Saving energy with Synco Tips and hints for installers Answers for infrastructure.
Content Massive savings made easy........................................................... 4 Synco controller: Our response to energy efficiency.................. 5 Operation ......................................................................................... 6 Operating mode concept ................................................................ 7 Energy saving functions: Heating ................................................. 8 Savings potential for Heating.......................................
Massive savings made easy The duties of an installer Installers are faced with high demands: • Plants and controls that are increasingly becoming more complicated should be set up in a manner that optimizes energy use. • Customers turn to installers to upgrade their plants to save energy. Savings without investments Measures applied to control technology are very attractive to the end customers since they deliver noticeable savings without the need for large investments.
Synco controller: Our response to energy efficiency The Synco controllers from Siemens represent an unrivaled response to energy efficiency in buildings: – Standard applications of the Synco controller range are classified fully under European standard EN 15232 ("Energy performance of buildings – Impact of building automation, controls, and building management). – eu.
Operation 3111Z07 Operator elements 1 Display 2 INFO button Function 1: Display key plant data. Function 2: Display information about the individual Plug-in type operator unit data points on the current menu. 3112Z08 3 OK select-and-press knob Turn: Select operating lines or adjust values. Press: Confirms operating line or setting. 4 ESC button 5 Fault button Return to previous menu. with LED LED lit/flashing: Fault displays. Press: Acknowledge or unlock fault.
Operating mode concept Operating mode concept The Synco device product range (heating and ventilation) has a common operating mode concept. Operating modes are set once, but used multiple times by the controller. The workflow is as follows: 1. 2. 3. Keep the setpoints for operating modes on reasonable defaults or modify to meet individual needs. Set times for the given operating modes (Time switch with weekly and special days). Enable various controller functions.
Energy saving functions: Heating Savings potential for Heating Overview of saving functions: A Optimum start/stop control (pp. 9, 10) F Interval operation of circulation pump (pg. 15) B Quick setback (pg. 11) G Heating circuit time switch (not described) C Heating limit switch (pg. 12) D Set mixing controller (pg. 13) H Holidays/special days (not described) E Domestic hot water setpoints (pg. 14) J Room and DHW operating modes (pg. 14) DHW circulation time switch (pp.
Optimum start control Plant Controller Target Heating Synco RMH760 Achieve Comfort or Precomfort setpoint at the start of use (per time switch). Savings potential – Precise reaching of the desired temperature conditions. – Prevent user interventions that waste energy. Description The heating circuit is switched on at an earlier time. The main parameters are the outside air and room temperatures (measured or calculated).
Optimum stop control Plant Controller Target Heating Synco RMH760 Achieve Economy or Protection mode setpoint at the end of use (per time switch). Savings potential – Precisely accurate achievement of the desired temperature conditions. – Prevent user interventions that waste energy. Description The heating circuit is switched off at an earlier time. Main parameters are outside air and room temperatures. Prerequisites – A room temperature sensor is available.
Quick setback Plant Controller Target Heating Synco RMH760 Quick setback achieves the new setpoint earlier for a change to room operating mode. Savings potential – Significantly reduces the operating hours of the heating circuit pumps and thus its energy consumption. Description Quick setback is enabled when changing room operating mode from Comfort or Precomfort to Economy or Protection mode, the heating circuit pump is shut down and the heating circuit mixer is closed.
Heating limit switch Plant Controller Target Heating Synco RMH760 Prevents unnecessary heating when the outside air temperature is “high”. Savings potential – The heat limit switch shuts down the heating circuit pump and heat output to the heating circuit. Description A heat limit (outside air temperature value) is established above which heating is not possible.
Set mixing controller Plant Controller Target Heating Synco RMH760 High level of control accuracy achieved by setting the mixing heating circuit in an optimum manner. Savings potential – An optimally set mixing valve achieves the desired temperature in an energy-efficient manner. Description The actuator runtime must be adjusted to the actual actuators. The setting is important for both 3-point actuators as well as for DC 0…10 V actuators.
Domestic hot water setpoints Plant Controller Target Heating Synco RMH760 Use domestic hot water operating modes together with the domestic hot water time switch. Savings potential – Adapting domestic hot water production to actual use opens up significant savings. Description A time switch project can be set for domestic hot water production (weekdays, special days). Domestic hot water production can operate in “normal” or “reduced” operating modes.
