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D 406 - 12/11

42 of 48

 Pump Operation 

Section J

Pump Exercising

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The control operates each pump every three days for 10 
seconds to help prevent corrosion and/or precipitate build up 
that that would cause the pump to seize. The control ensures 
that no heat is supplied to the zones during exercising.

HP Loop Pump

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The HP Loop Pump operation is explained in Section B.

DHW Pump

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The DHW Pump operation is explained in Section F.

Transfer Pump

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The Transfer Pump operation is explained in Section B.

Boiler System Pump

 

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The boiler system pump operates whenever all the 
following conditions are met:

A Boil Call is present and the thermostat calling for heat has 
the Heat 1 pump setting set to On.
OR a Backup Call is present and BACKUP is set to XFER 
or VAR.
OR a DHW Call is present and DHW MODE is set to 3 or 4.
There is no DHW or Setpoint priority.
The control is not in Warm Weather Shut Down.

Tank System Pump

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The Tank System Pump operates whenever all the 
following conditions are met:

A Tank Call is present.
The thermostat calling for heat has the Heat 1 pump set-
ting set to On.
The control is not in Warm Weather Shut Down.

Mix System Pump

 --------------------------------

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The boiler system pump operates whenever all the 
following conditions are met:

A Mix Call is present.
The thermostat calling for heat has the Heat 1 pump set-
ting set to On.
The control is not in Warm Weather Shut Down.





Xfr

The House Control 406 operates six different pump outputs 
on the back side of the enclosure. The “Pumps” box in the 
status field indicates which pumps are operating at any 
given time.

Status Field

Mixing Operation

Section I

The House Control 406 operates the variable speed pump output 
for mixing. The Variable % bar graph in the “Zones” box of the 
status field indicates the approximate speed of the pump.

Variable Speed Pump

A standard wet rotor circulator can be connected to the Variable 
Speed Pump output on the back of the control. The control 
varies the circulator speed to maintain the correct mixed supply 
water temperature at the mix supply sensor. For heating, the 
hot tank water temperature will be mixed down, and for cooling 
the chilled tank water temperature will be mixed up.
For correct sizing and piping of the variable speed pump, refer 
to essay E 021. 

Note:

  Pumps manufactured with an internal variable speed 

controller are not compatible with the House Control.

Manufacturer approved pump models for Variable Speed Pump output.

Grundfos (F)

Taco

B & G

Armstrong

Wilo

15-42 15-58 26-64 43-75 003 007 0010 0012 NRF 

9

NRF 

22

NRF 

33

Astro

Star S16FX

Star

** *** ** ***

25BU 30 50

*

**

*** S21FX 17FX 30F

*Speed 1,**Speed 2, ***Speed 3
These circulators have been tested and approved by the manufacturer for use with tekmar variable speed electronics.

The table below gives a list of 

manufacturer approved pump 

models for the Variable Speed Pump output.

Var

Status Field

Содержание tekmarNet 2 House Control 406

Страница 1: ...rts CSA C US Certified for use in USA and Canada Introduction The tN2 House Control 406 is designed to operate the equipment in a 2 pipe single tank hydronic heating and cooling system It operates two...

Страница 2: ...tended for use as a primary limit control Other controls that are intended and certified as safety limits must be placed into the control circuit Do not attempt to service the control Refer to qualifi...

Страница 3: ...llow proper wiring practices building and electrical codes for your jurisdiction Each cable must be pulled from the equipment to the electrical junction box It is recommended to label each cable for e...

Страница 4: ...ix System P DHW Pump Transfer Pum Variable Speed Pump Boil System Pump Figure 1 Connect Ground Wires Figure 2 Connect Neutral Wires for Power Source 1 Pull two conductor 18 AWG LVT cable up to 500 fee...

Страница 5: ...ly tucked inside the electrical box Using 2 of the 4 holes in the back of the enclosure securely fasten it to the junction box extension ring with 2 10 screws as shown in Figure 7 Install The Enclosur...

Страница 6: ...add additional Boil or Mix water temperature zones to the system install a tekmarNet Wiring Center Connect the Boil Mix terminals tN4 and C on the 406 to the corresponding tN4 and C Expansion termina...

Страница 7: ...heat pump Connect the Rc2 and Y2 terminals on the 406 to the R and Y2 terminals on the heat pump Connect the Rc1 and O B terminal on the 406 to the R and O or B terminal on the heat pump Wiring the A...

