Related Manuals for Danfoss HDU-SF
Summary of Contents for Danfoss HDU-SF
- Page 1 MAKING MODERN LIVING POSSIBLE Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) www.heating.danfoss.com...
- Page 2 Danfoss A/S is not liable or bound by warranty if these instructions are not adhered to during installation or service. The English language is used for the original instructions. Other languages are a translation of the original instructions. (Directive 2006/42/EC)
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Page 3: Table Of Contents
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Table of Contents Introduction .............. -
Page 4: Technical Data
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Note! HDU-SF are available with left or right side connections to riser. In this Service Guide all illustrations are shown for the left side version. Technical Data Max. temperature 90 °C Max. -
Page 5: Replacing The Strainer Filter
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Replacing the Strainer Filter 1. Close ball valves on supply and return inlet pipes. 2. Close all inlet manifold circuits after the AB-PM, using a 5 mm Al- len key. 3. Remove the strainer cap and replace the filter. -
Page 6: Power Supply
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Power Supply ▪ A 3.6 V DC lithium battery is fitted in the heat meter. ▪ The battery is not to be charged or short-circuited. ▪ Ambient temperatures below 40 °C extend the life of the battery. -
Page 7: Display Indications
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Display Indications Loop Sequence Window 1 Window 2 "1" Accumulated energy Main loop Volume Flow Power Forward temperature Return temperature Difference temperature Operating days Error status 1.10 Display test Loop Sequence... -
Page 8: Error Codes
Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Error Codes The error code is displayed in the main loop if an error occurs. The error display disappears automatically as soon as the cause of the error has been cleared. All errors present longer than 6 minutes are saved in the error log. - Page 9 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Installation of modules 1. Open the integrator by releasing the side catches. Slot 1 2. Engage the module in the relevant slot and carefully connect the pre- Slot 2 formed ribbon cable at both ends.
- Page 10 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) RS485 communication module The RS485 communication module is a serial interface for communication with external devices, e.g. PC. The module contains a 4-pole terminal strip with terminals marked D+, D- und +12-. The module needs an external power supply of 12 V DC ±5 V.
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Page 11: Replacing The Heat Meter
2. Energy test pulses. Other specifications (pulse value, pulse duration/break, pulse frequency) can be obtained from the Inspection and Test Instruction. Replacing the Heat Meter Ordering a new Heat Meter A new Heat Meter can be ordered at Danfoss by using the informations on the existing Heat Meter: 1. Product name Heat meter Heat meter SONOMETER™1100... - Page 12 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Installing a new Heat Meter 1. Install the brass part, use 2 new flat gaskets and remember backstop to prevent the ball valves from loosening. Make sure the arrow is placed in accordance with the flow direction.
- Page 13 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Danfoss Heating Solutions VIIGB102...
- Page 14 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) VIIGB102 Danfoss Heating Solutions...
- Page 15 Service Guide HDU-SF (Horizontal Distribution Units - Single Flat) Danfoss Heating Solutions VIIGB102...
- Page 16 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.