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© MHG Heating Ltd
Installation and Operating Manual for the
ProCon 16, 27, 47, 75 & 77
Wall Mounted Condensing Boiler Range.
(RVS 43 Cascade Models)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
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© MHG Heating Ltd
Installation Regulations and Requirements
Appliance Warranties. Supplied Components.
Dimensions Kompact (For Information only)
Installation Clearances and Mounting Information 16, 27 & 47
Installation Clearances and Mounting Information 75
Installation Clearances and Mounting Information 77
Hydraulic and Wiring Guide Single Unit Option 1 (Heating Only) (Low Resistance Circuit)
Hydraulic and Wiring Guide Single Unit Option 2 (Heating & HWS) (External 3 Way Valve)
Hydraulic and Wiring Guide Single Unit Option 3 (Heating & HWS) (HS)
Hydraulic and Wiring Guide Single Unit Option 4 (Heating Only) (High Resistance Circuit)
Hydraulic and Wiring Guide Single Unit Option 5 (Heating & HWS) (High Resistance Circuit)
Hydraulic and Wiring Guide Single Unit Option 6 (Heating & HWS) (Two Heating Circuits)(HS)
Hydraulic and Wiring Guide Single Unit Option 7(Heating & HWS) (Two Heating Circuits)
Hydraulic and Wiring Guide Single Unit Option 8 (Heating & HWS) (Two Heating Circuits)(Mixing)(HS)
Hydraulic and Wiring Guide Single Unit Option 9 (Heating & HWS) (Two Heating Circuits)(Mixing)
Hydraulic and Wiring Guide Single Unit Option 10 (Heating & HWS) (Two Heating Circuits)(RVA63)
RVA63 Zone Controller Wiring Information
Hydraulic and Wiring Guide Multiple Units Option 11 (Heating & HWS) (RVS43 Cascade Manager )
RVS43 Cascade Manager Wiring Information (Controller Only)
RVS63 Cascade Manager Housing Wiring Information (Including Space For RVA46 Zone Controller)
Hydraulic and Wiring Guide Multiple Units Option 12 (Heating & HWS) (RVS43 Cascade Manager+RVA63)
BMS Interface Installation and Parameter Alteration & AGU Mixing Zone Clip Installation and Parameter Alteration
MicroMat EC 60-75 Flue Adapter for use with ProCon 77
Single Unit Balanced Flue Wall Termination
Single Unit Balanced Flue Vertical Termination
Single Unit Balanced Flue with Concentric to Twin DN80 Products of Combustion and Combustion Air Ducts.
Single Unit open Flue Wall Termination
Single Unit Open Flue Vertical Termination
Cascaded Open Flue Vertical Termination
Dimensions of Available Flue Components
Balanced Flue Terminal Positions For Boilers below and Above 70kW Net Input
Care With The Use Of Solder Flux
Enhanced Appliance Fault Codes
Accessing Boiler Parameters (Control Parameter Default Settings)
RVS43 Cascade Manager General Information
RVS43 Cascade Manager Parameter Setting
Pre-Commissioning Checks.
Combustion System Commissioning
NG/LPG – LPG/NG Conversion Procedure
Routine Inspection and Servicing
Routine Service Inspection
Routine Cleaning and Maintenance
Weather Compensation Slope Graph
Internal Wiring Diagrams 16, 27 & 47 H , HS & S
Internal Wiring Diagrams 47 H & S
Internal Wiring Diagrams 75 & 77 H
Internal Wiring Diagrams 75 & 77 HM
HM and Cascade Slave Units Equipped with OCI420 Communication Clips (LED Indication)
Exploded Spares Diagrams 16, 27 & 47
Exploded Spares Diagrams 75
Exploded Spares Diagrams 77
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
1.0 Appliance TypeThere are four build types and four outputs within the ProCon range.
Please ensure you have the correct unit for the application and where required located correctly
within the cascade prior to beginning the installation.
ProCon 16H & 16HS, ProCon 27H, 27S & 27HS, ProCon 47H & 47S, ProCon 75&77H & 75&77HM
1.1 The ProCon H range of appliances is designed to be applied to systems requiring direct on
boiler weather compensated heating and priority hot water production via a separate high
recovery calorifier/cylinder.
1.2 The ProCon S range of appliances is designed to be applied to systems requiring direct on
boiler weather compensated heating and priority on demand hot water production via an internal
late heat exchanger.
1.3 The ProCon HS range of appliances are designed to be applied to systems requiring direct on
boiler weather compensated heating and priority hot water production via a separate high
recovery Calorifier/Cylinder, where the diverter valve controlling the production of hot water is
within the boiler case.
1.4 The ProCon HS+ can be supplied complete with an integrated high recovery calorifier for
simplified and attractive installation housed within and extended case. The high recovery calorifer
can be located beneath of adjacent to the boilers. (Further information available via the website
www.mhgheating.co.uk)
1.5 The ProCon HM appliance is supplied complete with and integral RVS43 Cascade Manager
capable of controlling an additional 11 ProCon boilers. Each subsequent boiler must be fitted with
an OCI420 Communication Clip.
The product codes for the entire range are:
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
2.0 Installation Regulations and Requirements
The installation of ProCon HT boilers must be in accordance with the relevant requirements of Gas
Safety (Installation & Use) Regulations 1994, Health & Safety at Work Act, Building Regulations, IEE
Regulations, Construction (Design & Management) Regulations 1994, Local Authority Bye-Laws,
National, Fire Regulations and Insurance Company requirements.
The following Codes of Practice are also applicable:-
BS 5440-1: 2000 Installation of flues and ventilation for gas appliances of rated input not
exceeding 70 kW net (1st, 2nd and 3rd family gases).
Part 1: Specification for the installation of flues.
BS 5440-2: 2000 Installation of flues and ventilation for gas appliances of rated input not
exceeding 70 kW net (1st, 2nd and 3rd family gases).
Part 2: Specification for installation and maintenance of ventilation for gas appliances.
BS 5449: 1990 Specification for forced circulation hot water central heating systems for domestic
premises.
BS 6644: 2005 Specification for gas fired hot water boilers of rated inputs between 70kW (net)
and 1.8MW(net) (2nd and 3rd family gases).
BS 6798: 1987 Specification for installation of gas fired hot water boilers of rated input not
exceeding 60 kW.
BS 6880: 1988 Code of Practice for low temperature hot water heating systems of output greater
than 45kW. Parts 1, 2 & 3.
BS 6891: 1988 Specification for installation of low pressure gas pipework of up to 28mm (R1) in
domestic premises (2nd family gases)
BS 7593: 1992 Code of Practice for treatment of water in domestic hot water central heating
systems.
BS 7671: 1992 Requirements for electrical installations. IEE Wiring Regulations. Sixteenth edition.
CISBE Guide reference sections B7, B11 and B13.
CP342 Part 2: 1974 Code of Practice for centralized hot water supply.
GE/UP/2 Gas installation pipework, boosters and compressors on industrial and commercial
premises.
IGE/UP/4 Commissioning of gas fired plant on industrial and commercial premises
IGE/UP/10 Installation of gas appliances in industrial and commercial premises. Part 1: Flued
appliances.
And any addition prevailing regulation and or code of practice not detailed above.
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
2.1 Appliance Warranties
All MHG appliances enjoy a full 24 month warranty as detailed in our terms and conditions.
The guarantee period shall begin on the day of commissioning, or at latest 3 months after delivery
has been made.
The customer shall only be able to claim against MHG under guarantee if the commissioning of
the object of delivery has been carried out by MHG staff or the authorised supplier, if the customer
has followed MHG's instructions relating to the treatment and maintenance of the object of
delivery, and if no replacement parts of outside origin have been fitted.
Parts subject to wear such as ignition electrodes, seals etc. are strictly excluded from the
guarantee.”
In addition to the above warranties, the Primary Heat Exchangers carry a 60 month guarantee
against manufacturing or material defect.
Supplied Components
All ProCons are supplied with the following components.
QAC 34 Outside Air Sensor. (To activate direct on boiler weather compensation.)
Wall Mounting bracket and fixing kit.
Condensate outlet adapter. (To convert ¾” BPS to 22mm plastic waste.)
Bleed key & heat exchanger venting hose.
Condensate syphon flushing hose. (To be attached to the heat exchanger and flue waste pipes and
flushed with clean water.)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Hot Water Primary Return 22mm (HS Models)
Cold Water Inlet 22mm (S Models)
Heating Flow 22mm (All Models)
Heating Return 22mm (All Models)
Hot Water Primary Flow 22mm (HS Models)
Hot Water Outlet 22mm (S Models)
Condensate Outlet ¾” BSP Plastic
Condensate Cleanout Connection ¾” Cap
3.0 Dimensions. 16 – 47 Boilers
© MHG Heating Ltd
Legend
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Condensate Cleanout Connection ¾” Cap
Condensate Outlet ¾” BSP Plastic
3.1 Dimensions. 75 Boiler
© MHG Heating Ltd
Legend
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Heating Return Connection 1 ¼”
Condensate Cleanout Connection ¾” Cap
Heating Flow Connection Option 1 ¼”
Condensate Outlet ¾” BSP Plastic
3.2 Dimensions. 77 Boiler
© MHG Heating Ltd
Legend
**Please note that the flexible flow connection can be rerouted to the top of the boiler if
required.**
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Hot water Primary Flow 1”
Hot Water Primary Return 1”
Hot Water Secondary Outlet ¾”
Hot Water Secondary Return ½”
Cold Water Secondary Inlet ¾”
Hot Water Primary Return ¾”
Hot water Primary Flow ¾”
Hot Water Secondary Outlet ¾”
Cold Water Secondary Inlet ¾”
Hot Water Secondary Return ½”
3.3 Dimensions HS + Calorifier Below (Additional information available from the website www.mhgheating.co.uk)
Legend
3.3 Dimensions HS + Calorifier Adjacent (Additional information available from the website
www.mhgheating.co.uk)
Legend
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
3.4 Installation and Service Clearances 16-47 Boilers
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
3.4 Mounting Information 16 – 47 Boilers
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
3.5 Installation and Service Clearances 75 Boiler
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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3.5 Mounting Clearances 75 Boiler
© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
3.6 Installation and Service Clearances 77 Boiler
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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3.6 Mounting Clearances 77 Boiler
© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
4.0 Delivery and Mobility
All ProCons are supplied fully tested and therefore may contain residual test water.
The test water utilised contains additives that will help prevent the pump from sticking and other
metals from oxidising.
To maintain the structural integrity of the appliance the internal components should not be used
during the lifting and positioning of the unit onto the wall bracket.
All packaging materials should be disposed of in an environmentally way.
4.1 Case Removal
To remove the case insert a flat blade screwdriver or similar into the black latch slots and turn
through 900 .
Pull the base of the cover forward and up to release the hooks at the top. Ensure that the earth
cable is removed prior to lifting the cover clear.
The lower case housing the display panel can be hinged down to all greater access to all internal
components.
