Johnson Controls YVAHP072B31S, Service Manual

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Service Manual
i
Temperature
Maximum Minimum
Cooling
Operation
Indoor 89
o
F DB/73
o
F WB (32
o
C DB/23
o
C WB) 69
o
F DB/59
o
F WB (21
o
C DB/15
o
C WB)
Outdoor 118
o
F DB (48
o
C DB)
*1), *2)
14
o
F DB (-10
o
C DB)
*3), *4)
Heating
Operation
Indoor 80
o
F DB (27
o
C DB) 59
o
F DB ( 15
o
C DB)
Outdoor 59
o
F WB (15
o
C WB)
*5)
-4
o
F WB (-20
o
C WB)
*6)
DB: Dry Bulb, WB: Wet Bulb
*1) When the outdoor air temperature is 100
o
F DB (38
o
C DB) or more and the outdoor unit operation capacity
ratio is 100% or more, the outdoor unit will be Thermo-OFF to protect the compressor from failure.
*2) When the outdoor air temperature is 109
o
F (43
o
C) or more during the outdoor unit cooling operation, the
maximum connectable indoor unit capacity ratio is 100%.
*3) When the outdoor air temperature is 23
o
F (-5
o
C) or less during the outdoor unit cooling operation, the
minimum connectable indoor unit capacity is 18,000 Btu/h.
In this case, install the snow protection hood (optional).
*4) When operating the outdoor unit under the low cooling load conditions and in the low outdoor air
temperature, (applox. 50
o
F DB (10
o
C DB) or less), the indoor unit will be Thermo-OFF to prevent the heat
exchanger of the indoor unit from being frosted.
*5) When operating the outdoor unit under the low heating load conditions and the outdoor temperature is
59
o
F DB (15
o
C DB) or more, the outdoor unit will be Thermo-OFF to protect the compressor from failure.
*6) Operation in the outdoor temperature of 5~-4
o
F WB (-15~20
o
C WB) is assumed to limited conditions such
as start-up in early morning.
Long time operation in this condition may shorten the life of the compressor.
Important Notice
Ɣ Johnson Controls Inc. pursues a policy of continuing improvement in design and performance in its
products. As such, Johnson Controls Inc. reserves the right to make changes at any time without prior
notice.
Ɣ Johnson Controls Inc. cannot anticipate every possible circumstance that might involve a potential
hazard.
Ɣ This heat pump air conditioning unit is designed for standard air conditioning applications only. Do not
use this unit for anything other than the purposes for which it was intended for.
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and electrical codes. The following standards may be applicable, if local regulations are not available.
International Organization for Standardization: (ISO 5149 or European Standard, EN 378). No part of
this manual may be reproduced in any way without the expressed written consent of Johnson Controls
Inc.
Ɣ This heat pump air conditioning unit will be operated and serviced in the United States of America and
comes with a full complement of the appropriate Safety, Danger, and Caution, warnings.
Ɣ If you have questions, please contact your distributor or dealer.
Ɣ This manual provides common descriptions, basic and advanced information to maintain and service
this heat pump air conditioning unit which you operate as well for other models.
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performance and long life, operate this unit within the range limits according to the table below.
Ɣ This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.