Indoor And Outdoor Installation; Precautions For Use - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017

INDOOR AND OUTDOOR INSTALLATION

This chiller-heater is designed to be used indoors. Ex-
posure to the elements can compromise the integrity of
the thermal insulation. Minimum allowable tempera-
ture for outdoor installation is 0°C, provided that the
chiller-heater includes the cold ambient option. Out-
door installations will be considered on a case-by-case
basis by a Johnson Controls Service Representative
and proper instruction for installation will be provided
at that time.
When installing the unit indoors, have a specialized
company provide a suitable flue/smokestack and air
supply/exhaust equipment. Insufficient air supply or
improper exhaust can cause oxygen starvation and a
fire. The interlock of the control panel should be set up
with a supply/exhaust fan to create a proper draft.
Do not install a chimney near the air
supply.
ELECTRICAL
The electrical work must be performed in accordance
with the wiring diagrams, delivery specifications, and
technical standards for electrical equipment found in
SECTION 4 - TECHNICAL DATA. Use the specified
cables to complete the wiring, and fasten them to the
according terminals securely. Loose fitting cables can
cause the terminals to heat up, resulting in fire or elec-
trical shock. Electrical work must be supervised or
completed by a Johnson Controls Service Representa-
tive.
A ground fault (earth leakage) circuit
breaker is not installed for this chiller
-heater unit. Install an adequate ground
fault circuit breaker at the primary side
of the chiller-heater unit.
JOHNSON CONTROLS
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY

PRECAUTIONS FOR USE

Ventilate the storage area as much as possible to keep
the humidity low. Avoid storing the unit in an area
where the humidity is 95%RH or higher, and the tem-
perature is 40°C (104°F) or higher. For more informa-
tion about long term-storage, refer to Long-term Stor-
age Requirements (Form 50.20-NM1) and Long-term
Storage Checklist (Form 50.20-CL4).
Silica gel can be used on a temporary basis to dehu-
midify the control panel, but should be removed once
the moisture is absorbed. Otherwise, the silica gel can
corrode the electrical parts of the control panel.
Do not allow negative pressure or any devices that cre-
ate negative pressure to operate in the area around the
chiller-heater. This may cause incomplete combustion,
resulting in gas inhalation and hypoxia.
To prevent injuries, do not put a finger, a rod, or any-
thing else into any rotary parts of the vacuum pump.
A caution label for a rotating object is pasted around the
belt cover of the vacuum pump. When replacing the oil
in the vacuum pump, belt, or performing maintenance
work, stop the chiller-heater and be sure to turn off the
main circuit breaker (MCB1) and lockout/tagout the
unit. If this is not done, the vacuum pump could start
abruptly and cause injury or damage to the unit.
Do not place anything heavy on the machine or its con-
trol panel; it may fall and injure a worker.
Do not climb up the unit without safety harnessing.
Contact your local Johnson Controls service office
for inspection and maintenance of the unit. Improper
inspection and maintenance can not only cause a ma-
chine problem but also injure workers.
Keep the chilled/hot water and cooling water under the
maximum usage pressure. If they exceed the maximum
usage pressure, they may spout or leak and may cause
an electric leak and a burn.
Do not change the set values of the safety devices and
protective devices. Operation with incorrect set values
can cause a problem.
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