Lennox Merit Series Installation Instructions

Page 37
GROUND
JOINT
UNION
FIELD
PROVIDED
AND INSTALLED
Upflow Application
Left Side Piping
(Standard)
DRIP LEG
MANUAL
MAIN SHUT-OFF
VALVE
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT-OFF
VALVE
Upflow Application
Right Side Piping
(Alternate)
1/2” NPT
1/2” NPT
NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET
Figure 56
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT-OFF
VALVE
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT-OFF
VALVE
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT-OFF
VALVE
Horizontal Applications
Possible Gas Piping Configurations
Horizontal Application
Left-Side Air Discharge
Horizontal Application
Right-Side Air Discharge
NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET
FIELD
PROVIDED
AND INSTALLED
Figure 57

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