Lennox Merit ML193UH User Manual

Page 37
GROUND
JOINT
UNION
AUTOMATIC
GAS VALVE
(with manual
shut−off valve)
FIELD
PROVIDED
AND INSTALLED
Left Side Piping
(Standard)
DRIP LEG
MANUAL
MAIN SHUT−OFF
VALV E
Right Side Piping
(Alternate)
NOTE − BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET
Bellows Grommet
PlugPlug
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT−OFF
VALV E
Gas Valve
Gas Valve
Bellows Grommet
FIGURE 63
Horizontal Applications
Possible Gas Piping Configurations
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT−OFF
VALV E
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT−OFF
VALV E
GROUND
JOINT
UNION
DRIP LEG
MANUAL
MAIN SHUT−OFF
VALV E
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
Bellows Grommet
Bellows Grommet
Bellows Grommet
Plug
Gas Valve
Gas Valve
FIGURE 64

Lennox Merit ML193UH Specifications

General

Efficiency	Up to 93% AFUE
Heating Stages	Single-stage
Blower Motor	PSC
Gas Valve	Single-stage
Energy Star Certified	No
Fuel Type	Natural Gas or Propane
Cabinet Type	Upflow/Horizontal
Ignition Type	Hot Surface Ignition
Heat Exchanger	Aluminized Steel
Heating Capacity	44, 000-132, 000 BTU/h