Tekmar 704 Mixing Station User Manual

1 of 16 © 2005 D 704 - 04/05D 70404/05Mixing Station 704- Data BrochureWARNING SYMBOL: THIS SYMBOL INDICATES THE PRESENCE OF HAZARDS WHICH CAN

© 2005 D 704 - 04/05 10 of 16 Wiring the SensorsDo not apply power to the sensors or the sensor terminals as this will damage either the sensors

11 of 16 © 2005 D 704 - 04/05POWER UPOn power up, the control displays all segments for 2 seconds followed by the control version number.

© 2005 D 704 - 04/05 12 of 16 Delta T MaximumThe Delta T Maximum sets the maximum temperature difference between the mixing return sensor and the

13 of 16 © 2005 D 704 - 04/05As in any troubleshooting procedure, it is important to isolate the problem as much as possible. By using th

© 2005 D 704 - 04/05 14 of 16 EEPROM Read ErrorThe control was unable to read the installers settings from its memory. The control was forced to

15 of 16 © 2005 D 704 - 04/05Technical Data1. Disconnect the electrical supply.2. Reduce system pressure to 0 psi and allow system to ret

tekmar Control Systems Ltd., Canadatekmar Control Systems, Inc., U.S.A.Head Office: 5100 Silver Star RoadVernon, B.C. Canada V1B 3K4(250) 545-7749 Fa

© 2005 D 704 - 04/05 2 of 16 Typical PipingBoiler SensorOutdoorSensorMixing Station 704, Multiple Temperature SystemSupplySensorSupplySensorBoile

3 of 16 © 2005 D 704 - 04/05Design Procedure1. Using the pump curve located below, ensure that the System Pump of the Mixing Station 704

© 2005 D 704 - 04/05 4 of 16 STEP ONE MOUNTING1. Mounting position – The Mixing Station 704 must be mounted in the vertical position with the

5 of 16 © 2005 D 704 - 04/05In order to properly control a hot water heating system, the amount of heat supplied to the building must equal th

© 2005 D 704 - 04/05 6 of 16 Outdoor DesignThe Outdoor Design temperature is the average coldest day of the year for the area in which the buildi

7 of 16 © 2005 D 704 - 04/05Outdoor DesignThe Outdoor Design temperature must be set to OFF.Mixing TargetThe Mixing Target temperature is set

© 2005 D 704 - 04/05 8 of 16 water temperature rises 1/2 of the differential above the required boiler supply temperature. If the differential is

9 of 16 © 2005 D 704 - 04/05STEP TWO - INSTALLING THE SENSORSOutdoor SensorNote: The temperature sensor is built into the plastic enclosu