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SPECIFICATIONS 15 TON | 17.5 TON
General Data Nominal Tonnage 15 Ton 15 Ton 17.5 Ton 17.5 Ton
Model Number LGM180U4M LGM180U4V LGM210U4M LGM210U4V
 Ultra-High Ultra-High Ultra-High Ultra-High
Blower Type SZVAV 
(Single Zone 
Variable Air Volume)
VAV 
(Variable Air 
Volume)
SZVAV 
(Single Zone 
Variable Air Volume)
VAV 
(Variable Air 
Volume)
Cooling 
Performance
Gross Cooling Capacity - Btuh    
1
 Net Cooling Capacity - Btuh 172,000 172,000 200,000 200,000
1
 AHRI Rated Air Flow - cfm 5250 5250 5400 5400
Total Unit Power  - kW 14.3 14.3  
1
 IEER (Btuh/Watt)  17.5 18.8 18.0
1
 EER (Btuh/Watt) 12.0 12.0 12.0 12.0
Refrigerant 
Charge
Refrigerant Type R-410A R-410A R-410A R-410A
Without Reheat Circuit 1   10 lbs. 8 oz. 10 lbs. 8 oz.
Circuit 2 10 lbs. 15 oz. 10 lbs. 15 oz.  
Circuit 3    
Circuit 4 - - - - - -  
With Reheat Circuit 1 22 lbs. 2 oz. - - - 10 lbs. 8 oz. - - -
Circuit 2  - - - 11 lbs. 0 oz. - - -
Circuit 3  - - -  - - -
Circuit 4 - - - - - -  - - -
Gas Heating Options Available 
 Variable Capacity Scroll (1) 
Fixed Capacity Scroll (2)
Variable Capacity Scroll (1) 
Fixed Capacity Scroll (3)
Outdoor Coils 
Net face area (total) - sq. ft. 55.2 55.2 55.2 55.2
Tube diameter - in. 3/8  3/8  3/8  3/8 
Number of rows 2 2 2 2
Fins per inch 20 20 20 20
Outdoor Coil 
Fans
Motor - (No.) horsepower (4) 1/3 ECM (4) 1/3 ECM  
Motor rpm 280-1075 280-1075  
Total Motor watts 150 -1350 150 -1350  
Diameter - (No.)  in. (4) 24 (4) 24  
Number of blades 3 3 3 3
Total Air volume - cfm    
Indoor Coils Net face area (total) - sq. ft. 21.40 21.40 21.40 21.40
Tube diameter - in. 3/8 3/8 3/8 3/8
Number of rows 3 3 4 4
Fins per inch 14 14 14 14
Drain connection - No. and size (1) 1 in. FPT (1) 1 in. FPT (1) 1 in. FPT (1) 1 in. FPT
Expansion device type Balance port TXV, removable head
2
   Indoor 
Blower 
and 
Drive 
Selection
Nominal motor output 3 hp, 5 hp, 7.5 hp
Max. usable motor output (US) 
Motor - Drive kit number Kit 1 535-725 rpm 
Kit 2 
5 hp 
Kit 3 
Kit 4 850-1045 rpm 
Kit 5 
7.5 hp 
Kit 6 850-1045 rpm 
Kit 7 
Kit 8 1045-1285 rpm
Blower wheel nominal D x W - in. (2) 15 x 15
Filters  Fiberglass, disposable
Number and size - in. 
Electrical characteristics 
NOTE - Net capacity includes evaporator blower motor heat deduction. Gross capacity does not include evaporator blower motor heat deduction.
1
2
 Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of 
motors furnished are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the 
service factor limitations outlined on the motor nameplate.
NOTE – Blower motor service factor = 1.0.