Watts Promelt contactor pro cp-50 Instruction Manual

the PM series sensor to the terminal block terminals 24VAC, COMMON,

and PM and also to the grounding bar. This will be a Class 2, 24 VAC

circuit. See "Terminal Block Wire Insertion Detail" on reverse.

5. Make wire connection between the contactor T1 and T2 terminals and

the ProMelt mats/cables.

Wiring CP series panels to be "Extension Panels".

A CP series panel can be used in conjunction with another CP series

panel to serve as an "extension panel". Follow the steps below for

proper installation:

1. Provide 120, 208, 240, or 277 VAC circuits to the panel contactor(s)

L1 and L2 terminals as required by the rating of the ProMelt snow

melting mats/cables connected to this circuit.

2. For 120, 208, and 240 VAC systems, the COM lead from the transformer

comes prewired to contactor C1 terminals L1. Connect the transformer

lead wire matching the contactor voltage supplied to C1 terminal L2.

Please see transformer color chart below.

3. Use a 2-conductor cable to make connections between terminals

24VAC and PM in the "extension" panel and terminals X1 and X2 in the

"main" CP series panel.. This will be a Class 2, 24 VAC circuit.

4. Make wire connection between the contactor T1 and T2 terminals and

the ProMelt mats/cables.

Note: Do not connect a sensor to the "extension" panel. The sensor

connected to the "main" panel will operate both panels.

Instructions for Installing ProMelt

Contactor Pro Relay Panels

For ProMelt CP-50, CP-100, and CP-200 Panels

The CP-50, CP-100, and CP-200 are turn-key panels for activating a

ProMelt snow melting system when used in conjunction with the ProMelt

series of controls. They allow simple connection from the circuit breaker

panel and have a manual override timer and heating indicator. Any CP

series panel can be used as an "extension" panel that connects to another

CP series panel and allows additional circuits to be controlled.

The ProMelt Contactor Pro Relay Panel is available in three configurations.

CP-50 (single contactor), CP-100 (dual contactors), and CP-200 (quad con-

tactors).

Installation

General

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 con-

ﬁned 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.

Wiring CP series panels

1. Provide 120, 208, 240, or 277 VAC circuits to the panel contactor(s)

L1 and L2 terminals as required by the rating of the ProMelt snow

melting mats/cables connected to this circuit. As shown in the wiring

schematics, the panel draws internal power from Contactor C1

terminals, so make sure power is supplied to this contactor.

2. For 120, 208, and 240 VAC systems, the COM lead from the transformer

comes prewired to contactor C1 terminal L1. Connect the transformer

lead wire matching the contactor voltage supplied to C1 terminal L2.

Please see transformer color chart, below right.

3. For 277 VAC systems, a separate 120 VAC circuit will need to be

supplied to the transformer 120 VAC and COM lead wires directly. This

may be a standard 15 A or 20 A circuit.

4. Use outdoor rated 4-conductor cable to make connections between

this panel and the sensor selected. See the wiring schematic and

instructions provided with the sensor for proper connections. Connect

Control Descriptions

Control No. Contactors Max. Amp Load

Contactor Pro CP-50 1 50

Contactor Pro CP-100 2 100

Contactor Pro CP-200 4 200

!CAUTION: Incorrect voltage supplied to the transformer

may cause damage, ﬁre, or shock.

IS-WR-PM-Contactor-Pro-Panels

Transformer Colors

Primary Voltage Lead Colors

120 Volts Black & White

208 Volts Black & Red

240 Volts Black & Orange

*277 Volts No Transformer Connections

See "Wiring CP series panels" Section, Step 3 for 277VAC connections.

Operation

Once all wiring connections have been completed, the sensor and ProMelt

mats/cables have been fully installed, and any inspections made as

required per local code, energize the circuit breaker(s) supplying the panel.

Automatic Operation

This is the recommended mode of operation. The sensor will activate

the panel, energize the connected ProMelt mats/cables indicated by the

"Heating On" light on the front of the panel.

Manual Operation

This mode may be used to brieﬂy test the system or temporarily

override the sensor control to complete melting or drying of a snow

melted area. If this is required often to help complete the snow melting

of an area, it is recommended to adjust the sensor control or consult your

system designers for possible improved automatic sensing and control.

Turn the Timer to the desired time. This overrides the sensor and

activates the panel, energizing the connected ProMelt mats/cables,

shown by the "Heating On" light.

Do not manually energize the ProMelt mats/cables with outdoor

temperatures above 68°F (20ºC) except for a brief test up to 10

minutes in duration. Damage to the mats/cables or slab/surface

materials may result.

CP series of controls can be used directly with any ProMelt cable or mat system. Power is connected directly to each contactor in the control.

Each ProMelt system can be used with a wide variety of moisture/precipitation sensors, including the following:

– Slab Mounted: PM-HSC5

– Pole Mounted: PM-224 and PM-824

Each sensor option is designed to operate a single system. Use a dedicated sensor and CP Control group for each snow melt zone.

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

Contactor

Panel

120 / 208 / 240 VAC

Circuit

Breaker

Panel

N / L1 L2

L1 L2

T2T1

L1 L2

T2T1

24VAC

Common

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

24VAC

Common

To optional

additional

CP-Series

panels

rev 071712 Watts Radiant (800) 276-2419

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

T2T1

L1 L2

T2T1

C1 C4

Same connections as 120 / 208 / 240 VAC

X1 & X2 are dry contact, N.O.

24VAC

OMMON

Terminal Block Wire Insertion Detail

Transformer Colors

Primary Voltage Lead Colors

120 Volts Black & White

208 Volts Black & Red

240 Volts Black & Orange

Each CP series relay panel comes pre-wired to the

included transformer, terminal blocks, and the coil

terminals on the provided contactors. It is not

recommended to unwire, or tamper with existing

wiring without pre-authorization from the factory.

!WARNING: General Safety Instructions

1. THIS UNIT SHOULD BE INSTALLED ONLY BY

QUALIFIED PERSONNEL!

2. Disconnect all power from the control before

opening the front cover plate.

CP-50, CP-100, CP-200 Specifications

Terminals Wiring Type

L1, L2

T1, T2 120, 208, 240, 277 VAC 12 AWG

(Minimum)

PM Class 2,

18-24 AWG

(See sensor

instructions

for size and

length limits)

24VAC, COMMON 24 VAC

X1, X2 Dry Contact, N.O.

Compatible Sensors

PM-224

PM-824

PM-HSC5

ETL Listing

File 3176880,

UL 508A,

CAN/CSA-C22.2 No. 14

Environment

Indoor, NEMA 1

enclosure, operating

temperature 0ºF to 100ºF

(-18ºC to 38ºC)

Limited Warranty: Watts Radiant (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In

the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.

THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES,

EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequen-

tial damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays,

vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated

by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.

Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not

apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights. SO FAR AS IS

CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR