Tekmar tekmarNet 557 User manual

tekmarNet®Thermostat 557
Installation & Operation Manual
557
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D
08/12
Zoning Replaces: New
© 2012 557_D - 08/12
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A Watts Water Technologies Company
The tekmarNet®Thermostat 557
provides operation for:
One Stage Radiant Floor Heat,
Two Stage Heat Pump for Heat &
Cool, One Stage Backup Heat
Or
Two Stage Heat, Two Stage Cool
And includes
One Stage Fan Control
Humidity Control
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Introduction Energy Saving Features
Programmable Schedule
Zone Synchronization
Zone Post Purge
Warm Weather Shut Down
Cooling Interlock
Auto Heating Cycle
Temporary Hold
Away Scene Key
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Additional Features
3 Auxiliary Sensor Inputs
tekmarNet®Communication
Compatible
Touchscreen Technology
Outdoor & Floor Temperature
Display
Backlight
Radiant Floor Heating & Cooling
Freeze Protection
Exercising
Heat / Cool Priority
Air Group Master
Network Schedule Master or
Member
Optimum Start
Scenes
Daylight Savings Time
Room Temperature Limiting
Relative Humidity Control
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© 2012 557_D - 08/12
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A Watts Water Technologies Company
Congratulations on the purchase of your new tekmar®thermostat.
This manual will step through the complete installation, programming and sequence
of operation for this control. At the back, there are tips for control and system
troubleshooting.
Getting Started
Table of Contents
Getting Started ...............................2
Installation ...........................................3
Caution............................................3
Preparation .....................................3
Removing The Wiring Cover...........3
Mounting The Thermostat...............4
Thermostat Wiring ..........................4
Compatible Sensors .......................5
Testing the Thermostat Wiring........5
Switch Settings....................................6
User Interface......................................7
Home Screen..................................7
Symbols Description.......................7
Programmable Settings.......................8
Programming Menus ......................8
Set Temp Menu..........................9-12
Time Menu............................... 12-13
Schedule Menu........................14-15
Display Menu ...........................15-16
Scenes Menu................................16
Monitor Menu...........................17-21
Toolbox Menu ..........................21-23
Setup Menu............................. 24-30
Sequence of Operation......................31
Heating Operation.........................31
Cooling Operation.........................32
Room Min and Max Limits ............33
Hydronic Pump / Valve Operation ....34
Fan Operation...............................34
Relative Humidity Operation.........35
Air Group Operation......................37
Time Clock....................................37
Temperature Adjustment ..............38
Programmable Schedules ............39
Scenes (System Override)............40
Secondary Temperature Display...41
Access Levels...............................42
tekmarNet®Address .....................42
Cleaning the Thermostat ..............42
Troubleshooting .................................43
Error Messages ...................... 43-47
Technical Data ..............................47
Limited Warranty and Product
Return Procedure .........................48

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A Watts Water Technologies Company
Preparation
tekmar or jeweller screwdriver
Phillips head screwdriver
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Wire Stripper•
Tools Required
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Materials Required
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18 AWG LVT Solid Wire
(Low Voltage Connections)
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Installation
Choose the placement of the thermostats early in the construction process to enable
proper wiring during rough-in.
Consider the following:
Interior Wall.
Keep dry. Avoid potential leakage onto the control.
Relative Humidity less than 90%. Non-condensing environment.
No exposure to extreme temperatures beyond 32-122°F (0-50°C).
No draft, direct sun, or other cause for inaccurate temperature readings.
Away from equipment, appliances, or other sources of electrical interference.
Easy access for wiring, viewing, and adjusting the display screen.
Approximately 5 feet (1.5 m) off the finished floor.
The maximum length of wire is 500 feet (150 m).
Strip wire to 3/8” (10 mm) for all terminal connections.
Use standard 8 conductor, 18 AWG wire.
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Installation Location
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Caution
Improper installation and operation of this control could result in damage to the equipment
and possibly even personal injury or death. It is your responsibility to ensure that this
control is safely installed according to all applicable codes and standards. This electronic
control is not intended for use as a primary limit control. Other controls that are intended
and certified as safety limits must be placed into the control circuit.
Removing The Wiring Cover
To remove the thermostat’s wiring cover:
Locate the slotted hole on the right side
of the thermostat.
Insert a screwdriver in the slotted hole
to depress the latch.
Remove the wiring cover from the
thermostat.
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A Watts Water Technologies Company
Thermostat Wiring
The thermostat operates a single heating system zone and can be wired in three
different ways.
Stand Alone - Similar to tekmarNet
®
4 wiring with tN4 wiring terminal not used. First
stage heating relay (Rh1 - W1) can be wired directly to switching relays.
tekmarNet®4- Allows the thermostat to be wired using 4 wires to a tN4 Wiring Center
or Zone Manager. The tN4 communication bus can also be daisy-chained to allow
multiple thermostats to be connected together without home running wires back to the
mechanical room.
tekmarNet®2- Allows the thermostat to be wired point-to-point using 2 wires to a tN2
Wiring Center, House Control, or Zone Manager. This allows easy wiring for retrofit
applications.
Application specific wiring diagrams are provided in the 557_A brochure.
If a gang box is not used:
Feed the wiring through the large
holes in the thermostat.
Use screws in the screw holes to
fasten the thermostat to the wall.
At least one of the screws should
enter a wall stud or similar rigid
material.
Terminate wiring to the wiring strip.
Re-install the wiring cover.
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Mounting The Thermostat
If a single gang box is used:
Feed the wiring through the large
holes of the thermostat.
Fasten the base of the thermostat to
the gang box using two screws.
Terminate wiring to the wiring strip.
Re-install the wiring cover.
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Stud
Wall
Thermostat
Wiring Cover
Stud
Thermostat
Wiring
Cover
31/4”
(83 mm)
Switch Box

