tekmar 541 User Manual

Download

Page 1

- Data Brochure

•

tekmarNet®4 Thermostat 541

D 541

08/07

Information

Brochure

Choose controls

to match

application

Application

Brochure

Design your

mechanical

applications

Rough In

Rough-in

instructions

Wiring

wiring

Wiring

Brochure

Wiring and

installation of

specific control

Data

Brochure

Control settings

and sequence of

operation

Job

Record

Record settings &

wiring details for

future reference

Introduction

The tekmarNet®4 thermostat 541 operates one stage of heating equipment. The 541 can operate as a stand alone device, or communicate with a group of tekmarNet®4 thermostats.

Features

• tN4 Compatible

• 1 Auxiliary Temperature Sensor Input

• Pulse Width Modulation

• Scenes

Page 2

Table of Contents

•

Table of Contents ............................................................2

Display and DIP Switches ..............................................2

Dip Switches ...........................................................2

Access Levels .........................................................3

Display and Symbols Description............................3

User Interface .........................................................4

Setup ..............................................................................5

View Menu .............................................................5

Adjust Menu ............................................................6

Scene Menu ............................................................8

Schedule Menu .......................................................9

Miscellaneous Menu ..............................................9

Thermostat Operation .................................................. 11

Auxiliary Sensors ................................................. 11

Mode of Operation ............................................... 11

Adjusting the Temperature ...................................12

Cycles Per Hour ................................................... 13

Heating Terminal Units .........................................13

Heating Operation ................................................ 14

Cool Groups .........................................................15

Setting the Schedule ............................................. 15

Optimum Start / Stop ...........................................15

Scenes ................................................................. 16

Away Hold ............................................................ 17

Offset ................................................................... 17

Units of Temperature ............................................ 17

Backlight .............................................................. 17

tN4 Address ......................................................... 17

Pump Exercising ................................................... 17

Error Messages ............................................................ 18

Cleaning the Thermostat .............................................24

Warranty ....................................................................... 24

Display and DIP Switches

Dip Switches

tN4 System Control (DIP Switch #2)

A tN4 System Control is a control, not a thermostat, that the 541 thermostat connects to through the tN4 bus. All tN4 compatible Outdoor Reset Modules are tN4 System Controls.

• If the thermostat is connected to a tN4 System Control, set the tN4 System Control DIP switch to tN4 System Control (down position).

• If the thermostat is not connected to a tN4 System Control, set the tN4 System Control DIP switch to None

(up position).

Lock / Unlock (DIP Switch #1)

Use the Lock / Unlock DIP switch to lock or unlock the Access Level of the 541.

• To unlock the Access Level, set the DIP switch to the unlocked (down) position.

• To lock the Access Level, set the DIP switch to the locked (up) position. Once locked, a padlock is displayed in the lower right corner of the display and the Access Level cannot be changed.

Note: The tN4 System Control’s Lock / Unlock DIP switch overrides the Lock / Unlock DIP switch on the 541. Set the tN4 System Control’s Lock / Unlock DIP switch to the Unlock position before Access Levels can be changed on the thermostat.

Page 3

Access Levels

•

The Access Level restricts the number of Menus, Items and Adjustments that can be accessed by the user. The Access Level setting is found in the Miscellaneous (MISC) menu. Select the appropriate access level for the people who work with the thermostat on a regular basis.

The 541 has five Access Levels:

• Advanced (ADV): access to all settings

• Installer (INST): settings required for installation

• User (USER): for property owners

• Limited (LTD): limited temperature adjustment

• Secure (SEC): for commercial and public installations

Display

Menu Field

Displays the

current menu

For more information, see the Misc (Miscellaneous) Menu section.

In the following menu tables, the access level the item is visible in is shown in the access column.

To adjust the Access Level:

1. Set the Unlock / Lock DIP switch to the unlock position. If a tN4 System Control is connected to the 541, the Unlock / Lock DIP switch on the tN4 System Control must be set to the unlock position.

2. Use the Menu button to select the Misc menu.

3. Use the Item button to select the Access menu item.

4. Use the Up and Down button to select the required

Access Level.

Item Field

Displays an abbreviated name of the selected item

Status Field

Displays the current status

of the control’s inputs, outputs and operation

Symbols Description

MODE OF OPERATION

Displays whether the device is in heating mode.

FIRST STAGE HEAT

First stage heating is operating.

tN4 COMMUNICATION

A tN4 network is detected.

Number Field

Displays the current value of the selected item

OPTIMUM START / STOP

The Optimum Start or Optimum Stop feature is active.

WARNING

An error is present.

TEMPORARY HOLD

The temperature has been temporarily adjusted from the scheduled event.

LOCK

The Access Levels are locked. A menu option is visible but not adjustable.

SCHEDULED EVENT

Displays the current scheduled event.

Page 4

User Interface

•

Use the User Interface available on the Liquid Crystal Display (LCD) to setup and monitor the operation of the thermostat. Use the four push buttons below the LCD (Menu, Item, Up, Down) to select settings. As you enter settings, record the settings in the Job Record J 541.

The menus display in the Menu Field at the left of the LCD.

Five menus are available:

• View

• Adjust

• Scene

• Schedule

• Miscellaneous

To select a menu, press and release the Menu button.

