Air Flow, Weights And Filter Sizes; General Operation; Table 1 Cooling Performance And Air Flow; Table 2 Return Air Filter Sizes - Industrial Climate Engineering ECUA90 Installation & Operation Manual

1.4 Weights and Filter Sizes
Complete electrical and performance specifications and dimensional drawings are in the Product Data
Sheet.
Model Number
Cooling BTUH
1
Rated Air Flow (CFM )
2
ESP @ Rated Conditions
3
Cooling rated at 95°F (35°C) outdoor and 80°F DB/67° WB (26.5°C DB/19.5°C WB) return air
1
CFM=Cubic Feet per Minute
2
ESP=External Static Pressure
3
Ratings are with no outside air. Performance will be affected by altitude.
Ratings are at 230 volts for 208/230 volt units ("C" models), 460 volts for "D" models, 380 volts for "E" models, 575 volts for "Z"
models. Derate performance by 17% for ACE (380v. 3ø, 50 Hz) models
Operation of units at a different voltage from that of the rating point will affect performance and air flow.
MODEL Description
Exterior Access Return Air Filter
ECUA90/120
Interior Access Return Air Filter
ECUA90/120
MODEL
ECUA90
ECUA120
1.5

General Operation

Refrigerant Cycle (Cooling Mode)
The air conditioners use R-410A refrigerant in a conventional vapor-compression refrigeration cycle to
transfer heat from air in an enclosed space to the outside. A motorized impeller assembly blows indoor
air across the evaporator. Cold liquid refrigerant passing through the evaporator is boiled into gas by
heat removed from the air. The warmed refrigerant gas enters the compressor where its temperature
and pressure are increased. The hot refrigerant gas condenses to liquid as heat is transferred to outdoor
air drawn across the condenser by the condenser fan. Liquid refrigerant is metered with a thermal
expansion valve (TXV) into the evaporator to repeat the cycle.
Heating Mode
A wall-mounted thermostat controls the heating cycle of models which incorporate resistance heating
elements. On a call for heat, the thermostat closes the heat relay to energize the indoor fan and the
resistance elements.
Table 1. Cooling Performance and Air Flow Ratings
INCHES
25" x 16" x 2"
15" x 20" x 2"
Table 2. Return Air Filter Sizes
Unit Weight
LBS KG
1,053 478.6
1,160 527.3
Table 3. Shipping Weights & Dimensions
ECUA90
90,000
3,500
0.30
MILLIMETERS PART NO.
635 x 406
80137
x 51
381 x 508
92365
x 51
Shipping
Weight
Height
LBS KG Inches
1,178 535.5 98
1,285 584.1 98
6
ECUA120
120,000
4,000
0.30
FILTERS PER UNIT
3
3
Shipping Dimensions
Width
MM Inches MM
2,489 56 1,422
2,489 56 1,422
ECU 12/2014 NEW
MERV RATING
8
8
Depth
Inches MM
42 1,067
48 1,219