User manual DANFOSS RX2

[. . . ] Remote Sensor wiring should be in 1mm2 Mains Voltage Cable (not flexible cord). Sensor cable must not be run parallel to mains cable in order to avoid pick-up. Overleaf are typical wiring diagrams which together with the information above should enable all the services to be connected correctly. Ensure all dust and debris are cleared from the area. [. . . ] Remote Sensor to be wired with 1mm 2 core double insulated cable only. Cable length should not exceed 50 metres. Typical Gravity D. H. W. TP9 (Switch 1 to GRAVITY) Terminals HW CH HW CH OFF OFF ON ON Typical fully pumped system. TP9 (Switch 1 to GRAVITY) Terminals HW CH HW CH OFF OFF ON ON Typical Gravity D. H. W. TP9 (Switch 1 to PUMPED) Terminals HW CH HW CH OFF OFF ON ON NL123456 Mains Supply NL123456 Mains Supply NL123456 Mains Supply { N L 3 amp fuse Remote Sensor { N L 3 amp fuse Cyl. Stat. Remote Sensor { N L 3 amp fuse Cyl. Stat. Remote Sensor N N Looping Terminals N Looping Terminals Boiler N Pump N Looping Terminals Boiler & Pump N S. R. Z. V. in CH N S. R. Z. V in HW N Boiler N Pump N Other Danfoss Randall products suitable for use with the above control circuit:AT Cylinder Thermostat. HP22 or HP28 Motorised Zone Valve with Spring Return Actuator and SPST auxiliary switch. Other Danfoss Randall products suitable for use with the above control circuit:AT Cylinder Thermostat. HP28C Motorised Zone Valve with Spring Return Actuator and SPDT auxiliary switch. Typical fully pumped system with 3 port Mid-position Valve. TP9 (Switch 1 to PUMPED) Terminals Mains Supply HW CH HW CH OFF OFF ON ON Typical fully pumped system with S. R. Z. V. If the minimum temperature you can select is 16°C and you do not want the heating to switch ON at all whilst operating in this mode, you should ask your installer to fit an extra switch to the CH output. He can get the information he needs to do this from our Technical Services Department. 2. 3. Fig. Constant Low Temperature Mode. Switching from one type of operation to the next is acheived by pressing both temperature adjustment buttons (s , t) together. While operating as 1 or 3 above, the +1HR ON button can be pressed at any time to heat the Hot Water for an extra hour. Hot Water Only Mode, (Central Heating will switch on if room temperature falls below 5°C. ) First-Time Installation When the unit is first removed from its packaging the display will, most probably, just show two dots (the colon). THIS IS NOT A FAULT, but a battery saving feature. Once fitted in accordance with the Installation Instructions supplied and the mains electricity is switched on, the unit should be activated by pressing any button and then RESET. Reset Reset the unit by pressing and holding down the four buttons; TEMPERATURE up (s) and down (t), minus (-) and plus (+) all at the same time, for at least two seconds, until the display becomes completely blank. Release the buttons, and the unit will begin automatically with the display similar to Fig. 12:00PM with the colon blinking, 16°C, and the day (MO) shown if the unit is set for 5/2 day operation. Automatic Operation While the colon is blinking the clock is running and the unit will control your Central Heating (CH) and Domestic Hot Water (HW) in accordance with the set programme. The unit incorporates a Factory Pre-set Programme which is detailed in table 1 overleaf. Setting the Clock Checking and, if required, changing the Factory Pre-set Programme. To set the clock to the correct time and check the factory pre-set programme, or change it to suit your lifestyle, use the PROG, minus (-) and plus (+) buttons. Starting from the RUN mode (with the colon blinking); each press of the PROG buttons steps through the checking and setting sequence, which is listed in table 2 overleaf. This product complies with the following EC Directives: Electro-Magnetic Compatibility Directive. [. . . ] This will extend an existing ON period by an hour, or switch ON for just one hour d Off 10:30PM if the Hot Water is OFF. If the unit is disconnected from the mains supply, either intentionally or due to a power-cut, the life-long integral battery will retain both time-of-day, day, and the programmed times for fifteen days. During this period the display will appear normal except for the blinking battery symbol, with the clock keeping time. On the sixteenth day of continuous interruption of power, the clock will stop and the display will become blank, except for the colon which will be on continuously. [. . . ]