Quick Setup Guide |
402_Q |
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tekmarNet®2 House Control 402 |
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02/14 |
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HVAC Systems Replaces: 01/14 |
1. Location |
2. Install Junction Box |
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402 |
402 |
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3. Size Transformer
Zone |
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Thermostat Load |
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Transformer |
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Zone Valve Load |
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Floating |
Control |
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must exceed: |
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Action (VA) |
Load (VA) |
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Total Zone Load |
+ |
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+ |
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+ |
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2 |
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VA |
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4. Install Sensors
Outdoor Sensors
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Sensor with rear |
Sensor with bottom |
Sensor mounted onto |
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entry wiring |
entry wiring |
2" x 4" electrical box |
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Pipe Sensors
Retaining Clip
Universal
Sensor 082
5. Line Voltage Wiring
Mix |
(black) |
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Boil |
(black) |
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DHW 
(black)
(red)
L
(blue)
N |
Variable |
Speed |
to pump grounds
Back of House Control 402
Mix System Pump
Boil System Pump
DHW Pump
Pump Power L 
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Strip wires |
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1/2 inch (13 mm). |
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Installed wires are |
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Variable |
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not removable. |
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12-18 AWG |
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Speed Pump |
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L N G
115 V (ac)
Sensor Well
A Watts Water Technologies Company |
1 |
© 2014 |
402_Q - 02/14 |
6. Install Enclosure
7. Low Voltage Wiring
tekmarNet®2 Thermostats
24 V (ac) Floating
Action Actuator
Com
Open
Close
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Mix Supply |
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Sensor 082 |
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Outdoor |
Boiler Supply |
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Sensor |
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Sensor 082 |
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070 |
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DHW Tank
Sensor 082
Setpoint Call
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tN2 |
tN2 |
tN2 tN2 tN2 tN2 tN2 tN2 |
C Opn Cls |
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Zone 1 |
Zone 2 |
Zone 3 |
Zone 4 |
Floating Action |
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Call DHW Com Out Boil Com Mix |
Setpoint Power No - Sensors |
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Menu |
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Item |
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Stage 2 Mod dc/mA Boil Exp. Mix Exp. + tN4 C tN4 C |
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Call |
DHW |
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House Control 402 |
Stage 1 |
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H8007D |
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Zone 1 |
Zone 2 |
Zone 3 |
Zone 4 |
Input Power |
Use at least 167°F |
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C |
Vlv |
C |
Vlv |
C |
Vlv |
C |
Vlv |
C |
R |
(75°C) conductors |
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tN4 Mix |
tekmarNet |
® |
4 |
C |
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WC |
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Expansion |
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tN4 |
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Expansion to |
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Wiring Centers, |
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C |
tN4 Boil |
Timers, or |
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Expansion |
WC |
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tN4 |
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User Switch |
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— |
Modulating |
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+ |
Boiler |
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2 |
1 |
One or Two Stage
Boiler T-T
DHW Call |
R |
L |
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from DHW |
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C |
N |
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Tank Aquastat |
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(optional) |
Zone Valves |
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24 V (ac) Transformer 009 |
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8. Install Cover
Menu |
Item |
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House |
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Control 402 |
A Watts Water Technologies Company |
2 |
© 2014 |
402_Q - 02/14 |
9. User Interface
Display
Menu Field
Displays the current menu
Status Fields
Displays the current status of the control’s inputs, outputs and operation. Most symbols in the status field are only visible when the VIEW Menu is selected
VIEW |
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ADJUST |
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MONITOR |
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minhr |
MINMAX |
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sec |
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PMAM |
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Calls |
Pumps |
WWSD Saving |
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Boil Exp |
Boil System |
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Cls |
Mix Exp |
Mix System |
Zones |
1 2 |
Opn |
DHW Setp |
DHW Var |
1 2 3 4 |
Mix |
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Item Field
Displays the name of the selected item
Number Field
Displays the current value of the selected item
Symbols
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Calls |
CALLS |
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°F°C |
°F, °C, %, HOURS, MINUTES, SECOND |
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Displays any call for heat the control is |
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minhr |
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Units of measurement for current number. |
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receiving. |
sec% |
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Pumps |
PUMPS |
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UNOCCUPIED |
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Indicates that a User Switch or Timer has |
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Displays any pump currently operating. |
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put the system into UnOccupied. |
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Zones |
ZONES |
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BOILER |
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Indicates that the boiler should be |
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1 2 3 4 |
Displays if an on-board zone is operating. |
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heating. |
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WARNING |
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DEVICE OUTPUT SCALE |
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Displays output of the mixing valve or |
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Displays if an error exists on the system. |
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injection pump. |
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Saving |
ENERGY SAVING INDICATOR |
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Cls |
CLOSE / OPEN |
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Displays when the system is saving |
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Opn |
Displays whether the mixing valve motor |
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energy. See the Saving Indicator section. |
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is opening or closing. |
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WWSD |
WWSD |
MINMAX |
MIN / MAX |
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Displays when the system is in Warm |
Displays when an operating temperature |
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Weather Shut Down. |
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reaches a minimum or maximum value. |
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10. Access Level
Press menu button until the Toolbox Menu 
is displayed. Press item button to locate the access level setting.
