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Heating system with a buffer tank (Hy0407)

Heating system with a buffer tank (Hy0407)

The buffer tank is loaded by an external heat source ( solid fuel boiler etc.). In case the buffer tank could not be loaded a boiler is used as the heat source. A switchover valve is used to switch the heat source from the buffer tank to the boiler. The controller controls a mixing loop for radiators, convectors or low temperature heating circuits. A constant temperature control is also possible. Domestic hot water control and the control of the circulation pump are also handled by the controller.

  • Note: System no 407 means that certain parameters must be set for this application to function.

Mixed heating1 circuit
Domestic Hot Water2 pumps
Buffercharge pump, switchover valve, discharge

Functions

  • The basic functions are contained in an indestructible program.
  • All the parameters are predefined with sensible basic settings and allow individual adjustments as necessary. PCs are not required for this.
  • All the relay outputs can be tested manually.

Heating circuit

  • Time switch for daily, weekly and holiday programs for each heating circuit
  • Optimisation of switch-on times
  • Caretaker function, frost protection function
  • Outdoor temperature-compensated mixed circuit/direct heating circuit, as required with room tie-in
  • Cooling function - switchover based on outside temperature

Hot water control

  • Time switch with daily and weekly program
  • Anti-legionella automatic system
  • Hot water priority circuit or parallel operation with heating supply
  • Circulation pump control with different control strategies

Buffer control

  • A differential temperature control will switch on the Pump on VA2 if the temperature on VE2 is higher than on KSPF

Switch over valve

  • If the heat demand can not be covered from the buffer tank, the switch over valve on VA1 will be opened and in the direction of the boiler circuit

Boiler control

  • The boiler will only be used if the buffer tank cannot supply the required temperature.
  • There can be used single or two stage boilers. Modulation boilers can be used via Opentherm interface

Combination

  • Combination option of up to five freely-selectable SMILE controllers

Communication

  • Communication takes place over the system bus without additional interfaces
  • Distance (max. 100 m)
  • All the data required for the control system is communicated
  • Remote operation with the wall modules SDW.. also takes place using the system bus

Fault message

  • If the required temperatures cannot be achieved within a reasonable time, or sensors interrupt or short-out, then the controller will generate a fault message.

Related Parts

Product Type Description
Application for Smile digital controller
_Hy0407
_Hy0407
Microprocessor controller for heating circuit, boiler and hot water control
SDC9-21WM
SDC9-21WM
With connection base for wall installation
SDC9-21PM
SDC9-21PM
With connectable terminal strips for control panel installation
Sensors
AF20-B65
AF20-B65
Outside air temperature sensor
SF20-B54
SF20-B54
Contact temperature sensor VF
KTF20-65-2M
KTF20-65-2M
Heat generator sensor VE2
Recommended
SDW10WE
SDW10WE
Remote control with temperature selector/sensor and mode switch
Selectable
VF20-3B54NW
VF20-3B54NW
Hot water sensor with optional NIRO immersion well (instead of KTF20-65-2M)
VF20-1B54NW
VF20-1B54NW
Immersion temperature sensor (instead of SF20-B54)
SDW30
SDW30
Easy-to-use remote operation with display and complete programming unit along with temperature sensor/selector (instead of SDW10)
SCS-12
SCS-12
Base for Smile Controller, for control panel installation as touch protection
SWS-12
SWS-12
Connecting base for wall installation of SMILE panel models
SRR
SRR
Reducing attachment frame for control panel installation, assuming available control panel cut-out on controllers ZG52 /53 /55 / 82 /85 or ZG215 /215V /252 /254