tekmar 546 Installation

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Page 1

- Data Brochure

tekmarNet®4 Thermostat 546

D 546

07/08

Information

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to match

application

Application

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Design your

mechanical

applications

Rough In

Rough-in

instructions

Wiring

wiring

Wiring

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Wiring and

installation of

specific control

Data

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Control settings

and sequence of

operation

Job

Record

Record settings &

wiring details for

future reference

Introduction

The tekmarNet®4 thermostat 546 operates two stages of heating equipment, two stages of cooling equipment, and two fans. The fan operation includes logic to operate ventilation. The 546 can operate as a stand alone device, or communicate with a group of tekmarNet®4 thermostats.

Features

• tN4 Compatible

• Automatic Heat / Cool Switchover

• 3 Auxiliary Temperature Sensor Inputs

• Pulse Width Modulation

• Programmable Setback and Setup Scheduling

• Scenes

• Cooling Group

• Radiant Base Load

Y2 Y1 Rc G1 G1

Com

tN4

Rh1 Rh2

W2 G2 G2

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA Relays: 24 V (ac) 2 A

992-01

Meets Class B: Canadian ICES, FCC Part 15

Terminal Functions

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Com

Sensor Common

Sensor 2

No Power

Sensor 1 To isolate relay, cut jumper

tN4 C R Rh1 W1 Rh 2 W2 G2 G2

DIP Switch Functions

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

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

Time Menu ............................................................13

Scene Menu .......................................................... 14

Schedule Menu ..................................................... 16

Monitor Menu ........................................................ 19

Test Menu ............................................................21

Miscellaneous Menu ............................................22

Testing .........................................................................23

Thermostat Operation ..................................................24

Auxiliary Sensors .................................................24

Heat or Cool Mode of Operation ..........................25

Adjusting the Temperature ...................................25

Cycles Per Hour ...................................................26

Heating Terminal Units .........................................27

Heating Operation ................................................28

Cooling Operation ................................................30

Cool Groups .........................................................30

Fan Operation ...................................................... 31

Filter Change .......................................................32

Time Clock ...........................................................32

Setting the Schedule .............................................33

Optimum Start / Stop ...........................................34

Scenes .................................................................34

Away Hold ............................................................35

Radiant Base Load ..............................................36

Offset ...................................................................36

Warm Weather Shutdown ....................................36

Cold Weather Shutdown ......................................36

Units of Temperature ............................................36

Backlight .............................................................. 37

tN4 Address .........................................................37

Pump Exercising ................................................... 37

Error Messages ............................................................38

Cleaning the Thermostat .............................................43

Warranty .......................................................................44

Display and DIP Switches

Dip Switches

tN4 System Control (DIP Switch #2)

A tN4 System Control is a control, not a thermostat, that the 546 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 546.

• 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.

Y2 Y1 Rc G1 G1

Com

tN4

Rh1 Rh2

W2 G2 G2

Note: The tN4 System Control’s Lock / Unlock DIP switch overrides the Lock / Unlock DIP switch on the 546. 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 546 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

Status Field

Displays the current status

of the control’s inputs, outputs and operation

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

In the following menu tables, the access level the item is visable 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 546, 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

Number Field

Displays the current value of the selected item

Symbols Description

MODE OF OPERATION

Displays whether the device is in heating or cooling mode.

FIRST STAGE HEAT

First stage heating is operating.

SECOND STAGE HEAT

Second stage heating is operating.

FIRST STAGE COOL

First stage cooling is operating.

SECOND STAGE COOL

Second stage cooling is operating.

FAN 1

Fan 1 is operating.

FAN 2

Fan 2 is operating.

SCHEDULE MASTER

Indicates that this thermostat is a schedule master.

tN4 COMMUNICATION

A tN4 network is detected.

COOL GROUP MASTER

This thermostat is a cool group master.

LOCK

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

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.

FILTER

Replace the filter.

SCHEDULED EVENT

Displays the current scheduled event.

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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 546.

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

Eight menus are available:

• View

• Adjust

• Time

• Scene

• Schedule

• Monitor

• Test

• 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 22.

Continue to next Menu

Continue to next Item

Page 5

Display Menus

View Menu (1 of 2)

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)

-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

SEC

LTD

USER

INST

ADV

USER

INST

ADV

SEC

LTD

USER

INST

ADV

Description

COOL AVERAGE SECTION D

Average room temperature of the cool group master and members.

Note: This item is only available when Cooling Stage is set to 1 or 2 and this thermostat is a cool group master.

ROOM SECTION A

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

is set to On or Sensor 1, 2, or 3 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 Sensor 1, 2, or 3 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)

-58 to 212°F

(-50.0 to 100.0°C)

-58 to 212°F

(-50.0 to 100.0°C)

Continued on next page.

LTD

USER

INST

ADV

USER

INST

ADV

INST

ADV

FLOOR SECTION A

Current floor temperature. Note: This item is only available when Sensor 1, 2,

or 3 is set to Floor.

REMOTE SENSOR SECTION A

Current temperature at the remote sensor location. Note: This item is only available when Sensor 1 is

set to Remote.

COIL SENSOR SECTION A

Current temperature at the coil sensor. Note: This item is only available when Sensor 3 is

set to Coil.

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View Menu (2 of 2)

Item Field Range

-58 to 212°F

(-50.0 to 100.0°C)

-22 to 266°F

VIEW MENU

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

(-30.0 to 130.0°C)

Access

INST

ADV

INST

ADV

Adjust Menu (1 of 7)

Description

DUCT SENSOR

Current temperature at the duct sensor. Note: This item is only available when Sensor 3 is

set to Duct.

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.

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

SECTION A

SECTION F

Item Field Range Access Description

ADJUST MENU

Wake

UnOccupied

Occupied

YES, NO

Default = NO

OFF, HEAT,

AUTO, COOL

Default = AUTO

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)

USER

INST

ADV

USER

INST

ADV

LTD

USER

INST

ADV

CLEAR FILTER SECTION J Indicates when to reset the air filter timer. Note: This item is only available when Filter is set to

ON, the air filter timer has expired and the Fan Mode is set to 1 through 5.

MODE OF OPERATION SECTION B Mode of operation of the thermostat or cool group.

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.

Away is only available when Scenes are turned on.

Sleep

Away

Continued on next page.

Default = 62°F (16.5°C)

Page 7

Adjust Menu (2 of 7)

Item Field Range Access Description

Wake

UnOccupied

Occupied

50 to 100°F

(10.0 to 38.0°C)

Default = 78°F (25.5°C)

Default = 85°F (29.5°C)

Default = 78°F (21.0°C)

LTD

USER

INST

ADV

SET COOL SECTION C

Select the cooling room 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.

Away is only available when Scenes are turned on.

Sleep

Away

Wake

UnOccupied

Occupied

Sleep

ADJUST MENU

Default = 85°F (29.5°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)

Default = OFF

40 to 122°F

(4.5 to 50.0°C) Default = 85°F

(29.5°C)

OFF, ROOM,

FLOR (Floor),

REM (Remote)

Default = OFF

LTD

USER

INST

ADV

INST

ADV

FLOOR MINIMUM SECTION A

Select the minimum floor temperature for each event.

