Unit Dimensions
12
The second form of heat is called latent heat. This is heat held by the moisture in the air. Removing
this moisture does not affect a thermometer. However, removing the latent heat in the air greatly increase
comfort. A properly sized unit removes both forms of heat, producing a comfortable conditions,
An oversized system cycles on and off quickly and does not properly remove humidify, producing
uncomfortable. The indoor and outdoor equipment combination should be matched by the manufacturer
There are several factors that installers must consider.
and based on engineering data.
conditioning requirements, the system must be properly installed. Proper installation with cerefully
distributed air through adequate duct work will provided a comfortable living space.
Central Air Conditioner Model: Heat Pump, 13SEER units
and humidity control depend on the correct balance between indoor load and outdoor unit capacity. High
Air conditioning requires a specified air flow. Each ton of air conditioning requires 400 cubic feet of air
per minute (400CFM/TON).
of 3°in the return duct and 4°in the supply duct. This can reduce the cooling capacity of an air
conditioning system by as much as 30%.This means a loss of almost one ton of cooling capacity from a
three ton system.
The air distribution system has the greatest effect. On the quality of the installation and the owner satisfaction,
The correct air quantity is critical for correct air conditioning system. Proper operation, efficiency, compressor life
performance and customer's satisfaction and can cause premature component failure.
Duct design and construction should be done with care. System performance can be lowered
dramatically through bad planning or workmanship. In cooling, a hot attic can cause a temperature gain
the duct system is totally in the responsibility of the contractor. These are numerous thchnical associations
Low indoor air flow reduces total capacity, and can causes coil icing. Improper air balance will affect system
and reference that recommend correct procedures.
indoor air flow reduces system dehumidification capacity, and can leave the space humid and uncomfoltable.
Table 6-1
Piston sizes and indoor fan speed:
Note: the piston is placed in the outdoor unit package box
Table 6-2 Piston size
W(inch[mm]) D(inch[mm]) H(inch[mm])
Unit 21 1/2[547] 21 1/2[547] 23 3/8[595]
Shipping 23[585] 23[585] 25[637]
Unit 21 1/2[547] 21 1/2[547] 26 7/8[683]
Shipping 23[585] 23[585] 28 1/2[725]
Unit 24 1/4[616] 24 1/4[616] 23 3/8[595]
Shipping 26 7/8[682] 26 7/8[682] 25[637]
Unit 24 1/4[616] 24 1/4[616] 26 7/8[683]
Shipping 26 7/8[682] 26 7/8[682] 28 1/2[725]
Unit 24 1/4[616] 24 1/4[616] 30 3/8[771]
Shipping 26 7/8[682] 26 7/8[682] 32[813]
HC36D2VAR
HC42D2VAR
Dimensions
HC18D2VAR
HC24D2VAR
HC30D2VAR
Capacity SEER CFM 80 85 90 95 100 105 110 115
HC18D2VAR HB2400VD1M2
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