Danfoss Link Connect Thermostat User Guide

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Application Guide  

Heating Control  

Danfoss Link™ & Connect Thermostats  

www.heating.danfoss.com  

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	Danfoss Link Connect Thermostat User Guide
Make	Danfoss
Language	English
Filetype	PDF (Download)
File size	1.26 MB

Download PDF

(1 votes, average: 5.00 out of 5)

Loading...

• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Danfoss

Danfoss Link Connect Thermostat User Guide Overview

Summary of Contents

• Page 1: Application guide for heating control. Danfoss Link™ and Connect thermostats.
• Page 2: Application Guide Heating control with Danfoss Link™ & Connect Thermostats Introduction Segment Danfoss Eco® programmable radiator thermostat Overview of units in a Danfoss Link™ system Number of units in a Danfoss Link™ system Best practice General guidelines Heat supply Functions Rooms Applications Heating system with boiler Heating system with central boiler District heating Heat pump
• Page 3: Application guide for heating control with Danfoss Link™ and Connect Thermostats. This guide covers the use of Danfoss Link™, Danfoss Link™ Connect Thermostat wireless heating controls, and Danfoss Eco™ in residential settings. Danfoss Eco™ is a stand-alone intelligent and programmable radiator thermostat for residential use without a central control system. Danfoss Eco™ is easy to install and comes with adapters for various thermostatic valves. The Danfoss Link™ system includes several units, such as the Danfoss Link™ CC Central Controller, which is essential for controlling the entire installation. Danfoss Link™ RS Room Sensor measures and adjusts room temperature. Danfoss Link™ HC Hydronic Controller manages hydronic floor heating with extensive functions. Danfoss Link™ BR Boiler Relay turns gas and oil boilers ON/OFF based on heating demand. Danfoss Link™ FT Floor Thermostat measures and adjusts electrical floor heating. Danfoss Link™ RU Repeater Unit extends the wireless transmission range between Danfoss Link™ CC and other system units.
• Page 4: Application guide for heating control with Danfoss Link™ and Connect thermostats outlines important rules for building a wireless control system. The total number of units must not exceed 50, including 1 Danfoss Link™ Central Controller and 49 units. Specific limits for each type of unit include: - 1 Danfoss Link™ CC - 30 Connect Thermostats - 3 Danfoss Link™ HC - 30 Danfoss Link™ RS - 30 Danfoss Link™ FT - 1 Danfoss Link™ BR - 3 Danfoss Link™ RU It is advised to avoid disconnecting mains powered units in a Danfoss Link™ system. The system will eventually re-establish the network when the repeater unit is reconnected to mains power. Using Danfoss Link™ RU is recommended when a repeater is needed to extend the radio communication range. Several mains powered units can act as repeaters but have limited capability compared to Danfoss Link™ RU. Danfoss Link™ RU repeaters should always be registered as the first 230 V units in the system.
• Page 5: Application guide for heating control with Danfoss Link™ and Connect thermostats. Danfoss Link™ RS is designed to measure room temperature and control the Connect thermostats. It is useful in applications where the actual temperature at the Connect thermostat differs significantly from the desired room temperature or when multiple radiators are present in the same room. Do not install Danfoss Link™ RS on outer walls or in direct sunlight. Best performance is achieved when the RS is positioned 1 to 5 meters from the radiator. The installation height should typically be between 80-150 cm. Select the proper settings for the Connect thermostat and Danfoss Link™ RS on Danfoss Link™ CC. Choose the “covered radiator” option if the radiator is behind a fixed cover or heavy furniture. In wet rooms, install Danfoss Link™ RS according to local building regulations. Maintain at least 50 cm distance from windows or doors that will be opened occasionally.
• Page 6: Application guide for heating control with Danfoss Link and Connect thermostats. If the heating system is optimized for constant set temperature, adjustments may be needed for setback periods. The system must supply enough heat to raise the room temperature at least 1 °C per hour. Heating systems typically need to supply 25% more heat during heat up compared to a steady temperature. Achieving 25% extra capacity in a system requires specific actions related to valve presetting, pump pressure, and water temperature. Maximum acceptable settings for presetting, water temperature, and pump differential pressure vary by system and application. For radiator valves with pre-setting, balance the system to ensure adequate flow. The supply line temperature at radiator valves should be above 40 °C for optimal control. Ensure that supply water temperature and flow are adequate to provide enough energy. Increase temperature or pump level if necessary.
• Page 7: Application guide for heating control with Danfoss Link and Connect Thermostats. Connect Thermostats automatically shut off heat while the room is ventilated. The thermostat closes the valve when it detects a drop in room temperature. It will automatically open the valve again after 30 minutes to prevent excessive cooling. Manual temperature adjustment is required during longer ventilation periods. The thermostat will not detect a new ventilation session for 45 minutes after the previous one. A large window sill may prevent the thermostat from detecting cold air. Settings should be adjusted if the radiator is under or oversized for the room. Refer to the Connect Thermostat installation and user guide for changing settings. Document version is VAIDD402, © Danfoss, 07/2016.