Note: This item is only available when Sensor 1, 2, or 3 is set to Floor. At the Limited Access Level, you can only adjust the temperature +/-3°F (1.5°C) from the last setting.

FLOOR MAXIMUM SECTION A

Maximum floor temperature. Note: This item is only available when Sensor 1, 2,

or 3 is set to Floor.

SENSOR 1 SECTION A

Select the type of sensor connected to auxiliary sensor input 1.

OFF, ROOM,

FLOR (Floor),

OUT (Outdoor)

Default = OFF

OFF, ROOM,

FLOR (Floor),

COIL, DUCT

Default = OFF

Continued on next page.

INST

ADV

INST

ADV

SENSOR 2 SECTION A

Select the type of sensor connected to auxiliary sensor input 2.

SENSOR 3

Select the type of sensor connected to auxiliary sensor input 3.

SECTION A

Page 8

Adjust Menu (3 of 7)

Item Field Range Access Description

OFF, ON

Default = ON

SYNC, AUTO

2 to 12

Default = AUTO

CTRL, HRF1, HRF2,

COIL, CONV, RAD,

BASE, OTHR ,FURN

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 for first stage heat.

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 first stage 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, CTRL, HRF1,

HRF2, COIL, CONV,

RAD, BASE, OTHR,

FURN

Default =CTRL

BOIL, MIX1, MIX2,

MIX3

Default = BOIL

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 first stage heat 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.

HEAT 2 TERMINAL SECTION E

Select the type of heating terminal for second stage heat. If NONE is selected, the second stage heat is disabled.

Note: If CTRL is selected, the terminal unit selected on the tN4 System Control is used.

HEAT 2 SOURCE SECTION F

Select the tN4 bus on which the second stage heat zone operates. This setting determines water temperature and system pump operation.

Note: This item is only available when the H2 Terminal item is set to CTRL, HRF1, HRF2, Fan Coil, Convector, Radiator, or Baseboard.

Continued on next page.

Page 9

Adjust Menu (4 of 7)

Item Field Range Access Description

OFF, ON

Default = ON

OFF, ON

Default = OFF

NONE, 1 to 16

Default = NONE

NONE, 1 to 16

Default = NONE

INST

ADV

INST

ADV

HEAT 2 PUMP

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

Note: This item is only available when the H2 Terminal item is set to CTRL, HRF1, HRF2, Fan Coil, Convector, Radiator, or Baseboard.

HEAT 2 DELAY SECTION F

Select whether the system, primary, or mixing pump on a tN4 System Control is delayed to allow a second stage heat 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 H2 Terminal item is set to CTRL, HRF1, HRF2, Fan Coil, Convector, Radiator, or Baseboard.

COOL MASTER SECTION H

Select the cool group for which this thermostat is the master. Select None if this thermostat is not a cool group master.

Note: This item is only available when the thermostat is connected to a tN4 network and the Cool Stage is set to 1 or 2.

COOL MEMBER SECTION H

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, Cool Master is set to NONE and the Cool Stage is set to NONE.

SECTION F

ADJUST MENU

Continued on next page.

NONE, 1, 2

Default = 2

0:30 to 6:00 min

Default = 2:00

0:30 to 10:00 min

Default = 5:00

AUTO, 2 to 12

Default = AUTO

INST

ADV

COOL STAGES SECTION G

Select the number of cooling stages. Select None if cooling is not used.

MINIMUM COOL RUN TIME SECTION G

Select the minimum running time for the cooling equipment.

Note: This item is only available when the Cool Stage is set to 1 or 2.

MINIMUM COOL OFF TIME

Select the minimum off time for the cooling equipment.

Note: This item is only available when the Cool Stage is set to 1 or 2.

COOL CYCLES PER HOUR SECTION D

Select the number of cooling cycles per hour. Note: This item is only available when the Cool Stage

is set to 1 or 2.

SECTION G

Page 10

Adjust Menu (5 of 7)

Item Field Range Access Description

10 to 180 min

Default = 30

HEAT, COOL

Default = COOL

NONE, 1 to 5

Default = 1

OFF, ON

Default = OFF

ADV

INST

ADV

INST

ADV

INTERLOCK

Select how long heating must be off before cooling starts.

Note: This item is only available when the Cool Stage is set to 1 or 2.

PRIORITY HEATING OR COOLING SECTION G

Select whether heating has priority or cooling has priority.

Note: This item is only available when the Cool Stage is set to 1 or 2.

FAN MODE SECTION I

Select the operation of the Fan 1 and Fan 2 outputs.

FAN 2 VENTILATION SECTION I

Select whether the Fan 2 output provides ventilation. Note: This item is only available when the Fan Mode

is set to NONE, 1 or 2.

SECTION G

ADJUST MENU

Wake

UnOccupied

Occupied

OFF, ON

Default = OFF

OFF, 1 to 60 min

Default = OFF

AUTO, OFF,

10% to 90%, ON

Default = AUTO

ADV

LTD

USER

INST

ADV

FAN 1 VENTILATION SECTION I

Select whether Fan 1 output is required to operate while Fan 2 output provides ventilation.

Note: This item is only available when the Fan Mode is set to None, 1 or 2 and F2 Vent is set to On.

VENTILATION PRE-VENT SECTION I

Select how long the ventilation operates continuously prior to the Wake or Occupied events.

Note: This item is only available when the Fan Mode is set to None, 1 or 2 and F2 Vent is set to On.

FAN OPERATION SECTION I

The minimum percentage of time the ventilation fan operates during each event.

Auto operates with heat or cool. On operates continuously. % sets a minimum On time for each cycle.

Sleep

Continued on next page.

Page 11

Adjust Menu (6 of 7)

Item Field Range Access Description

ADJUST MENU

OFF, 70 to 180°F

(OFF, 21.0 to 82.0°C)

Default = 110°F

(43.0°C)

40 to 80°F, OFF

(4.5 to 26.5°C, OFF)

Default = OFF

0:00 to 2:00 min

(10 sec increments)

Default = 0:30

0:00 to 3:00 min

(10 sec increments)

Default = 0:30

70 to 160°F, OFF

(21.0 to 71.0°C, OFF)

Default = 110°F

(43.0°C)

ADV

HEAT COIL MINIMUM

Set the minimum coil temperature before turning on the fan for heating. This allows the fan coil to heat up and prevents the fan from blowing cold air.

Note: This item is only available when H1 or H2 Terminal is set to Coil, Sensor 3 is set to Coil and Fan Mode is set to 2, 3, or 5.

COOL COIL MAXIMUM SECTION I

Set the maximum coil temperature before turning on the fan for cooling. This allows the fan coil to cool off and prevents the fan from blowing hot air.

Note: This item is only available when Cool Stage is set to 1 or 2, Sensor 3 is set to Coil and Fan Mode is set to 1 to 5.

FAN DELAY SECTION I

Set the fan’s delay time after a heating zone calls for heat. This allows the fan coil to heat up and prevents the fan from blowing cold air.

