Uponor A3031003 User Guide

Page 1

Zone Control Module Instructions

RADIANT HEATING SYSTEMS

ZONE CONTROL MODULE

INSTRUCTION SHEET

The Uponor Zone Control Module is a printed circuit control and diagnostic device designed for use with Uponor Thermostats, Motorized Valve Actuators (MVAs), Thermal Actuators and Zone Valves.

Two-wire Compatibility

An interinal timer circuit was added for use with the two-wire thermal actuators. This timer will automatically activate the red LED after three minutes to ensure the actuator(s) are open and will close the ES terminals for external relays or devices.

The module provides the following:

• A connection to the power supply transformer

• Interconnections between the individual thermostats and their respective MVAs, thermal actuators or zone valves

• The connection between the end switches and the pump or boiler relay

Part No. Part Description Width Height Depth

A3031003 Three-zone Control Module 7.25" 2.75" 1"

A3031004 Four-zone Control Module 7.25" 2.75" 1"

Table 1: Product Descriptions

Specifications

Power Input: 24VAC

End-switch Circuit: Dry contact equivalent nominal

Recommended Thermostat Wire Size: 18GA

Table 2: Specifications

Part No. Part Description 50VA 75VA 100VA

A3020522 Motorized Valve Actuator, four-wire 7 10 14

A3010522 Thermal Actuator, four-wire 12 18 25

A3020416 Thermal Actuator, two-wire 12 18 25

A3030522 Thermal Actuator, two-wire 12 18 25

A3030523 Thermal Actuator, two-wire 12 18 25

Table 3: Maximum Number of Actuators on a Transformer (Rating at 24VAC)

The modules are internally fused for protection from over current or direct shorts from the power supply transformer. The end-switch circuit is also protected from over current and a 2-amp fuse is factory installed.

Note: Because the ES terminals are completely isolated, the modules no longer require separate transformers on R, C and ES terminals. Pay careful attention to transformer sizing if using only one transformer.

Zone Configurations

The Uponor Zone Control Modules are available in both three- and four-zone configurations. Boards can be ganged together to expand the number of zones. Allow 1⁄4" between boards when mounting end-to-end.

Connecting Instructions

Refer to the following instructions to properly connect the module.

1. Connect modules in series via a module jumper (provided).

24VAC, 2A maximum

2. Fasten the jumper within the input and output blocks of the corresponding modules (see Figure 1 on page 2).

Wiring Instructions

Refer to the following instructions to properly wire the module.

1. Strip 3⁄8" insulation from the wire.

2. Ensure the wire is fully seated in

the terminal and that it does not short to adjacent wires.

3. Twist loose stranded wire tightly.

Ensure no loose strands are present.

4. Tighten the terminal nut.

Note: Each terminal is equipped with a jamb plate for accommodating stranded wire. When reconnecting the terminal, it may be necessary to push the jamb plate back into place with a suitable round punch prior to reinserting the stranded wires. The maximum number of connections per terminal is four. If more than four wires are required at the terminal, bundle or wire nut the wires together and run one wire to the terminal.

Note: If using Uponor 500 Series controls, use a minimum of threewire thermostat wire for proper functioning of the thermostat. (Four wire is recommended.)

Fuse Replacement

Replace fuses on the board following the guidelines below.

• 2A fuse for 50VA transformer

• 3A fuse for 75VA transformer

• 4A fuse for 100VA transformer

Page 2

Heat-only Thermostat

A3030101

SetPoint 501s

A3041501

Figure 1: Module Jumper

24 VAC Transformer

A3050050

Figure 2: Wiring Diagram

Alternative wiring connection to pump relay, boiler, etc.

A3030522 Two-wire Thermal Actuator (EP) A3030523 Two-wire Thermal Actuator (TruFLOW A3020416 Two-wire Thermal Actuator

WRh

2 43

R C

R 1 R2 Y1 Y2

Brown Wire

Menu Item

C RCom S1

5 6

2 43 2 43

R 1 R 2 Y 1 Y2 R 1 R2 Y1 Y2

Blue Wire

Red Wires

Yellow Wires

A3010522 Four-wire Thermal Actuator

⁄4" Zone Valve

A3010525 A3010526 1" Zone Valve

)

WRh

R C

Red Wires

Yelow Wires

A3020522 Four-wire MVA

⁄4" MVA Zone Valve

A3070525 A3070526 1" MVA Zone Valve

To Pump Relay, Boiler, etc.

Operation

Power Up

The Power LED must be illuminated Green for the Zone Control Module to operate properly. If the Power LED is not illuminated Green, check the supply power (transformer) and wiring.

Call for Heating

If a compatible thermostat calls for heat, the LED below the terminal block for that thermostat turns Yellow (signaling the thermostat is on).

• If two-wire actuators are connected, the associated LED will begin to flash Red then turn solid Red after 3 minutes.

Uponor, Inc. 5925 148th Street West Apple Valley, MN 55124 USA Tel: 800.321.4739 Fax: 952.891.2008

• If four-wire actuators are connected, the associated LED will begin to flash Red then turn solid Red when the end switch closes.

Once the LED is on and lit solid Red, the relay for ES terminals will close, enabling a pump, boiler or other heating component.

Ending a Call for Heating

If a compatible thermostat no longer requires heat, the LED below the terminal block for that thermostat will turn off.

• Power will be removed from the Y1 and Y2 terminals, allowing the actuator(s) to close.

Uponor Ltd. 2000 Argentia Rd., Plaza 1, Ste. 200 Mississauga, ON L5N 1W1 CANADA Tel: 888.994.7726 Fax: 800.638.9517

• The Red LED will flash, indicating the call for heat on that zone has been removed and the actuator(s) are closing.

• If using a fast-opening motor (e.g., a Motorized Valve Actuator), the Red LED will turn off as soon as the end switch opens.

The relay for ES terminals will open when there are no Yellow LEDs lit on the board (or boards if they are ganged together).

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