York YHAU-CE, Installation Operation & Maintenance, Page: 29 / 136

JOHNSON CONTROLS
29
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
3
STRUCTURAL SUPPORT AND
INSTALLATION
Structural support of the unit must be provided for
maximum efficiency. Maintain adequate maintenance
space around the chiller-heater. Foundation bolts must
be installed in level concrete to secure the unit and pre-
vent shifting.
It is the customer's responsibility to furnish the founda-
tion bolts, nuts and washers. Rubber vibration isolator
pads must be fitted to the unit base before installation.
See
Figure 7 on page 32
. The tolerance for leveling
is 1 inch in 1,000 inches or 1 mm in 1,000 mm.
Waterproof the floor on which the unit will
be installed in case of future leaks.
Apply thermal insulation to the chiller-heater. See the
installation instructions and Table 1 on page 35 . Be
sure to install insulation on the exhaust gas duct outer
cover to prevent burns or a fire. A barrier fence to pre-
vent access may be used instead.
Dimensions can be found in
Table 5 on page 47 and
Table 6 on page 47. For the external dimensions of
the unit and foundation, see the full view of the unit
and the foundation drawing.
For serviceability and maintenance, leave a minimum
of 1,000 mm space on all sides of the chiller-heater. To
ensure there is adequate clearance for tube removal,
the space at the end should equal 1.25 x the length of
the unit.
INDOOR AND OUTDOOR INSTALLATION
This chiller-heater is designed to be used indoors. Ex-
posure to the elements may compromise the integrity
of the thermal insulation. The minimum allowable
temperature for outdoor installation is 0°C, provided
that the chiller-heater includes the cold ambient op-
tion.
Outdoor installations will be considered on a case-by-
case basis by a Johnson Controls Service Represen-
tative. Proper instruction for installation will be pro-
vided at that time.
When installing the unit indoors, have a specialized
company provide a suitable flue or smokestack, as well
as air supply and exhaust equipment. Insufficient air
supply or improper exhaust can cause oxygen starva-
tion and a fire. The interlock of the control panel should
be set up with a supply or 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. Be sure to fasten them
tightly to the appropriate terminals. Loose fitting cables
can cause the terminals to heat up. A fire or electrical
shock may occur as a result. Electrical work must be
supervised or completed by a Johnson Controls Service
Representative.
A ground fault (earth leakage) circuit
breaker is NOT installed for this chiller-
-heater unit. Be sure to install an adequate
ground fault circuit breaker at the pri-
mary side of the chiller-heater unit.
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 may be used on a temporary basis to dehu-
midify the control panel. Once the moisture is absorbed,
be sure to remove it. If you do not, the silica gel may
corrode the electrical parts of the control panel.