York EX Series, Installation, Operation & Maintenance Instructions Manual

Page: 22 / 176

JOHNSON CONTROLS
22
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
INSPECTION
The unit must be inspected prior to customer use by a
Johnson Controls Service representative. All damage
or possible damage must be reported to the transpor-
tation company. For further details, see
SECTION 5 -
COMMISSIONING.
INSPECTION WINDOW
The inspection window of the exhaust gas duct or
chimney must not be turned to the aisle side in case the
exhaust gas duct or chimney has a problem from a unit
failure or burner combustion deterioration. If it must be
turned to the aisle side, install a guard fence around the
inspection window.
INSTALLATION GUIDELINES
Gas pipe fittings must be installed by a qualified con-
tractor. Defective gas piping can cause an oxygen-
deficient accident or a fire.
When evacuating the nitrogen charge (from the fac-
tory), be sure the area is properly ventilated. Failure to
do this could result in suffocation.
When exhaust gas is emitted from the smokestack, it
is critical that it does not mix with the cooling water
in the cooling tower. This can lower the quality of the
cooling water, resulting in corrosion and scale forma-
tion. As sulfides and carbides contained in the exhaust
gas are condensed, low temperature corrosion occurs,
resulting in tube perforations. This can cause compli-
cations with the chiller-heater, and may result in a seri-
ous accident. The smokestack and cooling tower must
be placed at least 5 meters apart. Wherever possible,
the smokestack should be positioned downwind of the
cooling tower, with regards to prevailing winds.
STRUCTURAL SUPPORT AND INSTALLATION
Structural support of the unit must be provided as in-
dicated for maximum efficiency. Maintain adequate
maintenance space around the chiller-heater so work
can be safely performed. Foundation bolts should 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
as shown in
Figure 4 on page 26
. 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. Refer to
the installation instructions and see Table 2 on page
29
. Be sure to install insulation or a fence on the
exhaust gas duct outer cover to prevent burns or a fire.
Dimensions can be found in
Table 5 on page 32 and
Table 6 on page 32 . 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 ade-
quate clearance for tube removal, the space at the end
should equal 1.25 x the length of the unit. See Table 5
on page 32 and Table 6 on page 32 .