Item

In each menu, a group of items can be selected. The abbreviated name of the selected item displays in the Item field of the LCD display.

• To view the next available item, press and release the Item button.

• To view the previous item, hold down the Item button and press and release the Up button.

Adjusting a Setting

To adjust a setting:

1. Use the Menu button to select the appropriate menu.

2. Use the Item button to select a menu item.

3. Use the Up or Down button to adjust the setting.

Default Item

• To set the default item in the View Menu, display the

item for more than five seconds.

After navigating menus, the display reverts back to the default item after 60 seconds of button inactivity.

Copy Settings

To save time in setting thermostats, you can copy the settings from one tN4 thermostat to a second tN4 thermostat.

Refer to the COPY item in the Misc menu on page 10.

Continue to next Menu

Continue to next Item

Page 5

Display Menus

View Menu (1 of 1)

The View menu items display the current operating temperatures and status information of the system.

Item Field Range

VIEW MENU

-58 to 212°F

(-50.0 to 100.0°C)

– – –, 40 to 95°F

(– – –, 4.5 to 35.0°C)

– – – (if no recent

message),

-58 to 212°F

(-50.0 to 100.0°C)

Access

SEC

LTD

USER

INST

ADV

USER

INST

ADV

SEC

LTD

USER

INST

ADV

Description

ROOM SECTION A

Current air temperature in the room. Note: This item is only available when the Room

Sensor is set to On or the Auxiliary Sensor is set to Room.

ROOM SET SECTION A

Selected room temperature. Note: This item is only available when the Room

Sensor is set to On or the Auxiliary Sensor is set to Room.

OUTDOOR SECTION A

Current temperature at the outdoor sensor. Note: This item is only available when an outdoor

sensor is connected to the tN4 network.

SEC

-58 to 212°F

(-50.0 to 100.0°C)

-22 to 266°F

(-30.0 to 130.0°C)

After the last item, the control returns to the first item in the menu.

LTD

USER

INST

ADV

INST

ADV

FLOOR

Current floor temperature. Note: This item is only available when the Auxiliary

Sensor is set to Floor.

SUPPLY TEMPERATURE OF TN4 BUS

Actual water temperature of the tN4 bus for the first stage of heat.

Note: This item is only available when the thermostat is connected to an Outdoor Reset Module and the DIP switch is set to tN4 System Control.

SECTION A

SECTION F

Page 6

Adjust Menu (1 of 2)

Item Field Range Access Description

The Adjust Menu items are the programmable settings used to operate the mechanical equipment.

Wake

UnOccupied

Occupied

Sleep

Away

ADJUST MENU

Wake

UnOccupied

Occupied

OFF, HEAT,

Default = HEAT

40 to 95°F

(4.5 to 35.0°C)

Default = 70°F (21.0°C)

Default = 62°F (16.5°C)

Default = 70°F (21.0°C)

Default = 62°F (16.5°C)

OFF, 40 to 122°F

(OFF, 4.5 to 50.0°C)

Default = 70°F (21.0°C)

Default = OFF

Default = 70°F (21.0°C)

USER

INST

ADV

LTD

USER

INST

ADV

LTD

USER

INST

ADV

MODE OF OPERATION SECTION B

Mode of operation of the thermostat.

SET HEAT SECTION C

Selected air heating temperature for each event. Note: At the Limited Access Level, you can only

adjust the temperature +/-3°F (1.5°C) from the last setting.

FLOOR MINIMUM SECTION A

Select the minimum floor temperature for each event.

Note: This item is only available when the Auxiliary Sensor is set to Floor. At the Limited Access Level, you can only adjust the temperature +/-3°F (1.5°C) from the last setting.

Sleep

Continued on next page.

Default = OFF

40 to 122°F

(4.5 to 50.0°C) Default = 85°F

(29.5°C)

OFF, ROOM,

FLOR (Floor),

OUT (Outdoor)

Default = OFF

ADV

INST

ADV

FLOOR MAXIMUM

Maximum floor temperature. Note: This item is only available when Sensor 1 is

set to Floor.

SENSOR SECTION A

Select the type of sensor connected to the auxiliary sensor input.

SECTION A

Page 7

Adjust Menu (2 of 2)

Item Field Range Access Description

OFF, ON

Default = ON

SYNC, AUTO

2 to 12

Default = AUTO

CTRL, HRF1, HRF2,

COIL, CONV, RAD,

BASE, OTHR

Default =CTRL

OFF, ON

Default = ON

INST

ADV

INST

ADV

INST

ADV

ROOM SENSOR SECTION A

Selects whether the built-in room sensor is functional.

HEAT CYCLES PER HOUR SECTION D

Select the number of heating cycles per hour. SYNC results in 5 CPH. All tN4 thermostats that are connected and have the SYNC setting selected synchronize their cycle to the same starting time.

Note: This item is only available when the tN4 System Control DIP switch is set to None.

HEAT 1 TERMINAL SECTION E

Select the type of heating terminal. Note: If CTRL is selected, the terminal unit selected

on the tN4 System Control is used.

HEAT 1 PUMP SECTION F

Select whether the system, primary, or mixing pump on a tN4 System Control must operate while the heat is operating.

