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Installation Electrical
Wiring and Piping
Modules must be installed in accordance with the
manufacturer's recommendations where shown on the
drawings and other installation documents.
Each PolyTherm Chiller/Heater module is shipped
individually for field assembly. Field assembly of a
PolyTherm Chiller/Heater system consists of the following
minimum steps:
1. Connect chilled fluid/heating fluid piping with factory
supplied roll grooved connections.
2. Insulate roll grooved connections after assembly.
3. Connect factory-supplied power supply wiring
harnesses to the power distribution panel. Install wires
to the proper terminals for proper phasing. The panel
is wired for A, B, C phase right-to-left in the power
distribution panel. Each wire on the wire harness is
identified as to its respective phase.
4. Connect each module microprocessor to the Ethernet
switch to form the local communication network.
Ethernet cable Cat-5e must be used for all
communication connections.
Connecting Module Power
and Control Wires
Connections are made at the master module, which
typically contains the power distribution panel.
Labeled control and communication cables are coiled
inside each module and are connected to an Ethernet
switch. The Ethernet cable tuns from the switch to each
module's microprocessor controller at the J30 connector.
Important:
Electrical Hazards: Read before installing!
This equipment must be installed by
qualified personnel in accordance with all
local and national codes. An earth ground
lug is provided on the cabinet exterior for
proper grounding according to national
electrical codes. An earth ground is
necessary to ensure personnel safety to
prevent electrical hazards around this
equipment. Read and follow installation
instructions for proper operation.
This unit is equipped with a flow switch. The chiller/heater
will not run unless the pump is circulating water through
the system.
Service Access
Compressors, filter-strainers, and liquid line shutoff valves
are accessible on each side or end of the unit.
22
Chiller/Heater Module Main Power
Modular systems feature single-point power connection
from the utility service to the power distribution panel on
the master module as standard. Main power phases A, B,
and C are connected to terminals A, B, and C respectively
from left to right. (Some custom systems may have
individual power supplied to each module in lieu of single
point power.)
Module Control Wiring
The client controller communicates with the server
controller in each chiller module via a communication
circuit. Each server controller is wired back to the Ethernet
switch on the client microprocessor controller. See figure
below.
Figure 7.
Typical controller network
Phase Monitor Installation
The chiller/heater is equipped with a phase monitor on the
power distribution panel. It communicates with the master
microprocessor controller in the master module electrical
and control panel via the id9 terminal. Ensure that the
wiring from the master microprocessor controller and
terminal blocks to the phase monitor are connected and
secure.
The phase monitor continuously monitors each of the
three phases. The microprocessor receives input from the
phase monitor indicating whether the voltage is within
acceptable values. The phase monitor design protects
against under-voltage, voltage unbalance, phase loss, and
phase reversal.
Set voltage adjustment knob at the desired operating line
voltage for the equipment. This adjustment automatically
sets the under-voltage trip point. Check the phase monitor
after initial startup. If it fails to energize, (the LED glows or
blinks red) check the wiring of all three phases, voltage,
and phase sequence. If phase sequence is incorrect, the
LED flashes green/red. To correct this, swap any two line
voltage connections at the mounting socket. No further
adjustment should be required.
ARTC-SVX005A-EN
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