Muonio MFH 230 User manual

MFH 230
System Control Module
WIRING INSTRUCTIONS

Introduction
This manual describes how to understand, install and wire
the MFH 230 Control Module. MFH 230 is pre-congured
to automatically re the boiler(s) only when one or more
time/temperature zone controls call for heat, eliminating
the need for a separate boiler clock and so prevents
boiler dry-cycling.
IMPORTANT:
ONLY use 0.5 mm2to 1.5 mm2 wiring cable when connecting to the MFH 230 unit.
Wiring external to the printed circuit board MUST be in accordance with
current statutory wiring regulations and any local regulations that apply.
The power supply must be 230 V~, 50/60 Hz, Single Phase. Attaching the
MFH 230 board to more than one phase will cause irreparable damage.
To ensure single phase, we recommend that power be introduced only
at the mains input terminals (7, 8) and that all other mains inputs be
derived from suitable outputs on the board itself.
Devices attached to MFH 230 MUST be properly earthed in accordance
with manufacturer’s specications. The method of connection to the
mains electricity supply MUST facilitate complete electrical isolation of
the entire installation.
A fused double pole switch, with at least 3 mm (1/8”) contact separation
in both poles, serving only the MFH 230 panel should be used. The point
of connection to the mains should be readily accessible and, if possible,
adjacent to the MFH 230 unit.
WARNING & INFORMATION SYMBOLS
The addition of this symbol to a “Danger” or “Warning” safety label
indicates that an electrical hazard exists which will result in personal
injury if the instructions are not followed. Obey all safety messages that
follow this symbol to avoid possible injury or death.
The Information symbol is used to address practices not related to
physical injury and to indicate where useful facts will assist in installing
or using the device correctly.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
IMPORTANT! Disregard will lead to permanent equipment damage!
INFORMATION! indicates an explanation containing information that is
useful to know, a supplementary operating procedure, or other data.
IMPORTANT INFORMATION

This product must be tted by a competent person, and installation
must comply with the guidance, standards and regulations applicable
to the country or state where the product is installed. Failure to
comply with the requirements of the relevant guidance, standards and
regulations could lead to injury, death or prosecution.
Always isolate the AC mains supply before installing or working on any
components that require 230 V~, 50 Hz supply.
TECHNICAL INFORMATION
TERMINALS 0.5 mm2to 1.5 mm2
DIMENSIONS 92 x 350 x 57 mm
MOUNTABLE DIN rail or screws
WEIGHT 700 g
MODEL 10 ZONES 6 ZONES PUMP CONTROL BOILER CONTROL POWER SUPPLY
230 V 230 ~ VAC
24 V 24 ~ VAC or 24 VDC
230/24 V 24 ~ VAC or 24 VDC
or 230 ~ VAC
MODEL MAX POWER LED INDICATION PUMP CONTROL BOILER CONTROL
230 V 200 watts (relay on) NO NC/NO
24 V 70 watts (relay on) NO NC/NO
230/24 V 200 watts 

Terminal Identication & Description
POWER SUPPLIES
L - live
N – Neutral
For 230 VAC version one L and N use for power supply, other you can take for pump control.
In case of pump control you can bring one ground line and one use for pump connection.
Max power for pump is 150 watts.
In case of 24 VAC power supply you can’t use this terminal to drive pump due to low
voltage but you can still use relay to switch contact.
Same contacts you may use for 24 VDC power supply.
USING INCORRECT FUSE SIZES WILL INVALIDATE THE WARRANTY
230 VAC version and 24 V version can’t be switched from one version to other.
Before conducting any wiring always check label for proper voltage.
Failure to follow this advice may result in injury and/or product damage.
WIRING
Use 0.8 mm2 wires. We recommend to use terminals. Enclosure is designed so it can rmly
connect wires between plastic strips. If cables are not rm enough (wire width can vary)
use ties to additionally block slipping.
POSITIONING THE ENCLOSURE
Use screws or DIN rail. For DIN RAIL option mount two plastic parts on back of enclosure.
RELAY EXPLANATION
If device is supplied with relay, any of zones will trigger relay.
In this case relay will turn on and in the same time led will turn on.
We have two contacts:
Pump control is normally open .
Symbol for pump on board is . Max power here is 150 watts.
Other contact can be normally open or closed .
Don’t use this contact to drive anything bigger than 300 watts power.
This is volt free contact and can be used for example to turn on boiler via volt free contact.
Do not drive electrical heaters on this contact.
If you drive boiler or any other low voltage device do not lead cables with high voltage
cables as induction may occur (and thus false triggering of boiler).

General Zone & Boiler Control
Terminal Identication and Function
DO NOT DRIVE ELECTRICAL HEATERS ON RELAY CONTACT.
THERE IS NOT ENOUGH POWER SUPPLIED.
Fuse sizes:
Fuse is marked with
ZONE EXPLANATION
L,N – power supply to thermostat. Depend on model can be 24 VAC or 24 VDC or 230
VAC. If power used is DC then L is +, N is -.
is return from thermostat. If this trace is Live (or +) it will trigger valve and valve and in
the same time it will trigger relay ON.
is clock information to thermostat. Device can externally have two clocks and these
are marked with 1 and 2.
is change over information to thermostat.
are connections for valve. If needed mind the polarity.
Other contacts:
Can be used as condensation sense. This contact should be closed (NC) in order for device
to work. If open it will not trigger valve and relay.
Clock connections. Device can use two external clocks and this can be wired to
thermostats if thermostat support this function.
Change over for change between heating and cooling. Can be wired to thermostats if
thermostat support this function.
Ground connection
If device is 230V version and if relay contact is used to drive pump this contact can be
wired for ground connection (one in and one out).
Relay on
In case that any of ZONE`S thermostat bring valve to open, it will trigger relay and there is
LED signal so it can be seen if relay is triggered.

MFH 230 installation / wiring diagram sketch pad
DISPOSAL OF OLD DEVICES
Devices marked with this symbol are subject to European Directive 2002/96/EC. All electric and electronic devices must be disposed of
separately from household waste at ofcial disposal centres. Avoid hazards to the environment and dangers to your personal health by
disposing of the device properly. For further information about proper disposal, contact your local council, waste disposal ofce or the
shop where you bought the device.
WARRANTY & SERVICE
You receive a 12 months warranty for this appliance as of the purchase date. This appliance has been manufactured with care and
meticulously examined before delivery. Please retain your receipt as proof of purchase. In the case of a warranty claim, please contact with
the dealer or our service department. Only in this way can a post-free dispatch for your goods be assured. The warranty covers only claims
for material and manufacturing defects, but not for transport damage, wearing parts or for damage to fragile components, e.g. buttons or
batteries. The warranty is void in the case of abusive and improper handling, use of force and internal modications not carried out by our
authorized Service Centre. Your statutory rights are not restricted in any way by this warranty. The warranty period is not extended through
repairs made under warranty. This applies also for replaced or repaired parts. Any damages or deciencies found on purchase must be
reported as soon as possible after unpacking, at the latest two days after purchase. On expiry of the warranty, all repairs or replacements
carried out are subject to payment.
Please retain your receipt as proof of purchase. In the case of a warranty claim, please contact our service department by email or
telephone.
The warranty covers only manufacturing defect in material and workmanship that may arise despite normal operation and usage of the
MFH 230 as prescribed in the operating manual.
The customer shall provide a reasonable, sufcient and safe working space to access the appliances for service.
The company’s obligation under this warranty shall be limited to repair and providing replacement of defective parts only. It is hereby claried that
after the Standard Warranty Period, call-out charges will be applicable for all call-outs and the cost will be borne by the customer.