The lower case is secured on either side by thumb nuts located on the return edge on the side
case.
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Carbon Emissions
100% Of max Output
Carbon Emissions
30% Of max Output
Operating Efficiency (40ºC/30ºC)
Nominal Heat Output (50ºC/30ºC)
Design Flow Rate (50ºC/30ºC)
Nominal Heat Output (80ºC/60ºC)
Design Flow Rate (80ºC/60ºC)
Hot Water Generation Output
Hot water flow rate @ DT 30)C
Min Flow Rate For H/W
Activation
Maximum Secondary Water
Pressure
Residual Head from In-built
Pump
Power Supply (230 V / 50 Hz)
Concentrically Configured
(Straight or Elbow Adapter
Required.)
5.0 Technical Data
© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Low Voltage Control terminals < 25 Volts
QAA73 Room Unit Not Polarity Sensitive < 24Volts
(Link terminals to activate second heating zone control.)
Heating Circuit 1 Volt Free Enable Not Polarity Sensitive (Room stat/BMS) < 24 Volts
Outside Air Sensor (QAC34) Not Polarity Sensitive < 24Volts
(Required to Activate Direct on Boiler Weather Compensation)
Hot Water Sensor (QAZ36) or Hot Water Volt Free Enable (Thermostat/BMS).
Not Polarity Sensitive < 24Volts
High Voltage Output and Input Terminals 230 Volts
Permanent 230 Volt Output for Motor Open Motor Close Hot Water Diverter Valve
Neutral Terminal for Hot Water Diverter Valve or Charging Pump
230 Volt Output For Hot Water Diverter Valve or Charging Pump (Max 1Amp)
230 Volt Output For Heating Circuit Pump (ProCon 16-27)/Boiler Pump ProCon 47, 75&77) (Max 1Amp)
Neutral Terminal for heating/Boiler Pump
Neutral Terminal for heating/Boiler Pump
230 Volt Output For Boiler Pump (ProCon 16-27)/Heating Circuit Pump ProCon 47,75&77) (Max 1Amp)
Switched Fused Permanent Neutral
Switched Fused Permanent 230 Volt Live (Max 5Amp)
6.0 Pressure (Safety) Relief Valve
In accordance with the prevailing British Standard 5440/6644, the installer shall install as suitably
sized Pressure (Safety) Relief Valve.
The location of this valve is important with respect to the applied pressure of the boiler circulation
pump, it is therefore recommended to locate the Pressure (Safety) Relief Valve on the flow pipe
immediately adjacent to the boiler; furthermore, there must not be any means of isolation
between the boiler and the Pressure (Safety) Relief Valve.
7.0 Electrical Connections
Basic electrical connection for all types of ProCon
Legend
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
High Voltage Output Terminals 230 Volts
Neutral Terminal for Hot Water Charging Pump
Earth Terminal for Hot Water Charging Pump
230 Volt Output For Hot Water Charging Pump (Max 1Amp)
Neutral Terminal for Heating Circuit Pump
Earth Terminal for heating Circuit Pump
230 Volt Output For Heating Circuit Pump (Max 1Amp)
Low Voltage Control terminals < 25 Volts
Controller Operating Input (Volt free Enable/0-10 Volt Control/Mode Alteration)
System Return Sensor (QAD 36) Terminal Not Polarity Sensitive < 25 Volts
System Flow Sensor (QAD 36) Terminal Not Polarity Sensitive < 25 Volts
Hot Water Sensor (QAZ36) or Hot Water Volt Free Enable (Thermostat/BMS).
Not Polarity Sensitive < 24Volts
Outside Air Sensor (QAC34) or (3000Ω Substitute Resistor = -10C) Not Polarity Sensitive < 24Volts
(Required to Activate Direct On Boiler Weather Compensation)
Cascade Controller Output to Slave Boilers. Polarity Sensitive (Screened Cable Required)
(X41 Terminal 2 (Right) OCI420 Communication Clip)
Cascade Controller Output to Slave Boilers. Polarity Sensitive (Screened Cable Required)
(X41 Terminal 1 (Left) OCI420 Communication Clip)
Wired to the either AT terminals.
Enhanced electrical connection for ProCon HM (Units supplied with an integral Cascade manager)
Legend
Please note that two outside air sensors are available. Please ensure that the units are wired as
follows.
In either case the outside air temperature will be communicated to all controllers.
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
8.0 Hydraulic Design Single Unit (Option 1)
Electrical Connections Single Unit (Option 1)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
8.1 Hydraulic Design Single Unit (Option 2)
Electrical Connections Single Unit (Option 2)
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
8.2 Hydraulic Design Single Unit (Option 3),
Electrical Connections Single Unit (Option 2)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
8.3 Hydraulic Design Single Unit (Option 4)
Electrical Connections Single Unit (Option 4)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
8.4 Hydraulic Design Single Unit (Option 5)
Electrical Connections Single Unit (Option 5)
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation (0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
Second Heating Circuit Installed without 3 Way Valve and Sensor
Mixed Flow Sensor Present (1) / No Mixed Flow sensor Present (0)
(E26 Error signal when sensor is not used.)
Second Heating Circuit Installed with 3 Way Valve and Sensor
8.5 Hydraulic Design Single Unit (Option 6)
Electrical Connections Single Unit (Option 6)
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
Second Heating Circuit Installed without 3 Way Valve and
Sensor
Mixed Flow Sensor Present (1) / No Mixed Flow sensor Present (0)
(E26 Error signal when sensor is not used.)
Second Heating Circuit Installed with 3 Way Valve and Sensor
8.6 Hydraulic Design Single Unit (Option 7)
Electrical Connections Single Unit (Option 7)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
Second Heating Circuit Installed without 3 Way Valve and
Sensor
Mixed Flow Sensor Present (1) / No Mixed Flow sensor Present (0)
(E26 Error signal when sensor is not used.)
Second Heating Circuit Installed with 3 Way Valve and Sensor
8.7 Hydraulic Design Single Unit (Option 8)
Electrical Connections Single Unit (Option 8)
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© MHG Heating Ltd
Weather Compensation (1) / Constant Flow Temperature Operation
(0)
(E10 Error signal when outside air sensor is not installed.)
Hot Water Storage Sensor (0) / Hot Water Thermostat (1)
(E50 Error signal when sensor is not used.)
Second Heating Circuit Installed without 3 Way Valve and
Sensor
Mixed Flow Sensor Present (1) / No Mixed Flow sensor Present (0)
(E26 Error signal when sensor is not used.)
Second Heating Circuit Installed with 3 Way Valve and Sensor
8.8 Hydraulic Design Single Unit (Option 9)
Electrical Connections Single Unit (Option 9)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Summer / Winter Automatic Changeover Temperature
Summer / Winter Automatic Changeover Temperature
Boiler Control Type LPB/On-Off/Hi-Low
LPB Controller / Appliance Communication (Device)
LPB Controller / Appliance Communication (Segment)
8.9 Hydraulic Design Single Unit (Option 10)
Electrical Connections Single Unit (Option 10)
Boiler Parameter Alterations
RVA63 Controller Alterations
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Description/Operation/Function
Description/Operation/Function
Zone 2 QAA70/50/10 Room Unit
(PPS Ground)
Zone 2 Mixing Valve Closing Output (Max 2 Amp)
Zone 2 QAA70/50/10 Room Unit
(PPS Data)
Zone 2 Mixing Valve Opening Output (Max 2 Amp)
Zone 2 Flow Sensor (QAD21/26)
(To be positioned on Zone side of 3 way mixing
valve)
Power Input for Zone 2 Valve Outputs
(To be linked to Live Input)
Ground Connection for all Sensors/Inputs
Zone 2 Pump Output (Max 2 Amp)
Flue Gas Sensor (Not Used)
Zone 1 Pump Output (Max 2 Amp)
Volt Free Enable via Room Thermostat/BMS
Power Input for Zone Pumps Output
(To be linked to Live Input)
Zone 1 Flow Sensor (QAD21/26)
(To be positioned on Zone side of 3 way mixing
valve)
Zone 1 Mixing Valve Closing Output (Max 2 Amp)
0-10 Volt Input via BMS/Volt Free Enable via
Room Thermostat/BMS
Zone 1 Mixing Valve Opening Output (Max 2 Amp)
Power Input for Zone 1 Valve Outputs
(To be linked to Live Input)
Hot Water Sensor (QAZ21)/Volt Free Enable via
Calorifier Thermostat/BMS
(Parameter alteration required if Volt Free Enable
Used)
Hot Water Charging Pump/3 Way Valve Output (Max 2
Amp)
Outside Air Sensor (QAC31/32) or
(620Ω Substitute Resistor = -10C)
(Mounted on North Facing Wall)
Power Input for Hot Water Pump/Valve Output
(To be linked to Live Input)
Zone 1 QAA70/50/10 Room Unit
(PPS Ground)
Burner Enable Output Stage 2 (Not Used)
Zone 1 QAA70/50/10 Room Unit
(PPS Data)
Power Input Burner Enable Stage 2 (Not Used)
Boiler Communication
(LPB Ground connected in parallel to boiler
mounted OCI420 Clip or RVS43 Manager)
Burner Enable Stage 1 (Not Used)
Boiler Communication
(LPB Data connected in parallel to boiler mounted
OCI420 Clip or RVS43 Manager)
Power Input Burner Enable Stage 1 (Not Used)
Permanent Live (Max 6 Amp)
8.10 RVA63 Zone Controller Wiring Terminals
Terminal Designation (Low Voltage Terminals) Terminal Designation (230 Volt Terminals)
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Summer / Winter Automatic Changeover Temperature
Appliance Hydraulic Configuration
LPB Communication Appliances Address (Maximum 12 Boilers)
Summer / Winter Automatic Changeover Temperature
8.11 Hydraulic Design Single Unit (Option 11)
v
Electrical Connections Single Unit (Option 11) Boiler Mounted Cascade
Manager
Boiler Parameter Alterations
RVS43 Manager Alterations
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Description/Operation/Function
0-10 Volt Input via BMS/Volt Free Enable via Room Thermostat/BMS
(M terminal used to create circuit)
System Return Sensor (QAD36)
(To be positioned on boiler side of system Low Loss Header)
Hot Water Sensor (QAZ36)/Volt Free Enable via Calorifier Thermostat/BMS
(Parameter alteration required if Volt Free Enable Used)
Ground Connection for all Sensors/Inputs
System Flow Sensor (QAD36)(
To be positioned on system side of system Low Loss Header)
Outside Air Sensor (QAC34) or (3000Ω Substitute Resistor = -1
0
C)(Mounted on North Facing Wall)
QAA55, QAA75/78 Room Unit (BSB Ground)
QAA55, QAA75/78 Room Unit (BSB Data)
Boiler Communication
(LPB Ground connected in parallel to boiler mounted OCI420 Clips)
Boiler Communication
(LPB Data connected in parallel to boiler mounted OCI420 Clips))
Hot Water Charging Pump/3 Way Valve Output (Max 2 Amp)
Heating Pump Output (Max 2 Amp)
Power Input for Heating and Hot Water Pump Outputs
(To be linked to Live Input)
Permanent Live (Max 6 Amp)
8.12 Integral RVS43 Cascade Manager
Terminal Designation
© MHG Heating Ltd
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RVS63 Cascade and Zone Manager Wiring Terminals.(Housing mounted).
