Tekmar 402 House Control Installation User Manual

1 of 32 © 2010 D 402 - 09/10tekmarNet®2 House Control 402D 40209/10HVAC SystemsReplaces: 01/10Installation & Operation ManualMenuHouse Control 4

© 2010 D 402 - 09/10 10 of 32Step 8 The DHW pump turns on for 10 seconds.Step 9 The boiler system pump turns on for 10 seconds.Step 10 During the boil

11 of 32 © 2010 D 402 - 09/10ApplicationsMixBoilDHWVariable Speed(P4)(P1)(P3)(P2)115 V (ac)NLGto pump groundsNLBack of House Control 402Strip wires1

© 2010 D 402 - 09/10 12 of 32Description: The House Control 402 operates a modulating boiler with indirect Domestic Hot Water. Mixing is performed wit

13 of 32 © 2010 D 402 - 09/10CallsCALLSDisplays any call for heat the control is receiving. PumpsPUMPSDisplays any pump currently operating.Zones1 2

© 2010 D 402 - 09/10 14 of 32Navigating The DisplayMenu Button ---------------------------------------------------------------------------------------

15 of 32 © 2010 D 402 - 09/10Item Field Range DescriptionVIEWZonesCallsPumps-76 to 149°F(-60.0 to 65.0°C)OUTDOOR SECTION B, CCurrent outdoor air te

© 2010 D 402 - 09/10 16 of 32Item Field RangeAccessDescription Set toADJUST-60 to 45°F(-51.0 to 7.0°C)Default = 10°F(-12.0°C)InstallerOUTDOOR DESIGN

17 of 32 © 2010 D 402 - 09/10Item Field RangeAccessDescription Set toVIEW70 to 200°F(21.0 to 93.5°C)Default = 180°F (82.0°C)InstallerBOILER DESIGN

© 2010 D 402 - 09/10 18 of 32Item Field RangeAccessDescription Set toADJUST40 to 100°F(4.5 to 38.0°C)Default = 70°F(21.0°C)InstallerUserWWSD OCCUPIED

19 of 32 © 2010 D 402 - 09/10Item FieldRangeDescriptionMONITOR-76 to 149°F(-60.0 to 65.0°C)OUTDOOR HIGHRecords the highest outdoor temperature since

© 2010 D 402 - 09/10 2 of 32 Table of Contents Getting Started Caution Installation ...

© 2010 D 402 - 09/10 20 of 32Item FieldRangeDescriptionOn or OffDefault = OffUSER TEST TESTINGBegins the test routine which tests the main control’s

21 of 32 © 2010 D 402 - 09/10Sequence of Operation tekmarNet® System Section AtekmarNet® is a family of products that use communication to operate t

© 2010 D 402 - 09/10 22 of 32Mixing Device Type ----------------------------------------------------------------------------------- ------------------

23 of 32 © 2010 D 402 - 09/10 Domestic Hot Water Tank Operation Section DA DHW Call is required in order for the control to provide heat to a DHW ta

© 2010 D 402 - 09/10 24 of 32DHW MODE 3 - DHW in Primary / Secondary no PriorityWhen a DHW Call is present, the DHW pump and the boiler system pump is

25 of 32 © 2010 D 402 - 09/10 Setpoint Operation Section EA Setpoint Call is required in order for the control to provide heat to a setpoint load, s

© 2010 D 402 - 09/10 26 of 32Boiler Maximum -------------------------------- --------------------------------The 402 will operate the boiler so that t

27 of 32 © 2010 D 402 - 09/10Auto Differential -------------------------------- --------------------------------Both on-off and modulating boilers a

© 2010 D 402 - 09/10 28 of 32The “$aving” icon is displayed when energy is being saved. The following features reduce energy consumption.Network Sched

29 of 32 © 2010 D 402 - 09/10Error Message DescriptionOUTDOOR SENSOR OPEN CIRCUITDue to an open circuit (disconnected or broken wire), the control f

3 of 32 © 2010 D 402 - 09/10Materials Required ----------------------------------------------------------------------------------- -----------------

© 2010 D 402 - 09/10 30 of 32 Error Messages (3 of 3) Error Message DescriptionMIX DEVICE LOST (1:01 TO 1:24)Each tekmarNet® device (thermostat, setpo

31 of 32 © 2010 D 402 - 09/10Symptom Look For...Corrective ActionNo central heatingBurner symbol on LCDIf the burner symbol is on the LCD, there is

Product design, software and literature are Copyright © 2010 by:tekmar Control Systems Ltd. and tekmar Control Systems, Inc.32 of 32All specifications

© 2010 D 402 - 09/10 4 of 32The control requires an external transformer. A tekmar Transformer 009 (or 009K which includes a 4”x 4” electrical box) ca

5 of 32 © 2010 D 402 - 09/10DHW PumpMix System PumpPower Source (L,N)V. S. PumpBoil Sys PumpBoil System PumpMix System PumpDHW PumpVariab leSpeed Pu

© 2010 D 402 - 09/10 6 of 32External Power SupplyIt is strongly recommended that a transformer with an in-line fuse be used in order to protect the tr

7 of 32 © 2010 D 402 - 09/10RCLNComOpenCloseExpansiontN4 BoilCtN4ModulatingBoiler—+ExpansiontN4 MixCtN421WCWCMenuHouse Control 402Item+Mix ComBoil O

© 2010 D 402 - 09/10 8 of 32Connect 18 AWG or similar wire to the two terminals provided in the enclosure and run the wires from the 070 to the contro

9 of 32 © 2010 D 402 - 09/10A good quality test meter capable of measuring up to 5,000 kΩ (1 kΩ = 1000 Ω) is required to measure the sensor resistan