Tekmar D540, tekmarNet 2 530, tekmarNet 4 530 Installation & Operation Manual

tekmarNet®4 Thermostat 540

Installation & Operation Manual

D540

08/10

Replaces:03/09

D 540 - 08/10

Zoning

The tekmarNet®4 Thermostat 540 provides operation for:

One Stage Heat One Stage Cool One Stage Fan

•

Introduction

Features

Requires 7 wires (tN4, C, R, W, Rc, Y, G)

Outdoor temperature display Bright backlight 2 button temperature adjustment Communication with other

tekmarNet® devices improves system efficiency and comfort

Schedule member status enables setback operation

Optimum start Responds to tekmarNet® Scenes

Cooling Group Master Freeze protection Exercising Zone synchronization

•

Beneﬁ ts

Energy savings Reduced temperature swings

Compatible with tekmarNet® Timers, User Switches and Gateway for additional control

Interlock prevents simultaneous heating & cooling

•

Congratulations on the purchase of your new tekmar thermostat. This manual will step through the complete installation, programming and sequence

of operation for this control. At the back, there are tips for control and system troubleshooting.

Getting Started

Preparation

tekmar or jeweller screwdriver Phillips head screwdriver

•

Wire Stripper•

Tools Required

------------------------------------------------------

Materials Required

--------------------------------------------------

2, #6 x 1” Wood Screws 18 AWG LVT Solid Wire

(Low Voltage Connections)

•

Optional Adapter Plate 007 (for installation on 2” x 4” gang box)

•

Installation

Table of Contents

Getting Started ..............................2

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

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

Removing The Thermostat Base ...3

Mounting The Thermostat Base ....3

Thermostat Wiring .........................4

Testing the Thermostat Wiring ......5

Mounting the Thermostat ..............6

Cleaning the Thermostat ...............6

Switch Settings ..................................7

User Interface ....................................8

Display...........................................8

Symbols Description .....................8

Button Operation ...........................9

Settings ..................................10-15

Sequence of Operation ....................16

Heating Operation .......................16

Cooling Operation ....................... 17

Fan Operation .............................18

Schedules ...................................19

Scenes (System Override) ..........19

Troubleshooting ...............................20

Error Messages .................... 20-21

Frequently Asked Questions .......22

Job Record ..................................23

Technical Data .............................23

Limited Warranty and Product

Return Procedure ........................24

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.

Choose the placement of the thermostats early in the construction process to enable proper wiring during rough-in.

Consider the following:

Interior Wall. Keep dry. Avoid potential leakage onto the control. Relative Humidity max 92% up to 104°F (40°C), 50% RH above 104°F (40°C).

Non-condensing environment. No exposure to extreme temperatures beyond 36-122°F (2-50°C). No draft, direct sun, or other cause for inaccurate temperature readings. Away from equipment, appliances, or other sources of electrical interference. Easy access for wiring, viewing, and adjusting the display screen.

Approximately 5 feet (1.5 m) off the finished floor. The maximum length of wire is 500 feet (150 m). Strip wire to 3/8” (10 mm) for all terminal connections. Use standard 8 conductor, 18 AWG wire.

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Installation Location

-------------------------------------------------

Removing The Thermostat Base

Push tab

Remove thermostat from base

To remove the thermostat base:

Place a small slot screwdriver or similar tool into the slot located on the top of the thermostat.

While pushing down against the plastic tab, pull the thermostat away from the thermostat’s base.

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Mounting The Thermostat Base

Stud

Switch Box

Thermostat

Base

007 Adaptor

Plate

/4”

(83 mm)

If a single gang switch box is used, an Adaptor Plate 007 is required to mount the thermostat to the box.

Fasten the base of the thermostat to the adaptor plate.

Feed the wiring through the openings in the back of the adaptor plate and thermostat.

Use the upper and lower screw holes to fasten the adaptor plate to the box.

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Mounted on switch box

If a switch box was not used, mount the thermostat directly to the wall.

Feed the wiring through the openings in the back of the thermostat.

Use screws in the screw holes to fasten the thermostat to the wall. At least one of the screws should enter a wall stud or similar rigid material.

•

Stud

/8”

(60 mm)

screwhole

/8”

(60 mm)

screwhole

Thermostat

Base

Wall

Mounted on wallboard

Thermostat Wiring

The thermostat operates a single heating system zone together with a cooling system and fan.

Connect tN4, C, R, and W terminals on the thermostat to the tN4, C, R and W terminals on the tN4 Wiring Center or Zone Manager.

Connect the Rc, Y and G terminals on the thermostat to the R, Y and G terminals on the cooling equipment.

12 34

tN4 Wiring Center

tN4 Zone Mana

Cooling Equipment

1 Stage Cooling

1 Stage

Fan

G Y R

Fan

Cooling

tN4 C W

1234

tNt 540

540

One Stage Heat / One Stage Cool / One Fan

Made in Canada

Mmm YYYY

Lot # 12345

Meets Class B:

Canadian ICES

FCC Part 15

Power: 24 V ±10% 50/60 Hz 1.8 VA 56 VA fully loaded Relays: 24 V (ac) 2 A

1001-01

tN41C2R3W

Switch Settings:

For instructions see brochure

Use at least 75°C conductors

Setback

Scene

None

Lock

Unlock

Cool Master 1

Oﬀ

Testing the Thermostat Wiring

Testing the Power

---------------------------------------------------

1. Remove the front cover from the thermostat.

2. Use an electrical test meter to measure (ac) voltage between the R and C terminals. The reading should be 24 V (ac) +/– 10%.