INST (Installer)
or USER
Default = INST
ACCESS LEVEL
Selects the Access Level of the control, which determines the Menu items available. USER provides the most limited level of access and shows the fewest possible items.
When set to USER, all thermostats are locked and the number of thermostat settings available are reduced.
A Watts Water Technologies Company |
3 |
© 2014 |
402_Q - 02/14 |
11. Critical Settings
Press menu button until the Adjust Menu is displayed. Press item button to locate the desired setting.
Item Field |
Range |
Access |
Description |
Set to |
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ADJUST 
ADJUST 
ADJUST
-60 to 45°F |
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OUTDOOR DESIGN |
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Typically set to the temperature of the coldest day of |
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(-51.0 to 7.0°C) |
Installer |
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the year. The outdoor air temperature used in the boiler |
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Default = 10°F |
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and mixing heating curves that determine the boiler |
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(-12.0°C) |
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target and the mix target temperatures. |
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MIX DESIGN |
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The supply water temperature required for the mix |
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zones to heat the building on the typical coldest day |
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70 to 180°F |
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of the year. Recommendations: |
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(21.0 to 82.0°C) |
Installer |
High mass radiant floor = 120°F (50°C) |
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Default = 120°F |
Low mass radiant floor = 140°F (60°C) |
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(49.0°C) |
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Fancoil or air handling unit = 190°F (90°C) |
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Copper fin-tube convector = 180°F (80°C) |
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Radiators = 160°F (70°C) |
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Low profile baseboard = 150°F (65°C) |
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MIX TYPE |
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4-20 mA, |
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Select the type of mixing device. |
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VAR = Variable speed injection pump |
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0-10 V (dc) |
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FLOT = Floating action motor for mixing valves |
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FLOT, |
Installer |
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0-10 = 0 -10 V (dc) analog signal for mixing valves |
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VAR |
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Default = VAR |
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4-20 = 4-20 mA analog signal for mixing valves |
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Note: 0-10 and 4-20 are only available when Boiler |
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Type = 1 Stage or 2 Stage. |
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BOILER TYPE |
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The type of boiler connected to the control. |
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EMS2, |
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1STG = single one-stage on-off boiler |
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EMS1, |
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2STG = single two-stage on-off boiler |
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4-20 |
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0-10 = 0-10 V (dc) modulating boiler |
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0-10, |
Installer |
4-20 = 4-20 mA modulating boiler |
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2STG, |
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EMS1 = tekmar boiler staging controls |
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1STG |
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EMS2 = Viessmann modulating boilers with |
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Default = 1STG |
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OpenTherm |
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Note: Only 1STG and 2STG are available when the |
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Mix Type is set to 0-10 V (dc) or 4-20 mA. |
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tekmar Control Systems Ltd., A Watts Water Technologies Company. Head Office: 5100 Silver Star Road, Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarControls.com
Product design, software and literature are Copyright ©2014 by |
4 |
All specifications are subject to change without notice. |
tekmar Control Systems Ltd., A Watts Water Technologies Company |
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Printed in Canada. 402_Q - 02/14. |
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