Note: This item is only available when the H1 Terminal item is set to CTRL, HRF1, HRF2, Fan Coil, Convector, Radiator, or Baseboard.

ADJUST MENU

OFF, ON

Default = OFF

NONE, 1 to 16

Default = NONE

ON, OFF

Default = ON

After the last item, the control returns to the first item in the menu.

INST

ADV

INST

ADV

HEAT 1 DELAY SECTION F

Select whether the system, primary, or mixing pump on a tN4 System Control is delayed to allow a thermal motor zone valve to open. Select On for thermal motor, select Off for zone pump or motorized zone valve.

Note: This item is only available when the H1 Terminal item is set to CTRL, HRF1, HRF2, Fan Coil, Convector, Radiator, or Baseboard.

COOL MEMBER SECTION G

Select the cool group of which this thermostat is a member. Select None if this thermostat is not a cool group member.

Note: This item is only available when the thermostat is connected to a tN4 network.

OPTIMUM START / STOP SECTION I

Select whether to use Optimum Start / Stop for heating.

Note: This item is only available when a heating schedule is selected.

Page 8

Scene Menu (1 of 1)

The Scene Menu items set the current scene as well as the scene settings.

Item Field Range

SCENE MENU

Occ, Away,

PERM1, Away 2

PERM UnOcc 3,

PERM 4, PERM 5

TMPY Occ 6

TMPY 7, TMPY 8

Default = PERM 1

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

Access

USER

INST

ADV

INST

ADV

INST

ADV

INST

ADV

INST

ADV

INST

ADV

Description

SELECT SECTION J

Select the scene for the building. Note: Only Occ and AWAY are available when no

schedule is selected.

SET PERMANENT 1 SECTION J

Select an action for the Permanent 1 scene. Note: This item is only available when SCENE menu

is set to ON and a schedule has been selected.

SET PERMANENT 4 SECTION J

Select an action for the Permanent 4 scene. Note: This item is only available when SCENE menu

is set to ON and a schedule has been selected.

SET PERMANENT 5 SECTION J

Select an action for the Permanent 5 scene. Note: This item is only available when SCENE menu

is set to ON and a schedule has been selected.

SET TEMPORARY 7 SECTION J

Select an action for the Temporary 7 scene. The scene lasts for 4 hours before reverting to the previous permanent scene.

Note: This item is only available when SCENE menu is set to ON and a schedule has been selected.

SET TEMPORARY 8 SECTION J

Select an action for the Temporary 8 scene. The scene lasts for 8 hours before reverting to the previous permanent scene.

Note: This item is only available when SCENE menu is set to ON and a schedule has been selected.

OFF, ON

Default = OFF

After the last item, the control returns to the first item in the menu.

INST

ADV

SCENE MENU SECTION J

Select the Scene feature of the thermostat.

Page 9

Schedule Menu (1 of 1)

The Schedule menu items set the schedule type, the number of events per day, and the event times.

Item Field Range

NONE,

MBR1, MBR2,

MBR3, MBR4

Default = NONE

Access

USER

INST

ADV

SCHEDULE MENU

After the last item, the control returns to the first item in the menu.

Misc (Miscellaneous) Menu (1 of 2)

Description

HEAT SCHEDULE SECTION H

If a schedule is not required, select NONE. If the schedule is set on another thermostat, select

MBR1 to MBR4. Note: This item can be viewed in the USER and

INST access levels but can only be adjusted in the ADV access level.

The Miscellaneous menu items set display and control options such as access level and temperature units.

Item Field Range

MISC MENU

Continued on next page.

SEC, LTD, USER,

INST, ADV

Default = USER

°F, °C

Default = °F

ON, TMPY, OFF

Default = TMPY

Access

SEC

LTD

USER

INST

ADV

USER

INST

ADV

USER

INST

ADV

Description

ACCESS LEVEL

The access level of the thermostat. The access column shows which items are visible in each access level.

Note: This item is only available when the Lock / Unlock DIP switch on the thermostat and the tN4 system control are set to Unlock.

UNITS

SECTION M

Select Fahrenheit or Celsius as the temperature units.

BACKLIGHT

Select whether the backlight displays permanently, temporarily, or is off. The temporary backlight lasts for 30 seconds.

SECTION N

Page 10

Misc (Miscellaneous) Menu (2 of 2)

Item Field Range

MISC MENU

-5.0 to +5.0°F in

0.1°F increments

(-3.0° to +3.0°C in

0.1°C increments) Default = 0.0°F

– – –, -bus#:01,

... bus#:24, DEF

Default = – – –

1 to 24 ADV

Access

ADV

INST

ADV

Description

OFFSET SECTION L

Fine tune the current room temperature. Adjustments are in tenths of a degree.

COPY SETTINGS

Copy settings from another thermostat to this thermostat.

1. Select the address of the thermostat to copy from. Select DEF to load the factory default settings.

2. Wait for 3 seconds and then press the Up and Down buttons for 1 second.

The thermostat will show the percentage of progress.

4. Displays DONE if successful or WARN if only part of the settings were copied.

NUMBER OF DEVICES

Number of tN4 devices connected to this tN4 bus. Note: This item is only available when the thermostat

is connected to a tN4 bus.