Interval operation circulation pump Plant Controller Target Heating Synco RMH760 Circulation pumps are operated at intervals (1/3 of the time) only. This saves electricity for the pump and is sufficient to maintain hot water supply. Savings potential – Savings of 2/3 of the electricity for circulation pump versus standard operations. Description During interval operation, the circulation pump operates on the hour and half hour for 10 minutes each time, in other words, with interruptions of 20 minutes.
Energy saving functions: Ventilation Savings potential for Ventilation Starting point We assume a plant with 2-speed fans, heating, cooling and heat recovery for the following function extensions. c Function… – Indoor air quality (B) is demand controlled. – Fans (A) for indoor air quality operate only when indoor air quality limit values are exceeded. d Function… – Room temperature (C) is demand controlled. – Fans (A) for room temperature operate only when temperature limit values are exceeded.
Demand-controlled indoor air quality M Xx [ppm] AQ (ppm) Speed 2 Fan speed 2 1 0 Plant Controller Target Ventilation Synco RMU7x0 The plant is only switched on if the indoor air quality limit values are exceeded. Savings potential – Minimizes fan operating hours.
Description The plant is ramped up in auxiliary mode for the Precomfort operating mode. Fans are switched on by indoor air quality. Prerequisites – Fans are available. – The measured value for indoor air quality (CO2/VOC ) is available on the controller. Enable function Main menu > Settings > Operating mode… Operating line Plant operating mode Sustained mode time minimum Setting value Sustained mode 00.
Demand-controlled room temperature M Time switch program Temp (°C) Fan speed 2 1 0 Plant Controller Target Ventilation Synco RMU7x0 The plant is only switched on if the temperature limit values are exceeded. Savings potential – Minimizes fan operating hours.
Description The plant is ramped up in sustained mode for the Precomfort operating mode. Fans are switched on by room temperature. Typical measured values for sustained mode include temperature, humidity or other universal controlled variables. Prerequisites – Fans are available. – Room temperature is available on the controller. Enable function Main menu > Settings > Operating mode… Operating line Plant operating mode Sustained mode time minimum Recommendation Sustained mode 00.
Monitor efficiency of heat recovery system M Xx [°C] Xx [EAT] Measuring arrangement for exhaust air Plant Controller Target Ventilation Synco RMU7x0 Ensure optimum heat recovery operation. Savings potential – Savings on operating costs by alarming in the event of insufficient heat recovery efficiency. Description – Comparative measurements between outside air, room/extract and exhaust air temperature. Heat recovery efficiency is determined from these values.
Max. economy changeover of heat recovery M Xx [EAT] Plant Controller Target Ventilation Synco RMU7x0 Optimized heat recovery saves heat and cooling energy (using a maximum economy changeover). Savings potential – Optimum control of heat recovery with regard to operating costs. Description – Principle: Comparative measurements between outside air and room/extract air temperature. – The output for the heat recovery equipment is inverted, if the set MECH limit value is exceeded.
Night cooling M Xx [RT] Plant Controller Target Ventilation Synco RMU7x0 Cooling of a room in summer during vacancy using the lower outside air temperature. Savings potential – Saves cooling energy. Description – Principle: Comparative measurement between outside air and room temperature. – Also possible with heating plants (without a cooling sequence). Prerequisites – Outside air temperature is available on the controller. – Room temperature is available on the controller.
Additional assistance for installers Your regional Siemens partner looks forward to supporting you with a number of offerings. Current highlights include: Web server OZW775 The Synco Web server OZW775 allows you to operate the plant in an optimum and efficient manner achieving savings. Extract from a June 2, 2009 press article: "You can control and monitor an HVAC plant at any time regardless of location via the web server OZW775 with any PC or smartphone.
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Siemens Switzerland Ltd Industry Sector Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel +41 41 724 24 24 Siemens Ltd Industry Sector Building Technologies Division Units 1006-10 10/F, China Resources Building 26 Harbour Road Wanchai, Hong Kong Tel +852 2870 7888 Siemens Building Technologies Industry Sector Brunel House Sir William Siemens Square, Frimley Camberley Surrey, GU16 8QD United Kingdom Tel +44 1276 696000 The information in this document conta
