York YCAS Installation Operation & Maintenance Download

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131

YORK INTERNATIONAL

FORM 201.19-NM6 (804)

5. Program the required op er at ing val ues into the

mi cro for cut-outs, safe ties, etc. and record them
in the chart be low. See Page 178 for details.

Record programmed values in the chart below.

PROGRAMMED VALUES

Display Language =_____________________________

Discharge Press Cutout = _______________ PSIG (kPa)

Discharge Press Unload = _______________ PSIG (kPa)

Suction Press Cutout = _________________ PSIG (kPa)

High Amb Cutout = ________________________ °F (°C)

Low Amb Cutout = _________________________ °F (°C)

Leaving Chilled Liquid Temp Cutout = __________ °F (°C)

High Motor Current Unload = _________________ % FLA

Anti-Recycle Time = ________________________ Secs

Local / Remote Mode = __________________________

Display Units = _ ___________________________

Lead / Lag Control = ____________________________

Power Failure Restart = _________________________

Suction Superheat Setpoint = _______________ °F (°C)

6. Program the Chilled Liquid Setpoint/Range and

record:

Setpoint = __________________ °F (°C)

Range = +/- ________________ °F (°C)

Keep in mind that the setpoint temperature dis-

played by the micro should equal the de sired
leav ing wa ter tem per a ture.

7. Assure that the CLK jumper J18 on the Mi cro -

pro ces sor Board is in the ON position (Top 2
pins).

8. Set the Time and Date.

9. Program the Daily Schedule start and stop

times.

10.Check the Factory Service Mode programming

values, (See Section 8.10) assure they are cor-
rect, and record the values:

Refrigerant Type = _____________ R22 Chiller Type =

Unit Type = __________________________________

Heat Recovery = _______________________________

Sys #1 100% FLA = _________________________Amps

Sys #2 100% FLA = _________________________Amps

Sys #3 100% FLA = _________________________Amps

Sys #4 100% FLA = _________________________Amps

16.

Assure that the Flow Switch is properly in-
stalled, wired correctly, and working.

17. Assure bolts through compressor feet to bottom

frame rails are removed.

PANEL CHECKS

(Power ON – Both System Switches “OFF”)

1. Apply 3-phase power and verify its val ue (See

Fig. 9 and 10 pages 34 and 35).

2. Apply 115VAC and verify its value on the ter-

mi nal block in the lower left of the Power Pan el.
Make the mea sure ment between ter mi nals 5 and
2 (See Fig. 14, page 39). The voltage should be
/- 10%.

Assure the heaters on each compressor are on.
Al low the compressor heaters to remain on a
min i mum of 24 hours before start- up. This is
im por tant to as sure that no re frig er ant is in
the com pres sor oil at start-up!

4. Program the dip switches on the mi cro pro ces sor

board for the desired operating re quire ments. See
Fig. 78, Page 159. OPEN = Left side of switch
pushed down. CLOSED = Right side of switch
pushed down.

SWITCH

SWITCH "OPEN"

SETTING

SWITCH "CLOSED"

SETTING

Water Cooling

Glycol Cooling

Standard Ambient

Control

Low Ambient Control

Refrigerant R-407C

Refrigerant R-22