Danfoss HC-Z Link HC Hydronic Controller Installation Guide
- June 5, 2024
- Danfoss
Table of Contents
Danfoss HC-Z Link HC Hydronic Controller
Introduction
Danfoss Link™ is a wireless control system for a variety of heating systems. The Danfoss Link™ HC (Hydronic Controller) is a part of this system allowing wireless control of manifolds for water based floor heating/cooling.
Mounting
The Danfoss Link™ HC should always be mounted in an horizontal upright position.
Mounting on wall
Remove front and side covers and mount with screws and wall plugs.
Mounting on DIN-rail
Connections
Make sure that all connections to the Danfoss Link™ HC are completed, before connecting to a 230 V power supply.
Connecting actuators (24 V)
If NC (normally closed) actuators are installed for ON/OFF regulation, no
further actuator output con-figuration is needed.
Connecting pump and boiler controls
The relays for pump and boiler are potential free contacts and can thus NOT be
used as direct power supply. Max. load is 230 V, 8 (2) A.
Connections for Away Function
The Away Function ensures a set room temperature fixed at 15°C for all Room
Thermostats, but it can be changed with the Danfoss Link™ CC.
Connections for Heating & Cooling
When the system is in cooling mode the actuator output will be activated (ON
for NC actuators / OFF for NO actuators) when the temperature in a room
exceeds the set point. When the system is in cooling mode an independent dew-
point alarm function should be installed.
Power supply
When all actuators, pump and boiler controls and other inputs are installed,
connect the supply plug to a 230 V power supply. If the power supply plug is
removed during installation, make sure that the connection is made ac-cording
to existing law/legislation.
Wiring diagram
External antenne
The external antenna is installed as diverter when there is no transmission
possible through a large building, heavy construction or metal barrier, e.g.
if the Danfoss Link™ HC is located in a metal cabinet/box
Configuration
Adding Danfoss Link™ HC to the system
Adding Danfoss Link™ HC to a system is made from the Danfoss Link™ CC Central
Controller. For further information, see the Danfoss Link™ CC instruction
manual: Configuration 7: Adding service devices.
Configure Danfoss Link™ HC
Configuration Danfoss Link™ HC to a system is made from the Danfoss Link™ CC
Central Controller. For further information, see the Danfoss Link™ CC
instruction manual: Configuration 7: Adding service devices.
Configure outputs
Configure inputs
Add an output to a room
Configuration Danfoss Link™ HC to a system is made from the Danfoss Link™ CC
Central Controller. For further information, see the Danfoss Link™ CC
instruction manual: Configuration 7: Adding service devices.
Configure a room
- Forecasting method : by activation of the forecast method, the system will automati-cally predict the heating start-up time necessary to reach desired room temperature at desired time.
- Regulation type: only in connection with electrical heating systems.
Remove an output
Factory reset
- Disconnect the power supply for Danfoss Link™ HC.
- Wait for green LED to turn off.
- Press and hold the Install / Link Test.
- While holding the Install / Link Test, reconnect the power supply.
- Release the Install / Link Test, when the LED’s are on.
Troubleshooting
Degraded mode| The actuator will be activated with a 25% duty cycle, if
the signal from the room thermostat is lost.
---|---
Flashing output / alarm LED(s)| Output or actuator is short-circuited or
the actuator is disconnected.
Technical specifications
| Transmission Frequency | 862.42 Mhz |
|---|---|
| Transmission range in normal constructions | up to 30 m |
| Transmission power | < 1 mW |
| Supply voltage | 230 VAC, 50 Hz |
| Actuator outputs | 10 x 24 VDC |
| Max. continued output load (total) | 35 VA |
| Relays | 230 VAC / 8 (2) A |
| Ambient temperature | 0 – 50°C |
| IP class | 30 |