Used in place of a HM boiler with integral RVS43 Cascade Manager.
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Screened Cable
(Earthed
Screening)
Description/Operation/Function
Multifunctional 4 Relay Output
Multifunctional 3 Relay Output
Multifunctional 2 Relay Output
Heating Circuit 2 Mixing Valve Output Y5 Open, Y6
Close
Heating Circuit 2 Pump Output
Multifunctional 1 Relay Output
Heating Circuit 1 Mixing Valve Output Y1 Open, Y2
Close
Heating Circuit 1 Pump Output
HWS Circuit Pump, Valve Output
External Safety Interlock Circuit
**Burner Outputs Not Used**
**Burner Outputs Not Used**
Screened Cable
(Earthed
Screening)
Description/Operation/Function
0-10 Volt Output **Not Used**
Multifunctional 4 Sensor Input
Multifunctional 3 Sensor Input
Volt Free Enable or 0-10 Volt Input Heating Zone 2
Heating Circuit 2 Flow Sensor QAD/Z36
Boiler Return Sensor QAD/Z36
#
System Flow Sensor QAD/Z36
#
Heating Circuit 1 Flow Sensor QAD/Z36
Volt Free Enable or 0-10 Volt Input Heating Zone 1
HWS Sensor QAZ36 or Volt Free Enable
Boiler Sensor **Not Used**
QAA75 Power Supply 12 Volts
Heating Circuit 1 QAA55/75
-Ground, + Data
Heating Circuit 2 QAA55/75
-Ground, + Data
Boiler Communication Connection (OCI420 Clips
mounted in Boilers Wiring in Parallel)
Connection for QAA78 Sender
Terminal Legend.
© MHG Heating Ltd
# Parameter alterations may be required to configure these terminals.
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Summer / Winter Automatic Changeover Temperature
Appliance Hydraulic Configuration
LPB Communication Appliances Address (Maximum 12 Boilers)
Summer / Winter Automatic Changeover Temperature
Summer / Winter Automatic Changeover Temperature
Boiler Control Type LPB/On-Off/Hi-Low
LPB Controller / Appliance Communication (Device)
1 For First RVA63, 2 For Second
RVA63, 3 For Third RVA63…etc
LPB Controller / Appliance Communication (Segment)
8.14 Hydraulic Design Single Unit (Option 12)
Electrical Connections Single Unit (Option 12) Boiler Mounted Cascade
Manager
Please refer to System Options 10 and 11 for RVS43 and RVA63 controller wiring information.
Boiler Parameter Alterations
RVS43 Manager Alterations
RVA63 Controller Alterations
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New Setting Programmable Inputs
Input control configuration
Input value interpretation affected by H622 or H623 Dependent upon control
requirement.
(4 is recommended.)
4. Predefined Temperature set point
5. Predefined Boiler Output
6. Low Loss Header Sensor
Maximum Temperature Via X51 input 0-10 Volt
When H618 is set to 4
Percentage level reached by input prior to boiler activation.
When H618 is set to 5
Relay designation for Output from Orange Plug
Left Terminal Live.
Right Terminal Neutral.
Output rated at 240 Volts 0.5 Amp
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
Relay designation for Output from Clear Plug
Left Terminal Live.
Middle Terminal Neutral.
Output rated at 240 Volts 0.5 Amp
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
Relay designation for Output from Clear Plug
Right Terminal Live.
Output rated at 240 Volts 0.5 Amp
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
9.0 BMS Interface Clip Installation and Parameter Alteration
Following the installation of the AGU2.511 communication clip (complete with base mounted
wiring connection) onto the front of the LMU64 controller a number of operational parameters
within the unit must be altered to ensure the clips operates as required.
LMU64 Pictured above with AGU2.511 and OCI420 communication clips.
A number of parameters will require altering within the LMU64 controller from their standard default setting to allow the
AGU2.511 communication clip to operate correctly.
Access is gained to the H parameters by pressing the PROG buttons simultaneously for 3 seconds unit H 90
appears on the screen. The required H parameters can then be reached by using the PROG or buttons.
Once at the required H parameter the required setting is achieved by using the buttons.
To save the alteration in the controller the INFO button must be pressed.
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Description/Operation/Function
Switched Output Power
Input
X52-01
Power Supply from X01-02 for switched live outputs.
Heating Zone 2 Pump Outputs
(Max 1 Amp)
Heating Zone 2 Mixing Valve Outputs
(Valve control is possible only when a zone flow QAD36 sensor is connected)
(Max 1 Amp)
1 & 2
(Not Polarity
Sensitive)
Heating Zone 2 Flow Sensor Inputs. (QAD36)
9.1 Mixing Zone Clip Installation and Parameter Alteration
AGU2.500 Heating Zone 2 Pump/Mixing Valve/Sensor Clip.
Terminal Designation
Use the boilers RU (1&2) terminals (Volt Free) to enable the second heating zone functionality. Time switch,
heating slope, pump and valve outputs.
Required Parameter Alteration. If Not Using a QAD36 Flow Sensor for 3 Way Valve Control.
To access this parameter level, Press the UP and DOWN PROG button simultaneously until H90 is displayed on the screen, Press the UP
PROG button to access H554 b5, alter the setting if required using the MINUS button. To save the alteration and leave this level
presses the INFO button.
H552 must be set to 66 to ensure correct operation of mixing zone clip.
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80/125mm Concentric Flue Components (Pa Resistances)
80mmØ PPS Flue Components (Pa Resistances)
10.0 Fluing Options
Please note that excessive resistance within the flue and combustion air supply systems will lead
to a reduction in the output of the appliance and induce operational faults.
When flues are installed with horizontal sections/portions a 30 fall back to the boiler must be
maintained. This will not only ensure condensate removal preventing premature seal failure, but
also prevent nuisances dripping from the wall terminal.
10.01 Replacing a MicroMat EC 60-75 with a ProCon 77 complete with Flue Adapter.
(DN80/125mm)
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MicroMat EC Flue adapter part number 96.36400-7020
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© MHG Heating Ltd
10.1 Single ProCon Balanced Flued. Through The Wall Termination. (DN 80/125mm)(750mm
long.)
10.2 Single ProCon Balanced Flued. Vertical Termination. (DN80/125mm)
10.2.5 Single ProCon Balanced Flued. Twin DN80 Flues C/W a DN80/125mm -2 x DN80 Boiler
Adapter.
Individual DN80 solid or flexible flues can be utilized with the ProCon range following the
application of the DN80/125 – 2 x DN80 adapter. #99.98001-0000
Alternative routes are possible:
Dual Wall Termination, Dual Roof Termination or Connection to our range of Flexible Flue Liners
DN80 – DN160.
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10.3 Single ProCon Open Flued. Through The Wall Termination. (DN 80mm)
10.4 Single ProCon Open Flued. Vertical Termination. (DN 80mm)
10.5 Cascaded Appliance Fluing Installation Open Flued.
To reduce the likelihood of recirculation of flue gases through a non firing unit it is advised to
combine the flues in the vertical only.
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10.6 Dimensions of Available Flue Components (DN80/125mm)
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Boilers with a rated Input < 70kW Net
Boilers with a rated Input > 70kW Net
*Below and opening window etc.
Below gutter soil pipes etc.
*Below balconies or car port roof.
From vertical drain or soil pipe etc.
From internal or external corners.
Above ground or balcony level.
300
(2000 where people have general access)
From a surface facing the terminal.
From a terminal facing the terminal.
*From opening in a carport into a
dwelling.
Vertically from a terminal on the
same wall.
Horizontally from a terminal on the
same wall.
Above an opening, window etc.
*Horizontally to an opening, window
etc.
Above a level roof (base of
terminal.)
From an adjacent wall (edge of
terminal.)
From adjacent opening, window etc.
From any other flue terminal.
10.7 Balanced Flue Terminal Positions For Boilers Below and Above 70kW Net Input.
(All measurements are in mm and are minimum clearances.)
* Positions not recommended.
Groups of appliances of 150kW gross input (136kW net input) and above must comply with the Clean Air Act with respect
to the chimney discharge height.
The terminal/s shall be guarded if it is less than 2000mm above the ground or in any position where it may cause injury to
persons resulting from touching a hot surface. Absolute guidance must be sought from the respective regulation.
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Control Valve incorporating a Double
Check Valve on the Mains Cold Water
pipework.
Temporary Connecting Hose, which
must be disconnected after use.
Control Valve, on the heating system.
Control Valve.
Strainer.
Verifiable Backflow Device with
Reduced Pressure Zone (RPZ Valve)
Incorporating a ‘Type BA’ Air Gap.
Tundish.
Control Valve.
11.0 Filling The System
The Initial filling of a sealed heating system, and subsequent refilling, must be by a method that
has been approved by the Water Regulation Advisory Scheme (WRAS) for that type of heating
system.
i.e. Domestic (
Non Domestic (Other than
In-House
) Fluid Category 3 (
In-House
) Fluid Category 4 (
C-3
C-4
)
)
For Category 3 systems, the approved method of filling must comprise of the following
components in the arrangement shown;
For Category 4 systems, the approved method of filling must comprise of the following
components in the arrangement shown;
Further more, in accordance with BS 6644: 2005 system with an input greater than 70kW (nett), an
automatic water replenishment unit shall be installed to automatically replenish any lost or
evaporated water.
Please refer to BS 6644: 2005 for allowable water replenishment methods for use with
sealed/pressurized heating systems.
For information on a comprehensive range of pressurization units that comply with current British
Standards and WRAS Regulations, please contact MHG Heating Ltd Sales.
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Betz Dearborn Limited
(Sentiel)
Foundry Lane
Widnes
Cheshire
WA8 8UD
Tel: 0151 424 5351
Fax: 0151 420 5447
Alpha-Fry Technologies (Fernox)
Cookson Electronics
Forsyth Road
Sheerwater
Woking
Surrey
GU21 5RZ
Tel: 0208 665 6666
Fax: 0208 665 4695
11.1 Expansion Vessel
In accordance with BS 6644: 2005, WRAS Regulations, and Local Authority Water Regulations, as
applicable, the installer shall install a suitably sized, and approved, Expansion Vessel to ensure
that the water capacity of the system has ample expansion capacity.
The location of the expansion vessel shall only be isolatable from the system via a Lockable Type
Service Valve, which shall be locked in the
OPEN
position, to prevent accidental isolation.
Furthermore, a drain facility should be provided adjacent to the expansion vessel to aide the
routine maintenance, overhaul, of the vessels Air Pressure setting.
