KWB Easyfire - Basic Module with Weather-Sensitive Control System and Boiler Master-And-Slave System

© KWB – Kraft und Wärme aus Biomasse GmbH IM Easyfire 10/2008 Page 177
18.2 Hydraulic diagrams
18.2 Hydraulic diagrams
Basic module with weather-sensitive control system
and boiler master-and-slave system
MBEH0009_a sheet 2/2
System description:
The system consists of boiler circuit and distributor and is de-coupled by a switch. The return flow boost is
executed via a thermal valve on at least 50 °C. The basic module for boiler / DHWC & buffer control is equipped with
a weather-sensitive control system for 2 heating circuits (option). One heating circuit is equipped with an analogue
room control unit (option), the second heating circuit is equipped with a digital room control unit (option) for remote
control. If the lower boiler temperature value of the control hystereses on the master boiler is underranged by the
“temperature differential” (5 C, adjustable), then after a “switch-on delay” (30 min., adjustable) a slave boiler will
be requested via the power output. The request comes even if the master boiler has been switched off via the
software. If the boiler temperature of the master boiler increases above the described value after the “switch-off”
delay (30 min., adjustable) the request will be cancelled.
Menu basic settings
Parameters Settings
Return ow boost Thermal valve
Outputs Switching on 30 min
Switch-o 30 min
Temp. dierential 5 °C
Network settings Boiler External 2 Heat to target 2
Power output Boiler master-and-slave
circuit
Boiler dependence No
Heating circuit/
heating circuit 0 Room sensor Boiler/0
Outdoor sensor Boiler
Function No
Group no. 0
Heating circuit/
heating circuit 1 Room sensor Boiler/1
Outdoor sensor Boiler
Function Yes
Group no. 0
Heating circuit/
heating circuit 2 Room sensor DRCU1
Outdoor sensor Boiler
Function Yes
Group no. 0
DHWC/DHWC0 Function Yes or before
Group no. 0
Buer/Buer0 Function No
Digital remote control/ Outdoor sensor Boiler
Digital remote control 1 Heating circuit 1 – 2
DHWC 0 – 0
Buer - - -
Hardware Heating circuit modules 0
Digital remote control 1
Plug-in modules O
Comment: None
Subject to change!
Tech. data sheet HYD-USP-MBEH0009_a, sheet2/2, date: 14-07-06 StHo
MA-Easyfire 10.2008_EN.indd 177MA-Easyfire 10.2008_EN.indd 177 30.03.2009 13:32:17 Uhr30.03.2009 13:32:17 Uhr