background image

Product design, software and literature are Copyright © 2011 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.

48 of 48

All specifications are subject to change without notice.

Printed in Canada. D 406 - 12/11.

tekmar Control Systems Ltd., Canada, tekmar Control Systems, Inc., U.S.A. 

Head Offi ce: 5100 Silver Star Road, 

Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650  Web Site: www.tekmarcontrols.com

Limited Warranty 

The liability of tekmar under this warranty is lim-

ited. The Purchaser, by taking receipt of any tekmar product (“Prod-
uct”), 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 pass-through 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 docu-
mented 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 prod-
uct; or to the exchange of the defective product for a warranty replace-
ment 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  liabil-
ity, 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 work-
manship or materials, including any liability for fundamental breach of 
contract.

The pass-through Limited Warranty applies only to those defective Prod-
ucts  returned  to  tekmar  during  the  warranty  period.  This  Limited  War-
ranty 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.

Any representations or warranties about the Products made by Purchaser 
to its customers which are different from or in excess of the tekmar Lim-
ited Warranty are the Purchaser’s sole responsibility 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 any such representations or warranties by Pur-
chaser to its customers.

The pass-through Limited Warranty does not apply if the returned Prod-
uct 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-VIOLA-
TION 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 PRODUC-
TION DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY 
THE GOVERNING LAW. 

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 informa-
tion regarding the appropriate Representative.

Technical Data

tekmarNet

®

2 House Control 406

 

Heat Pump & Backup, Four Zone Valves

Literature

D406, Q406, U406

Control

Microprocessor control. This is not a safety (limit) control

Packaged weight

1.4 lb. (640 g)

Dimensions

5.5” H x 5.5” W x 2.25” D (140 x 140 x 57 mm)

Enclosure

NEMA 1 rated, blue PC+ABS plastic

Approvals

CSA C US, meets class B: ICES & FCC Part 15

Ambient conditions

Indoor use only, 32 to 104°F (0 to 40°C), RH 90% Noncondensing

Power supply

24 V (ac) ±10% 60 Hz, 100 VA max, Class 2

Control Load

2 VA

Zone, Y1 and O/B Relays

24 V (ac) 3.7 A combined

Y2, Backup Relays

24 V (ac) 5 A

Pump Relays

115 V (ac) 5 A 1/6 hp

Variable Power

115 V (ac) 2.4 A

Pump Power

115 V (ac) 12 A

Boil/Mix modulating output

0 - 10 V (dc) 500 Ω min load impedance, 4 - 20 mA 1 kΩ max load impedance

Sensors

NTC thermistor, 10k   @ 77°F (25°C ± 0.2°C) ß=3892

- Included

Outdoor Sensor 070 and 4 of Universal Sensors 082

Warranty

Limited 3 Year

 Limited Warranty and Product Return Procedure 

Summary of Contents for tekmarNet 2 House Control 406

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Reviews: