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Installation Electrical
Connecting Module Power and
Control Wires
Connections are made at the primary module, which
typically contains the power distribution panel (or on
the tank and pump module, if so equipped).
W W A A R R N N I I N N G G
P P r r o o p p e e r r F F i i e e l l d d W W i i r r i i n n g g a a n n d d G G r r o o u u n n d d i i n n g g
R R e e q q u u i i r r e e d d ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w c c o o d d e e c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r
s s e e r r i i o o u u s s i i n n j j u u r r y y . .
A A l l l l f f i i e e l l d d w w i i r r i i n n g g M M U U S S T T b b e e p p e e r r f f o o r r m m e e d d b b y y q q u u a a l l i i f f i i e e d d
p p e e r r s s o o n n n n e e l l . . I I m m p p r r o o p p e e r r l l y y i i n n s s t t a a l l l l e e d d a a n n d d g g r r o o u u n n d d e e d d
f f i i e e l l d d w w i i r r i i n n g g p p o o s s e e s s F F I I R R E E a a n n d d E E L L E E C C T T R R O O C C U U T T I I O O N N
h h a a z z a a r r d d s s . . T T o o a a v v o o i i d d t t h h e e s s e e h h a a z z a a r r d d s s , , y y o o u u M M U U S S T T f f o o l l l l o o w w
r r e e q q u u i i r r e e m m e e n n t t s s f f o o r r f f i i e e l l d d w w i i r r i i n n g g i i n n s s t t a a l l l l a a t t i i o o n n a a n n d d
g g r r o o u u n n d d i i n n g g a a s s d d e e s s c c r r i i b b e e d d i i n n N N E E C C a a n n d d y y o o u u r r l l o o c c a a l l / /
s s t t a a t t e e / / n n a a t t i i o o n n a a l l e e l l e e c c t t r r i i c c a a l l c c o o d d e e s s . .
Chiller Module Main Power
Modular systems feature single-point power
connection from the utility service to the power
distribution panel on the primary module as standard.
Main power phases A, B, and C are connected to
terminals A, B, and C respectively from left to right.
Some systems have individual power supplied to each
module in lieu of single point power.
Phase Monitor Installation
The chiller is equipped with a phase monitor on the
power distribution panel. It communicates with the
primary microprocessor controller on the primary
module electrical and control panel via the ID8
terminal. Ensure that the wiring from the primary
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 is
designed to protect against under-voltage, voltage
imbalance, 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 red or blinks) 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
20
at the mounting socket. No further adjustment should
be required.
Power Interlock Switch
Some Manhattan™ Gen II Chiller systems are
optionally equipped with a panel-mounted disconnect
switch installed on the outside of the power
distribution panel. The disconnect switch must be
turned to the off position before the panel can be
opened for service.
W W A A R R N N I I N N G G
H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d
r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o
p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
Single Point Connections
For systems with single point power connections,
detach the power cable on each module by cutting the
wire tie installed for shipping.
1. Uncoil the power cable and snake it through each
module to reach the power distribution panel.
2. Feed the taped end of the cable through the round
opening on the extreme left of the power
distribution panel.
3. Remove the tape and connect and tighten the cable
ends to the breaker corresponding to the module
number being connected. (For example, connect
the cable for module #9 to the breaker labeled #9.)
4. Connect the green ground lead to the ground lug at
the base of the enclosure.
5. Do not secure the ground wire until all of the
ground wires are connected to the ground lug and
then each can be tightened.
6. After connection, secure all power cables with
standard wire ties.
Module Control Wiring
The primary controller communicates with the
secondary controller in each chiller module via a
communication circuit. Each secondary controller is
wired back to the Ethernet switch on the primary
microprocessor controller.
ARTC-SVX001B-EN
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