Tekmar 541 User manual

1 of 24 © 2007 D541 - 08/07
D541
08/07
tekmarNet®4 Thermostat 541
- Data Brochure
Information
Brochure
Choose controls
to match
application
1Application
Brochure
Design your
mechanical
applications
2Rough In
Wiring
Rough-in
wiring
instructions
3Wiring
Brochure
Wiring and
installation of
specific control
4Job
Record
Record settings &
wiring details for
future reference
6
Data
Brochure
Control settings
and sequence of
operation
5
•
• tN4 Compatible
•
• 1 Auxiliary Temperature Sensor Input
•
• Pulse Width Modulation
•
• Scenes
The tekmarNet®4 thermostat 541 operates one stage of heating equipment. The 541 can operate as a stand alone device,
or communicate with a group of tekmarNet®4 thermostats.
Introduction
Features

© 2007 D541 - 08/07 2 of 24
Table of Contents
Table of Contents............................................................2
Display and DIP Switches ..............................................2
Dip Switches ...........................................................2
Access Levels .........................................................3
Display and Symbols Description............................3
User Interface .........................................................4
Setup ..............................................................................5
View Menu .............................................................5
Adjust Menu............................................................6
Scene Menu............................................................8
Schedule Menu.......................................................9
Miscellaneous Menu ..............................................9
Thermostat Operation .................................................. 11
Auxiliary Sensors ................................................. 11
Mode of Operation ............................................... 11
Adjusting the Temperature ...................................12
Cycles Per Hour ................................................... 13
Heating Terminal Units .........................................13
Heating Operation ................................................ 14
Cool Groups .........................................................15
Setting the Schedule.............................................15
Optimum Start / Stop ...........................................15
Scenes .................................................................16
Away Hold ............................................................ 17
Offset ................................................................... 17
Units of Temperature ............................................ 17
Backlight .............................................................. 17
tN4 Address ......................................................... 17
Pump Exercising ................................................... 17
Error Messages ............................................................18
Cleaning the Thermostat .............................................24
Warranty.......................................................................24
Display and DIP Switches
Dip Switches
tN4 System Control (DIP Switch #2)
A tN4 System Control is a control, not a thermostat, that
the 541 thermostat connects to through the tN4 bus. All
tN4 compatible Outdoor Reset Modules are tN4 System
Controls.
•
• If the thermostat is connected to a tN4 System Control,
set the tN4 System Control DIP switch to tN4 System
Control (down position).
•
• If the thermostat is not connected to a tN4 System
Control, set the tN4 System Control DIP switch to None
(up position).
Lock/Unlock (DIP Switch #1)
Use the Lock/Unlock DIP switch to lock or unlock the
Access Level of the 541.
•
• To unlock the Access Level, set the DIP switch to the
unlocked (down) position.
•
• To lock the Access Level, set the DIP switch to the locked
(up) position. Once locked, a padlock is displayed in the
lower right corner of the display and the Access Level
cannot be changed.
Note: The tN4 System Control’s Lock/Unlock DIP switch
overrides the Lock/Unlock DIP switch on the 541. Set
the tN4 System Control’s Lock/Unlock DIP switch to the
Unlock position before Access Levels can be changed on
the thermostat.

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Access Levels
The Access Level restricts the number of Menus, Items
and Adjustments that can be accessed by the user. The
Access Level setting is found in the Miscellaneous (MISC)
menu. Select the appropriate access level for the people
who work with the thermostat on a regular basis.
The 541 has five Access Levels:
•
• Advanced (ADV): access to all settings
•
• Installer (INST): settings required for installation
•
• User (USER): for property owners
•
• Limited (LTD): limited temperature adjustment
•
• Secure (SEC): for commercial and public installations
For more information, see the Misc (Miscellaneous) Menu
section.
In the following menu tables, the access level the item is
visible in is shown in the access column.
To adjust the Access Level:
1. Set the Unlock/Lock DIP switch to the unlock position.
If a tN4 System Control is connected to the 541, the
Unlock/Lock DIP switch on the tN4 System Control
must be set to the unlock position.
2. Use the Menu button to select the Misc menu.
3. Use the Item button to select the Access menu item.
4. Use the Up and Down button to select the required
Access Level.
Display
Item Field
Displays an abbreviated
name of the selected item
Number Field
Displays the current value
of the selected item
Status Field
Displays the current status
of the control’s inputs,
outputs and operation
Menu Field
Displays the
current menu
Symbols Description
MODE OF OPERATION
Displays whether the device is in heating
mode.
FIRST STAGE HEAT
First stage heating is operating.
tN4 COMMUNICATION
A tN4 network is detected.
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.
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 J541.
Menu
The menus display in the Menu Field at the left of the
LCD.
Five menus are available:
Adjusting a Setting
To adjust a setting:
1. Use the Menu button to select the appropriate menu.
2. Use the Item button to select a menu item.
3. Use the Up or Down button to adjust the setting.
Default Item
•
• To set the default item in the View Menu, display the
item for more than five seconds.
After navigating menus, the display reverts back to the
default item after 60 seconds of button inactivity.
Copy Settings
To save time in setting thermostats, you can copy the settings
from one tN4 thermostat to a second tN4 thermostat.
Refer to the COPY item in the Misc menu on page 10.
•
• View
•
• Adjust
•
• Scene
•
• Schedule
•
• Miscellaneous
To select a menu, press and release the Menu button.
Item
In each menu, a group of items can be selected. The
abbreviated name of the selected item displays in the Item
field of the LCD display.
•
• To view the next available item, press and release the
Item button.
•
• To view the previous item, hold down the Item button
and press and release the Up button.
Continue
to next Item
Continue to next Menu
Continue
to next Item