ADDRESS SECTION O

SEC

AUTO, -bus#:01,

... bus#:24

Default = AUTO

541, Software Version

After the last item, the control returns to the first item in the menu.

LTD

USER

INST

ADV

SEC

LTD

USER

INST

ADV

The tN4 bus address of this thermostat. Auto allows the tN4 system to automatically assign

an address to the thermostat. To manually set the address, use the Up or Down

buttons while in the ADV or INST access level. Note: This item is only available when the thermostat

is connected to a tN4 bus.

TYPE

Product number of this thermostat. Hold the Up button to view the software version.

Page 11

Thermostat Operation

•

Auxiliary Sensors Section A

The thermostat has a built-in sensor to measure air temperature at the thermostat. In addition to the built-in sensor, the thermostat has terminals to connect one auxiliary sensor. This sensor can either be a room sensor, floor sensor or an outdoor sensor.

Indoor Sensor 076 Outdoor Sensor 070Indoor Sensor 077 Slab Sensor 079

Room Sensor

A room sensor measures the air temperature in the zone that the thermostat controls. This measurement is used to calculate on times for heating operations.

If a built-in sensor reading is not required, the built-in sensor can be turned off. This removes the built-in sensor from the temperature average.

If the auxiliary sensor is installed, you must make the appropriate sensor input setting before the thermostat will recognize the sensor.

• Locate the Sensor setting in the Adjust menu.

Outdoor Sensor

An outdoor sensor can be connected to the thermostat. The temperature measured by an outdoor sensor is displayed on the thermostat. The thermostat communicates the outdoor temperature to all other devices on the tN4 network.

• Locate the Outdoor sensor under the Sensor item in the Adjust menu.

Floor Sensor

A floor sensor measures floor temperature in the zone that the thermostat controls. Floor temperature operates in a range between the Floor Minimum and Floor Maximum settings.

• Locate the Floor Minimum and the Floor Maximum settings in the Adjust Menu.

Mode of Operation Section B

You can operate the thermostat in either the heating or off modes by manually setting the Mode item to Heat or Off. The Mode item is found in the Adjust menu. When Mode is set to Off, the thermostat does not operate except to provide freeze protection.

• Locate the Mode item in the Adjust menu.

Mode of Operation

Page 12

Adjusting the Room Set Temperature (No Schedule) Section C1

If no schedule is being used, the heating temperature can be permanently adjusted from the View menu when viewing either the “Room” or “Room Set” items.

Wait 10

seconds

Press Up or Down

Button to adjust the

heating temperature.

Adjusting the Room Set Temperature (Schedule) Section C2

When using a schedule, the heating temperature for each schedule event can be permanently changed from the Adjust menu. There will be one “Set Heat” item in the Adjust menu for each scheduled event.

In a two event schedule, the events are:

Occ (Occupied)• UnOcc (UnOccupied)•

In a four event schedule, the events are:

Wake

• UnOcc

•

Occ

• Sleep

•

When scenes are used, an additional ‘Away’ event is available.

If a schedule is not in use, only the Set Heat Occ setting is available.

Current schedule

status indicates a

schedule is in use

Press Up or Down

Button to adjust the

“Wake” temperature.

Press Up or Down

Button to adjust the

“UnOcc” temperature

Temporary Room Set Adjustment (Schedule Only) Section C3

Pressing the up or down button while viewing the Room or Room Set temperature during scheduled operation allows for a temporary change in temperature. When the temporary change is in effect, the words “TMPY HOLD” are shown on screen.

The temporary change lasts for 3 hours but can be cancelled before this by pressing the Up and the Down buttons at the same time.

Wait 10

seconds

Press Up and Down buttons at the same

time to cancel the

temporary hold.

Page 13

Cycles Per Hour Section D

•

You can set the number cycles per hour (CPH) for the heating operation. The default setting for heating cycles per hour is automatic.

Heating CPH:

• When the thermostat is connected to a tN4 System

Control, the thermostat uses the CPH setting on the tN4 System Control for the Heating CPH.

• To manually set the cycles per hour when the thermostat is not connected to a tN4 System Control, go to the Adjust menu and select the Heat CPH item.

• When the thermostat is connected to a tN4 system with only thermostats, the SYNC setting synchronizes the operation of all the thermostats to 5 CPH.

Heating Terminal Units Section E

This thermostat supports Outdoor Reset characterized heating curves when used in hydronic heating systems. By setting the correct terminal unit setting, the thermostat can improve the operation of the heating system. Each stage of heat has its own terminal unit setting.

Control (CTRL)

Selecting Control as the terminal unit setting on the thermostat causes the thermostat to adopt the tN4 System Control’s terminal unit setting.

Hydronic Radiant Floor 1 (HRF1)

Terminal type for a heavy, or high mass, hydronic radiant floor system. This type of a hydronic radiant floor is embedded in either a thick concrete or gypsum pour. This heating system has a large thermal mass and is slow acting.

Fin–tube Convector (CONV)

A convector terminal unit is made up of a heating element with fins on it. This type of terminal unit relies on the natural convection of air across the heating element to deliver heated air into the space. The amount of natural convection is dependant on the supply water temperature to the heating element and the room air temperature.