For information on a comprehensive range of expansion vessels that comply with current British
Standards and WRAS Regulations, please contact MHG Heating Ltd Sales.
12.0 System Water Quality
Water Treatment, System Cleaning (BS 7592: 2006)
The entire primary system MUST be thoroughly cleaned and flushed to remove debris, flux
residues, etc. before opening the boiler isolation valves & flooding the boiler. Particular care must
be taken where the ProCon boiler is being retro-fitted into an old/existing system, as system silt
or magnetite can be very damaging to the new boiler.
Following cleaning and flushing the system MUST be dosed with a good quality water treatment to
prevent corrosion and the formation of scale. FAILURE TO OBSERVE THESE REQUIREMENTS WILL
RENDER THE WARRANTEE ON THE APPLIANCE VOID.
Cleaning, flushing and water treatment must be carried out in accordance with the requirements
of BS 7593:1992, prior to commissioning the boiler.
Repeated draining and refilling of the system, without replenishment of water treatment, must be
avoided, as this is very damaging to the boiler. The boiler must not operate without the system
water being correctly and adequately treated, and maintained, with an appropriate level of
corrosion inhibitor.
For specific guidance on water treatment, direct contact is advisable with:-
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12.1 Care With The Use of Solder Flux
The ProCon HT range has heat exchangers fabricated from 316L Stainless Steel. It is most
important that the compatibility of any flux is checked with the supplier before use, and that any
flux manufactures recommendations are strictly followed with regards to use in conjunction with
Stainless Steel.
If you are applying any of the ProCon Range to a system where the water quality cannot be
cleansed or treated please consider installing a system separation plate heat exchanger to ensure
absolute separation of the system water and the boiler water.
Please refer to our website for further details on our matched brazed and gasketed plate heat
exchanger range.
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Resets indicated large flashing fault codes.
Places the boiler into fault is no fault is present
(E153)
Activates HWS generation capability. Indicated
on the screen by a dash beneath the icon.
Adjusts the operating mode for the heating
circuit.
Hot water storage temperature adjustment.
Only possible is a HWS sensor is used.
HEATING CIRCUIT
FLOW
TEMPERATURE
SETPOINT
Heating flow temperature adjustment.
Or
Assumed room temperature adjustment.
(If outside air sensor installed)
Access to program settings accessing in reverse
order.
Time of day/
time
switches/
operational
settings.
Access to program settings accessing in
sequential order.
Alteration of program settings positively.
Alteration of program settings negatively.
Access to operational information and saving
altered program settings.
Fault Indication/
Boiler Flow
Temperature/
Stored HWS/
Operation Mode/
Outside Air
Temperature.
13.0 Appliance Controls
All appliance operational mode adjustments and settings are undertaken via the unit control fascia
Legend
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Not used In ProCon Ranges
Flow Temperature or Selected Parameter
Setting
Commissioning Mode Indicator Full Power (no
adjustment.)/Engineers Mode (full adjustment
via Program Up & Down Buttons.)
SPECIFIC OPERATIONAL MODE
INDICATOR
The Display Reflects the Operational Mode
Dependent Upon Inputs.
TIME OF DAY / AUTO RESETTING ERROR
Time of Day Alternating with Automatic
Resetting Error Codes.
HEATING CIRCUIT MODE INDICATOR
Indicator of Selected Heating Circuit Operating
Mode.
HOT WATER ACTIVATION INDICATOR
Indication of Activation of Hot Water
Production Mode.
Legend
© MHG Heating Ltd
If required an enhanced operational review level can be accessed.
The table on the following page indicates the level of information that is available.
To access these parameters the following sequence must be undertaken.
Press and release the INFO.
Press & Hold the Program Buttons simultaneously for at least 3 second.
The display will indicate b0
Use the Button to access the various b level parameters.
Use the or to access the other parameter levels C & d
Use the Button to access the required levels within the desired parameter level.
To leave the enhanced operational review level press INFO or wait 8 minutes for automatic refresh.
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13.1 Module Operating Codes
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14.0 Appliance Fault Codes
The ProCon range has two levels of fault code indication.
Automatic Resetting Fault Code.
A small fault code alternating with the time of day.
The appliance will stop operating for a limited period/until the error has been corrected.
Repeated occurrences of an Automatic Resetting Fault Codes will result in a Manual Reset
Fault Code.
Manual Reset Fault Code.
A large fault code is displayed on the screen along with the symbol.
The appliance will stop operating until the error has been corrected and the RESET button
has been pressed.
PLEASE NOTE.
If the RESET button is pressed when a small fault code is displayed or no fault code is displayed
the unit will display a Manual Reset Fault Code of E153 will be displayed. The RESET button must
be pressed again to clear this code.
If a fault is encountered within the appliance or Cascade LPB network, a fault code will be
generated and displayed by the failing appliance and all LPB networked RVA and Opentherm units
.
If a fault is encountered by a RVA controller or is communicated to a RVA controller via the LPB
network ER will be generated on the display.
Opening the controllers flap and pressing the Down PROG button twice will gain access to
parameter line 50 where the generated fault code can be reviewed.
In either case the fault code should be noted for future reference.
If the fault is related to a specific appliance the unit can be reset by pressing the Lockout Reset
Button.
If the fault is related to a RVA controller or the LPB communication network the fault code will
clear automatically following the rectification of the fault.
This is also applicable following the rectification of any appliance fault. This can take up to 10
minutes.
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Outside Air Sensor Fault / Not Detected
Flow Water Sensor Fault / Not Detected
System Flow Sensor Faulty / Not Detected
Flue Gas Sensor Fault / Not Detected
Return Water Sensor Fault / Not Detected
System Return Water Sensor Fault / Not Detected
HWS Sensor Short Circuit 1
HWS Sensor Short Circuit 2 (Not Used)
HWS Volt Free Switch Fault / Not Detected
Incorrect Room Unit Connected
Air Pressure Sensor Not Detected (Not Used)
Water Pressure Sensor Defective (Not Used)
LPB Short Circuit (Boiler Cascade Wiring)
LPB Address Conflict (Boiler Cascade Settings)
Short Circuit on PPS Connection (Not Used in ProCon Configuration)
Conflict Between Time of Day Master Control (Boiler / QAA70 / RVS43)
Annual Service of Unit is Due. (QAA73 Service Tool Required to reset timer See Section 16.0)
Module Water Temperature Overheat
Module Temperature Too High (Auto Resetting)
Flue Gas Temperature overheat (Not Used)
High System Water Pressure Sensor (Not Used)
Low System Water Pressure Sensor (Not Used)
System Water Pressure Switch Activated (Below 0.8 bar)
Module Temperature Too High (Auto Resetting)
Flame Extinguished During Operation (LMU Version D)
Air Supply Error. Fan not operating at correct speed (LMU Version D)
Flue Temperature Too High (Auto Resetting)
External Safety Interlock Activated (Open Circuit)
No Flame Detected After Final Ignition Attempt
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Flame Extinguished During Operation (LMU Version C)
Air Supply Error Fan not operating at correct speed (LMU Version C)
LPB Segment / Address Not Recognized (Boiler Cascade Settings)
LPB Missing Partner (Boiler Cascade Settings)
Wrong Device Connected to PPS Circuit (Not Used in ProCon Configuration)
Unrecognized Plant Configuration
Burner Modules Not Connected (PPS Circuit Not Used in ProCon Configuration )
LPB Interface Not Configured (Boiler Cascade Settings)
Module LMU64 Controller Malfunction
Module LMU64 Controller Parameter Programming Error
Module Control Interlocked
The Reset Button Has Been Pressed When No Large Error Code Was Being
Displayed.
Module Operating Outside of Predefined Parameters. (System Hydraulic Error.)
Fan Not Reaching Set Point
Module Combustion Fan Speed Too High
Air Pressure Switch Fault (Not Used)
Flow Switch / Pressure Switch Open (Not Used)
Air Pressure Switch Fault (Not Used)
Module Operating in Chimney Mode 100% Output
Module Operating in Commissioning Mode
Module Controller / QAA73 Room Unit in Parameter Setting Mode
Combustion Fan Not Reaching Ignition Speed
Combustion Fan Operating Beneath Minimum Setting
Combustion Fan Not Reaching Pre Purge Speed
Flame Rectification Signal Detected When Burner Off
Flame Rectification Signal Detected When Burner Off
14.1 Enhanced Fault Diagnosis Codes (LMU Internal Software Diagnostic Codes)
If required a more detailed fault diagnosis code can be viewed. This will assist where a definitive
cause for a repeated operational error cannot be found. The enhanced fault diagnosis code is
displayed at b0 within the second INFO level. Access to this level is detailed on page 49.
The table below indicates a limited number of enhanced fault codes. If the exact number indicated
by the appliance is not detailed below please call our Technical Department or guidance.
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Flame Signal Lost During Operation
Flame Signal Lost During Operation
Flame Signal Lost During Operation
Flame Signal Not Detected Following Last Ignition Attempt
Flame Signal Not Detected Following Last Ignition Attempt
The Reset Button is being Continually Depressed. (Possible Display Module Mounting
Error.)
The Reset Button Has Been Pressed When No Error Has Been Displayed (E153 Generator.)
Rectification Circuit (Capacitor) failure (Internal LMU Fault)
Rectification Circuit (Capacitor) failure (Internal LMU Fault)
Combustion Fan Not Reaching Correct Speed
EMV caused by badly adjusted or failing ignition electrode. Moisture within the boiler case. Check for
flue vitiation. Fluctuating power supply.
EMV caused by badly adjusted or failing ignition electrode. Moisture within the boiler case. Check for
flue vitiation. Fluctuating power supply.
System Hydraulic Error. Return Temperature > Flow Temperature. (Repeatedly.)
System Hydraulic Error. Return Temperature > Flow Temperature. (Repeatedly.)
System Hydraulic Error. Return Temperature > Flow Temperature. (Repeatedly.)
System Hydraulic Error. Return Temperature > Flow Temperature. (Repeatedly.)
System Hydraulic Error. Return Temperature > Flow Temperature. (Repeatedly.)
Boiler Flow Temperature Rising to Above Maximum Limit Temperature When Burner Is On.
Boiler Flow Temperature Rising to Above Maximum Limit Temperature When Burner Is Off.
System Hydraulic Error. Δ T between Flow and Return Too High. (Repeatedly.)
System Hydraulic Error. Δ T between Flow and Return Too High. (Repeatedly.)
System Hydraulic Error. Δ T between Flow and Return Too High. (Repeatedly.)
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Press and release one of the or Program Buttons.
The display will now indicate P1 or P727
Use the Program Buttons to access the desired parameter line. Use the Button to alter
the displayed parameter to the required setting.
To save the adjusted parameter move to the adjacent parameter or press and release the INFO
Button if you wish to exit this level.
To exit without saving any adjustment press and release the MODE Button.
Press & Hold the Program Buttons simultaneously for at least 3 seconds.
The display will indicate H90
Use the Program Buttons to access the desired parameter line.