Note: This item is only available when H1 or H2 Terminal is set to Coil, Sensor 3 is not set to Coil and Fan Mode is set to 2, 3, or 5.

FAN PURGE SECTION I

Set how long the fan operates after a call for heating or cooling ends. This purges any heat or cold remaining in the fan coil.

Note: This item is only available when H1 or H2 Terminal is set to Coil, Sensor 3 is not set to Duct and Fan Mode is set from 1 to 5.

HEAT PURGE FAN SECTION I

Set the minimum duct temperature. This purges heat from the coil after the call for heat is removed.

Note: This item is only available when H1 or H2 Terminal is set to Coil, Sensor 3 is set to Duct and Fan Mode is set to 2, 3 or 5.

SECTION I

COOL PURGE FAN SECTION I

OFF, 40 to 70°F

(OFF, 4.5 to 21.0°C)

Default = 60°F

(15.5°C)

OFF, 200 to 2000 hr

Default = 500 hr

Continued on next page.

ADV

INST

ADV

Set the maximum duct temperature. This purges cooling from the coil after the call for cooling is removed.

Note: This item is only available when Cool Stage is set to 1 or 2, Sensor 3 is set to Duct and Fan Mode is set to 1 to 5.

FILTER SECTION J

Set the number of hours Fan 1 should operate before you replace the filter. When the time expires, the filter symbol appears.

Note: This item is only available when the Fan Mode is set to 1 to 5 or F2 Vent is set to ON.

Page 12

Adjust Menu (7 of 7)

Item Field Range Access Description

NONE, ZONE, CTRL

Default = CTRL

ADV

WARM WEATHER SHUT DOWN SECTION R Set the outdoor temperature at which warm weather

shutdown occurs. Select whether the thermostat follows the tN4 System Control’s or the zone’s WWSD for scheduled events.

ADJUST MENU

40 to 100°F, OFF

(4.5 to 38.0°C, OFF)

Default = 72°F

(22.0°C)

40 to 100°F, OFF

(4.5 to 38.0°C, OFF)

Default = 60°F

(15.5°C)

OFF, 35 to 100°F

(OFF, 1.5 to 38.0°C)

Default = OFF

OFF, 35 to 100°F

(OFF, 1.5 to 38.0°C)

Default = OFF

INST

ADV

INST

ADV

WWSD OCCUPIED AND WAKE SECTION R

Set the Warm Weather Shut Down (WWSD) temperature during Occupied and Wake events.

Note: This item is only available when WWSD is set to Zone.

WWSD UNOCCUPIED AND SLEEP SECTION R

Set the Warm Weather Shut Down temperature during Unoccupied and Sleep events.

Note: This item is only available when WWSD is set to Zone.

CWSD OCCUPIED AND WAKE SECTION S

Set the Cold Weather Shut Down (CWSD) temperature for the cooling system during the Occupied and Wake events.

Note: This item is only available when Cool Stage is set to 1 or 2.

CWSD UNOCCUPIED AND SLEEP SECTION S

Set the Cold Weather Shut Down temperature for the cooling system during the Unoccupied and Sleep events.

Note: This item is only available when Cool Stage is set to 1 or 2.

HEAT, COOL,

H/C, OFF

Default = H/C

Lo, 2, 3, Hi

Default = Hi

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

INST

ADV

OPTIMUM START / STOP SECTION M

Select whether to use Optimum Start / Stop for heating, cooling, or both.

Note: This item is only available when either a heating schedule and / or a cooling schedule is selected.

RADIANT BASE LOAD SECTION P

Select the radiant heating load relative to the overall heating load.

Note: This item is only available when H1 Terminal is set to HRF1 or HRF2. H2 Terminal is set to Coil, Convector, Radiator, Baseboard or Other, and Sensor 1, 2, 3 are not set to FLOR.

Page 13

Time Menu (1 of 2)

The Time menu items set the time clock, day and date.

Item Field Range

TIME MENU

SUNDAY, MONDAY,

TUESDAY,

WEDNESDAY,

THURSDAY, FRIDAY,

SATURDAY

Default = MONDAY

Default = JAN 01 2005

12:00 to :59

Default = :12:00 AM

12:00 AM to 11:59 PM or

00:00 to 23:59

Default = 12:00 AM

Access

SEC

LTD

USER

INST

ADV

USER

INST

ADV

USER

INST

ADV

USER

INST

ADV

Description

CURRENT TIME AND DAY SECTION K

Displays the current time and day of the week. The time and date flash if the time is not set.

CURRENT DATE SECTION K Display the current month, day, and year. Use this date

to determine daylight savings time. Note: This item is only available when Daylight Savings

Time (DST) is set to On.

CLOCK MINUTES SECTION K Set the minutes.

CLOCK HOURS SECTION K Set the hours.

SUNDAY ...

WEDNESDAY ...

SATURDAY

Default = SUNDAY

OFF, 1, 2

Default = OFF

JAN, FEB,

MAR ... DEC

Default = JAN

Continued on next page.

USER

INST

ADV

INST

ADV

USER

INST

ADV

DAY OF THE WEEK SECTION K Set the day of the week.

DAYLIGHT SAVINGS TIME SECTION K Selects whether to use Daylight Savings Time. The

time is automatically adjusted if set to Mode 1 or 2. Note: See page 32 for a description of DST Modes.

MONTH SECTION K Set the current month of the year.

Note: This item is only available when Daylight Savings Time is set to Mode 1 or 2.

Page 14

Time Menu (2 of 2)

Item Field Range

01 ... 31

(number of days is

dependent on month)

Default = 01

2000 ... 2255

Default = 2005

Access

USER

INST

ADV

USER

INST

ADV

TIME MENU

12 hr to 24 hr

Default = 12

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

Scene Menu (1 of 2)

ADV

Description

DAY OF THE MONTH

Set the day of the month. Note: This item is only available when Daylight Savings

Time is set to Mode 1 or 2.

YEAR SECTION K Set the current year.

Note: This item is only available when Daylight Savings Time is set to Mode 1 or 2.

MODE SECTION K Select whether time should be displayed using a 12

or a 24 hour clock.

SECTION K

Item Field Range

SCENE MENU

Occ

Away

PERM1

PERM Away 2

PERM UnOcc 3,

PERM 4

PERM 5

TMPY Occ 6

TMPY 7

TMPY 8

Default = Occ PERM 1

INF, 1 to 180 days

Default = INF

Schd

Wake

Occ

UnOcc

Sleep

Away

Default = SCHD

Access

USER

INST

ADV

USER

INST

ADV

INST

ADV

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

Description

SELECT SECTION N

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

schedule is selected.

AWAY HOLD SECTION O

Set the number of days for the Permanent Away 2 scene. When the scene is selected, the thermostat remains in that scene for the set number of days then reverts to the last permanent scene.

SET PERMANENT 1 SECTION N

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.

Continued on next page.

Page 15

Scene Menu (2 of 2)

Item Field Range

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

INST

ADV

INST

ADV

INST

ADV

Description

SET PERMANENT 4 SECTION N

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 N

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 N

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.

