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Lennox G61MPVT User Manual

Lennox G61MPVT
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G A S F U R N A C E S
G61MPVT
Multi−Position − Two−Stage Heat
Variable−Speed − 50HZ
E N G I N E E R I N G D A T A Bulletin No. 490115
December 2006
Australian Gas Association Rating − 5.3 Stars
Input − 69.6 to 139.3 Mj/h
Nominal Add−on Cooling − 10.5 to 17.6 kW
MODEL NUMBER IDENTIFICATION
G 61 36−B 070
Unit Type
G = Gas Furnace
Series
61 = Two−Stage
Nominal Add−On Cooling Capacity
36 = 10.5 kW
60 = 17.6 kW
1
Cabinet Width
B = 445 mm
C = 533 mm
D = 622 mm
Gas Heat Input
070 = 69.6 Mj/h
090 = 92.8 Mj/h
110 = 116.1 Mj/h
135 = 139.3 Mj/h
1
Indoor coils with the same letter designation will physically match the furnace.
MP
Configuration
MP = Multi−Position
V T −1
Version
Voltage
T = 240V−1ph−50hz
Blower
V = Variable Speed Blower
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Lennox G61MPVT Specifications

General IconGeneral
ModelG61MPVT
TypeGas Furnace
Efficiency RatingHigh Efficiency
Fuel TypeNatural Gas or Propane
Blower TypeVariable Speed
AFUEUp to 95%
StagesTwo-Stage
AFUE RatingUp to 95%
Blower MotorVariable-Speed ECM
Heating Capacity (BTU/h)44, 000 to 132, 000 BTU/h
Motor TypeECM
Vent TypeDirect Vent (Sealed Combustion)
Warranty (Details)Limited Lifetime Heat Exchanger warranty, 5-Year Limited Parts warranty. (May be extended with registration)

Summary

Model Number Identification

Features and System Components

Heating System Components

Describes the heat exchanger assembly, secondary coil, and condensate header box.

Heating System Details and Controls

Inshot Burners

Describes the aluminized steel inshot burners, their mixing capabilities, and ease of service.

Two-Stage Gas Control Valve

Explains the 24-volt redundant gas control valve integrating manual shut-off, automatic electric valve, and gas pressure regulation.

Integrated Control System

Describes the solid-state control board, ignition sequence, flame sensing, and fault code storage.

Specifications and Accessories

Gas Heating Performance Data

Provides detailed input/output data, temperature rise, and manifold pressure for high and low fire conditions.

Altitude and Venting Information

High Altitude Pressure Adjustment

Provides guidance on pressure regulator adjustment based on altitude and fuel type.

Manifold Pressure at High Fire

Table showing manifold pressure settings for natural gas and LPG/Propane at different altitudes.

Venting Tables by Altitude

Shows maximum equivalent vent lengths for different pipe diameters and models at lower and higher altitudes.

Termination Kit Equivalent Lengths

Details equivalent lengths for concentric kits and exhaust accelerators based on heat size and vent pipe diameter.

Installation Configurations and Clearances

Required Installation Clearances

Specifies minimum clearances required from sides, rear, top, front, and floor for safe installation.

Unit Dimensions

Up-Flow Position Dimensions

Diagrams and tables showing front, top, and side views with dimensions for up-flow position.

Furnace and Coil Combined Dimensions

Termination Kit Configurations

Blower Performance Data

G61MPVT-36B-070 Blower Performance

Tables showing heat and cool speed performance (L/s) for various ADJUST switch positions.

G61MPVT-60C-090 Blower Performance

Tables showing heat and cool speed performance (L/s) for various ADJUST switch positions.

G61MPVT-60C-090 Blower Performance (Side Return)

Tables for side return air, noting bold values require a transition for filter compatibility.

G61MPVT-60C-110 Blower Performance

Tables showing heat and cool speed performance (L/s) for various ADJUST switch positions.

Additional Blower Performance Data

G61MPVT-60C-110 Blower Performance (Side Return)

Tables for side return air, noting bold values require a transition for filter compatibility.

G61MPVT-60D-135 Blower Performance

Tables showing heat and cool speed performance (L/s) for various ADJUST switch positions.

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