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A Watts Water Technologies Company
Testing tekmarNet®2 Wiring
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Testing the Power
If the thermostat display turns on, this indicates that the thermostat is operating correctly
and there are no electrical issues. In the event that the display is off, or the display is
cycling on and off:
1. Remove the thermostat wiring cover.
2. Check to ensure that the tN2 wires on the thermostat are connected to a zone on a
House Control, Wiring Center, or Zone Manager.
3. Use an electrical meter to measure DC voltage between the tN2 terminals.
If the DC voltage is 0 V (dc) for at least 20 seconds, then there is an open or
short circuit in the tN2 wires.
If the DC voltage is 0 V (dc) for 10 seconds and then is 23 to 24 V (dc) for 5
seconds, this indicates the wiring is correct.
4. If the thermostat display is off, or is cycling on and off, move the thermostat to the
next available zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display remains permanently on, there may be a fault with the
previously tried zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display continues to be off, or is cycling on and off, there may
be a fault on the thermostat.
If a fault is suspected, contact your tekmar sales representative for assistance.
Testing tekmarNet®4 and Stand Alone Wiring
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Testing the Power
1. Remove the front cover from the thermostat.
2. Use an electrical test meter to measure (ac) voltage between the R and C terminals.
The reading should be 24 V (ac) +/– 10%.
3. Install the front cover.
Testing the Relay Outputs
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The thermostat includes a User Test to check if the thermostat’s relays are operating
and that the thermostat is wired correctly to the HVAC equipment. The User Test setting
can be located in the Toolbox menu. Either Heat or Cool test can be selected.
Cancel button - Exits the user test and returns the Toolbox menu.
Hold button - Pauses the user test step for up to 5 minutes.
Next Item button - Advances the user test to the next test step.
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Testing the Thermostat Wiring
Compatible Sensors
The thermostat is compatible with Indoor Sensor type 076, 077, 084, Slab Sensor
type 072, 073, 079, Outdoor Sensor type 070, Duct Sensor type 083 and Humidity &
Temperature Sensor type 086.

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A Watts Water Technologies Company
Switch Settings
Switch Position Action
1
ON LOCK ACCESS LEVEL
Thermostat is locally locked and the access level cannot be changed.
Set to Lock when installation has been completed.
OFF
UNLOCK ACCESS LEVEL
Thermostat is unlocked and the access level may be changed. Go to
the Toolbox menu to change the access level. Set to Unlock during
the installation process.
Note: tekmarNet®system controls include a Global Lock that locks all
connected thermostats. Set the tekmarNet
®
system control to unlock
to allow access level adjustment on all connected thermostats.
2ON
Not used
OFF
Not used
User Test Sequence
Heat Test Cool Test
Step Relay(s) Closed Step Relay(s) Closed
O Relay OFF Rc-O/B is opened O Relay ON Rc-O/B
B Relay ON Rc-O/B B Relay OFF Rc-O/B is opened
Fan Rc-G Fan Rc-G
Y1 Heat Rc-Y1 and Rc-G Y1 Cool Rc-Y1 and Rc-G
Y2 Heat Rc-Y1 and Rc-Y2 and
Rc-G Y2 Cool Rc-Y1 and Rc-Y2 and Rc-G
W2 Heat Rh2-W2 W2 Cool Rh2-W2
W1 Heat Rh1-W1 Humidify* ACC-ACC
Humidify* ACC-ACC Dehumidify* ACC-ACC or Rc-Y2
Dehumidify* ACC-ACC or Rc-Y2 HRV* Rc-Y2
HRV* Rc-Y2 Valve* ACC-ACC or Rc-Y2
Valve* ACC-ACC or Rc-Y2
*availability of test step and additional relay closures based upon Setup menu settings.
W1Rh1 Rh2 W2 ACC
Y2 Y1 Rc G1 O/B
S3
0-10
Vdc Com S2 S1 tN4 CR
Y2 Y1 Rc G1 O/