Страница 8: ...vided in the enclosure The other side of the terminal block is used to connect wires from the control A good quality test meter capable of measuring up to 5 000 k 1 k 1000 is required to measure the s...

Страница 9: ...peed setting Step 7 The mix system pump turns on for 10 seconds Step 8 The tank system pump turns on for 10 seconds Step 9 The O B contacts are closed for 10 seconds Step 10 The HP loop pump turns on...

Страница 10: ...easure between 103 5 V ac and 126 5 V ac Testing the Boiler Modulating Output This test applies for modulating boilers only Active the User Test sequence and pause at Step 18 by pressing the Item butt...

Страница 11: ...Menu An electric element in the system storage tank is switched on through an isolation relay with the backup relay on the 406 to provide backup heat to maintain the Tank Sensor S4 at its target temp...

Страница 12: ...Com Boil HPRt Out Com Zone 1 H8009B Zone 2 Zone 3 Zone 4 tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 Rc1 Y1 O B Sensors No Power No Power Call Call Mix DHW tN4 tN4 C C Mod dc mA Boil Mix Tank Rc2 Y2 Setpoint DHW...

Страница 13: ...nter 314 An electric boiler supplies backup heat using the Backup relay and the Transfer Pump P7 By setting HP LOOP to ON the HP Loop Pump P2 will operate whenever there is a call on the tank or mix b...

Страница 14: ...N 3 4 6 5 7 2 1 8 O C Y R O C Y R Transfer 314 Menu House Control 406 Item Tank Com Boil HPRt Out Com Zone 1 H8009B Zone 2 Zone 3 Zone 4 tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 Rc1 Y1 O B Sensors No Power No...

Страница 15: ...pump starts adding heat to the storage tank use the backup delay setting in the adjust menu This ensures the heat pump is being used to its full potential before backup is allowed Placing the Transfer...

Страница 16: ...ack red black black black 313 Menu House Control 406 Item Tank Com Boil HPRt Out Com Zone 1 H8009B Zone 2 Zone 3 Zone 4 tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 Rc1 Y1 O B Sensors No Power No Power Call Call M...

Страница 17: ...sed to its full potential before backup is allowed A non condensing boiler may be used since P1 provides boiler return protection preventing flue gas condensation Tank zones can have fan coils air han...

Страница 18: ...lack black black Variable Speed 314 T T Menu House Control 406 Item Tank Com Boil HPRt Out Com Zone 1 H8009B Zone 2 Zone 3 Zone 4 tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 Rc1 Y1 O B Sensors No Power No Power C...

Страница 19: ...or heating or mix the water temperature up above the dewpoint for floor cooling Expansion Tank Mechanical A406 5 S1 S2 S5 P3 tekmarNet 2 Thermostats tekmarNet 2 Thermostats P2 Z1 Z2 Z3 Z4 P5 Z9 Z10 Z1...

Страница 20: ...black black 3 4 6 5 7 2 1 8 314 313 Menu House Control 406 Item Tank Com Boil HPRt Out Com Zone 1 H8009B Zone 2 Zone 3 Zone 4 tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 Rc1 Y1 O B Sensors No Power No Power Call...

Страница 21: ...CONDS Units of measurement for current number WARNING Displays if an error exists on the system Symbols Display User Interface Aux Setpoint Xfr Var Item Field Displays the name of the selected item Nu...

Страница 22: ...sing the up or down button This will permit setting changes to the control Programming and Settings The 406 settings can be found in the Adjust menu When changing the items value the setting is saved...

Страница 23: ...re the control is currently trying to maintain at the tank sensor The tank target is calculated based on the outdoor design and tank design settings is displayed when no heat is required for tank zone...

Страница 24: ...ith TANK links zones 1 4 to the tank loop BOIL links zones 1 4 to the boiler loop MIX links zones 1 4 to the mixing loop Note This item is only available when either mix or boil water temperatures hav...

Страница 25: ...SECTION D The outdoor air temperature used in the heating curves that determine the tank mix and boiler target temperatures Typically set to the temperature of the coldest day of the year 70 to 200 F...

Страница 26: ...g device does not provide boiler protection when Boiler Type is set to EMS1 or EMS2 10 to 230 seconds Default 30 seconds Access Installer Set to BOILER MOTOR SPEED SECTION G Time in seconds from full...

Страница 27: ...HOVER SECTION E O Close O B contacts to operate heat pump in cool mode B Close O B contacts to operate heat pump in heat mode 2 to 20 F 1 to 11 C Default 4 F Access Installer Set to HEAT PUMP DIFFEREN...

