Lennox MERIT ML180UH045E36A, Manual

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OPTIONAL ACCESSORIES - ORDER SEPARATELY
“A” Width
Models
“B” Width
Models
“C” Width
Models
“D” Width
Models
CABINET ACCESSORIES
Horizontal Suspension Kit - Horizontal only
51W10 51W10 51W10 51W10
Return Air Base - Upflow only 65W75 50W98 50W99 51W00
High Performance Economizer (Commercial Only) 10U53 10U53 10U53 10U53
CONTROLS
iComfort
®
M30 Smart Wi-Fi Thermostat 15Z69 15Z69 15Z69 15Z69
Remote Outdoor Air Temperature Sensor X2658 X2658 X2658 X2658
Blower Relay Kit (for two-stage outdoor units) 85W66 85W66 85W66 85W66
Furnace Twinning Kit 16W72 16W72 16W72 16W72
FILTERS
1
Air Filter and Rack Kit Horizontal (end) 87L95 87L96 87L97 87L98
Size of filter - in. 14 x 25 x 1 18 x 25 x 1 20 x 25 x 1 25 x 25 x 1
Side Return Single 44J22 44J22 44J22 44J22
Ten Pack 66K63 66K63 66K63 66K63
Size of filter - in. 16 x 25 x 1 16 x 25 x 1 16 x 25 x 1 16 x 25 x 1
NIGHT SERVICE KIT
Night Service Kit
84W47 84W47 84W47 84W47
VENTING
Vent Adaptor − 6 in. conn. size upflow applications only 18M79 18M79 18M79 18M79
1
Cleanable polyurethane, frame-type filter.
GAS HEAT ACCESSORIES
Input
High Altitude
Pressure Switch Kit
Natural Gas to
LPG/Propane Kit
LPG/Propane
to Natural Gas Kit
Natural Gas
High Altitude
Orifice Kit
0 - 4500 ft. 4501 - 7500 ft. 7501 - 10,000 ft. 0 - 7500 ft. 7501 - 10,000 ft. 0 - 7500 ft. 7501 - 10,000 ft.
045 No Change 80W52 80W51 11K49 11K44 73W81 73W37
070 No Change 80W52 80W51 11K49 11K44 73W81 73W37
090 No Change 80W52 80W51 11K49 11K44 73W81 73W37
110 No Change 80W52 80W52 11K49 11K44 73W81 73W37
135 No Change 80W52 80W51 11K49 11K44 73W81 73W37
NOTE - Units may be installed at altitudes up to 2000 ft. above sea level without any modifications.
At altitudes above 2000 ft. units must be derated to match information in the shaded areas shown below.
NOTE - This is the only permissible derate for these units.
Input
Gas Manifold Pressure (Outlet) in. w.g. Line Pressure - in. w.g.
0 - 2000 Feet 2001 - 4500 Feet 4501 - 7500 Feet 7501 - 10,000 ft. Minimum
Maximum
Natural
Gas
LPG/
Propane
Natural
Gas
LPG/
Propane
Natural
Gas
LPG/
Propane
1
Natural
Gas
LPG/
Propane
Natural
Gas
LPG/
Propane
045 3.5 10 3.2 10 3 10 3.5 10 4.5 11 13
070 3.5 10 3.2 10 2.8 10 3.5 10 4.5 11 13
090 3.5 10 3.2 10 2.7 9.6 3.5 10 4.5 11 13
110
3.5 10 3.5 10 3 9.6 3.5 10 4.5 11 13
135 3.5 10 3.5 10 2.9 9.6 3.5 10 4.5 11 13
1
Natural Gas High Altitude Orifice Kit required.
HIGH ALTITUDE