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Display Menus
View Menu (1 of 1)
Item Field Range Access Description
-58 to 212°F
(-50.0 to 100.0°C)
SEC
LTD
USER
INST
ADV
ROOM SECTION A
Current air temperature in the room.
Note: This item is only available when the Room
Sensor is set to On or the Auxiliary Sensor is set to
Room.
– – –, 40 to 95°F
(– – –, 4.5 to 35.0°C)
USER
INST
ADV
ROOM SET SECTION A
Selected room temperature.
Note: This item is only available when the Room
Sensor is set to On or the Auxiliary Sensor is set to
Room.
– – – (if no recent
message),
-58 to 212°F
(-50.0 to 100.0°C)
SEC
LTD
USER
INST
ADV
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.
-58 to 212°F
(-50.0 to 100.0°C)
SEC
LTD
USER
INST
ADV
FLOOR SECTION A
Current floor temperature.
Note: This item is only available when the Auxiliary
Sensor is set to Floor.
-22 to 266°F
(-30.0 to 130.0°C)
INST
ADV
SUPPLY TEMPERATURE OF TN4 BUS SECTION F
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 View menu items display the current operating
temperatures and status information of the system.
VIEW MENU
After the last item, the control returns to the first item in the menu.

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Item Field Range Access Description
OFF, HEAT,
Default = HEAT
USER
INST
ADV
MODE OF OPERATION SECTION B
Mode of operation of the thermostat.
40 to 95°F
(4.5 to 35.0°C)
LTD
USER
INST
ADV
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.
Wake
Default = 70°F (21.0°C)
UnOccupied
Default = 62°F (16.5°C)
Occupied
Default = 70°F (21.0°C)
Sleep
Default = 62°F (16.5°C)
Away
Default = 62°F (16.5°C)
OFF, 40 to 122°F
(OFF, 4.5 to 50.0°C)
LTD
USER
INST
ADV
FLOOR MINIMUM SECTION A
Select the minimum floor temperature for each
event.
Note: This item is only available when the Auxiliary
Sensor is set to Floor. At the Limited Access Level,
you can only adjust the temperature +/-3°F (1.5°C)
from the last setting.
Wake
Default = 70°F (21.0°C)
UnOccupied
Default = OFF
Occupied
Default = 70°F (21.0°C)
Sleep
Default = OFF
40 to 122°F
(4.5 to 50.0°C)
Default = 85°F
(29.5°C)
ADV
FLOOR MAXIMUM SECTION A
Maximum floor temperature.
Note: This item is only available when Sensor 1 is
set to Floor.
OFF, ROOM,
FLOR (Floor),
OUT (Outdoor)
Default = OFF
INST
ADV
SENSOR SECTION A
Select the type of sensor connected to the auxiliary
sensor input.
Adjust Menu (1 of 2)
The Adjust Menu items are the programmable settings
used to operate the mechanical equipment.
Continued on next page.
ADJUST MENU

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Item Field Range Access Description
OFF, ON
Default = ON
INST
ADV
ROOM SENSOR SECTION A
Selects whether the built-in room sensor is functional.
SYNC, AUTO
2 to 12
Default = AUTO
ADV
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.
CTRL, HRF1, HRF2,
COIL, CONV, RAD,
BASE, OTHR
Default =CTRL
INST
ADV
HEAT 1 TERMINAL SECTION E
Select the type of heating terminal.
Note: If CTRL is selected, the terminal unit selected
on the tN4 System Control is used.
OFF, ON
Default = ON
INST
ADV
HEAT 1 PUMP SECTION F
Select whether the system, primary, or mixing pump
on a tN4 System Control must operate while the heat
is operating.
Note: This item is only available when the H1 Terminal
item is set to CTRL, HRF1, HRF2, Fan Coil, Convector,
Radiator, or Baseboard.
OFF, ON
Default = OFF
INST
ADV
HEAT 1 DELAY SECTION F
Select whether the system, primary, or mixing pump
on a tN4 System Control is delayed to allow a thermal
motor zone valve to open. Select On for thermal motor,
select Off for zone pump or motorized zone valve.
Note: This item is only available when the H1 Terminal
item is set to CTRL, HRF1, HRF2, Fan Coil, Convector,
Radiator, or Baseboard.
NONE, 1 to 16
Default = NONE ADV
COOL MEMBER SECTION G
Select the cool group of which this thermostat is a
member. Select None if this thermostat is not a cool
group member.
Note: This item is only available when the thermostat
is connected to a tN4 network.
ON, OFF
Default = ON
INST
ADV
OPTIMUM START / STOP SECTION I
Select whether to use Optimum Start/Stop for
heating.
Note: This item is only available when a heating
schedule is selected.
Adjust Menu (2 of 2)
ADJUST MENU
After the last item, the control returns to the first item in the menu.