Radiator (RAD)

Hydronic Radiant Floor 2 (HRF2)

Terminal type for a light, or low mass, hydronic radiant floor system. Most commonly, this type of radiant heating system is either attached to the bottom of a wood sub floor, suspended in the joist space, or sandwiched between the subfloor and the surface. This type of radiant system has a relatively low thermal mass and responds faster than a high mass system.

Fancoil (COIL)

A fancoil terminal unit or air handling unit (AHU) consists of an hydronic heating coil and either a fan or blower. Air is forced across the coil at a constant velocity by the fan or blower and is then delivered into the building space.

A radiator terminal unit has a large heated surface that is exposed to the room. A radiator provides heat to the room through radiant heat transfer and natural convection.

Baseboard (BASE)

A baseboard terminal unit is similar to a radiator, but has a low profile and is installed at the base of the wall. The proportion of heat transferred by radiation from a baseboard is greater than that from a fin-tube convector.

Other (OTHR)

In applications where a non-hydronic heating system (furnace, electric baseboard, etc.) is installed, set the terminal unit to other.

Page 14

Heating Operation Section F

•

Indoor Temperature Feedback

Indoor feedback applies when the thermostat is connected to a tN4 network with a tN4 System Control. Indoor temperature feedback fine tunes the water temperature of the system based on the requirements of the thermostats.

Each thermostat tells the tN4 System Control the water temperature that it requires to heat its zone.

• If the zone is becoming too cool, the thermostat asks for a higher water temperature.

• If the zone is becoming too warm, the thermostat asks for a cooler water temperature.

The tN4 System Control provides the highest water temperature required by all of the thermostats.

• The thermostat with the highest water temperature requirement stays on 100% of its cycle.

• The remaining thermostats stay on for a percentage of their cycles.

100%

On Time

85%

On Time

90%

On Time

During light heating loads, overheating can occur due to the minimum floor temperature setting.

During heavy heating loads, the maximum floor temperature setting limits the on time of the Heat relay. In this situation, underheating can occur.

One-Stage PWM Heating

Set Heat

Warmer

Heat

Cycle Length

System Pump Operation

When a tN4 System Control is used, each tN4 bus has a system pump.

• If the tN4 bus’s system pump must turn on when the Heat relay is on, set the H1 Pump setting in the Adjust menu to On.

Reset Water Temperature

One Stage Heating

Room Sensor Only

When operating with only an room sensor, the on time for the Heat relay is calculated to satisfy the requirements of the room sensor.

Floor Sensor Only

When operation with only a floor sensor, the on time for the Heat relay is calculated to satisfy the requirements of the floor sensor. The floor temperature varies between the floor minimum and the floor maximum settings.

Note: Operation with only a floor sensor can lead to either overheating or underheating of the space.

Room and Floor Sensor

When operating with both a room and floor sensor, the thermostat calculates an on time for the Heat relay to satisfy the floor sensor and an on time to satisfy the room sensor. The Heat relay operates for the longer of these two on times.

Heat 1 Pump = OFF Zone Manager: Zone Group DIP = On

Operated by Zone Manager

Zone Group

Operated by tN4 System Control

Zone Group

Heat 1 Pump = On Zone Manager: Zone Group DIP = OFF

Thermal Motor Zone Valves

When using a thermal motor zone valve, system pump operation must be delayed to allow the thermal motor zone valve to fully open.

• When thermal motor zone valves are used set the Heat 1 Delay setting to On.

Page 15

Cool Groups Section G

•

Optimum Stop

•

The thermostat can operate with other thermostats on a tN4 network in a cool group. When operating as a cool group, the air temperature readings of all the thermostats in the group are averaged. A single thermostat controls the operation of the cooling equipment and is called the cool group master. This operation is based on the averaged temperature of all the thermostats in the cool group.

• To assign a thermostat as the cool group master of group 1, go to the Adjust menu. Select Cool Master and set to 01.

• To assign a thermostat as a cool group member of group 1, go to the Adjust menu. Select Cool Member item and set to 01.

• Repeat the same steps to set up additional cooling groups.

In a cool group, one thermostat is assigned as the cool group master. The cool group master operates the cooling

Cool Group 1 Cool Group 2

equipment for the group. The other thermostats are assigned as members of the cool group. Cool groups are assigned using a number 1 through 16 and there can be up to a maximum of 16 cool groups on the entire tN4 network.

Each cool group can have up to 24 members.

MasterMaster MemberMemberMember

tN4

Setting the Schedule Section H

Master Schedule

If the thermostat is connected to other thermostats, then the thermostat can follow a master schedule. You can set up a maximum of four master schedules on the tN4 network. A master schedule is available to all devices on the tN4 network. Master schedules simplify installation since one master schedule may be used by multiple devices.

To follow a master schedule

1. Assign the thermostat to follow a master schedule, by setting the Heat Schedule menu item in the Schedule menu to Member (MBR) 1 to 4.