SCENE MENU

Schd

Wake

Occ

UnOcc

Sleep Away

Default = SCHD

1:00 to 10:00 hr

(½ hr intervals)

Default = 3:00

OFF. ON

Default = OFF

INST

ADV

USER

INST

ADV

INST

ADV

SET TEMPORARY 8 SECTION N

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.

TEMPORARY ZONE HOLD SECTION C

Select the number of hours the temporary hold affects this zone.

SCENE MENU

Select the Scene feature of the thermostat.

SECTION N

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

Page 16

Schedule Menu (1 of 4)

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

Item Field Range

SCHEDULE MENU

NONE, ZONE,

MST1, MST2,

MST3, MST4,

MBR1, MBR2,

MBR3, MBR4

Default = NONE

NONE, ZONE,

MST1, MST2,

MST3, MST4,

MBR1, MBR2,

MBR3, MBR4

Default = NONE

Access

USER

INST

ADV

USER

INST

ADV

Description

HEAT SCHEDULE SECTION L

If a schedule is not required, select NONE. If the schedule is only used by this thermostat, select

ZONE. If the schedule is shared with other thermostats,

select MST1 to MST4. If the schedule is set on another thermostat, select

MBR1 to MBR4. Note: MST1 to MST4 is only available if the COOL

Schedule is set to NONE, ZONE or a MBR #. This item can be viewed in the USER and INST

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

COOL SCHEDULE SECTION L If a schedule is not required, select NONE.

If the schedule is only used by this thermostat, select ZONE.

If the schedule is shared with other thermostats, select MST1 to MST4.

If the schedule is set on another thermostat, select MBR1 to MBR4.

Note: MST1 to MST4 is only available if the HEAT Schedule is set to NONE, ZONE or a MBR #.

This item can be viewed in the USER and INST access levels but can only be adjusted in the ADV access level.

24 hr, 5-2,

5-11, 7dAY

Default = 5-11

2 (Occ, UnOcc),

4 (Wake, UnOcc,

Occ, Sleep)

Default = 4

Continued on next page.

USER

INST

ADV

USER

INST

ADV

SCHEDULE TYPE SECTION L

Select the type of schedule. Note: This item is only available when the Heat or

Cool Schedule are set to ZONE or MST1 to MST4.

SCHEDULE MODE SECTION L

Select the number of events per day. Note: This item is only available when the Heat or Cool

Schedules are set to ZONE or MST1 to MST4.

Page 17

Schedule Menu (2 of 4)

Item Field Range

– –:– – to 11:50 PM

– –:– – to 23:50

Wake

UnOccupied

Occupied

Sleep

Wake

UnOccupied

Occupied

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Access

USER

INST

ADV

USER

INST

ADV

Description

ALL DAYS OF THE WEEK

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 24 hr.

MONDAY THROUGH FRIDAY

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 5-2 or 5-11.

SECTION L

Sleep

SCHEDULE MENU

Wake

UnOccupied

Occupied

Sleep

Wake

UnOccupied

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

USER

INST

ADV

USER

INST

ADV

SATURDAY AND SUNDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 5-2.

SATURDAY

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 5-11 or 7dAY.

SECTION L

Occupied

Sleep

Continued on next page.

Default = 6:00 PM

Default = 10:00 PM

Page 18

Schedule Menu (3 of 4)

Item Field Range

– –:– – to 11:50 PM

– –:– – to 23:50

Wake

UnOccupied

Occupied

Sleep

Wake

UnOccupied

Occupied

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Access

USER

INST

ADV

USER

INST

ADV

Description

SUNDAY

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 5-11 or 7dAY.

MONDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 7dAY.

SECTION L

Sleep

SCHEDULE MENU

Wake

UnOccupied

Occupied

Sleep

Wake

UnOccupied

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

Default = 6:00 PM

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM

Default = 8:00 AM

USER

INST

ADV

USER

INST

ADV

TUESDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 7dAY.

WEDNESDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 7dAY.

Occupied

Sleep

Continued on next page.

Default = 6:00 PM

Default = 10:00 PM

Page 19

Schedule Menu (4 of 4)

Item Field Range

Wake UnOccupied Occupied Sleep

SCHEDULE MENU

Wake UnOccupied

Occupied

Sleep

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM Default = 8:00 AM Default = 6:00 PM

Default = 10:00 PM

– –:– – to 11:50 PM

– –:– – to 23:50

Default = 6:00 AM Default = 8:00 AM Default = 6:00 PM

Default = 10:00 PM

Access

USER

INST

ADV

USER

INST

ADV

Description

THURSDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 7dAY.

FRIDAY SECTION L

Select the times for the scheduled events. Note: This item is only available when the Schedule

Type is set to 7dAY.

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

Monitor Menu (1 of 2)

Item Field Range

-76 to 149°F

(-60.0 to 65.0°C)

-76 to 149°F

(-60.0 to 65.0°C)

Access

LTD

USER

INST

ADV

LTD

USER

INST

ADV

The Monitor menu items record the high and low temperatures and the number of running hours of mechanical equipment.

Description

OUTDOOR HIGH

Records the highest outdoor temperature. Press Up and Down buttons to clear.

Note: This item is only available when an outdoor sensor is connected to the tN4 network.

OUTDOOR LOW SECTION A

Records the lowest outdoor temperature. Press Up and Down buttons to clear.

Note: This item is only available when an outdoor sensor is connected to the tN4 network.

SECTION A

MONITOR MENU

-22 to 266°F

(-30.0 to 130.0°C)

Continued on next page.

USER

INST

ADV

ROOM HIGH SECTION A

Records the highest room temperature. Press Up and Down buttons to clear.

Note: This item is only available when there is at least one active room sensor.

Page 20

Monitor Menu (2 of 2)

Item Field Range

-22 to 266°F

(-30.0 to 130.0°C)

50 to 120°F, OFF

(10.0 to 49.0°C, OFF)

Default = OFF

OFF, 20 to 80°F

(OFF, -6.5 to 26.5°C)

Default = OFF

0 to 9999 hr

Access

USER

INST

ADV

INST

ADV

Description

ROOM LOW SECTION A

Records the lowest room temperature. Press Up and Down buttons to clear.

Note: This item is only available when there is at least one active room sensor.

ROOM HOT SECTION A

Provides a warning message when the room temperature exceeds this setting.

Note: This item is only available when there is at least one active room sensor.

ROOM COLD SECTION A

Provides a warning message when the room temperature drops below this setting.

Note: This item is only available when there is at least one active room sensor.

HEAT 1 RUN TIME SECTION F

Records the number of hours that first stage heat runs. Press Up and Down buttons to clear.

MONITOR MENU

0 to 9999 hr

INST

ADV

INST

ADV

INST

ADV

INST

ADV

HEAT 2 RUN TIME SECTION F

Records the number of hours that second stage heat runs. Press Up and Down buttons to clear.

Note: This item is only available when the thermostat is used for two stage heating.

COOL 1 RUN TIME SECTION G

Records the number of hours that first stage cool runs. Press Up and Down buttons to clear.