Use the Button to alter the displayed parameter to the required setting.
To save the adjusted parameter move to the adjacent parameter or press and release the INFO
Button if you wish to exit this level.
To exit without saving any adjustment press and release the MODE Button.
Press & Hold the Program Buttons simultaneously for at least 9 seconds.
The display will indicate - - - - -
A password is required to access this level. (Please contact MHG prior to accessing this as parameter
level)
Use the Program Buttons to access the desired parameter line. Use the Button
to alter the displayed parameter to the required setting.
To save the adjusted parameter move to the adjacent parameter or press and release the INFO
Button if you wish to exit this level.
To exit without saving any adjustment press and release the MODE Button.
15.0 Accessing Boiler Parameters
Control Parameter Default Settings.
All Units are preset for correct operation.
However if alterations are required to enhance the operation of the unit following the application of optional
control the procedure is detailed below.
The following Pages detail the parameters of the LMU64 controllers, For your assistance the Standard Factory
settings are indicated.
(Please note, the installer/commissioning engineer may have changed some of these settings to suit the
system installed.)
To access the parameters detailed below the boiler’s control panel must be used. (Only boilers supplied prior
to 2003 will require a QAA73 Room Unit to access the control parameters. The unit must be connected to the
RU terminals or directly to the LMU64 controller via the X10:01 terminal.)
There are three levels of access available, as follows. If you cannot access a particular parameter line, please
consult with MHG Heating Ltd Technical Department for further assistance.
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Reduced Room Temperature Set Point (If outside air sensor installed)
Minimum Boiler Flow Temperature
Time Switch 1 Heating Zone 1 Set Points
Heating Circuit 1 Time Switch 1 Day Selection
Heating Circuit 1 Time Switch 1 First On
Heating Circuit 1 Time Switch 1 First Off
Heating Circuit 1 Time Switch 1 Second On
Heating Circuit 1 Time Switch 1 Second Off
Heating Circuit 1 Time Switch 1 Third On
Heating Circuit 1 Time Switch 1 Third Off
Time Switch 2 Heating Zone 2 Set Points
(*AGU2.500 Clip and QAD36 sensors required )
Heating Circuit 2 Time Switch 2 Day Selection
Heating Circuit 2 Time Switch 2 First On
Heating Circuit 2 Time Switch 2 First Off
Heating Circuit 2 Time Switch 2 Second On
Heating Circuit 2 Time Switch 2 Second Off
Heating Circuit 2 Time Switch 2 Third On
Heating Circuit 2 Time Switch 2 Third Off
Time Switch 3 HWS Set Points
(**QAZ36 HWS Sensor Required)
Time Switch 3 Day Selection
Default Reset of Time Switch Setting
Summer / Winter Changeover Temperatures
Level One end User Parameters
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75 & 77 HM
{Cascade
Slave Boilers}
Reduced Temperature for DHW
DHW Production Control
(0=Time control 1=Constant)
DHW Production Control 0=Non Eco 1=Eco
DHW Secondary Pump Control
(0= As H91. 1= As HWS Time Switch)
(K2, X2:03, H615:6)
Minimum boiler setpoint temperature
(20 °C<=TkSmin<=TkSmax)
Maximum boiler setpoint temperature
(TkSmin<=TkSmax<=90 °C)
Boiler setpoint at design outside temperature
Minimum flow setpoint temperature
(20 °C<=TvSmin<=TvSmax)
Maximum flow setpoint temperature
(TvSmin<=TvSmax<=90 °C)
Summer / winter changeover temperature
(30 °C: S / W changeover deactivated)
Heating curve slope heating circuit 1
Heating curve slope heating circuit 2
Maximum speed at maximum output in heating
mode
(maximum speed limitation)
Maximum degree of modulation in heating mode
(LmodTL <= PhzMax <= LmodVL)
Minimum boiler output in kW
(lower calorific value)
Maximum boiler output in kW
(lower calorific value)
Overrun time of pumps, max. 210 min
(setting 255: continuous operation of Q1)
Minimum burner pause time
(heat demand-dependent switching hysteresis)
Constant for quick setback without room influence
Hydraulic system adjustment
Setting flags: status code open-circuit sensor for ANx
channel suppressed / not suppressed
b0=1
b1=0
b2=1
b3=1
b4=0
b5=1
b6=0
b7=0
b0=1
b1=0
b2=1
b3=1
b4=0
b5=1
b6=0
b7=0
b0=1
b1=0
b2=1
b3=1
b4=0
b5=1
b6=0
b7=0
b0=1
b1=0
b2=1
b3=1
b4=0
b5=1
b6=0
b7=0
Level Two Engineer Parameters
© MHG Heating Ltd
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© MHG Heating Ltd
75 & 77 HM
{Cascade
Slave Boilers}
b0=0
b1=0
b2=0
b3=0
b4=1
b5=0
b6=0
b7=0
b0=0
b1=0
b2=0
b3=0
b4=1
b5=0
b6=0
b7=0
b0=0
b1=0
b2=0
b3=0
b4=1
b5=0
b6=0
b7=0
b0=0
b1=0
b2=0
b3=0
b4=1
b5=0
b6=0
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=1
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=1
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=1
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=1
b7=0
Running time of actuator in heating circuit 2
(TimeOpening / TimeClosing)
LPB device number of LMU
(HM or Master Boiler 2 then Slave units 3…12)
LPB segment number of LMU
Function programmable output K2 LMU
Progr input on clip-in function module
Function output1 clip-in function module
Function output2 clip-in function module
Function output3 clip-in function module
Maximum value of heat demand with external predefined
temperature setpoint
(5 °C< = TAnfoExtMax< = 130 °C)
Setting flags of maintenance alarms
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=0
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=0
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=0
b7=0
b0=1
b1=0
b2=0
b3=0
b4=0
b5=0
b6=0
b7=0
Months (interval) since last service visit
1st Historical Fault – Number of Occurrences.
1st Historical Fault – Operating Phase.
1st Historical Fault – Operating Error Code
2nd Historical Fault – Number of Occurrences.
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© MHG Heating Ltd
75 & 77 HM
{Cascade
Slave Boilers}
2nd Historical Fault – Operating Phase.
2nd Historical Fault – Operating Error Code
3rd Historical Fault – Number of Occurrences.
3rd Historical Fault – Operating Phase.
3rd Historical Fault – Operating Error Code
4th Historical Fault – Number of Occurrences.
4th Historical Fault – Operating Phase.
4th Historical Fault – Operating Error Code
5th Historical Fault – Number of Occurrences.
5th Historical Fault – Operating Phase.
5th Historical Fault – Operating Error Code
Current Historical Fault – Number of Occurrences
Current Historical Fault – Operating Phase.
Current Historical Fault – Operating Error Code
Current Fault Code – ALBATROS Error Code
1st Historical Fault – ALBATROS Error Code
2nd Historical Fault – ALBATROS Error Code
3rd Historical Fault – ALBATROS Error Code
4th Historical Fault – ALBATROS Error Code
5th Historical Fault – ALBATROS Error Code
Current Historical Fault – ALBATROS Error Code
Measured value of ionization current
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© MHG Heating Ltd
16.0 RVS43 Cascade Manager (ProCon 75 HM & 77 HM)
Boiler Mounted Unit AVS37 Room Unit QAA75
If the controller is displaying German Text undertake the following;
Press the ESC button several times to display the DEFAULT SCREEN.
Press the OK button once, turn the wheel clockwise one click to highlight 'Bedieninheit', Press the
OK button, The screen displays 'Bedieninheit Sprache' 'Deutsch', Press the OK button to make
'Deutsch' flash, Turn the wheel one click anticlockwise to select 'English'. Press the OK button. The
screen indicates 'OPERATOR SECTION, LANGUAGE', Press the ECS button twice, to return to the
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main screen.
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© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
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© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
[email protected] Web www.mhgheating.co.uk
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© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
[email protected] Web www.mhgheating.co.uk
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© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
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© MHG Heating Ltd
A full list of defaults can be found in the respective controller guide supplied with the appliance.
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© MHG Heating Ltd
Time switch program HC1
Monday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Tuesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Wednesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Thursday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Friday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Saturday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC1
Sunday
06:00 (On); 22:00 (Off); -; -; -;
-
Standard values TSP heating
circuit 1
Time switch program HC2
Monday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC2
Tuesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC2
Wednesday
06:00 (On); 22:00 (Off); -; -; -;
-
RVS 43 Defaults
To access the most useful menu press the OK button once then press and hold the INFO button
for 5 seconds until the lower section of the screen changes. Use the wheel to highlight the
ENGINEER setting. Press the OK button.
Access to all setting below is now possible.