Members of

Schedule 1

Zone 1 2 3 4 5 6 7 8

Master

Schedule 1

None

Zone

Schedule

Master

Schedule 2

Members of

Schedule 2

Optimum Start / Stop Section I

When using a schedule, there is a time lag as one event transitions to another. The four possible transitions are:

• Wake to Unoccupied

• Unoccupied to Occupied

• Occupied to Sleep

• Sleep to Wake

When an outdoor temperature measurement is available, the Optimum Start / Stop feature predicts how long the temperature transition takes. This allows the thermostat to operate the heating or cooling system before the scheduled event in order to have the room at the desired temperature at the scheduled event time.

When an outdoor temperature measurement is not available, then the Optimum Start / Stop feature operates slightly differently. First, the thermostat predicts how long the transition takes when changing from a low temperature to a high temperature. It does not track transitions where the temperature setting drops from a high temperature to a low temperature.

• Locate the Optimum Start / Stop setting in the Adjust menu.

Without Optimum Start/Stop

10P.M. 11P.M. 8A.M. 11A.M.

Room Tem p.

Delay Period

9P.M. 10P.M. 5A.M. 8A.M.

Room Tem p.

Optimum Stop

Delay Period

Setback

Period

Optimum Start/Stop

Setback

Period

Optimum Start

Recovery Period

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Recovery Period

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Page 16

Scenes Section J

•

Scenes are a function that is available on the thermostat.

• To use the scene function, go to the Scene menu and set the Scene setting to On.

Scenes are a method of changing the temperature throughout an entire building from a single thermostat. A permanent scene remains in place until another scene is selected. When a temporary scene is selected (Scenes 6, 7, 8), a timer counts down and when it times out, devices return to the last permanent scene selected.

See the Scene table for details regarding the timing of

typical installation, the thermostat will be set to follow the scheduled event in the Permanent 1 scene.

• Factory Set Scenes: Scenes 2, 3 and 6 are factory set and force the thermostat to the Away, Unoccupied or the Occupied temperature respectively.

• Customized Scenes: You can customize Scenes 1, 4, 5, 7, and 8 to either follow the scheduled event, or the temperature can be forced to the Wake, Unoccupied, Occupied, Sleep, or the Away temperature.

Note: If no schedule is available, the Scene menu selections are limited to Occupied and Away

Scenes. There are a total of eight Scenes available.

• Default Scene: The default scene is Permanent 1. In a

Scene Description Thermostat Operation

1 Permanent 1 Scheduled event, Wake, Unoccupied, Occupied, Sleep, Away 2 Permanent Away 2 Away

DHW demands are ignored (applies to outdoor reset modules)

Setpoint demands operate (applies to outdoor reset modules) 3 Permanent Unoccupied 3 Unoccupied 4 Permanent 4 Scheduled event, Wake, Unoccupied, Occupied, Sleep, Away 5 Permanent 5 Scheduled event, Wake, Unoccupied, Occupied, Sleep, Away 6 Temporary Occupied 6 Occupied for 3 hours 7 Temporary 7 Scheduled event, Wake, Unoccupied, Occupied, Sleep, Away for 4 hours 8 Temporary 8 Scheduled event, Wake, Unoccupied, Occupied, Sleep, Away for 8 hours

Example 1:

A house is normally in scene Permanent 1. There is a master bedroom that operates on a schedule and there is a guest bedroom that is normally set to Unoccupied. When a guest arrives, the scene changes to Permanent 4. Scene 4 has been pre-programmed to change the guest room to operate on the schedule.

Master bedroom thermostat:

Scene Permanent 1 is set to Schedule. Scene Permanent 4 is set to Schedule.

Guest bedroom thermostat:

Scene Permanent 1 is set to Unoccupied. Scene Permanent 4 is set to Schedule.

Scene 1

70°F

Master Bedroom Scheduled Event

62°F

Scene 4

70°F

Master Bedroom Scheduled Event

70°F

Example 2:

A house is normally in scene Permanent 1. There are bedrooms upstairs and the entertainment area is downstairs. The occupants are entertaining guests for an evening and scene Temporary 7 is selected. This causes the upstairs thermostats to operate at the Unoccupied temperature and the downstairs to operate and the Occupied temperature for four hours.

Upstairs thermostats:

Scene Permanent 1 is set to Schedule. Scene Temporary 7 is set to Unoccupied.

Downstairs thermostats:

Scene Permanent 1 is set to Schedule. Scene Temporary 7 is set to Occupied.

Scene 1

70°F

Upstairs

Scheduled Event

70°F

Scene 7

Upstairs

UnOccupied

62°F

for

4hr

70°F

Guest Bedroom

UnOccupied

Guest Bedroom

Scheduled Event

Downstairs

Scheduled Event

Downstairs

Scheduled Event

Page 17

Away Hold Section K

•

To set the temperature while the occupants are away, use the Permanent Away 2 scene. This scene changes all thermostats on the network to the Away temperature setting. If there is an Outdoor Reset Module on the tN4 communication bus, the boiler no longer responds to domestic hot water calls for heat. Setpoint demands continue to operate as in the Occupied mode.

Away Temperatures

By default, the Set Heat Away temperature is set to 62°F (16.5°C).

• To set the Away temperature, go to the Adjust menu and select the Set Heat Away item. The Access Level must be set to Installer or Advanced.

Offset Section L

This thermostat uses a high quality temperature thermistor and is calibrated to accurately read the room temperature. However, if you wish to fine tune the measured room

temperature, use the Offset feature to increase or decrease room temperature in tenths of degrees.