Note: This item is only available when the thermostat is used for cooling.

COOL 2 RUN TIME

Records the number of hours that second stage cool runs. Press Up and Down buttons to clear.

Note: This item is only available when the thermostat is used for two stage cooling.

FAN 1 RUN TIME SECTION I

Records the number of hours that Fan 1 runs. Press Up and Down buttons to clear.

Note: This item is only available when Fan Mode is set to 1 through 5, or Fan 1 Vent is set to On.

SECTION G

0 to 9999 hr

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

INST

ADV

FAN 2 RUN TIME SECTION I

Records the number of hours that Fan 2 runs. Press Up and Down buttons to clear.

Note: This item is only available when Fan Mode is set to 3, 4, or 5, or Fan 2 Vent is set to On.

Page 21

Test Menu (1 of 1)

The Test Menu Items allow for testing of each relay on the thermostat.

Item Field Range

NONE, AUTO, MAN

Default = NONE

OFF, ON

Default = OFF

OFF, ON

Default = OFF

OFF, ON

Default = OFF

Access

ADV

Description

TEST MODE

Select either manual or automatic test sequence of the thermostat.

HEAT 1 RELAY

Manually turn on Heat 1 Relay for up to 5 minutes. Note: This item is only available when Test Mode

is manual.

HEAT 2 RELAY

Manually turn on Heat 2 Relay for up to 5 minutes. Note: This item is only available when Heat 2 Terminal

is not set to None and Test Mode is manual.

COOL 1 RELAY

Manually turn on Cool 1 Relay for up to 5 minutes. Note: This item is only available when Cool Stage is

set to 1 or 2 and Test Mode is manual.

TEST MENU

COOL 2 RELAY

OFF, ON

Default = OFF

OFF, ON

Default = OFF

OFF, ON

Default = OFF

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

ADV

Manually turn on Cool 2 Relay for up to 5 minutes. Note: This item is only available when Cool Stage is

set to 2 and Test Mode is manual.

FAN 1 RELAY

Manually turn on Fan 1 Relay for up to 5 minutes. Note: This item is only available when Fan Mode is

set to 1 through 5 or Fan 1 Vent is set to On and Test Mode is manual.

FAN 2 RELAY

Manually turn on Fan 2 Relay for up to 5 minutes. Note: This item is only available when Fan Mode is

set to 3, 4, or 5, or Fan 2 Vent is set to On and Test Mode is manual.

Page 22

Misc (Miscellaneous) Menu (1 of 2)

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

Item Field Range

MISC MENU

LTD, USER,

INST, ADV

Default = USER

°F, °C

Default = °F

ON, TMPY, OFF

Default = TMPY

-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

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 T

Select Fahrenheit or Celsius as the temperature units.

BACKLIGHT SECTION U

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

OFFSET SECTION Q

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

– – –, -bus#:01,

... bus#:24, DEF

Default = – – –

1 to 24 ADV

Continued on next page.

INST

ADV

COPY SETTINGS SECTION V

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 SECTION U Number of tN4 devices connected to this tN4 bus.

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

Page 23

Misc (Miscellaneous) Menu (2 of 2)

Item Field Range

AUTO, -bus#:01,

... bus#:24

Default = AUTO

MISC MENU

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

546, Software Version

Access

SEC

LTD

USER

INST

ADV

SEC

LTD

USER

INST

ADV

Description

ADDRESS

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.

SECTION V

Testing the Thermostat

The thermostat’s Test menu allows you to test each relay. While testing, the word “USERTEST” is displayed.

1. Set the Access Level to Advanced, See the Access

Levels section for detailed instructions.

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

• Use the Automatic test sequence to close each relay for 10 seconds.

• Use the Manual test sequence to test each relay contact for up to 5 minutes.

The automatic test sequence is as follows:

Step 1: Close H1 relay for 10 seconds. Step 2: Close H2 relay for 10 seconds. Step 3: Close C1 relay for 10 seconds. Step 4: Close C2 relay for 10 seconds. Step 5: Close F1 relay for 10 seconds. Step 6: Close F2 relay for 10 seconds.

Page 24

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 up to three separate auxiliary sensors. These sensors can either be room sensors, floor sensors, a remote sensor, an outdoor sensor, a coil sensor or a duct sensor.

Indoor Sensor 076 Outdoor Sensor 070Duct Sensor 083

Indoor Sensor 077 Slab Sensor 079

Universal Sensor 071

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

• Locate the Sensor 1, 2, and 3 settings in the Adjust menu.

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 and cooling operations. Up to three auxiliary sensor inputs can be configured for a room sensor. If additional room sensors are installed, the thermostat averages the room sensor readings and uses the average as the current room temperature.

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.

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.

Remote Sensor

A single remote sensor can be connected to the thermostat. The temperature measured by a remote sensor does not affect the heating and cooling operation and is only used for display purposes.

• Locate the Remote sensor under the Sensor 1 item 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 2 item in the Adjust menu.

Coil Sensor

A coil sensor can be connected to the thermostat. The coil sensor measures the coil return water temperature allowing the thermostat to determine the operation of the heating and / or cooling fan. A duct sensor cannot be installed when a coil sensor is used.

• Locate the Coil sensor under the Sensor 3 item in the Adjust menu.

Duct Sensor

A duct sensor can be connected to the thermostat. The duct sensor is located in the duct downstream of the heating or cooling coil. The duct sensor allows the thermostat to determine the operation of the heating or cooling fan. A duct sensor cannot be installed when a coil sensor is used.

• Locate the Duct sensor under the Sensor 3 item in the Adjust menu.

Page 25

Heat or Cool Mode of Operation Section B

You can operate the thermostat in heating or cooling modes by manually setting the Mode item to Heat or Cool. The Mode item is found in the Adjust menu. You can also set

and cooling. When Mode is set to Off, the thermostat does not operate except to provide freeze protection.

• Locate the Mode item in the Adjust menu.

the Mode item to Automatic changeover between heating

Mode of Operation

Adjusting the Room Set Temperature (No Schedule) Section C1

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

Wait 10

Press Up or Down

Button to adjust the

heating temperature.

Press Up or Down

Button to adjust the

cooling temperature.

seconds

Adjusting the Room Set Temperature (Schedule) Section C2

When using a schedule, the heating and cooling temperature for each schedule event can be permanently changed from the Adjust menu. There will be one “Set Heat” and one “Set Cool” 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 and Set Cool Occ settings are available.

Current schedule

status indicates a

schedule is in use

Press Up or Down

Button to adjust

the heating “Wake”

temperature.

Press Up or Down

Button to adjust the

heating “UnOcc”

temperature

Page 26

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.

By default, the temporary change lasts for 3 hours. This duration can be changed by going to the “Temporary Zone Hold” item in the Scene menu.

The temporary change can be cancelled before it expires by pressing the Up and Down buttons at the same time.

Wait 10

seconds

Cycles Per Hour Section D

You can set the number cycles per hour (CPH) for both the heating and cooling operations. 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.

Cooling CPH:

The default setting for cooling cycles per hour is automatic.