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Time switch program HC2
Thursday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC2
Friday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC2
Saturday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program HC2
Sunday
06:00 (On); 22:00 (Off); -; -; -;
-
Standard values TSP heating
circuit 2
Time switch program 3
Monday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3
Tuesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3
Wednesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3
Thursday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3 Friday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3
Saturday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 3
Sunday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Monday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Tuesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Wednesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Thursday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4 Friday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Saturday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 4
Sunday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5
Monday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5
Tuesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5
Wednesday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5
Thursday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5 Friday
06:00 (On); 22:00 (Off); -; -; -;
-
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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© MHG Heating Ltd
Time switch program 5
Saturday
06:00 (On); 22:00 (Off); -; -; -;
-
Time switch program 5
Sunday
06:00 (On); 22:00 (Off); -; -; -;
-
Holiday period 1 HC1: first
day
Holiday period 1 HC1: last
day
Holiday period 2 HC1: first
day
Holiday period 2 HC1: last
day
Holiday period 3 HC1: first
day
Holiday period 3 HC1: last
day
Holiday period 4 HC1: first
day
Holiday period 4 HC1: last
day
Holiday period 5 HC1: first
day
Holiday period 5 HC1: last
day
Holiday period 6 HC1: first
day
Holiday period 6 HC1: last
day
Holiday period 7 HC1: first
day
Holiday period 7 HC1: last
day
Holiday period 8 HC1: first
day
Holiday period 8 HC1: last
day
Holiday operating level HC1
Holiday period 1 HC2: first
day
Holiday period 1 HC2: last
day
Holiday period 2 HC2: first
day
Holiday period 2 HC2: last
day
Holiday period 3 HC2: first
day
Holiday period 3 HC2: last
day
Holiday period 4 HC2: first
day
Holiday period 4 HC2: last
day
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© MHG Heating Ltd
Holiday period 5 HC2: first
day
Holiday period 5 HC2: last
day
Holiday period 6 HC2: first
day
Holiday period 6 HC2: last
day
Holiday period 7 HC2: first
day
Holiday period 7 HC2: last
day
Holiday period 8 HC2: first
day
Holiday period 8 HC2: last
day
Holiday operating level HC2
Holiday period 1 HC3/P: First
day
Holiday period 1 HC3/P: Last
day
Holiday period 2 HC3/P: First
day
Holiday period 2 HC3/P: Last
day
Holiday period 3 HC3/P: First
day
Holiday period 3 HC3/P: Last
day
Holiday period 4 HC3/P: First
day
Holiday period 4 HC3/P: Last
day
Holiday period 5 HC3/P: First
day
Holiday period 5 HC3/P: Last
day
Holiday period 6 HC3/P: First
day
Holiday period 6 HC3/P: Last
day
Holiday period 7 HC3/P: First
day
Holiday period 7 HC3/P: Last
day
Holiday period 8 HC3/P: First
day
Holiday period 8 HC3/P: Last
day
Holiday operating level HC3/P
Operating mode heat circuit 1
Room temperature Comfort
setpoint HC1
Room temp reduced setpoint
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Room temp frost protection
setpoint HC1
Comfort setpoint max
heating circuit 1
Heating curve parallel
displacement HC1
Heating curve adaptation heat
circuit 1
Summer/winter changeover
temp heat circuit 1
24-hour heating limit HC1
Flow temp min limitation heat
circuit 1
Set to required minimum flow
temperature
Flow temp max limitation
heat circuit 1
Set to required maximum heating
flow temperature
Room temp gain factor heat
circuit 1
Room temperature limitation
heating circuit 1
Room temp setpoint boost
HC1 (boost heating)
Quick setback heat circuit 1
Optimum start control max
forward shift HC1
Optimum stop control max
forward shift HC1
Start reduced room temp
setpoint increase HC1
End reduced room temp
setpoint increase HC1
Pump heating circuit
overtemp protection HC1
Mixing valve setpoint boost
heating circuit 1
Actuator control mode heat
circuit 1
Actuator switching
differential heat circuit 1
Actuator running time heat
circuit 1
P-band (Xp) heat circuit 1
Integral action time (Tn) heat
circuit 1
Flooring plaster dry up
function HC1
Floor setpoint manually HC1
Overtemperature drop
heating circuit 1
Heating circuit 1 with buffer
Heating circuit 1 with
precontr/primary pump
Operating mode changeover
heating circuit 1
Operating mode cooling
circuit 1
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Room temp Comfort setpoint
cooling circuit 1
Release cooling circuit 1
Flow setpoint at outside temp
25°C CC1
Flow setpoint at outside temp
35°C CC1
Cooling limit at outs temp
cooling circuit 1
Remaining time after heating
cooling circuit 1
Start summer compensation
at ouside temp CC1
End summer compensation at
ouside temp CC1
Summer compensation
setpoint increase CC1
Flow setpoint min at outside
temp 25°C CC1
Flow setpoint min at outside
temp 35°C CC1
Room temperature gain factor
cooling circuit 1
Room temp limitation cooling
circuit 1
Mixing valve decrease cooling
circuit 1
Actuator control mode
cooling circuit 1
Actuator switching diff
cooling circuit 1
Running time actuator
cooling circuit 1
P-band (Xp) cooling circuit 1
Integral action time (Tn)
cooling circuit 1
Mixing valve cooling circuit 1
in heating mode
Locking time dew point limit
CC1
Flow boost hygrostat cooling
circuit 1
Flow setp incr start at rel
Humidity CC1
Cooling circuit 1 with buffer
Cooling circuit 1 with
precontr/primary pump
Operating mode changeover
cooling circuit 1
Operating mode heat circuit 2
Room temperature Comfort
setpoint HC2
Room temp reduced setpoint
heat circuit 2
Room temp frost protection
setpoint HC2
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Heating curve parallel
displacement HC2
Heating curve adaptation heat
circuit 2
Summer/winter changeover
temp heat circuit 2
24-hour heating limit HC2
Flow temp min limitation heat
circuit 2
Set to required minimum flow
temperature
Flow temp max limitation
heat circuit 2
Set to required maximum heating
flow temperature
Room temp gain factor heat
circuit 2
Room temperature limitation
heating circuit 2
Room temp setpoint boost
HC2 (boost heating)
Quick setback heat circuit 2
Optimum start control max
forward shift HC2
Optimum stop control max
forward shift HC2
Start reduced room temp
setpoint increase HC2
End reduced room temp
setpoint increase HC2
Pump heating circuit
overtemp protection HC2
Mixing valve setpoint boost
heating circuit 2
Actuator control mode heat
circuit 2
Actuator switching
differential heat circuit 2
Actuator running time heat
circuit 2
P-band (Xp) heat circuit 2
Integral action time (Tn) heat
circuit 2
Flooring plaster dry up
function HC1
Floor setpoint manually HC2
Overtemperature drop
heating circuit 2
Heating circuit 2 with buffer
Heating circuit 2 with
precontr/primary pump
Operating mode changeover
heating circuit 2
Room temperature Comfort
setpoint HC3/P
Reduced room temperature
setpoint HCP
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Room temperature frost
protection setpoint HC3/P
Comfort setpoint max HC3/P
Heating curve slope HC3/P
Heating curve parallel
displacement HC3/P
Heating curve adaption
HC3/P
Summer/winter changeover
temperature HC3/P
24-hour heating limit HC3/P
Flow temperature min
limitation HC3/P
Flow temperature max
limitation HC3/P
Room temperature authority
HC3/P
Room temperature limitation
HC3/P
Room setpoint boost HC3/P
(boost heating)
Optimum start control max
forward shift HC3/P
Optimum stop control max
forward shift HC3/P
Start reduced room temp
setpoint increase HC3/P
End reduced room temp
setpoint increase HC3/P
Pump heating circuit
overtemp protection HC3/P
Floor curing function HC3/P
Floor setpoint manually
HC3/P
Flow temperature setpoint
floor curing HC3/P
Floor curing HC3/P days
fulfilled
Overtemperature drop
heating circuit 3/P
Heating circuit 3/P with
buffer
Heating circuit 3/P with
precontr/primary pump
Operating mode changeover
HC3/P
DHW temperature nominal
setpoint
DHW temperature reduced
setpoint
DHW temperature nominal
setpoint max
Heating programs with forward
shift
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Legionella function
periodicity
Time for legionella function
Legionella function setpoint
Dwelling time at legionella
function setpoint
Circul. pump operation
during legionella func
DHW circulating pump release
DHW circulating pump cycling
H1 pump DHW charging
priority
Pump H1 overtemperature
drop
H1 pump with
precontr/primary pump
H2 pump DHW charging
priority
Pump H2 overtemperature
drop
H2 pump with
precontr/primary pump
Pool setpoint solar heating
Pool setpoint producer
heating
Pool charging priority solar
Precontroller/primary pump
Flow temp min limitation
precontroller
Flow temp max limitation
precontroller
Flow temp min limitation
cooling precontroller
Mixing valve setpoint boost
precontroller
Mixing valve decrease
precontroller
Actuator control mode
precontroller
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Actuator switching
differential precontroller
Actuator running time
precontroller
Integral action time (Tn)
precontroller
Precontroller/primary pump
Automatic mode without boiler
run time extension
Release oil-/gas boil below
outside temp thresh
Boiler temp min limitation
Boiler temp min limitation
OEM
Boiler temp max limitation
Boiler temp max limitation
OEM
Boiler switching differential
Burner running time min
limitation
Protective startup consumer
Protective startup boiler
pump
Optimum start control min
limitation boiler temp
Min. limitation of the boiler
return temp EXP
Actuator running time return
temp limitation
P-band (Xp) return temp
limitation
Integral action time (Tn)
return temp limitation
Derivative action time (Tv)
return temp lim
Bypass pump switching
differential
According to boiler return temp
Frost protection for plant
boiler pump
Nominal power first stage
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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Power range, lower limit
(Pmin)
Power range, upper limit
(Pmax)
Release limit producer
sequence
Reset limit producer
sequence
Switch-on delay lag heat
source
Forced time basic stage
during producer turn on
Time to automatic producer
sequence switching
Exclude at automatic
producer sequence switching
Protective startup cascade
pumpe
Cascade return setpoint
minimum
Cascade return setpoint
minimum OEM
Actuator running time return
temp limitation
P-band (Xp) return temp
limitation
Integral action time (Tn)
return temp limitation
Min temp differential
hydraulic balancing
Temp differential on solar
Temp differential off solar
Min charging temperature
DHW storage tank
Temperature differential ON
buffer
Temperature differential OFF
buffer
Min charging temperature
buffer
Temperature differential
swimming pool ON
Temperature differential
swimming pool OFF
Min charging temperature
swimming pool
Charging priority storage
Charging time relative priority
Wait time relative priority
Wait time parallel operation
Start delay secondary pump
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Min collector pump running
time
Collector Start function on
Collector Start function off
Collector Start function
gradient
Collector frost protection
temp
Collector overtemperature
protection
Evaporation temperature of
heat carrier
Volumetric flow solar pump
Solid fuel boiler locks other
producers
Min solid fuel boiler setpoint
Temp differential on solid
fuel boiler
Temp differential off solid
fuel boiler
Comparative temperatur solid
fuel boiler
Pump overrun time solid fuel
boiler
Overtemperature drop solid
fuel boiler
Frost protection for plant
solid fuel boiler
Automatic producer lock
switching differential
Diff. Buffer/HC temp to
producer release
Temp diff buffer/CC to
source release
Min buffer temp while heating
mode
Max buffer temp while
cooling mode
Buffer stratification protection
Buffer stratification protect
Temp diff max
Buffer stratification protect
foreseeable time
Buffer stratification prot
integral action time
DHW protection combi
storage
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Return cooling temperature
buffer
Buffer return cooling
DHW/HC
Buffer return cooling
Collector
Return diverting temp
differential On
Return diverting temp
differential Off
Comparative temperatur
return diverting
Operating action return
diverting
Buffer partial charging
setpoint
Full charging temperature
min
DHW switching differential
DHW charging time limitation
DHW discharging protection
DHW charging temperatrure
max
DHW storage tank
temperature max
DHW storage tank return
cooling temperature
DHW storage tank return
cooling Producer/HC
DHW storage tank return
cooling Collector
DHW electric immersion
heater operating mode
DHW electric immersion
heater release
DHW electric immersion
heater control
charging priority time push
DHW storage tank
overtemperature drop
DHW storage tank with buffer
DHW storage tank with
precontr/primary pump
DHW storage tank with solar
Mixing valve setpoint boost
DHW precontr
Actuator running time DHW
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Integral action time (Tn) DHW
precontr
Comparative temperatur
transfer
Min setp diff to tank temp
Actuator running time DHW
instantaneous heater
P-band (Xp) DHW
instantaneous heater
Integral action time (Tn) DHW
instan heater
Derivative action time (Tv)
instantaneous heater
Mixing valve 1 appliacation
Change to Thermostat if Volt Free is
required.
Cascade return sensor B70
Input H1 function selection
Operating mode changeover
HCs+DHW
Change to HCS only or 010 Volt
Control.
If 0-10 Volt control is required
reduce #720 to as low as possible
Change to NC if Volt Free enabling
is required.
