tekmar 313 Installation

Installation & Operation Manual

tN2 Wiring Center 313

Introduction

The tekmarNet®2 Wiring Center 313 is designed to operate up to four zone valves in a hydronic heating system. It can be mounted in the mechanical room or near a remote zone manifold, providing a convenient location to wire both thermostats and zone valves while only requiring two wires to be run back to the mechanical room. When combined with tekmarNet®2 Thermostats, all devices communicate to provide a synchronized end switch that reduces cycling of equipment.

For use with

Zone 1 Zone 2 Zone 3 Zone 4

Power End Switch

tN2 thermostats only

tN2

Zoning

Replaces: 11/10

Features

Four 24 V (ac) powered zone outputs

• For use with tekmarNet

• Supports two-stage tekmarNet

• tN4 expansion terminals

• Isolated end switch

• 115 V (ac) zone group pump output

• Outdoor sensor input

• External diagnostic LEDs

• CSA C US Certified for use in USA and Canada

•

2 Thermostats

D 313

05/11

tN2 Wiring Center 313

Four Zone Valves

Beneﬁ ts

Simple, convenient wiring location

• Compact enclosure for flexible installation

• Reduce equipment cycling through the use of

• tekmarNet®2 Thermostats

Note

Not for use with tekmarNet®4 Thermostats•

Table of Contents

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Installation ...................................................................... 2

Preparation ................................................................. 2

Physical Dimensions ..................................................3

Installation Location ...................................................3

Rough-In Wiring .........................................................3

Sizing the Transformer ...............................................4

Control Wiring ............................................................4

Testing the Control Wiring ..........................................6

Applic ations .................................................................... 7

User Interface ............................................................... 10

LEDs ........................................................................10

DIP Switches ............................................................ 10

Sequence of Operation ................................................10

tekmarNet® System ..................................................10

Relay Outputs ........................................................... 11

Energy Saving Features ........................................... 11

Troubleshooting ............................................................ 11

Frequently Asked Questions .................................... 11

Technical Data ..............................................................12

Limited Warranty and Product Return Procedure ........12

Getting Started

Congratulations on the purchase of your new tekmarNet This manual covers the complete installation, programming and sequence of operation for this control. You will also find

instruction on testing, commissioning, and troubleshooting the control and system that it operates.

Wiring Center!

Installation

Caution

Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury or death. It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed into

the control circuit. Do not attempt to service the control. Refer to qualified personnel for servicing. There are no user serviceable parts. Attempting to do so voids warranty and could result in damage to the equipment and possibly even personal injury or death.

Radio Frequency Interference

The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to radio or television reception, which is determined by turning the control off and on, the user is encouraged to try

Preparation

Tools Required

tekmar or jeweller screwdriver

• Phillips head screwdriver

•

Materials Required

(2) #10 x 1” wood screws

• (2) wire nuts

• 18 AWG LVT solid wire (low voltage connections)

•

Power Required

120 V (ac), 1-phase, 15 A service from circuit breaker

• Power disconnect (optional)• panel

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to correct the interference by re-orientating or relocating the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit from that to which the receiver is connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Needle-nose pliers

• Wire stripper

•

14 AWG solid wire (line voltage connections)

• tekmar 009 (24 V (ac) transformer)

• Cable or conduit connectors

•

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Physical Dimensions

Front View

5–1/2”

(140 mm)

7/8”

(22 mm)

1–1/8” (30 mm)

5–1/2”

(140 mm)

Side View Back View

Installation Location

When choosing the location for the control, consider the

• following:

Keep dry. Avoid potential leakage onto the control.

• RH 90% to 122°F (50°C) in a non-condensing environment.

Do not expose to operating temperatures beyond 32-

• 122°F (0-50°C).

Provide adequate ventilation.

• Keep away from equipment, appliances or other sources

• of electrical interference.

2–1/4”

(57 mm)

1/2” Knock-out (x 4)

Strip wires 1/2 inch (13 mm).

Installed wires are not removable.

