Johnson Controls HIDH018B21S, Engineering Manual

Page: 22 / 668

FEATURES
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This wide operation range enables cooling even in winter in buildings with high internal heat gains resulting
from lighting, people and machines, particularly in areas such as shops, lecture rooms, and data processing
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can also be accomplished.
Temperature
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Cooling
Operation
Indoor 89
o
)'%
o
F WB (32
o
&'%
o
C WB) 69
o
)'%
o
F WB (21
o
&'%
o
C WB)
Outdoor 118
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)'%
o
&'% 7
1),
7
2)
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&'% 7
3),
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Operation
Indoor 80
o
)'% (27
o
&'% 59
o
)'% ( 15
o
&'%
Outdoor 59
o
F WB (15
o
C WB) 7
5)
o
F WB (-20
o
C WB) 7
6)
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1) When the outdoor air temperature is 100
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ratio is 100% or more, the outdoor unit will function as Thermo-OFF to protect the compressor from failure.
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2) When the outdoor air temperature is 109
o
)
o
C) or more during the outdoor unit cooling operation, the
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7 3) When the outdoor air temperature is 23
o
F (-5
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C) or less during the outdoor unit cooling operation, the
minimum connectable indoor unit capacity is 18,000 Btu/h.
In this instance, installing the snow protection hood (optional part) is required.
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7 5) When operating the outdoor unit under the low heating load conditions and the outdoor temperature is
59
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failure.
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6) Operation in outdoor temperatures between 5 and
o
F WB (-15~20
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C WB) is assumed to limit conditions
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compressor.
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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
c
e
f
d
Cooling Operation
90/74(32/23) 70/59(21/15)
Indoor Air Inlet Temperature o F DB/WB( o C DB/WB)
Outdoor Air Temperature
o
F DB (
o
C DB)
14(-10)
(
/
3)
50(10)
118(48)
(
/
2)
Heating Operation
80(27) -9.5(15)
Indoor Air Inlet Temperature o F DB ( o C DB)
Outdoor Air Temperature
o
F WB (
o
C WB)
-4(-20)
5(-15)
59(15)
Continuous Operation
Working Range (
/
1)(
/
4)
Operation
Working Range (
/
6)
Continuous Operation
Working Range (
/
5)