40 RTAC-SVX002A-EN
Tab. IV-03 – Pump Relay Operation
Relay 1 Terminals J2 -12,11,10: Alarm
Relay 2 Terminals J2 - 9,8,7: Chiller Running
Relay 3 Terminals J2-6,5,4: Maximum Capacity (software 18.0 or later)
Relay 4 Terminals J2-3,2,1: Chiller Limit
If any of the Alarm/Status relays are
used, provide electrical power, 115 VAC
with fused-disconnect to the panel and
wire through the appropriate relays
(terminals on 1U12 (EUR=A4-5)).
Provide wiring (switched hot, neutral,
and ground connections) to the remote
annunciation devices. Do not use
power from the chiller’s control panel
transformer to power these remote
devices. Refer to the eld diagrams
which are shipped with the unit.
Low Voltage Wiring
The remote devices described below
require low voltage wiring. All wiring to
and from these remote input devices
to the Control Panel must be made with
shielded, twisted pair conductors. Be
sure to ground the shielding only at the
panel.
To prevent control malfunctions, do not
run low voltage wiring (<30 V) in conduit
with conductors carrying more than 30
volts.
Emergency Stop
CH530 provides auxiliary control for a
customer specied/installed latching
trip out. When this customer-furnished
remote contact 5K14 is provided,
the chiller will run normally when the
contact is closed. When the contact
opens, the unit will trip on a manually
resettable diagnostic. This condition
requires manual reset at the chiller
switch on the front of the control panel.
Connect low voltage leads to terminal
strip locations on 1U4. Refer to the eld
diagrams that are shipped with the unit.
Installation Electrical
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