Asm10 Connection Module; Mm10 Mixer Module; Sm10 Solar Module; Vm10 Control Module For External - Buderus Logamax plus GB162 Technical Manual

4.5.2

ASM10 connection module

For an EMS-BUS with several subscribers, e.g. MM10
mixer module or RC25 programming unit, the ASM10
connection module is an extension to which six BUS
subscribers can be connected. It is used in the Logamatic
EMS control system and is installed either in the gas
condensing boiler or in the control system; alternatively it
can be wall mounted.
The module also features the following:
• 1 EMS-BUS input and 5 EMS-BUS outputs
• Encoded and colour-coded connection plugs
• Internal communication via EMS databus
• Wall mounting enclosure into which the EMS system
module is clipped
• Strain relief for all connecting cables
• Terminal cover
• Module IP rating inside the wall mounting enclosure:
IP 40
• Including installation materials
• Number of modules per system subject to demand
4.5.3

MM10 mixer module

The MM10 mixer module extends the Logamatic EMS
control system by heating circuits with mixer. Up to three
modules can be used with the RC35 programming unit. It
can only be used if the gas condensing boiler is
hydraulically separated by means of a low loss header in
connection with the WM10 low loss header module plus
one heating circuit distributor for two heating circuits
(system examples page 70 f.). For heating circuits 2, 3
and 4, the heating systems "Radiator", "Convector" or
"Underfloor" can be selected at the service level of the
RC35 programming unit. These circuits can be operated
in weather-compensated or in room
temperature-dependent mode. The "Screed drying"
function can also be regulated if "Underfloor" has been
selected for the heating circuits. In addition, these heating
circuits can be operated purely under room control.
A programming unit is required in the reference room if a
heating circuit is regulated in room
temperature-dependent mode (
may be directly connected to the MM10 mixer module. In
this case, the RC35 or RC25 programming unit acts as a
remote control.
4.5.4

SM10 solar module

The SM10 solar module enables the integration of solar
DHW heating into the Logamatic EMS control system
(system example page 73).
The SM10 solar module not only offers a temperature
differential control, it also includes a function that enables
the control of the solar circuit pump to deliver a variable
flow rate. This High-Flow/Low-Flow operation enables
demand-optimised DHW heating. When the system is still
cold, the system initially produces DHW quickly from the
solar yield for "optimum convenience." When sufficient
6 720 645 821 (2010/09) – Logamax plus GB162
fig. 19, page 32). It
hot water is available, the system switches over to "yield
optimisation".
In addition, the SM10 solar module includes a function to
optimise reheating. This clearly highlights the intelligent
linking of gas condensing boiler and solar control unit.
This control function suppresses reheating by the gas
condensing boiler, subject to the heat input capacity of
the DHW cylinder if the solar yield is adequate. This
allows an optimisation of the solar yield and up to 10 %
primary energy can be saved.
To enable solar DHW heating, select the heating circuit
"Solar thermal system" at the service level of the RC35
programming unit.
The thermal disinfection function is automatically disabled
at the RC35 programming unit when utilising dual mode
DHW or thermosiphon cylinders.
4.5.5 VM10 control module for external solenoid
valve
Fig. 31 VM10 control module
When combined with the Logamax plus GB162 gas
condensing boiler, the VM10 control module regulates
the switching and the power supply of an external
solenoid valve for the operation of subterranean
appliances with LPG.
When the boiler receive a heat demand, the external
solenoid valve is opened two seconds ahead of the gas
valve of the gas condensing boiler.
The external solenoid valve remains closed when there is
no heat demand for the gas condensing boiler. The
external solenoid valve remains closed if the appliance
has developed a fault.
Heating control 4
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