• Locate the Offset setting in the Misc menu.

Units of Temperature Section M

The thermostat can display temperatures in either Fahrenheit (°F) or in Celsius (°C).

• Locate the units setting in the Misc menu.

Backlight Section N

Use the thermostat’s backlight to increase the visibility of the display. You can set the backlight to On, Temporary, or Off. If you select On, the backlight remains permanently on. If you select Temporary, the backlight comes on for 30 seconds when a button is pressed. If you select Off the

backlight remains permanently off. By default, the backlight is set to Temporary.

• Locate the Backlite setting in the Misc menu.

tN4 Address Section O

When connected to other tN4 devices through a tN4 bus, the thermostat is automatically assigned a network address. The tN4 address is useful when trying to correct bus error open and short circuits.

The address includes the bus water temperature designation and a device number. The bus water temperature designations available are Boiler, Mix 1, Mix 2, etc. The device number can range from 1 to 24. If the thermostat is operating as a member of a thermostat-only network, the thermostat does not have an address and the address item in the MISC menu is not available.

The device number determines the heating priority for each zone. A thermostat with device number 1 has a higher priority

than device number 24. The tN4 address allows the tN4 system control to shut off low priority zonezs when the heat source is unable to heat all zones simultaneously. In some cases, the installer may want to change the thermostat’s address in order to change the thermostat’s priority relative to other thermostats.

Note: Keep track of manually set tN4 addresses. When a tN4 address is manually set, tN4 thermostats using the Auto Address setting will automatically be assigned new addresses.

If two thermostats are manually set to the same address, an error message will appear. The error remains until one of the addresses is manually changed to a vacant address.

Pump Exercising Section P

When connected to a tN4 system control, the thermostat exercises the pump relays for 10 seconds every 3 days. Exercising helps prevent pump seizure. While the thermostat is exercising, the display shows “Test”.

Exercising does not occur when:

• Mode of Operation is set to Off.

• Heat Source is set to Other.

• DIP switch 2 is set to None.

Page 18

Error Messages

Local Errors and Device Errors

Error messages are used to indicate a problem somewhere in the system. There are two types of error messages: Local Errors and Device Errors.

A Local Error indicates an error specific to a device. For example, a thermostat with a sensor short circuit will show a Sensor Short Error on its display. No other devices will show this specific error (unless they also have a sensor short circuit).

A Device Error is used to indicate that there is a local error somewhere else on the system. For example, if a thermostat has a sensor short circuit, that thermostat will show a Local Error indicating specifically what the problem is. All other devices on the network will show Device Errors, indicating the address of the device with the Local Error. In other words, Device Errors are nothing more than pointers, showing you that there is a local error somewhere on the system and where to find it.

Error Priority

Only one error can be shown on a particular device at a time. If there is more than one error on the system, the highest priority error will be the one that is shown. The table on pages 19 and 20 lists error messages in order of high priority to low priority.

How to Locate an Error Message

If the warning symbol (flashing circle with exclamation mark) is visible on screen, this indicates that there is an error somewhere on the system. To view the error message, you must first put the control into the Advanced or Installer access level (available in MISC menu). When an error message is present, it is available as an item in the VIEW menu.

While in the View Menu, press the item button until the error message is displayed. You may have to advance through several View Menu items before the message is displayed.

If the error message is a Device Error (if “DEV” or “DEV ERR” is shown on screen), read the address shown and go to the device with that address. That device will have a Local Error indicating specifically what the problem is. When the problem is corrected, the error message will automatically clear.

Access Levels

In some cases, it is not desirable to let day-to-day users view error messages. In these cases, by lowering the access level of the thermostat or setpoint device to ‘User’ or lower, error messages cannot be seen in the View menu and the warning symbol only appears if there is a local error or a device error caused by a critical error on another device. If there is an error message on the system that you cannot find on a particular thermostat, make sure that the access level on that thermostat is set to Installer or Advanced.

Sensor Temperature Errors

If a control is unable to display a temperature due to a sensor malfunction or communication problem, the word “Err” is displayed in place of the temperature. This usually indicates that there is an error somewhere on the system but is not the actual error message. Keep looking through the View menu to find the actual error message.

Device is attempting to show floor temperature but cannot because of

sensor problem.

Keep pressing the Item button to find the actual

error message

Once error is corrected, the temperature can be

displayed

Page 19

Error Messages (1 of 2)

Error Message Description

ADJUST ERROR

The thermostat failed to read the Adjust menu settings from memory and has reloaded the factory default settings. Operation stops until you check the Adjust menu settings. The thermostat provides freeze protection only until you check the Adjust menu items.

Note: To clear the error, the access level must be set to Advanced before checking the settings in the Adjust menu.

SCENE ERROR

The thermostat failed to read the Scene menu settings from memory and has reloaded the factory default settings. The thermostat continues to operate while displaying this error.

Note: To clear the error, the access level must be set to Advanced before checking the settings in the Scene menu.

SCHEDULE ERROR

The thermostat failed to read the Schedule menu settings from memory and has reloaded the factory default settings. The thermostat continues to operate while displaying this error.

Note: To clear the error, the access level must be set to Advanced before checking the settings in the Schedule menu.

