Johnson Controls (H, Engineering Manual

Page: 15 / 124

FEATURES
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1-5
Flexibility of Facility Design
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Height difference between the outdoor units and indoor units and the height difference between the indoor
units are changed as shown below.
Height Difference between
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Outdoor Unit is Higher
< 164.1 ft
(< 50m)
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< 98.4 ft
(< 30m)
NOTES:
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restricted.
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additional refrigerant charge (table below)).
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, the connectable indoor units number
should be less than the recommended number.
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sure the height difference of indoor units is within 49.2ft (15m).
Height Difference of
Indoor Units: 98.4ft (30m)
7 3
Piping Length between
Branch from Indoor Unit:
Max. 12.2ft (40m) <98.4ft (30m)>
7
2
Outdoor Units
Max. Piping Length: 32.8ft (10m)
Height Difference: 3.3ft (0.1m)
Height Difference
between Outdoor Units and Indoor Units:
• O.U. is Higher: 164.1ft (50m)
• O.U. is Lower: 131.2ft (40m)
Piping Length between Outdoor Unit and Indoor Unit:
Max. Piping Length: 541.4ft (165m)
Max. Total Piping Length: 1640.4ft (500m) <984.3ft (300m)>
7
1,
7
2
Piping Length of First Branch from
Each Indoor Unit:
Max. 295.3ft (90m) <131.2ft (40m)>
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Max. Additional Refrigerant Charge: lbs (kg) 61.7 (28) 112.5 (51) 138.9 (63)
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No limit for the number of main piping branches is realized.
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Indoor Unit
Main Branch
a b
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e
f
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