• To manually set the cycles per hour, go to the Adjust menu and select Cool CPH.

Fan CPH:

• The fan cycles per hour is tied to the cooling cycles

per hour. When cooling is not used, the fan then uses 1 CPH.

Page 27

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)

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.

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.

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.

Furnace (FURN)

When you are operating a furnace, or similar equipment, and require the fan to operate with the heat relay contact, set the terminal unit to furnace.

Page 28

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

Reset Water Temperature

85%

On Time

90%

On Time

One-Stage PWM Heating

Set Heat

Warmer

Heat

Cycle Length

Two Stage Heating

The temperature in a two stage zone is controlled by varying the on time of the Heat 1 and Heat 2 relays during a cycle. Under light loads, the Heat 1 relay is cycled on and off. As the load increases, the Heat 1 relay on time is increased until it reaches the maximum of the cycle length or, if a floor sensor is used, the slab temperature reaches the floor maximum setting. The Heat 2 relay is then cycled and its on time is increased as the load increases.

When the heating load decreases, the on time of the Heat 2 relay is reduced until the Heat 2 relay is turned off completely. The thermostat then reduces the on time of the Heat 1 relay.

Note: When using a floor sensor, the Heat 2 relay may be on while the Heat 1 relay is off if the floor temperature has reached the floor maximum setting.

One Stage Heating

Room Sensor Only

When operating with only an room sensor, the on time for the Heat 1 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 1 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 1 relay to satisfy the floor sensor and an on time to satisfy the room sensor. The Heat 1 relay operates for the longer of these two on times.

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 1 relay. In this situation, underheating can occur.

Two-Stage PWM Heating

Set Heat

Warmer

Heat 2 Heat 1

Cycle Length

Room Sensor Only

When operating with only an air sensor, the on times for the Heat 1 and Heat 2 relays are calculated to satisfy the requirements of the room sensor.

Floor Sensor Only

When operating with only a floor sensor, the on times for the Heat 1 and Heat 2 relays are calculated to satisfy the requirements of the floor sensor. The thermostat operates to maintain the floor at the minimum floor temperature setting.

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

Page 29

Room and Floor Sensor

When operating with both room and floor sensors, the thermostat calculates an on time for the Heat 1 relay to satisfy the floor sensor’s requirements and on times for the Heat 1 and Heat 2 relays to satisfy the room sensor’s requirements. The thermostat operates the Heat 1 relay for the longer of these two on times.

While the minimum floor temperature is satisfied, the on times of the Heat 1 and Heat 2 relays are calculated to satisfy the room temperature requirements.

During heavy loads, the maximum floor temperature setting limits the on time of the Heat 1 relay. In this situation, the Heat 2 relay may be on while the Heat 1 relay is off.

Note: During light heating loads, overheating can occur due to the minimum floor temperature requirements.

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 1 relay is on, set the H1 Pump setting in the Adjust menu to On.

• If the tN4 bus’s system pump must turn on when the Heat 2 relay is on, set the H2 Pump setting in the Adjust menu to On.

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

Operated by Zone Manager

Second Stage Heat Source

The tN4 System Control needs to know whether second stage heating operates a non-hydronic heating system, a boiler water temperature zone, or a mixed water temperature zone.

• If using non-hydronic, set to None.

• If using boiler temperature water, set to Boil.

• If using a mix water temperature, enter the correct Mix

bus number.

Boiler Water Temperature Bus

Mix Water Temperature Bus

2nd

Stage

1st

Stage

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 30

Cooling Operation Section G

The thermostat has two cooling contacts, Cool 1 and Cool 2. For one stage cooling systems, use the Cool 1 contact to

operate the cooling equipment. For two stage cooling systems, use the Cool 1 contact to

operate the first stage of cooling and the Cool 2 contact to operate the second stage of cooling.

• Locate the COOL STG setting in the Adjust menu to set the number of cooling stages.

One Stage Cooling

During each cooling cycle, the thermostat calculates a required on time for the Cool 1 relay to satisfy the cooling requirements of the zone.

• If more cooling is required, the on time is increased.

• If less cooling is required, the on time is decreased.

One-Stage PWM Cooling

Set Cool

Warmer

Cool

Cycle Length

Two Stage Cooling

During each cooling cycle, the thermostat calculates a required on time for the Cool 1 and the Cool 2 relays.

• If more cooling is required, the on time of Cool 1 is increased. If Cool 1 is operating continuously, the on time for Cool 2 is increased to satisfy the load.

• If less cooling is required, the on time of Cool 2 is decreased. If Cool 2 is off, the on time of Cool 1 is decreased to satisfy the load.

Two-Stage PWM Cooling

Set Cool

Warmer

Cool 2 Cool 1

Cycle Length

Heating / Cooling Interlock and Priority

To prevent frequent changes between heating and cooling, use the Heating / Cooling Interlock setting. When the Mode is set to Automatic, the thermostat waits for the interlock time before switch over occurs.

• Locate the Interlock item in the Adjust menu You can manually set whether heating or cooling has

priority.

• Locate the Priority item in the Adjust menu. If set to heating, all zones in the cooling group must be

satisfied for heating before the interlock time allows the thermostat to automatically switch over to cooling. If any heating is required, cooling is terminated and heating resumes.

If set to cooling, the operation is reversed.

Cool Groups Section H

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 view the average temperature, go the View menu and select Cool Average.

This is only available on the cool group master. In a cool group, one thermostat is assigned as the cool

group master. The cool group master operates the cooling 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.

• 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.

Cool Group 1 Cool Group 2

MasterMaster MemberMemberMember

tN4

Page 31

Fan Operation Section I

The thermostat has two fan contacts, Fan 1 and Fan 2. These support a wide range of fan applications. Set the

See the Fan Mode table for details.

• Locate the Fan Mode item in the Adjust menu.

Fan Mode to determine when the fan relays activate.

Fan Mode

There are six modes of operation that determine the operation of the Fan 1 and Fan 2 contacts.

Fan Mode

None Does not operate Dedicated Ventilation Dedicated Ventilation only 1 Cool 1 and 2 Dedicated Ventilation Fan 1 runs for Cool 1 and 2. 2 Heat and Cool 1 and 2 Dedicated Ventilation Fan 1 runs for Heat, Cool 1 and 2. 3 Heat Cool 1 and 2 Fan 1 runs at low speed for Heat. Fan 2 runs on

4 Cool 1 Cool 2

5 Heat and Cool 1 Cool 2

Dedicated Ventilation

A dedicated ventilation system has a fan dedicated for ventilation only. This is also common when using Heat Recovery Ventilation (HRV) or Energy Recovery Ventilation (ERV). Use the Fan 2 contact to operate dedicated ventilation fans.

Fan Mode None, 1 or 2 must be selected when using dedicated ventilation.

• Locate the Fan Mode item in the Adjust menu and set to None, 1 or 2.

• Locate the F2 Vent item in the Adjust menu and set to On.

• Locate the Fan item in the Adjust menu for each event (Wake, Unoccupied, Occupied, Sleep) and set the fan operating percentage.

