74
YORK INTERNATIONAL
CONDENSER WATER PUMP
CONTACT/RUN STATUS OPTION
This option provides a dry contact which can be used to
turn on the condenser water pump, other device, or indi-
cate run status. The contact closes whenever one of the
compressors start.
Connections to this contact can be made on Terminals
21 and 22 of TB1 in the power panel. The location of
these terminals is shown in Fig. 29.
This option utilizes a second Relay Output Board and
associated wiring. The part number for the Field Mounted
Pump Control Kit is 471-01232-101. This kit is not re-
quired if a second Relay Output Board is already in-
stalled.
NOTE: Any inductive devices (con/actor/relay coil) con-
nected to these contacts must be suppressed
with YORK P/N 031-00808 supplied by others.
Otherwise, nuisance faults may occur.
EVAPORATOR WATER PUMP CONTACT OPTION
This option provides a dry contact which can be used to
turn on the evaporator water pump. The contact will be
closed by the micro before the micro brings a com-
pressor on. The micro will not bring a compressor on
until a RUN PERMISSIVE signal is established by a
flow switch contact closure. If no daily schedule is set
(all times = 00.00), the evaporator water pump contact
will transition as soon as a System Switch on the micro-
processor board is placed in the ON position.
If a daily schedule is programmed, the evaporator water
pump contacts will transition when the daily schedule
dictates.
If MANUAL OVERRIDE is selected, the evaporator water
pump contacts will immediately transition.
Connections to this contact can be made on Terminals
25 and 26 of TB1 in the power panel. The location of
these terminals is shown in Fig. 30.
If a power failure occurs which shuts the entire chiller
down, the contacts will not be allowed to close again
until 30 seconds after power is restored. This prevents
rapid cycling of the chilled water pump.
Both controls are included as part
of the PUMP CONTROL KIT
OPTIONS
This section is devoted to options which may be ordered or retrofitted to the unit. Listed below are the options which are
covered in this section.
1.
CONDENSER WATER PUMP / RUN STATUS CONTACT OPTION
2.
EVAPORATOR WATER PUMP CONTACT OPTION
3.
LOW AMBIENT ACCESSORY
4.
HOT GAS BYPASS (LOADMINDER) OPTION
5.
DISCHARGE PRESSURE READOUT OPTION
6.
HIGH AMBIENT OPTION
7.
LOCAL PRINTER OPTION
8.
OPTIONAL TAMPERPROOF ENCLOSURE (WIRE GRILLE)
9.
OPTIONAL DECORATIVE TAMPERPROOF ENCLOSURE (LOUVERED & WIRE GRILLE)
10.
OPTIONAL DECORATIVE TAMPERPROOF ENCLOSURE (LOUVERED)
11.
BAS INTERFACE OPTION (REMOTE RESET OPTION)
FIG. 29
CONDENSER WATER PUMP CONTACT
CONNECTION POINT
LD02183
Summary of Contents for YCAJ44HE8
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