12-18 AWG

1/2” x 5/8”

(12 mm x 16 mm)

Knock-out (x 4)

Locate the control near zone valves if possible.

• Provide easy access for wiring and viewing the

•

Ø 1/8” (3 mm)

313

Zone Group Pump

Zone Power (L)

7/8” x 1/2” (23 mm x 12 mm)

Knock-out (x 4)

control. Mount approximately 5 ft. (1.5 m) off the finished floor.

• Install to wall using #10 x 1” wood screws. Wall anchors

• are recommended when mounting to sheet rock, wallboard or masonry.

Rough-In Wiring

Line Voltage Wiring

In most cases, the control can be mounted directly to a wall without the need for any line voltage connections.

As an option, the control may be mounted to a 4” x 4” electrical junction box so that the high voltage electrical connections for the transformer are safely contained.

For ease of service, the circuit breaker or power disconnect should be located in reasonably close proximity to the equipment.

All line voltage wire connections are recommended to be pulled inside a flexible or solid conduit. Always follow proper wiring practices, building and electrical codes for your jurisdiction.

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Each cable must be pulled to the electrical junction box. It is recommended to label each cable for easy identification. All line voltage wires should be stripped to a length of 1/2” (13 mm).

Pull a three conductor 14 AWG cable for the following equipment:

Circuit Breaker or Power Disconnect (if applicable)

• Zone Group Pump (if applicable)

•

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Low Voltage Wiring

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Each cable must be pulled from the equipment to the control’s plastic enclosure. All low voltage wiring connections enter the enclosure through conduit knockouts on the sides, or through the square knockouts on the rear. It is recommended to label each cable for easy identification. All low voltage wires are to be stripped to a length of 3/8” (9 mm) to ensure proper connection to the control.

Pull two conductor 18 AWG LVT cable, up to 500 feet (150 m) for the following equipment:

tekmarNet®2 Thermostats

• tekmarNet®2 House Control (if applicable)

•

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Sizing the Transformer

•

24 V (ac) Power

•

Zone Valves

•

Boiler T-T (If using End Switch)

•

Outdoor Sensor 070 (if applicable)

Pull three conductor 18 AWG LVT cable for the following equipment:

•

tekmarNet

4 Accessories (User Switch, Timer)

The control requires an external transformer. A tekmar Transformer 009 (or 009K which includes a 4”x 4” electrical box) can supply up to 40 VA, and includes an in-line fuse to protect the transformer and control.

In order to correctly size the external transformer, all loads connected to the control must be taken into account.

When adding up the loads, consider the following:

Thermostats 527, 528, 529, and 530 draw approximately

•

1.3 VA each. Each zone valve must be sized for peak load. This can be

• obtained by multiplying the peak current draw (in Amps) by 24 V (ac).

Zone

Thermostat Load

Zone Valve Load

Total Zone Load

1234

+ +++

Control Wiring

The total power capacity of the power supply should be larger than the total load of all the devices connected to the control. This total load must not exceed 99 VA. Multiple tekmar Transformer 009’s can be wired together to increase total VA capacity.

The following chart is provided to simplify transformer sizing:

Transformer

Control

Load (VA)

must exceed:

Line Voltage Wiring

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CAUTION: TURN ALL POWER OFF BEFORE PERFORMING ANY WIRING.

Wire the Grounds

Connect the power supply ground and zone group pump

• ground to the electrical box as shown in Figure 1.

Wire the Neutrals (N)

•

Connect the 115 V (ac) neutral (N) and zone group pump neutral wires to the 115 V (ac) side of the transformer. Use a wire nut or approved connector. See Figure 1.

Wire the Power (L)

•

Connect the 115 V (ac) line voltage (L) wire to the 115 V (ac) side of the transformer and to the Power L wire (red) of the zone group pump relay. Use a wire nut or approved connector. See Figure 1.

Wire the Zone Group Pump (L)

Connect the 115 V (ac) line voltage (L) wire from the

• zone group pump to the Zone Group Pump push-in wire connector. See Figure 1.

If the zone group pump is not used then cut the rear red

• and black wires where they exit the enclosure.

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