689670-BIM-A-0311
24 Johnson Controls Unitary Products
Table 9: Physical Data
ZU-A3 thru -A5 Single Stage Gas Physical Data
Component
Models
ZU-A3 ZU-A4 ZU-A5
Nominal Tonnage 3.0 4.0 5.0
ARI COOLING PERFORMANCE
Gross Capacity @ ARI A point (MBh) 37000 50000 61000
ARI net capacity (MBh) 36000 48000 58000
EER 11.8 11.8 11.8
SEER 14 14 14
IPLV ---
Nominal CFM 1200 1600 2000
System power (KW) 3.05 4.07 4.90
Refrigerant type R-410A R-410A R-410A
Refrigerant charge (lb-oz)
System 1 7-4 6-14 7-12
System 2 ---
ARI HEATING PERFORMANCE
Heating model A06 A08 A11 A06 A08 A11 A08 A11 A16
Heat input (K Btu) 60 80 120 60 80 120 80 120 160
Heat output (K Btu) 49 65 97 49 65 97 65 97 129
AFUE % - - - - - -
Steady state efficiency (%) 81.5 81 81 81.5 81 81 81 81 80.5
No. burners 446446468
No. stages 1 1 1 1 1 1 1 1 1
Temperature Rise Range (ºF) 20-50°F 25-65°F 50-80°F 20-50°F 25-65°F 40-70°F 25-65°F 35-65°F 45-75°F
Gas Limit Setting (ºF) 235°F 200°F 255°F 235°F 200°F 255°F 200°F 245°F 240°F
Gas piping connection (in.) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
DIMENSIONS (inches)
Length 89 89 89
Width 595959
Height 42 42 42
OPERATING WT. (lbs.) 723 763 864
COMPRESSORS
Type Recip Recip Recip
Quantity 1 1 1
Unit Capacity Steps (%) 100 100 100
CONDENSER COIL DATA
Face area (Sq. Ft.) 11.9 18.5 12.1
Rows 111
Fins per inch 23 23 23
Tube diameter (in./MM) 1/25 .71/18 .71/18
Circuitry Type 2-pass Microchannel 2-pass Microchannel 2-pass Microchannel
EVAPORATOR COIL DATA
Face area (Sq. Ft.) 8 8 10.6
Rows 333
Fins per inch 15 15 15
Tube diameter 0.375 0.375 0.375
Refrigerant control TXV TXV TXV
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