Страница 28: ...CTION E Minimum compressor off time for the heat pump 10 to 180 minutes OVR Default 60 minutes Access Installer Set to BACKUP DELAY SECTION E The time that heat pump s have to run at full output befor...

Страница 29: ...only available when HP TYPE 2STG or ROT 0 to 9999 Hours Default 0 hr Access User RUN TIME BOILER The total on time of the backup relay since the item was last reset Press and hold the Up and Down butt...

Страница 30: ...Hours Default 0 hr Access Installer RUN TIME MIX SYSTEM PUMP The total running time of the Mix System Pump since this item was last reset Press and hold the Up and Down buttons while viewing to reset...

Страница 31: ...ble items When set to USER all thermostats are locked and the number of thermostat settings available are reduced OFF SEL Default Off Access Installer FACTORY DEFAULTS Loads the factory default settin...

Страница 32: ...ATERTEMP setting in the Adjust Menu to configure the proper water temperatures for the application The following table references application drawings with different water temperatures selected Applic...

Страница 33: ...so used to give a boiler enable to allow the modulating boiler to go through the ignition sequence The Backup relay may not be required on all modulating boilers EMS1 The Mod dc mA output uses 0 10 V...

Страница 34: ...ots of glass and high solar gains by extracting heat away from the slab before it is able to heat the room Floor is displayed in the Mode status field while doing floor cooling Enable Floor Cooling Fo...

Страница 35: ...utdoor design These two parameters set the upper point for each heating curve Adjust the BOIL DSGN MIX DSGN and TANK DSGN settings in the Adjust Menu Boiler and Tank Minimum The BOIL MIN and TANK MIN...

Страница 36: ...naturally recover better since there are longer periods of time between the heat pump transferring heat to or from the ground source GEO Source Staging Longer times between cycles Stage 2 ON Y2 Stage...

Страница 37: ...ontrol shuts down the heat pump when the outdoor temperature falls below an adjustable temperature to prevent energy waste from unnecessary heat pump operation during cooling Use the Y COOLING CWSD se...

Страница 38: ...Adjust Menu to adjust the preheat tank target The heat pump will target a water temperature 20 F 11 C higher than the preheat tank target at the return sensor The heat pump target is limited by the H...

Страница 39: ...here are four items that determine the boiler target temperature 1 2 Differential 1 2 Differential Boiler Target Boiler On Boiler Off Boiler Differential Both on off and modulating boilers are operate...

Страница 40: ...ings for House Control 406 with Common Modulating Boilers Modulating Boiler Operation The 406 can operate a single hot water modulating boiler using the Mod dc mA output and the Backup contact Not all...

Страница 41: ...setting Note Setpoint operation has no priority Boiler System Pump Setpoint Pump Setpoint ON ON or OFF Zone Pump ON or OFF Setpoint Operation The control can operate to satisfy the requirements of a...

Страница 42: ...g set to On The control is not in Warm Weather Shut Down Xfr The House Control 406 operates six different pump outputs on the back side of the enclosure The Pumps box in the status field indicates whi...

Страница 43: ...supply sensor As a result the control operates the variable speed pump at a fixed output as long as there is a Mix Call Locate and repair the problem as described in the Test the Sensor Wiring sectio...

Страница 44: ...me once the sensor problem is corrected The error message self clears once the error condition is corrected DOMESTIC HOT WATER CALL ERROR A DHW sensor and a DHW call have been applied at the same time...

Страница 45: ...cking for the flashing Warning symbol Once the error on the device is corrected the error message will clear DEVICE ERROR AT ADDRESS M 01 to M 24 Each tekmarNet device thermostat setpoint control time...

Страница 46: ...tem in AWAY During AWAY the thermostats operate at a lower temperature Locate a User Switch and set to Normal to resume heating MODE setting The mode of the 406 can be set to Auto Cool Heat Backup or...

Страница 47: ...TANK DSGN TANK MIN MIX DSGN BOIL DSGN BOIL MIN BOIL MOTR MIN MOD MOD DELAY WWSD OCC WWSD UNOCC INTERLOCK COOL SETP Item Setting DEW POINT COOL MIN SWITCHOVER HP DIFF HP2 DELAY HP LOOP HP RETURN MAX H...

Страница 48: ...sponsibility and obligation Pur chaser 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 a...

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