Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
13 Project planning
83309302 1/2018-05 La
166-196
13.2 Weishaupt Energy Management WEM
System device
The display and operating unit (system unit) integrated in the condensing unit is the
higher-level system unit (master) for the entire system. The system device can ad-
dress all expansion modules connected to the system.
At the same time, the system device controls the direct heating and hot water cir-
cuit of the condensing unit. Only heating or DHW circuits that are supplied via a
pump controlled by the condensing unit are classed as direct circuits. Address 1 is
designated to the direct heating and DHW circuit in the system.
Extension module
The heating system extension module (WEM-EM-HK) can be used to control an
additional pump heating circuit or a mixer circuit. Up to 24 heating system exten-
sion modules can be connected to the system.
Room device WEM-RG1
A room device can be connected to the condensing unit and to each heating sys-
tem extension module. One room device WEM-RG1 can operate one heating cir-
cuit.
Room device WEM-RG2
A room device can be connected to the condensing unit and to each heating sys-
tem extension module. One room device WEM-RG2 can operate up to 3 heating
circuits and one DHW circuit.
Room sensor WEM-RF
A room sensor can be connected to the condensing unit and to each heating sys-
tem extension module.
Room sensor WEM-RF can only be assigned to one heating circuit. Up to 3 room
sensors can be assigned to one heating circuit. The system device then calculates
the average value for the control from the room temperatures.