3. Install the front cover.

Testing the Heat, Cool, and Fan Relays

--------------------------------

1. Remove the front cover from the thermostat.

2. Press Mode button until Mode is set to OFF.

3. Set the electrical test meter to continuity.

4. Place probes between R (3) and W (4), then between Rc (5) and Y (6). In both cases there should be no continuity. If there is continuity then there may be a wiring fault or the relay may be faulty.

5. Press Mode button until Mode is set to HEAT.

6. Press the button and set the heating temperature above the current room temperature. Make sure the display does not show “WWSD”. The “H1” symbol should appear on the display.

7. There should be continuity between the R (3) and W (4) terminals.

8. Press Mode button until Mode is set to COOL.

9. Press the button and set the cooling temperature below the current room temperature. The “C1” symbol should appear on the display.

10. There should be continuity between the Rc (5) and Y (6) terminals.

11. Press Fan button to set the fan to Auto.

12. Ensure the fan symbol is not shown on the display.

13. There should be no continuity between Rc (5) and G (7) terminals.

14. Press Fan button to set the fan to On.

15. The “Fan” symbol should appear on the display.

16. There should be continuity between the Rc (5) and G (7) terminals.

Mounting the Thermostat

To place the thermostat back on the mounting base:

Place thermostat bottom tabs on matching mounting base notches.

Pivot top of the thermostat towards wall, ensuring wires clear obstructions.

The top clasp makes a clicking sound when properly closed.

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Pivot Tab

The thermostats’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the control. Do not use solvents or cleaning solutions.

Cleaning the Thermostat

Testing the tekmarNet®4 Bus

-----------------------------------------

The symbol is shown on the display when communication is present. If the thermostat is connected in a network and the communication is missing, there may be an open or short circuit on the tN4 and C bus wires.

1. Remove the front cover from the thermostat.

2. To test for short circuits: Disconnect the tN4 bus wires on one end.

Install wire nuts on each wire to ensure the wire ends are not touching. Disconnect the tN4 bus wires on the other end. Measure for continuity using an electrical meter. If continuity is present, there is a short circuit fault along the wires. It is

recommended to replace the tN4 bus wires.

3. To test for open circuits: Disconnect the tN4 bus wires on one end and connect them together.

Disconnect the tN4 bus wires on the other end. Use an electrical meter to measure for continuity. If there is no continuity, there is an open circuit fault along the wires. It is

recommended to replace the tN4 bus wires.

•

Switch Settings

Switches are set to “On” position from the factory, and do not require changing for most applications.

12 34

1234

tNt 540

540

One Stage Heat / One Stage Cool / One Fan

Made in Canada

Mmm YYYY

Lot # 12345

Meets Class B:

Canadian ICES

FCC Part 15

Power: 24 V ±10% 50/60 Hz 1.8 VA 56 VA fully loaded Relays: 24 V (ac) 2 A

1001-01

tN41C2R3W

Switch Settings:

For instructions see brochure

Use at least 75°C conductors

Setback

Scene

None

Lock

Unlock

Cool Master 1

Oﬀ

12 34

1234

Meets Class B:

Switch Settings:

Setback

Scene

None

Unlock

Lock

Cool Master 1

Oﬀ

Switch

Position

Action

SETBACK

The thermostat follows a programmable setback schedule as a schedule member if available. Requires the installation of a Timer 033 to use this feature.

OFF

The thermostat does not follow a programmable setback schedule.

SCENE

The thermostat responds to changes in the scene (system wide manual overrides). Requires the installation of a User Switch 479 to use this feature.

OFF

The thermostat does not respond to scenes.

NONE

The thermostat is not part of a cooling group.

OFF

COOL MASTER 1

The thermostat is a master of cooling group number 1.

LOCK ACCESS LEVEL

Locked to ‘User’ access level. Set to Lock when installation completed.

OFF

UNLOCK ACCESS LEVEL

Unlock to allow ‘User’ and “Installer’ access level. Set to Unlock during installation process.

tekmarNet® reset control must also be set to Unlocked (Installer access level).

SECONDARY DISPLAYMAIN DISPLAY

HEAT

Heat is turned on.

COOL

Cooling is turned on.

FAN

Fan is turned on.

SUN

Operating at the occupied (day) temperature.

MOON

Operating at the unoccupied (night) temperature.

COOL GROUP MASTER

Thermostat operates the cooling for a group of thermostats.

CLOCK

Operating on a programmable schedule.

LOCK

Locked to ‘User’ access level.

AWAY

Operating at the Away scene temperature.

tekmarNet

Communication is present.

WARNING SYMBOL

Indicates an error is present.

WARM WEATHER SHUT DOWN

The heating system has been shut off for the summer.

Display

Symbols Description

Switch between

Heat, Cool, Auto

and Off modes

Switch between Auto, On and %

Fan operation

Adjust the current temperature

or displayed setting up or down

User Interface

+ 16 hidden pages

Tekmar D540, tekmarNet 2 530, tekmarNet 4 530 Installation & Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual