Tekmar D538 Bedienungsanleitung

tekmarNet®4 Thermostat 538

Installation & Operation Manual

D538

12/11

Zoning

Replaces:08/10

The tekmarNet®4 Thermostat 538

provides operation for:

One Stage Heat•

Introduction

Features

Zone Synchronization

Zone Post Purge

Intelligent setback (Timer 033)

Scenes (Away override)

Auto Heating Cycle

tekmarNet®4 communication

compatible

Requires 4 wires

Pulse Width Modulation

CSA C US Approved for use in

USA and Canada

Outdoor temperature display

Air Group member

Backlight

Freeze Protection

Equipment Exercising

Floor warming (Slab Sensor 079)

1 Auxiliary sensor input

Room Temperature Limiting

Supports Radiant Floor 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

Caution..........................................2

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

Removing The Thermostat Base...3

Mounting The Thermostat Base....3

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

Testing the Thermostat Wiring ......4

Mounting the Thermostat ..............5

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

Switch Settings ..................................6

User Interface....................................7

Display...........................................7

Button Operation ...........................7

Symbols Description .....................7

Settings ....................................8-14

Sequence of Operation....................15

Heating Operation .......................15

Air Group Operation ....................16

Floor Cooling...............................16

Schedules ................................... 17

Scenes (System Override) .......... 17

Troubleshooting ...............................18

Error Messages......................18-21

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 32-122°F (0-50°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 4 conductor, 18 AWG wire.

•

Installation Location

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

Removing The Thermostat Base

Push

tab

1Remove 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.

•

Mounting The Thermostat Base

Stud

Switch

Box

Thermostat

Base

007 Adaptor

Plate

31/4”

(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.

•

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

23/8”

(60 mm)

screwhole

23/8”

(60 mm)

screwhole

Thermostat

Base

Wall

Mounted on wallboard

Thermostat Wiring

The thermostat operates a single heating system zone.

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 optional auxiliary sensor wires to the sensor terminals 5 and 6.

12 34

tN4 Wiring Center

tN4 Zone Manager

Slab Sensor 072, 073, 079

Outdoor Sensor 070

Indoor Sensor 076, 077, 084

tN4 C W

1234

tNt 538

538

One Stage Heat

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

Relay: 24 V (ac) 2 A

1001-03

tN4

Sensor

Switch Settings:

For instructions see brochure

Use at least 75°C conductors

Setback

Scene

Lock

Not used

Unlock

Oﬀ

No Power

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.

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.

•

Pivot

Tab

Testing the Heat Relay

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

1. Remove the front cover from the thermostat.

2. Press the button and set the heating temperature below the current room

temperature. There should be no H1 symbol on the display.

3. Set the electrical test meter to continuity.

4. Place probes between R (3) and W (4). There should be no continuity. If there

is continuity then there may be a wiring fault or the relay may be faulty.

5. 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.

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

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 538

538

One Stage Heat

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

Relay: 24 V (ac) 2 A

1001-03

tN4

Sensor

Switch Settings:

For instructions see brochure

Use at least 75°C conductors

Setback

Scene

Lock

Not used

Unlock

Oﬀ

No Power

12 34

1234

Mmm YYY

L t # 1234

Meets Class B:

Canadian ICES

2 A

Switch Settings:

Setback

Scene

Lock

Not used

Unlock

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 OFF

The thermostat does not respond to scenes.

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).

ON Not used

OFF Not used

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

SECONDARY DISPLAYMAIN DISPLAY

HEAT

Heat is turned on.

SUN

Operating at the occupied

(day) temperature.

MOON

Operating at the unoccupied

(night) temperature.

AWAY

Operating at the Away scene

temperature.

AIR GROUP

The air group is cooling.

Heating can start once the

cooling is finished.

LOCK

Locked to ‘User’ access level.

CLOCK

Operating on a

programmable schedule.

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

User Interface

Button Operation

Press the or the button to select the room temperature.

Settings (1 of 7)

Display Range Access Description Set to

40 to 95°F

(4.5 to 35.0°C)

Default = 70°F

(21.0°C)

Installer

User

SET ROOM HEAT

Set the room heating temperature while in the

event.

40 to 95°F

(4.5 to 35.0°C)

Default = 65°F

(18.5°C)

Installer

User

SET ROOM HEAT

Set the room heating temperature while in the

event.

40 to 95°F

(4.5 to 35.0°C)

Default = 62°F

(16.5°C)

Installer

SET ROOM HEAT AWAY

Set the room heating temperature while in the Away

scene.

Continued on next page.

• Press and hold down both the and buttons for 2 seconds to change from one step to the next.

• Release both buttons once the step has been reached.

• Press the or the button to change the setting, if available.

• Press and hold down both the and buttons for 2 seconds to go to the next step, OR

• After 10 seconds of no button activity, the display goes back to normal operation.

• Note: Set switch setting #3 and tekmarNet®system control to Unlock to change Access level to Installer.

Press

Together

Settings (2 of 7)

Display Range Access Description Set to

40 to 122°F

(4.5 to 50.0°C)

Default = 72°F

(22.0°C)

Installer

User

SET FLOOR HEAT

Set the floor heating temperature while in the

event.

Available when:

A slab sensor is installed on the auxiliary sensor

input AND Sensor setting in the Adjust menu is set

to Floor AND Room Sensor setting in the Adjust

menu is set to Off.

•

40 to 122°F

(4.5 to 50.0°C)

Default = 65°F

(18.5°C)

Installer

User

SET FLOOR HEAT

Set the floor heating temperature while in the

event.

Available when:

A slab sensor is installed on the auxiliary sensor

input AND Sensor setting in the Adjust menu is set

to Floor AND Room Sensor setting in the Adjust

menu is set to Off.

•

Off, 30 sec, On,

On +

Default = 30 sec

Installer

User

BACKLIGHT

Select the backlight operation.

Off = Permanently Off

30 = Temporary on for 30 seconds

On = Permanently On

On + = On during and off during

Continued on next page.

Display Range Access Description Set to

°F or °C

Default = °F

Installer

User

TEMPERATURE UNITS

Press the or the button to change from °F to

°C and vice versa.

Device Type with

Software Version,

Address

Installer

User

DEVICE TYPE

Display alternates between the Device Type (large

number) with Software Version (upper right corner)

and the thermostat address.

40 to 95°F

(4.5 to 35.0°C)

Default = 85°F

(29.5°C)

Installer

MAXIMUM SET ROOM HEAT

Set the maximum room heating limit while in the

event.

40 to 95°F

(4.5 to 35.0°C)

Default = 85°F

(29.5°C)

Installer

MAXIMUM SET ROOM HEAT

Set the maximum room heating limit while in the

event.

40 to 95°F

(4.5 to 35.0°C)

Default = 45°F

(7.0°C)

Installer MINIMUM SET ROOM HEAT

Set the minimum room heating limit.

Settings (3 of 7)

Continued on next page.

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