036-21083-007-A-0404
Unitary Products Group
11
GUIDE SPECIFICATION
Furnish and install YORK Sunline air-cooled condensing
units or equivalent, suitable for ground or roof mounting.
Units shall have capacities and efficiencies as outlined in the
schedules shown on the plans and shall be installed in accor-
dance with all applicable national and local codes.
I. General
a.
Units shall be manufactured in a facility registered under
the ISO 9002 manufacturing quality standard.
b.
Units shall be CSA approved.
c.
Unit shall be packaged to allow outdoor storage.
d.
Hermetic compressors shall be covered by a five year
limited warranty.
e.
All other unit parts shall be covered by a full year limited
warranty.
II. Unit Cabinet
a.
Cabinet shall be constructed of 18 gauge, zinc-coated
steel, finished with a powder paint process capable of
withstanding a minimum of 500 salt spray hours accord-
ing to ASTM B117.
b.
Cabinet screws shall comply with the ASTM B117 salt
spray test for a minimum of 750 hours.
c.
Panels shall be removable for easy access to all internal
components during maintenance and service.
d.
Cabinet shall feature a separate access panel for the
controls so that unit airflow need not be disturbed during
servicing.
e.
Permanently attached base rails shall have 3-way fork lift
access and lifting holes for ease of installation.
III. Compressor
a.
Compressor shall be scroll compressors with integral
motor overload protection.
b.
Compressors for HCE090, 120 have crankcase heaters
to keep refrigerant from diluting the compressor oil in the
sump. Crankcase heater shall be field replaceable with-
out removal of the charge.
c.
Compressor shall be mounted on isolators to limit the
transmission of sound and vibration.
IV. Condenser and Fans
a.
Fan motors shall be single phase, direct-drive with pro-
peller-type condenser fans which discharge air vertically
upward.
b.
Units with more than one condenser fan motor shall be
wired to distribute the single phase motor loads across
the 3 phase power supply, thus minimizing phase imbal-
ance on multiple unit installations.
c.
Fan motors shall be totally enclosed with permanently
lubricated ball-bearings for longer wear during start and
stop cycles.
d.
Fan motors shall have inherent overload protection.
e.
Coil shall be constructed of rifled copper tubing mechan-
ically expanded and bonded to louvered aluminum fins.
Coil shall include an integral subcooler.
V. Refrigeration Components
a.
Refrigeration system contains both high and low pres-
sure cut-outs.
b.
Service valves to ease installation and recovery of refrig-
erant.
c.
External ports to accommodate gauge lines, allowing for
easy servicing of the unit.
d.
Each unit ships with a filter drier for field installation.
e.
Holding charge of R-22.
VI. Controls
a.
Each unit is equipped with 24 volt control circuit with ter-
minal blocks.
b.
Color-coded wiring for easy service and trouble shoot-
ing.
c.
Independent line break thermal protection for the con-
denser fans.
d.
5 minute anti-short cycle timer to protect the compressor
from frequent cycling.
e.
Unit safety lockouts which automatically reset from the
thermostat once the anti-short cycle timer is satisfied.
Safety lockouts will also generate a 24 volt signal to the "X"
terminal, allowing notification to the user via the thermostat
fault light (if present). These safety lockouts shall include:
• High refrigerant pressure.
• Low refrigerant pressure (low refrigerant pressure shall be
bypassed for the first 90 seconds of operation to eliminate
nuisance trips).
• Compressor motor protection to automatically shutdown
the unit in the event of motor overcurrent or excessive tem-
perature conditions. Unit shall automatically restart after
the line break protector cools.
• Low ambient operation down to 45°F (7°C) without a low
ambient kit. (Operation down to 0°F with the optional low
ambient kit.)
VII. Electrical
a.
Units shall be ______ volts, 3 phase, with a single power
point connection.
b.
Unit control circuit shall have a 24 volt transformer, sized
sufficiently to operate the indoor fan.
c.
All condenser fan motors and the secondary of each
transformer shall be grounded.
