” Max.
CONDENSATE TRAP LOCATIONS
*Piping from furnace must slope down a
minimum 1/4” per ft. toward trap
Figure 48
Furnace With Evaporator
Coil Using A Separate Drain
Condensate
Drain
Connection
Field Provided Vent
(1” min. 2” max. above
condensate connection)
Evaporator drain
line required
(Trap at coil is optional)
Figure 49
HorizontalFurnace4” Min.to5” Max.above
condensatedrain connection)
FurnaceCondensate
Drain
Connection
From Evaporator Coil
Optional
Condensate Trap With Optional Overflow Switch
Figure 50

Lennox Merit Series Specifications

General

Efficiency	Up to 80% AFUE
Heating Stages	Single-stage
Fuel Type	Natural Gas or Propane
Ignition System	Hot Surface Ignition
Blower Motor	PSC
Warranty	5-Year Limited Parts Warranty
Heating Capacity	44, 000 to 132, 000 BTU/h