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SPECIFICATIONS LGA/LCA
General
Data
Nominal Tonnage (kW) 25 Ton 25 Ton 25 Ton 25 Ton
Model No. 300H2B 300H4B 300H2V 300H4V
Efficiency Type High High High High
Blower Type Constant Air
Volume (CAV)
Constant Air
Volume (CAV)
Variable Air
Volume (VAV)
Variable Air
Volume (VAV)
Cooling
Performance
Gross Cooling Capacity − Btuh (kW) 311,000 (91.1) 311,000 (91.1) 311,000 (91.1) 311,000 (91.1)
1
Net Cooling Capacity − Btuh (kW) 300,000 (87.9) 300,000 (87.9) 300,000 (87.9) 300,000 (87.9)
ARI Rated Air Flow − cfm (L/s) 9500 (4484) 9500 (4484) 9500 (4484) 9500 (4484)
Total Unit Power (kW) 27.3 27.3 27.3 27.3
1
EER (Btuh/Watt) 11.0 11.0 11.0 11.0
2
Integrated Part Load Value (Btuh/Watt) 11.5 11.8 13.4 14.0
Refrigerant Type R−22 R−410A R−22 R−410A
Refrigerant Charge
Furnished
Circuit 1 11 lbs. 0 oz.
(4.99 kg)
13 lbs. 0 oz.
(5.9 kg)
12 lbs. 0 oz.
(5.44 kg)
13 lbs. 0 oz.
(5.9 kg)
Circuit 2 11 lbs. 0 oz.
(4.99 kg)
13 lbs. 0 oz.
(5.9 kg)
12 lbs. 0 oz.
(5.44 kg)
13 lbs. 0 oz.
(5.9 kg)
Circuit 3 11 lbs. 0 oz.
(4.99 kg)
13 lbs. 0 oz.
(5.9 kg)
12 lbs. 0 oz.
(5.44 kg)
13 lbs. 0 oz.
(5.9 kg)
Circuit 4 11 lbs. 0 oz.
(4.99 kg)
13 lbs. 0 oz.
(5.9 kg)
12 lbs. 0 oz.
(5.44 kg)
13 lbs. 0 oz.
(5.9 kg)
Gas Heating Options Available − See Page 7 Standard (2 Stage), Medium (2 Stage), or High (2 Stage)
Compressor Type (no.) Scroll (4) Scroll (4) Scroll (4) Scroll (4)
Outdoor
Coils
Net face area − sq. ft. (m
2
) total 70.6 (6.6) 70.6 (6.6) 70.6 (6.6) 70.6 (6.6)
Tube diameter − in. (mm) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)
Number of rows 2 2 2 2
Fins per inch (m) 20 (787) 20 (787) 20 (787) 20 (787)
Outdoor
Coil
Fans
Motor horsepower (W) (6) 1/3 (249) (6) 1/3 (249) (6) 1/3 (249) (6) 1/3 (249)
Motor rpm 1075 1075 1075 1075
Total Motor watts 2500 2500 2500 2500
Diameter − in. (mm) (6) 24 (610) (6) 24 (610) (6) 24 (610) (6) 24 (610)
Number of blades 3 3 3 3
Total Air volume − cfm (L/s) 21,500 (10,145) 21,500 (10,145) 21,500 (10,145) 21,500 (10,145)
Evaporator
Coils
Net face area − sq. ft. (m
2
) total 33.3 (3.1) 33.3 (3.1) 33.3 (3.1) 33.3 (3.1)
Tube diameter − in. (mm) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)
Number of rows 3 3 3 3
Fins per inch (m) 14 (551) 14 (551) 14 (551) 14 (551)
Condensate Drain − number and size (1) 1 in. NPT coupling
Expansion device type Balanced Port Thermostatic Expansion Valve, removeable power head
3
Indoor
Blower and
Drive
Selection
Nominal motor output 5 hp (3.7 kW) − 7.5 hp (5.6 kW) − 10 hp (7.5 kW)
Max. usable motor output (US Only) 5.75 hp (4.3 kW) − 8.63 hp (6.4 kW) − 11.5 hp (8.6 kW)
Motor − Drive kit 5 hp
kit #1 − 660 − 810 rpm
kit #2 − 770 − 965 rpm
kit #6 − 560 − 710 rpm
7.5 hp
kit# 3 − 715 − 880 rpm
kit# 4 − 770 − 965 rpm
10 hp
kit #3 − 715−880 rpm
kit #5 − 850 − 1045 rpm
5 hp
kit #7 − 965 rpm
7.5 hp
kit #8 − 965 rpm
10 hp
kit #9 − 1045 rpm
Blowerwheelnominaldiameterxwidth (2) 18 x 15 in. (457 x 381 mm)
Filters Type of filter Disposable, pleated MERV 7 (standard) or MERV 11 (optional)
Number and size − in. (mm) (12) 20 x 20 x 2 (508 x 508 x 51)
Electrical characteristics 208/230V, 460V or 575V − 60 hertz − 3 phase
NOTE − Net capacity includes evaporator blower motor heat deduction. Gross capacity does not include evaporator blower motor heat deduction.
1
Tested at conditions included in with ARI Standard 340/360; 95_F (35_C) outdoor air temperature and 80_F (27_C) db/67_F (19_C) wb entering evaporator air; minimum
external duct static pressure.
2
Integrated Part Load Value tested at 80_F (27_C) outdoor air temperature.
3
Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of
CAV motors furnished are shown. For VAV models and 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.
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