Fan Mode = None Sensor 3 = Duct F2 Vent = On

In some ducting configurations, the dedicated ventilation fan requires the main heating / cooling system fan to operate at the same time. The dedicated ventilation fan is operated by the Fan 2 contact and the heating / cooling fan is operated by the Fan 1 contact.

• To have the Fan 1 contact operate with the Fan 2 contact, go to the Adjust menu and set the F1 Vent item to On.

Fan Mode = 1 or 2 F2 Vent = On F1 Vent = On

Fan 1 Contact operates together with…

Duct

Sensor

Fan 2

Cool

Heat

Off

1 2

Fan 1

Fan 2 Contact operates together with…

Ventilation Pre-vent

When the building is Unoccupied or in a Sleep period, ventilation may be reduced or set to Off. As a result, stale air may build up in the building. When transitioning to a Wake or Occupied period, the dedicated ventilation may be run continuously for a period of time to introduce fresh air into the building.

• Locate the Ventilation Pre-vent item in the Adjust menu.

Intermittent Fan

The intermittent fan operation ensures the Fan 1 contact operates for a minimum percentage of each cycle. This allows the fan to circulate air throughout the building. The fan operates based upon the Fan Mode selected. If the heating or cooling systems are shut off and the fan has not yet met the minimum percentage on time, the fan continues to run.

Intermittent Fan and Dedicated Ventilation cannot be used at the same time.

• Locate the Fan item in the Adjust menu for each event (Wake, Unoccupied, Occupied, Sleep) and set the minimum fan operating percentage.

Two Speed Fan

For a two-speed fan, Fan 1 operates the low speed while Fan 2 operates the high speed as defined in Fan Modes 3, 4, or 5.

Fan Operation During Heating

HRV

The Fan 1 contact operates during first and / or second stage heating when both of the following settings are made.

• Fan Mode must be set to either 2, 3 or 5.

and

• H1 and / or H2 terminal unit must be set to either Coil or Furnace.

Description

high speed for Cool 1 and 2. Fan 1 runs at low speed for Cool 1. Fan 2 used

for high speed for Cool 2. Fan 1 runs for Heat and Cool 1 at low speed. Fan

2 used for high speed for Cool 2.

Page 32

Fan Pre and Post Purge

To prevent the fan from operating before the coil reaches the proper temperature, the operation of the fan can be delayed. Likewise the operation of the fan may continue after the heating or cooling has been completed.

• All fan settings are found in the Adjust menu. Coil or Duct Sensor Not Installed Operation

• During a call for heating, the fan turns on after the Fan

Delay time expires.

• After heating or cooling, the fan turns off after the Fan Purge time expires.

• After Cooling, the fan immediately turns off.

Coil Sensor Installed Operation

• During a call for heating, the fan turns on after the coil

temperature exceeds the Heat Coil Minimum temperature setting.

• During a call for cooling, the fan turns on after the coil temperature falls below the Cool Coil Maximum temperature setting.

• After Heating, the fan turns off after the Fan Purge time setting expires.

• After Cooling, the fan immediately turns off.

Duct Sensor Installed Operation

• During a call for heating or cooling, the fan turns on after

Fan Delay time expires.

• After Heating the fan remains on until the duct temperature falls below the Heatpurge Fan setting.

• After Cooling, the fan remains on until the temperature rises above the Coolpurge Fan setting.

Freeze Protection

The thermostat provides freeze protection to the heating or cooling coil when a duct or coil sensor is present. During cooling, if the temperature falls below 37°F (3°C), the compressor shuts off while the fan continues to operate. During ventilation, if the coil or duct sensor temperature falls below 37°F (3°C), the fan shuts off.

Cool

Freeze Protection

On On

3°C

37°F

Cooling

Freeze Protection

3°C

37°F

Cooling

Cool

Off

Filter Change Section J

The thermostat records the number of hours that the Fan 1 contact runs. When Fan 1 run time exceeds the Filter time, then a Filter symbol displays. Once you replace the filter, the Filter timer can be reset using the Clear Filter item.

• To reset the Filter item, go to the Adjust menu and select the Clear Filter item.

Filter Symbol

To Clear the filter timer

Time Clock Section K

The thermostat has a built-in time clock to allow the thermostat to operate on a schedule. A battery-less backup allows the thermostat to keep time for up to 4 hours without power. The time clock supports automatic adjustment for

Daylight Saving Time (DST) once the day, month, and year are entered. Use the Time menu to set the correct time, day, month, and year.

Daylight Savings Time Modes

Mode DST Start DST End

1 1st Sunday in April Last Sunday in October 2 2nd Sunday in March 1st Sunday in November

Page 33

Setting the Schedule Section L

•

• •

•

To provide greater energy savings, you can operate the thermostat on a programmable schedule. The schedule is stored in memory and is not affected by loss of power to the thermostat. A single thermostat zone or multiple devices on the network can be assigned to follow the schedule of one thermostat. On the 546, separate schedules can be followed for heating and for cooling.

Zone Schedule

A zone schedule only applies to the thermostat on which the schedule is programmed. The thermostat follows the zone schedule and the events are not communicated to other thermostats.

Master Schedule

If the thermostat is connected to other thermostats, then the thermostat can operate on 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 create a master schedule:

1. Assign a thermostat as a schedule master by setting the

Heat Schedule or Cool Schedule item in the Schedule menu to Master (MST) 1 to 4.

Members of

Schedule 1

Master

Schedule 1

None

Zone

Schedule

Master

Schedule 2

Members of

Schedule 2

Once a thermostat is the master schedule, a clock symbol and number appear on the display in the View menu. The number identifies the master schedule number. This helps you locate the master schedule if you need to change the schedule.

You cannot have both the heating and cooling schedules serve as the schedule master at the same time. Choose one of the two to be the schedule master. The other schedule can be a member of any master schedule.

Schedule Types

The schedule type determines when the schedule repeats itself. This thermostat includes four schedule types:

• 24 Hour: Repeats every 24 hours.

• 5-2: Repeats on a weekly basis. However, it breaks the

week into the weekend and weekdays. This reduces the amount of schedule event settings.

• 5-11: Repeats on a weekly basis. However, it breaks the week into Saturday and Sunday followed by the weekdays. This reduces the amount of schedule event settings.

• 7 Day: Repeats on a weekly basis and allows for separate event times for each day.

Schedule Type

Day 24 Hour 5-2 5-11 7 day Sa Su Mo Tu We Th Fr

Zone 1 2 3 4 5 6 7 8

Schedule Mode

The schedule mode can have either 4 or 2 events per day.

To follow a master schedule

1. Assign a thermostat to follow a master schedule, by

setting the Heat Schedule or Cool Schedule menu item in the Schedule menu to Member (MBR) 1 to 4.

An event is a time at which the thermostat changes the set temperature. The event time can be set to the nearest 10 minutes. If you wish to have the thermostat skip the event, enter “--:--“ as the time. The “--:--“ time is found between 11:50 PM and 12:00 AM. See the table, Schedule Mode, for more details regarding types of events.