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Item Field Range Access Description
Occ, Away,
PERM1, Away 2
PERM UnOcc 3,
PERM 4, PERM5
TMPY Occ 6
TMPY7, TMPY 8
Default = PERM 1
USER
INST
ADV
SELECT SECTION J
Select the scene for the building.
Note: Only Occ and AWAY are available when no
schedule is selected.
Schd
Wake
Occ
UnOcc
Sleep
Away
Default = SCHD
INST
ADV
SET PERMANENT 1 SECTION J
Select an action for the Permanent 1 scene.
Note: This item is only available when SCENE menu
is set to ON and a schedule has been selected.
Schd
Wake
Occ
UnOcc
Sleep
Away
Default = SCHD
INST
ADV
SET PERMANENT 4 SECTION J
Select an action for the Permanent 4 scene.
Note: This item is only available when SCENE menu
is set to ON and a schedule has been selected.
Schd
Wake
Occ
UnOcc
Sleep
Away
Default = SCHD
INST
ADV
SET PERMANENT 5 SECTION J
Select an action for the Permanent 5 scene.
Note: This item is only available when SCENE menu
is set to ON and a schedule has been selected.
Schd
Wake
Occ
UnOcc
Sleep
Away
Default = SCHD
INST
ADV
SET TEMPORARY 7 SECTION J
Select an action for the Temporary 7 scene. The
scene lasts for 4 hours before reverting to the previous
permanent scene.
Note: This item is only available when SCENE menu
is set to ON and a schedule has been selected.
Schd
Wake
Occ
UnOcc
Sleep
Away
Default = SCHD
INST
ADV
SET TEMPORARY 8 SECTION J
Select an action for the Temporary 8 scene. The
scene lasts for 8 hours before reverting to the previous
permanent scene.
Note: This item is only available when SCENE menu
is set to ON and a schedule has been selected.
OFF, ON
Default = OFF
INST
ADV
SCENE MENU SECTION J
Select the Scene feature of the thermostat.
Scene Menu (1 of 1)
The Scene Menu items set the current scene as
well as the scene settings.
SCENE MENU
After the last item, the control returns to the first item in the menu.

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Item Field Range Access Description
NONE,
MBR1, MBR2,
MBR3, MBR4
Default = NONE
USER
INST
ADV
HEAT SCHEDULE SECTION H
If a schedule is not required, select NONE.
If the schedule is set on another thermostat, select
MBR1 to MBR4.
Note: This item can be viewed in the USER and
INST access levels but can only be adjusted in the
ADV access level.
Schedule Menu (1 of 1)
The Schedule menu items set the schedule type, the
number of events per day, and the event times.
SCHEDULE MENU
Item Field Range Access Description
SEC, LTD, USER,
INST, ADV
Default = USER
SEC
LTD
USER
INST
ADV
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.
°F, °C
Default = °F
USER
INST
ADV
UNITS SECTION M
Select Fahrenheit or Celsius as the temperature
units.
ON, TMPY, OFF
Default = TMPY
USER
INST
ADV
BACKLIGHT SECTION N
Select whether the backlight displays permanently,
temporarily, or is off. The temporary backlight lasts
for 30 seconds.
Misc (Miscellaneous) Menu (1 of 2)
The Miscellaneous menu items set display and control
options such as access level and temperature units.
Continued on next page.
MISC MENU
After the last item, the control returns to the first item in the menu.

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Item Field Range Access Description
-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
ADV OFFSET SECTION L
Fine tune the current room temperature. Adjustments
are in tenths of a degree.
– – –, -bus#:01,
... bus#:24, DEF
Default = – – –
INST
ADV
COPY SETTINGS
Copy settings from another thermostat to this
thermostat.
1. Select the address of the thermostat to copy from.
Select DEF to load the factory default settings.
2.Wait for 3 seconds and then press the Up and Down
buttons for 1 second.
3. The thermostat will show the percentage of progress.
4. Displays DONE if successful or WARN if only part
of the settings were copied.
1 to 24 ADV
NUMBER OF DEVICES
Number of tN4 devices connected to this tN4 bus.
Note: This item is only available when the thermostat
is connected to a tN4 bus.
AUTO, -bus#:01,
... bus#:24
Default = AUTO
SEC
LTD
USER
INST
ADV
ADDRESS SECTION O
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.
541, Software Version
SEC
LTD
USER
INST
ADV
TYPE
Product number of this thermostat. Hold the Up button
to view the software version.
Misc (Miscellaneous) Menu (2 of 2)
After the last item, the control returns to the first item in the menu.
MISC MENU