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A Watts Water Technologies Company
HEAT ON
Heat is turned on.
COOL ON
Cooling is turned on.
FAN
The fan is turned on.
%RH
Humidifying
%RH
Dehumidifying
SUN
Operating at the occupied (day)
temperature.
MOON
Operating at the unoccupied
(night) temperature.
tekmarNet®
Communication is present.
WARNING SYMBOL
Indicates an error is present.
ARROWS
Adjust the displayed setting.
SCENE AWAY
Operating at Away temperature.
TEMPORARY HOLD
Holds temperature for 3, 6, 9 or
12 hours.
WWSD
Warm Weather Shut Down.
COOL
Cooling system is on.
MIN or MAX
Reached the room min or max.
MIN FL or MAX FL
Reached the floor min or max.
Home Screen
Symbols Description
User Interface
Adjust
the Time
Adjust the
Schedule
Away Key
Switch between
Auto, Heat,
Cool, Off &
Emergency Mode
Home Button.
Return to the ‘Home’
Screen from any menu.
Press and hold for 3
seconds to access the
programming menus.
Room
Temperature
Turn the Fan on
The touchscreen of the 557 provides one touch access to these settings.
Home
Button
Adjust the
Temperature
Display Humidity, Heat &
Cool settings, Floor or
Outdoor temperature

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A Watts Water Technologies Company
Programmable Settings
Press and hold the Home button for 3 seconds to enter the programming menus. The
thermostat returns to the last programming menu previously used.
Programming Menus
Select a Programming Menu
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Touch “NEXT” to advance (clockwise in above illustration) to the next menu.
Touch “BACK” to go backwards (counterclockwise in above illustration) through
the menus.
Touch “ENTER” to enter a menu.
Setting Items
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Touch or arrow to adjust the setting if required.
Touch “NEXT ITEM” to advance to the next item within the menu.
Touch “BACK ITEM” to go backwards to the previous item within the menu.
To return to the parent menu after changing a setting, press and release the
Home button.
To return to the Home screen, press and release the Home button twice or wait
30 seconds to automatically return to the Home screen.
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Press and
hold for 3
seconds to
access the
programming
menus.

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A Watts Water Technologies Company
Set Temp Menu (1 of 4)
Setting Display
SET HEAT ROOM
Set the room heating temperature for the event.
Room
Access Level: Installer, User Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Always available Default: 70°F (21.0°C)
SET HEAT ROOM
Set the room heating temperature for the event.
Room
Access Level: Installer, User Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Schedules are in use or Scenes are
set to All or Guest. Default: 65°F (18.5°C)
SET HEAT ROOM AWAY
Set the room heating temperature for the Away
scene.
Room
Access Level: Installer, User Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Scenes is set to Away, All or Guest. Default: 62°F (16.5°C)
HEAT MINIMUM ROOM LIMIT
Set the minimum room heating limit.
Access Level: Installer Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Schedules are in use or Scenes are
set to All or Guest. Default: 40°F (4.5°C)
HEAT MAXIMUM ROOM LIMIT
Set the maximum room heating limit for the
event.
Access Level: Installer Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Always available Default: 85°F (29.5°C)
HEAT MAXIMUM ROOM LIMIT
Set the maximum room heating limit for the
event.
Access Level: Installer Range: 40 to 95°F (4.5 to 35.0°C)
Conditions: Schedules are in use or Scenes are
set to All or Guest. Default: 85°F (29.5°C)
WARM WEATHER SHUT DOWN
Set the outdoor air temperature at which heating is
suspended during the event.
Access Level: Installer Range: CTRL (control), 40 to
100°F (4.5 to 38.0°C), OFF
Conditions: An outdoor sensor must be available. Default: CTRL

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A Watts Water Technologies Company
Setting Display
WARM WEATHER SHUT DOWN
Set the outdoor air temperature at which heating is
suspended during the event.
Access Level: Installer Range: CTRL (control), 40 to
100°F (4.5 to 38.0°C), OFF
Conditions: An outdoor sensor must be available
and Schedules are in use or Scenes is set to All or
Guest. Default: CTRL
SET COOL ROOM
Set the room cooling temperature for the event.
Access Level: Installer, User Range: 50 to 100°F (10.0 to
38.0°C)
Conditions: Always Default: 78°F (25.5°C)
SET COOL ROOM
Set the room cooling temperature for the event.
Access Level: Installer, User Range: 50 to 100°F (10.0 to
38.0°C)
Conditions: Requires that Schedules are in use or
Scenes is set to All or Guest. Default: 85°F (29.5°C)
SET COOL ROOM AWAY
Set the room cooling temperature during the Away
scene.
Access Level: Installer Range: 50 to 100°F (10.0 to
38.0°C)
Conditions: Scenes is set to Away, All or Guest. Default: 85°F (29.5°C)
COOL MINIMUM ROOM LIMIT
Set the minimum room cooling limit while in the
event.
Access Level: Installer Range: 50 to 100°F (10.0 to
38.0°C)
Conditions: Always available. Default: 50°F (10.0°C)
COOL MINIMUM ROOM LIMIT
Set the minimum room cooling limit while in the
event.
Access Level: Installer Range: 50 to 100°F (10.0 to
38.0°C)
Conditions: Always available. Default: 50°F (10.0°C)
Set Temp Menu (2 of 4)