Schedule Mode Event 24Hr Sat Sun Mon Tue We Thu Fri

Wake Unoccupied

6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM

8:00 AM 8:00 AM 8:00 AM 8:00 AM 8:00 AM 8:00 AM 8:00 AM 8:00 AM

4 events per day

Occupied Sleep

6:00 PM 6:00 PM 6:00 PM 6:00 PM 6:00 PM 6:00 PM 6:00 PM 6:00 PM

10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM

Occupied

6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM 6:00 AM

2 events per day

Unoccupied

10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM 10:00 PM

Page 34

Optimum Start / Stop Section M

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. When cooling, the cooling system is allowed to turn on 30 minutes prior to the beginning of a period that requires cooling.

• 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

Recovery Period

Optimum Start/Stop

Setback

Period

Optimum Start

Recovery Period

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Scenes Section N

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 Scenes. There are a total of eight Scenes available.

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

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

• Customizable 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

Page 35

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

Scene 4

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

Scene 7

70°F

Master Bedroom Scheduled Event

62°F

Guest Bedroom

UnOccupied

Master Bedroom

Scheduled Event

Guest Bedroom

Scheduled Event

70°F

Upstairs

Scheduled Event

70°F

Downstairs

Scheduled Event

62°F

for

Upstairs

UnOccupied

Downstairs

Scheduled Event

4hr

70°F

Away Hold Section O

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.

• To set the number of days away, go to the Scene menu and select Away Hold.

When set to Infinite, the Permanent Away 2 scene remains until a new scene is selected. If you know in advance how long the building occupant will be away, you can adjust Away Hold to the number of days. Once the number of days have elapsed, the thermostat automatically changes from the Permanent Away 2 scene to previous permanent scene.

Example: The home occupants are traveling for 14 days. They want the home to be at the Away temperatures for 14 days and then automatically return to the normal schedule.

• Away Hold is set to 14 days.

• Scene is changed to Permanent Away 2.

Away Temperatures

An Away temperature setting exists for both heating and cooling. By default, the Set Heat Away temperature is set to 62°F (16.5°C) and the Set Cool Away temperature is set to 85°F (29.5°C).

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

Length of Time Away

The Away Hold feature allows you to set the number of days the Away temperature applies.

62°F

Away Away

62°F

Away Away

62°F

Page 36

Radiant Base Load Section P

Use the Radiant Base Load feature when operating radiant floor heating in conjunction with a fast acting secondary heat source. The Radiant base Load feature is only available when a floor sensor is not installed. A time lag occurs with radiant floor heating due to the large thermal mass of concrete floors. This effect is evident when the thermostat temperature setting is increased and the radiant floor takes a while to reach the specified temperature.

Likewise, when the room air temperature setting is decreased the floor temperature slowly decreases. This can be described as a “flywheel” effect.

This flywheel effect is particularly noticeable when there is a large amount of solar gain in the building. The building temperature overshoots the desired temperature while the sun rises and the temperature undershoots when the sun sets.

The total heating load can be broken down into two portions. One portion is a heat load that remains constant for long periods of time. This is defined as the base load. The other portion of the heat load is consistently changing over a period of time due to occupant comfort, cycling of heating equipment, temperature settings in the setback schedule

Occupied

Unoccupied

Base Load

Time

and solar gain effects throughout a day. This portion of the heating load is defined as the dynamic heating load.

The Radiant Base Load feature counteracts the flywheel effect by using the radiant floor to only heat the base load. The secondary heating system makes up the difference between the base load and the dynamic load. Therefore, the amount of radiant floor heating compared to the total heating load is less than 100%.

• To adjust Radiant Base Load, go to the Adjust menu and set the H1 Load item.

In the Hi setting, the radiant floor heating tries to fully heat the entire heating load. In the Lo setting, the radiant floor heating only makes up a small portion of the overall heating load. The thermostat also includes a 2 and a 3 setting that provides intermediate steps between the Lo and Hi settings.

Offset Section Q

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.

Warm Weather Shut Down Section R

The Warm Weather Shut Down (WWSD) feature prevents the heating system (including floor minimum temperatures) from operating after the outdoor temperature exceeds the WWSD temperature setting. You can follow the tN4 System

Control’s WWSD or you can set WWSD temperatures for the Wake and Occupied events, and for the Unoccupied and Sleep events.

• Locate the WWSD setting in the Adjust menu.

Cold Weather Shut Down Section S

The Cold Weather Shut Down (CWSD) feature prevents the cooling system from operating after the outdoor temperature falls below the CWSD temperature setting. You can set

CWSD temperatures for the Wake and Occupied events, and for the Unoccupied and Sleep events.

• Locate the CWSD setting in the Adjust menu.

Units of Temperature Section T

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

• Locate the units setting in the Misc menu.

Page 37

Backlight Section U

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 V

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 W

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 38

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 37 and 38 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 39

Error Messages (1 of 4)

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.

MONITOR ERROR

The thermostat failed to read the Monitor 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 Monitor menu.

TIME ERROR

The thermostat failed to read the Time 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 Time 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, the error message automatically clears.

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.

Page 40

Error Messages (2 of 4)

Error Message Description

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.

ROOM SENSOR SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read the built-in sensor. If either Sensor 1, 2, or 3 are 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 either Sensor 1, 2, or 3 are 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.

SENSOR 1 SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read Sensor 1. 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, the error message automatically clears.

SENSOR 1 OPEN CIRCUIT

Due to an open circuit, the thermostat failed to read Sensor 1. 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, the error message automatically clears.

SENSOR 2 SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read Sensor 2. 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, the error message automatically clears.

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Error Messages (3 of 4)

Error Message Description

SENSOR 2 OPEN CIRCUIT

Due to an open circuit, the thermostat failed to read Sensor 2. 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, the error message automatically clears.

SENSOR 3 SHORT CIRCUIT

Due to a short circuit, the thermostat failed to read Sensor 3. 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.

Sensor 3 is set to Duct. Then the ventilation feature is disabled. Locate and repair the problem as described in the Data Brochure D 070. Once the error is

corrected, the error message automatically clears.

SENSOR 3 OPEN CIRCUIT

Due to an open circuit, the thermostat failed to read Sensor 3. 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.

Sensor 3 is set to Duct. Then the ventilation feature is disabled. Locate and repair the problem as described in the Data Brochure D 070. Once the error is

corrected, the error message automatically clears.

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 MASTER ERROR

Two thermostats have been set to the same COOL MST setting. Select a different COOL MST setting for the thermostat. The cooling system will not operate while this error message is present. The error message clears automatically once the error is corrected.

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 MASTER ERROR

Two thermostats have been set to the same SCH MSTR setting. Select a different SCH MSTR setting for the thermostat. The thermostat operates in the Occupied mode while this error message is present. The error message clears automatically once the error is corrected.

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Error Messages (4 of 4)

Error Message Description

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.

ROOM HOT WARNING

The room temperature has exceeded the Room Hot setting in the Monitor menu.

ROOM COLD WARNING

The room temperature has fallen below the Room Cold setting in the Monitor menu.

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)

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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.

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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

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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 546 - 07/08.