York YLUA0248 Series, Установка, эксплуатация и обслуживание

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JOHNSON CONTROLS
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SECTION 4 – INSTALLATION
FORM 150.73-NM2
ISSUE DATE: 09/07/2020
4
To ensure warranty coverage, this equip-
ment must be commissioned and serviced
by an authorized Johnson Controls
service mechanic or a qualified service
person experienced in equipment instal-
lation. Installation must comply with all
applicable codes, particularly in regard to
electrical wiring and other safety elements
such as relief valves, HP cutout settings,
design working pressures, and ventilation
requirements consistent with the amount
and type of refrigerant charge.
Lethal voltages exist within the control
panels. Before servicing, open and tag
all disconnect switches.
INSTALLATION CHECKLIST
The following items, 1 through 5, must be checked be-
fore placing the units in operation.
1. Inspect the unit for shipping damage.
2. Rig unit using spreader bars.
3. Open the unit only to install water piping system.
Do not remove protective covers from water con-
nections until piping is ready for attachment. Check
water piping to ensure cleanliness.
4. Pipe unit using good piping practice (Refer to
ASHRAE handbook section 215 and 195).
5. Check to see that the unit is installed and operated
within limitations (Refer to LIMITATIONS).
The following pages outline detailed procedures to be
followed to install and start-up the unit.
HANDLING
These units are shipped as completely assembled units
containing full operating charge, and care should be
taken to avoid damage due to rough handling.
LOCATION AND CLEARANCES
These units are designed for outdoor installations on
ground level, rooftop, or beside a building. Location
should be selected for minimum sun exposure and to
insure adequate supply of fresh air for the condenser.
SECTION 4 – INSTALLATION
The units must be installed with sufficient clearances
for air entrance to the condenser coil, for air discharge
away from the condenser, and for servicing access.
In installations where winter operation is intended and
snow accumulations are expected, additional height
must be provided to ensure normal condenser air flow.
Clearances are listed under Notes in the
Dimensions
(English) section.
Foundation
The unit should be mounted on a flat and level founda-
tion, floor, or rooftop capable of supporting the entire
operating weight of the equipment. See Physical Data
(English) for operating weight. If the unit is elevated
beyond the normal reach of service personnel, a suit-
able catwalk must be capable of supporting service
personnel, their equipment, and the compressors.
Ground Level Locations
It is important that the units be installed on a sub-
stantial base that will not settle. A one piece concrete
slab with footers extended below the frost line is
highly recommended. Additionally, the slab should
not be tied to the main building foundations as noise
and vibration may be transmitted. Mounting holes are
provided in the steel channel for bolting the unit to its
foundation. See Dimensions (English).
For ground level installations, precautions should be
taken to protect the unit from tampering by or injury to
unauthorized persons. Screws and/or latches on access
panels will prevent casual tampering. However, further
safety precautions such as a fenced-in enclosure or
locking devices on the panels may be advisable.
Rooftop Locations
Choose a spot with adequate structural strength to
safely support the entire weight of the unit and service
personnel. Care must be taken not to damage the roof.
Consult the building contractor or architect if the roof is
bonded. Roof installations should have wooden beams
(treated to reduce deterioration), cork, rubber, or vibra-
tion isolators under the base to minimize vibration.