Function value contact H1
Function mixing valve group
1
Function extension module 1
Function extension module 2
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Input H2 function selection
Operating mode changeover
HCs+DHW
Function value contact H2
Measured value corr collector
sensor 1 (B6)
Measured value corr collector
sensor 2 (B61)
Outside temp sensor
measuring correction
Sensor type flue gas
temperature
Measured value corr flue gas
sensor (B8)
Time constant setpoint
compensation
Frost protection for the plant
Heat demand release below
outside temp thresh
Heat demand release above
outside temp thresh
Heat req with economy mode
Water pressure critical min
Water pressure 2 critical min
Control number heat
generation 1
Control number heat
generation 2
Control number storage tank
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Partial diagram oil/gas-fired
boiler
Partial diagram solar collector
Partial diagram heat circuit 1
Partial diagram cooling circuit
1
Partial diagram heat circuit 2
Partial diagram heat circuit P
Partial diagram dhw storage
Partial diagram converter
Partial diagram solid fuel
boiler
Partial diagram swimming
pool
Partial diagram hydraulic
balancing
Partial diagram instantaneous
heater
LPB power supply function
selection
Central switch-over working
area
Summer/winter changeover
automatic
Operating mode changeover
All controllers within system
Outside temp limit external
source accept
Controller is the clock time
master
Time flow temperature alarm
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Time flow temperature alarm
heating circuit 2
Time boiler temperature
alarm
Time flow temperature alarm
cooling circuit 1
Time stamp error history
entry 1
Error code history entry 1
Time stamp error history
entry 2
Error code history entry 2
Time stamp error history
entry 3
Error code history entry 3
Time stamp error history
entry 4
Error code history entry 4
Time stamp error history
entry 5
Error code history entry 5
Time stamp error history
entry 6
Error code history entry 6
Time stamp error history
entry 7
Error code history entry 7
Time stamp error history
entry 8
Error code history entry 8
Time stamp error history
entry 9
Error code history entry 9
Time stamp error history
entry 10
Error code history entry 10
Service/special operation
Burner hours run
maintenance interval
Burner hours run since
maintenance
Burner starts maintenance
interval
Burner starts since
maintenance
Delay flue gas temp signal
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Telephone customer service
Used to check inputs and outputs
Sensor temperature BX21
module 1
Sensor temperature BX22
module 1
Sensor temperature BX21
module 2
Sensor temperature BX22
module 2
Signal 1st burner stage E1
Room frost protection active
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Cascade supply temperature
actual value
Cascade supply temperature
setpoint
Cascade return temp actual
value
Cascade return temp actual
setpoint
Time to automatic producer
sequence switching
Status cascade return mixing
valve opens (Y25)
Status cascade return mixing
valve closes (Y26)
State burner stage 1 (T2)
Boiler return temp setpoint
Flue gas temp actual value
Flue gas temp max actual
value
Number of burner starts
stage 1
Collector temp 1 actual value
(B6)
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Collector temp max actual
value 1 (B6)
Collector temp min actual
value 1 (B6)
Temp differential collector
1/DHW
Temp differential collector
1/buffer
Temp differential collector
1/pool
Solar flow sensor for yield
measurement B63
Solar return sensor for yield
measurement B64
24-hour yield solar energy
solar yield operating hours
Collector overtemp protection
operating hours
Collector temp 2 actual value
(B61)
Collector temp max actual
value 2 (B61)
Collector temp min actual
value 2 (B61)
Temp differential collector
2/DHW
Temp differential collector
2/buffer
Temp differential collector
2/pool
Solid fuel boiler temperature
B22
Operating hours solid fuel
boiler
Status return mixing valve
opens (Y7)
Status return mixing valve
closes (Y8)
Status boiler bypass pump
(Q12)
Producer locking via contact
H
Status collector pump 1 (Q5)
Status collector pump 2 (Q16)
Status solar pump ext.
Exchanger K9
Status solar actuator buffer
(K8)
Status solar actuator pool
(K18)
Status Solid fuel boiler pump
(Q10)
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Status heat circuit pump (Q2)
Status heat circuit mixing
valve opens (Y1)
Status heat circuit mixing
valve closes (Y2)
Room temp actual value heat
circuit 1
Room temp setpoint actual
HC1
Room model temperature
HC1
Flow temp actual value heat
circuit 1
Flow temp setpoint resulting
HC1
State cooling circuit pump 1
State cooling circuit mixing
valve 1 opening
State cooling circuit mixing
valve 1 closing
State diverting valve cooling
Flow temperature actual value
cooling circuit 1
Flow temp setpoint resulting
CC1
State heating circuit pump 2
State heating circuit mixing
valve 2 opening
State heating circuit mixing
valve 2 closing
Room temp actual value heat
circuit 2
Room temp setpoint actual
HC2
Room model temperature
HC2
Flow temp actual value heat
circuit 2
Flow temp setpoint resulting
HC2
Room temperature actual
value HC3/P
Room temperature setpoint
current HC3/P
Room model temperature
HC3/P
Flow temperature setpoint
resulting HC3/P
DHW temperature actual
value top (B3)
DHW temperature setpoint
current
DHW temperature actual
value bottom (B31)
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DHW circulating temperatur
DHW precontroller
temperatur actual value
DHW precontroller
temperatur setpoint
DHW instantaneous heater
setpoint
Actual value of the swimming
pool temp B13
Setpoint temperature
swimming pool
Precontroller actual value
Segment flow temperature
actual value
Segment flow temperature
setpoint
Buffer temp actual value top
(B4)
Buffer storage tank setpoint
Buffer temp actual value
bottom (B41)
Buffer temp actual value
middle (B42)
Flow temperature setpoint H1
Flow temperature setpoint H2
State multifunctional relay
(QX1)
State multifunctional relay
(QX21 Modul 1)
State multifunctional relay
(QX22 Modul 1)
State multifunctional relay
(QX23 Modul 1)
State multifunctional relay
(QX21 Modul 2)
State multifunctional relay
(QX22 Modul 2)
State multifunctional relay
(QX23 Modul 2)
State 2nd speed heating
circuit pump (Q21)
Operating mode changeover
heating circuit 1
State 2nd speed heating
circuit pump (Q22)
Operating mode changeover
heating circuit 2
State heating circuit pump
3/P
Stat 2nd speed heating circuit
pump (Q23)
Operating mode changeover
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State DHW circulating pump
(Q4)
State electric immersion
heater DHW
Operating mode changeover
DHW
Status primary pump (Q14)
Status precontroller mixing
valve opens (Y19)
Status precontroller mixing
valve closes (Y20)
Output heat generation lock
(Y4)
Status time program 5 relais
(K13)
Status return temp valve
(Y15)
State air dehumidifier (K29)
Status DHW charging
controller Y31
Status DHW charging
controller Y32
Status instantaneous heater
pump (Q34)
Status instantaneous heater
opens (Y33)
Status instantaneous heater
closes (Y34)
State storage transfer pump
(Q11)
State DHW stirring pump
(Q35)
DHW intermediate circuit
pump (Q33)
No maintenance message
pending
No maintenance message
pending
Boiler temperature setpoint in
manual operation
Chimney sweep function
burner output
Flow temp setpoint flooring
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Flooring plaster dry up day
HC1
Floor curing HC1 days
fulfilled
Flow temp setpoint flooring
plaster dry up HC2
Flooring plaster dry up day
HC2
Floor curing HC2 days
fulfilled
DHW temperature actual
value top (B3)
Collector temp 1 actual value
(B6)
Solid fuel boiler temperature
B22
Buffer temp actual value top
(B4)
Actual value of the swimming
pool temp B13
Telephone customer service
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17.0 Commissioning The Appliance
17.1 Pre-Commissioning Checks
Prior to undertaking the commissioning of the unit please ensure that the system water has been
cleansed and treated with a suitable inhibitor as detailed in Filling the system and system water
quality.
Prior to applying power to the appliance its circulation pump should be bled and checked to
ensure free rotation of the armature. Also ensure that the ignition electrodes spark gap is set to
4mm.
17.2 Combustion System Commissioning.
The commissioning function enables the boiler to be started up in heating
mode by pressing the
Buttons simultaneously .
There are two levels of operation accessed via the commissioning mode.
Operation at Maximum Output With No Adjustment.
Pressing the BUTTONS for more than 3 seconds but less than 6 seconds places the appliance in
High Fire mode.
To indicate that the module is operating under the control of the commissioning mode an arrow
will appear on the display adjacent to the symbol. The display will also indicate 100%
This mode is maintained until the limit thermostat temperature is reached or the coommissioning
buttons are pressed from more than 1 second.
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Operation at Maximum or Minimum Output For Flue Gas Analysis and Gas Valve Adjustment
Pressing the BUTTONS for more than 6 seconds. places the appliance in High Fire mode.
To indicate that the module is operating under the control of the commissioning mode an arrow
will appear adjacent to the symbol.
The display will also indicate 100%.
The output of the appliance can be altered by using the buttons to move between 100%
maximum outout and 0% minimum output.
Alterantaivley the output of the appliance can be altered by using the buttons to descrease
or increase the output by 1% per press.
This mode is maintained until the limit thermostat temperature is reached or the coommissioning
buttons are pressed from more than 1 second.
Whilst the appliance is operating under the control of the commissioning mode (with adjustment)
the gas valve can be adjusted to give correct flue gas analysis readings.
The appliance is equipped with a modulating gas valve.
The modulating gas valve must be set at High Fire and Low Fire to ensure correct operation
throughout its modulating range.
It is advisable to check the combustion figures on High and Low Fire prior to carrying out any
adjustments.
Adjusting the High Fire has a marked effect on the Low Fire figures. Where as adjusting the Low
Fire has little effect on the High Fire figures.
The High fire adjustment is carried out via the 2.5mm Allen Key socket D
The High Fire adjustment is a Gate type restrictor.
Therefore turning the screw clockwise will close the gate and thus restrict the quantity of gas
passing through to the burner.
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The Low fire adjustment is carried out via the 2.5mm Allen Key socket N
The Low Fire adjustment is a diaphragm governor.
Therefore turning the screw clockwise will increase the pressure on the diaphragm and thus
increase the quantity of gas passing through to the burner.
Legend
A. Valve Inlet Gas Pressure Test Point
B. Valve Outlet Gas Pressure Test Point
D. High Fire Adjuster (Gate Type)
N. Low Fire Adjuster (Governor Type)
A flue gas analyser must be used to ensure that the correct combustion setting are achieved.
This is undertaken by inserting the analyser’ s probe in to plugged hole within the flue collector of
the appliance or in the tapping in the flue immediately above the appliance if present.
The combustion setting required for all ProCon appliances are as detailed in the following table.
17.3 Conversion of the Appliance to Operate on LPG (G31).
Unless specified at the time of ordering the appliance/s will be supplied ready to operate on a Natural
Gas (G20) fuel supply.
The appliances data badge will indicate the type of fuel gas the modules have been set to operate with.
Prior to firing the unit for the first time it is advisable to check the size of the gas injector.
The injectors are located on the outlet of module gas valves.