MISCELLANEOUS ERROR

The thermostat failed to read the Miscellaneous menu settings from memory and has reloaded the factory default settings. The thermostat continues to operate while displaying this error.

Note: To clear the error, the access level must be set to Advanced before checking the settings in the Miscellaneous menu.

tN4 BUS ERROR

Due to a short or open circuit, communication is lost with the tN4 bus. Check wires for damage. Check ‘C’ and ‘R’ wires for polarity. All devices on the tN4 bus will display this error if there is a short circuit. If the error is only on this device, check for an open circuit between the thermostat and Zone Manager. Once the error is corrected press any button to clear the error.

NO tN4 SYSTEM CONTROL

The tN4 System Control DIP switch is set to tN4 System Control and the thermostat does not detect the tN4 System Control. Once the tN4 System Control is detected, this error will clear automatically.

Note: If a tN4 System Control is not installed, set the tN4 System Control DIP switch to None.

ADDRESS ERROR

Two thermostats have been manually set to the same address. The thermostat continues to operate with this error but does not communicate with the tN4 bus. To clear this error select an unused address. This can be done automatically by setting the Address item to Auto.

DEVICE LIMIT

You have installed more than 24 devices on the tN4 bus. You must remove the additional devices and move them to a different bus if possible.

DIP SWITCH 2 MODE

The tN4 System Control DIP switch is set to None and the thermostat has detected a tN4 System Control. The thermostat does not operate until this error is corrected. The tN4 System Control DIP switch must be set to tN4 System Control.

Page 20

Error Messages (2 of 2)

Error Message Description

ROOM SENSOR SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read the built-in sensor. If the Auxiliary Sensor is set to ROOM, or the thermostat is connected to a tN4 System Control, the thermostat continues to operate. Otherwise, the thermostat stops operation. To clear the error, press either the Menu or Item button. If the error does not clear, contact your tekmar sales representative.

ROOM SENSOR OPEN CIRCUIT

Due to an open circuit, the thermostat failed to read the built-in sensor. If the Auxiliary Sensor is set to ROOM, or the thermostat is connected to a tN4 System Control, the thermostat continues to operate. Otherwise, the thermostat stops operation. To clear the error, press either the Menu or Item button. If the error does not clear, contact your tekmar sales representative.

AUXILIARY SENSOR SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read the Auxiliary Sensor. The thermostat displays the error and continues to operate unless:

No other Room sensors are available and the thermostat is not connected to a tN4 System control. Then the thermostat stops operation.

No other Floor sensors are available and the Floor Maximum is not set to Off, then the H1 contact no longer operates.

Locate and repair the problem as described in the Data Brochure D 070. Once the error is corrected, press any button to clear the error.

AUXILIARY SENSOR OPEN CIRCUIT

Due to an open circuit, the thermostat failed to read the Auxiliary Sensor. The thermostat displays the error and continues to operate unless:

No other Room sensors are available and the thermostat is not connected to a tN4 System control. Then the thermostat stops operation.

No other Floor sensors are available and the Floor Maximum is not set to Off, then the H1 contact no longer operates.

Locate and repair the problem as described in the Data Brochure D 070. Once the error is corrected, press any button to clear the error.

SENSOR ERROR

All of the sensors have been set to Off or None including the built-in sensor and the tN4 System Control DIP switch is set to None. The thermostat stops operation.

Turn on at least one sensor or connect the thermostat to a tN4 system control and set the tN4 System Control DIP switch to tN4 System Control.

COOL GROUP MEMBER ERROR

The thermostat can no longer detect its cool group master. Check the communication connections for open or short circuits. Once the cool group master has been detected, the error message clears.

SCHEDULE MEMBER ERROR

The thermostat can no longer detect its schedule master. Check the communication connections for open or short circuits. Once the schedule master has been detected, the error message clears.

DEVICE ERROR AT ADDRESS #:##

#:## is the address of the device with the error. The bus number displays before the colon, and the device number displays after. Go to the device with the address displayed.

Possible Addresses:

01 to 24 - Device Error on Thermostat only network b:01 to b:24 - Device Error on Boiler Bus 1:01 to 1:24 - Device Error on Bus 1 2:01 to 2:24 - Device Error on Bus 2 3:01 to 3:24 - Device Error on Bus 3 CTRL - Device Error on System Control MIX1 - Device Error on Mixing Expansion Module (See System Control for local error) MIX2 - Device Error on Mixing Expansion Module (See System Control for local error) MIX3 - Device Error on Mixing Expansion Module (See System Control for local error)

Page 21

Notes

Page 22

Notes

Page 23

Notes

Page 24

Cleaning the Thermostat

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.

Limited Warranty and Product Return Procedure

Limited Warranty The liability of tekmar under this

warranty is limited. The Purchaser, by taking receipt of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time of such Product sale and acknowledges that it has read and understands same.

The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s passthrough warranty which the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date.

The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract.

Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NON-VIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.

The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers.

tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A.

Head Office: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 (250) 545-7749 Fax. (250) 545-0650 Web Site: www.tekmarcontrols.com

24 of 24

Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact information regarding the appropriate Representative.

All specifications are subject to change without notice.

Printed in Canada. D 541 - 08/07.