Contactor Pro Owner's Manual

Installation Parameters
These panels must be installed in accordance with local building
codes, the National Electrical Code, or Canadian Electrical Code by
qualified persons.
Disconnect power from all circuits prior to making any connections.
Do not energize circuits until all connections are made and all
ProMelt mats/cables are fully installed and covered as required.
Read and follow the installation instructions for both the ProMelt
snow melt mat/cable and the ProMelt sensor for additional information.
Mount the panel indoors on a wall or equivalent. Do not place in a
confined air space where heat is not able to escape, such as a
small closet.
Properly secure the panel to the wall using the mounting
holes provided.
Wire the panel according to the provided schematics.
A GFEP (Ground Fault Equipment Protection) type circuit breaker must
be used to protect each ProMelt circuit. Size circuits for 125% of
the load.
This panel must be bonded to ground, as well as all conduit, junction
boxes and other associated items per local code.
For detailed product installation and electrical wiring details,
see the Contactor Pro installation sheet or the ProMelt
Installation Manual.
277 VAC
Circuit
Breaker
Panel
Installation Notes:
CABLE TO SENSOR
Class 2 control circuit.
Use 4-conductor shielded, outdoor
rated wire.
See sensor manual for minimum wire
gauge and maximum wire lengths.
120 VAC
Control
Circuit
Branch circuit protection provided by
installer. Maximum 70A GFEP type.
N L N L N L
CP
Contactor
Panel
120 / 208 / 240 VAC
Circuit
Breaker
Panel
N / L1
L2
L1 L2
T2T1
L2
L1 L2
T2T1
24VAC
Common
PM
CP
Contactor
Panel
C1
C4
BLU
BRN YELYEL
PM-224
or PM-824
Sensor
Junction
Box
GRN
120
COM
N / L1
208
240
120
COM
208
240
PM-HSC5
Sensor
ProMelt
Transformer Notes:
Connect primary to quick-connect
terminals L1 and L2 on contactor C1.
CAUTION: Ensure voltage lead
matches supply voltage to C1.
Improper connection may cause
damage.
Branch circuit protection provided by
installer. Maximum 70A GFEP type.
L1 L2
(Optional)
CP Contactor Panel used as an
"extension" panel
X1
X2
24VAC
Common
PM
X1
X2
To optional
additional
CP-Series
panels
rev 071712 Watts Radiant [phone]
WIRING
Wire per NEC or CEC and local codes.
Circuit size 125% of load.
Field wiring: Use Copper Conductors
Only, 75C, 20 lb-in (2.3 Nm)
RED BLK ORGBLU
24VAC
Common
PM
X1
X2
T2T1
L1 L2
T2T1
C1
C4
Same connections as 120 / 208 / 240 VAC
X1 & X2 are dry contact, N.O.
ES-ST-ProMelt-Contactor Pro 1233 © 2012 Watts Radiant
USA: Springfield, MO • Tel. [phone] • Fax: [phone] • www.suntouch.com
Canada: Burlington, ONT. • Tel. [phone] • Fax: [phone] • www.suntouch.com
A Watts Water Technologies Company