• Page 8: Application guide for heating control with Danfoss Link™ and Connect thermostats. The adaptive learning function ensures that the comfort temperature is reached at the set time. Adaptive learning uses data from the previous 7 days to reach the correct temperature at the right time. Adaptive learning is sensitive to large, rapid temperature changes. Covering the radiator with furniture, curtains, or a radiator cover might cause heat to accumulate around the thermostat. For light curtain/furniture, the Connect Thermostat can be used, but function is improved by using a RS room sensor. For medium curtain/furniture, use the Connect Thermostat with Danfoss Link™ RS room sensor. For radiator covers, use the Connect Thermostat with Danfoss Link™ RS room sensor. Danfoss Eco™ can be used, but it might be necessary to raise the set temperature. If two radiators are placed within 40 cm of each other, the heat emission from one radiator can affect the thermostat on the other radiator. Balance the two radiators by adjusting the set temperature on the affected radiator.
• Page 9: Application guide for heating control with Danfoss Link™ and Connect thermostats. Direct heat radiation from large radiators may disturb the Connect Thermostat's ability to measure room temperature correctly. Mount the thermostat pointing away from the radiator for optimal performance. The optimal solution is a Connect Thermostat with a Danfoss Link™ RS room sensor. Danfoss does not recommend using an angle adapter; the valve should be turned or replaced instead. A fireplace in the room can affect the adaptive learning function of the Connect Thermostat. If using a fireplace regularly, it is recommended to deactivate the adaptive learning. Deactivating the adaptive learning function allows the Connect to work as a traditional thermostat, but with a delay in heating. Sunlight from large windows can also affect the adaptive learning function of the Connect Thermostat. Continuous draft from a leaky window or garden door will disturb the heating control.
• Page 10: Application guide for heating control with Danfoss Link and Connect Thermostats. Connect Thermostats are primarily designed for use with supply valves. They can also be used with return valves on small radiators. A rule of thumb is that the radiator should be smaller than 120 cm diagonally. Connect Thermostats are not recommended for larger radiators with return valves. Neither Connect Thermostat nor Danfoss Eco should be used on convectors in floor trenches.
• Page 11: Application guide for heating control with Danfoss Link™ and Connect thermostats. A boiler can provide instant heat for both the heating system and domestic hot water. The system can operate with or without a Danfoss Link™ BR (Boiler Relay). Minimum requirements include a supply temperature of at least 40 °C at the valve and sufficient heating capacity to increase room temperature by 1 °C per hour. Only radiator valves approved for Danfoss adapters should be used. A bypass valve is recommended. If using a central room temperature controller with Connect Thermostats, it should only serve as a temperature limiter. The boiler should be active when the Connect Thermostat is programmed to warm if it is turned off or has reduced temperature during the night. With a forecast, the boiler should start up to 3 hours before the comfort period. Without a forecast, the boiler should typically start up ½ hour before the comfort period.
• Page 12: Application guide for heating control with Danfoss Link™ and Connect thermostats. Weather compensation is essential for adjusting the boiler’s heating curve. The heating curve must be increased to raise room temperature after a setback period. Long setback periods may require further increases in the heating curve. Short economy periods may need less increase in the heating curve. Set Danfoss Link™ BR boiler relay to automatic ON/OFF in the setup menu.
• Page 13: Application guide for heating control with Danfoss Link™ and Connect thermostats. A large gas, oil, or pallet boiler provides hot water to several households. Minimum requirements include a minimum 40 °C supply temperature at the valve and sufficient heating capacity to increase room temperature by 1 °C per hour. Only radiator valves approved for Danfoss adapters should be used. If the boiler is turned off or has reduced temperature at night, ensure it is active when the Connect Thermostat is programmed to warm. In a system with Danfoss Link™ CC and Connect Thermostat, automatic control can be achieved by adding a boiler relay. The forecast period for boiler operation should vary over the year. Typically, the boiler will start up to 3 hours before the comfort period without forecast settings. If the boiler’s heating curve is set for constant comfort temperature, it must be increased to raise room temperature after a setback period. Adjustments to the heating curve may be necessary based on the length of setback and economy periods.
• Page 14: Application guide for heating control with Danfoss Link™ and Connect thermostats. District heating is generated in a centralized location and distributed to residential and commercial use. Minimum requirements include a minimum 40 °C supply temperature at the valve and sufficient heating capacity to increase the room temperature by 1 °C per hour. Only radiator valves approved for Danfoss adapters should be used. If the boiler’s heating curve is set to maintain comfort temperature, it must be increased to raise the room temperature after a setback period. Long setback periods may require further increases in the heating curve. Short economy periods may require less increase in the heating curve.
• Page 15: Application guide for heating control with Danfoss Link™ and Connect thermostats. A heat pump generates heating by transferring heat from a low-temperature reservoir to a higher temperature. Minimum requirements include a minimum 40 °C supply temperature at the valve and sufficient heating capacity to increase room temperature by 1 °C per hour. Only radiator valves approved for Danfoss adapters should be used. If the heat pump’s heating curve is set for constant comfort temperature, it must be increased to raise room temperature after a setback period. Long setback periods may require further increases in the heating curve. Short economy periods may require less increase in the heating curve. If the system is installed when outside temperature is above 10 °C, the opening point will not be found until the temperature drops below 7-8 °C. Manually setting the heating curve higher during the run-in period can resolve this issue.
• Page 16: Application guide for heating control with Danfoss Link™ and Connect thermostats.