The table below indicates the size of injector for the respective fuel gas.
If the unit is required to operate on a fuel gas different from that to which it is currently set, the
following conversion procedure must be undertaken.
Isolate the fuel and electrical supplies at the appliances isolators.
Disconnect the electrical connection for the gas valves solenoid coils.
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Disconnect the gas valve from the gas supply tubing at the union immediately prior to the gas valves
inlet.
Remove the ‘Circlip’ located at the outlet of the valve securing the injector to the fan inlet bracket.
Extract the gas valve and injector from the fan inlet bracket.
Install the correctly sized injector into the outlet of the gas valve ensuring to apply the sealing washer.
Reinstall the gas valve/s complete with correct sized injector/s in the reverse order.
Following completion of the re-injectoring of all modules the units will require recommissioning as
detailed in section 15.2.
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18.0 Routine Inspection and Servicing.(A QAA73 Room Unit/service tool might be required to reset the modules service interval timer dependent upon boiler age.)
As with all Gas Appliances, we would highly recommended that a competent heating engineer services the
ProCon, at least every 12 months. This is assuming a normal daily usage of 8 – 10 hours.
If however the boiler is to be operated 24 hours a day, 7 days, we would recommend services every 6
months.
ProCon boilers will display an E105 Error Code when 12 months has lapsed, indicating that the appliance
requires a Routine Service Inspection. This code will also be displayed on the RVS43 cascade manager and
room unit if present. (E:105 Indication Reset via H630 bit 6 0-1)
If the Installer/Commissioning Engineer is unable to undertake the Routine Service Inspection, as detailed
Section 18.1, please contact the MHG Technical Department, who will be able to arrange the Routine Service
Inspection to be undertaken.
18.1 Routine Service Inspection
Before commencing any service/maintenance work, the following tasks must be undertaken.
a) Ask the end user about any problems with the operation of the boiler unit and note their comments.
b) Check the water pressure of the installation.
c) Remove the boiler casing and visually inspect all pipe and water joints for signs of leakage.
d) Inspect the top of the casing and the top of the heat exchangers for signs of water leakage or ingress.
e) Run the unit in Commissioning Mode HIGH FIRE; with the use of a flue gas analyzer record the CO2 level.
See section 15.2
f) Run the unit in Commissioning Mode LOW FIRE; with the use of a flue gas analyzer record the CO2
level.
See section 15.2
g) Listen to the sound of the combustion fan. Utilizing the appliances fascia review the units Operating
Error Codes, and note the recorded codes onto the Service Report. (H700 – H722)
h) Undertake a System Water Analysis to check the concentration level of the Water Treatment, and
note the level onto the Service Report.
i) Check the flue route including the terminal position for conformity with prevailing regulations, and trim
back any foliage that may be around the terminal.
j) Check the plant room/compartment ventilation system for conformity with prevailing regulations.
k) Check the Pressure (Safety) Relief Valve size, rating and orientation, for conformity with prevailing
regulations.
The results of the Inspections undertaken above must be acted upon, and all discrepancies should be
recorded on the Service Report and brought to the Client / End User’s attention.
Undertake any maintenance, and if necessary any preventative maintenance, that’s required.
18.2 Routine Cleaning & Maintenance (E:105 Indication Reset via H630 bit 6 0-1)
As part of the Routine Service Inspection, certain areas of the boiler need to the checked and cleaned as
necessary.
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a) Turn the boiler OFF at the ON/OFF switch and electrically isolate the boiler by removing the plug or
fuse from the boiler supply.
b) Turn off the gas at the boiler isolation tap, fitted by the installer, adjacent to the appliance.
c) Remove the electrical connections (Two in the case of 45, 75 & 77) from the units fan assemble.
d) Disconnect the earth lead, HT cap and Lead from the ignition electrodes.
e) Remove the ‘Circlip’ securing the gas injector into the fan inlet bracket and extract the gas valve and
injector assembly. (Inspect and clean both the injector and gas valve assembly.)
f) Disassemble the burner by removing the six M6 nuts around the burner door, using a 10mm Spanner.
Pull the burner forward and remove from the heat exchanger. Gently put to one side.
g) Once access has been gained to the combustion chamber and front section of the heat exchanger,
visually inspect the heat exchanger coils.
It is usually only necessary to clean the front section of the heat exchanger. If server deposits are
found, the rear section of the heat exchanger should also be checked and cleaned, which will
necessitate the removal of the heat exchanger from the boiler.
If any coils appear to be significantly dis-coloured, then a blockage of either scale, magnetite, or
general system debris has occurred which will have allowed excessive overheating to have occurred
within the coil.
If dis-colouration has occurred, then specialist de-scaling of the heat exchanger will be required,
however, stress cracking may have occurred, and the heat exchanger may become porous following the
de-scale works.
h) If the heat exchanger has not suffered from dis-colouration, as ‘Item g’ above, then a Standard Service
can be undertaken. Using a natural bristled brush ONLY, remove the worst of the mineral/debris build
up.
With the use of the dissolved
the heat exchanger surface and leave for approximately 5 minutes. This will help to remove any
stubborn mineral deposits and clear the condensate drain connections. Finally brush the heat
exchanger whilst rinsing thoroughly with copious amounts of fresh water.
Chamber Cleaning Granules
BRUSH MUST NOT BE USED TO CLEAN THE HEAT EXCHANGER.
i) Following the cleaning of the Heat Exchangers, the condensate syphon must be flushed to ensure that
all mineral deposits/debris that has been washed from the heat exchanger surface is correctly
removed. Open the syphon cleaning point cap at the base of the boiler, with a suitable receptacle
directly below to collect the syphon contents. Safely dispose of the contents of the syphon. Replace
the receptacle below the cleaning point and poor 2 litres of clean tap water into the heat exchanger,
which will drain through the cleaning point. Refit the cleaning point cap and poor half a litre of clean
tap water into the heat exchanger to ensure the syphon is re-flooded. Check the cleaning point cap for
leaks.
j) Visually check the burner surface for signs of damage and debris build-up. Remove any debris build up
with compressed air. If excessive debris build-up is identified, the burner lance should be removed and
the inner metal surface should be washed and cleaned. A BRUSH, OF ANY KIND, MUST NOT BE USED TO
CLEAN THE BURNER SURFACE. If damage has occurred to the burner surface, the burner MUST be
replaced.
k) To ensure that the rectification circuit operates correctly the resistance between the burner and burner
door must be check with a multi-meter to ensure that it is less than 1 Ohm (<1 Ohm.)
l) Clean with abrasive material and inspect the ignition electrode. Replace if necessary. Adjust the spark
gap to 4mm.
ProCon Combustion Chamber Cleaning Granules
, spray the solution onto
ProCon Combustion
are available from MHG Heating Ltd Spares Department. A STEEL OR PVC
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m) Check the combustion fan blades for debris build-up. Remove any debris with a soft bristle brush or
preferably compressed air. DO NOT TOUCH, OR SPIN, THE FAN BLADES WITH YOUR FINGERS AS THIS
COULD AFFECT THE BALANCING OF THE FAN BLADES.
n) Re-fit the Burners, in the reverse order of dismantling, ensure that all electrical connections are
correctly and securely connected.
o) Inspect all water joints. Any joints found to be leaking MUST be replaced. It is also advisable when
replacing water joints to also change any adjacent joints at the same time.
p) Inspect all gas joints with a suitable leak detection method. Any joints found to be leaking MUST be
replaced. It is also advisable when replacing gas joints to also change any adjacent joints at the same
time.
q) Via the tappings on the boiler connector elbow or straight a flue gas recirculation check must be
undertaken when the boiler is operating on high and low fire modes.
r) Inspect and clean the condensate neutralising tank, replenishing the neutralising granules as required.
Granules available from MHG Heating Ltd Spares Department.
s) With the use of a suitable Flue Gas Analyser, check and adjust the combustion settings, as detailed in
Section 15.2.
t) Inspect the general condition of the flue system, including the termination, repair as necessary or
advise on any remedial action as required.
u) Following the satisfactory completion of the above service procedure, the internal Routine Service
Control Timer needs to be reset. Utilising the appliances fascia gain access to the Second Level
Parameters, as detailed in Section 14.2, and select Parameter Line H630 – Bit 6. using the + button,
adjust the value from 0 to 1 and press the INFO button to reset the Service Interval counter.
19.0 Weather Compensation Slope
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20.0 Optional System Controls.
If required the following controls can be applied to the ProCon range to enhance boiler and system
operational efficiency and longevity. (Further detailed guidance can be obtained from the respective
controller manuals.)
RVS63 Dual Zone Extension Controller.
This dual zone controller has the capability to control up to two independent CT/VT or a mixture of
both. The RVS63 dual zone controller communicates with the master boiler mounted RVS43 143
Cascade Manager via LPB, offering enhanced communication, zone and module temperature control. A
dedicated housing is also available to ease the installation process.
AVS75 Single Zone Extension Controller.
This single zone extension controller has the capability to control one CT/VT zone. The AVS75 single
zone controller communicates with the master boiler mounted RVS43 143 Cascade Manager via LPB,
offering enhanced communication, zone and module temperature control. A dedicated housing is also
available to ease the installation process.
QAA75 Modulating Full Function Room Unit.(One unit per zone.)
This modulating full function room unit offers the heating user full remote access to the all functions
that effect the provision of heat to the respective zone. The unit also displays information from all
attached temperature sensors. Boiler, Hot water and Outside.
QAA78 Wireless Modulating Full Function Room Unit.(One unit per zone.)
This modulating full function room unit offers the heating user full remote access to the all functions
that effect the provision of heat to the respective zone. The unit also displays information from all
attached temperature sensors. Boiler, Hot water and Outside.
QAA55 Modulating Limited Function Room Unit.(One unit per zone.)
This modulating limited function room unit offers the heating user reduced remote access to
operating mode and temperature functions that effect the provision of heat to the respective
zone.
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
[email protected] Web www.mhgheating.co.uk
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21.0 Internal Wiring
The internal wiring configurations of the ProCon differ dependent upon the model. H HS S and HM.
21.1 Internal Wiring Diagram 16 , 27 H HS & S
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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21.2 Internal Wiring Diagram 47 H & S
© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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21.3 Internal Wiring Diagram 75 & 77 H
© MHG Heating Ltd
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
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21.4 Internal Wiring Diagram 75 & 77 HM
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
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OCI420 not configured to operate with LMU64
OCI420 Configured. LPB Short Circuit / No Power.
OCI420 and LUM64 Not Compatible / LPB Address
inadmissible.
Boiler being controlled via LPB and required to be not
operating.
LED ON 5% OFF 20% ON 5% OFF 70%
Boiler being controlled via LPB and required to be operating.
22.0 HM Appliances and Slave units equipped with OCI420 Communication Clips.
Communication Operation Indications
The RED LED on the OCI420 communication clip mounted on the front of each LMU64 module
controller flashes to indicate the detected operational status of the module dictated by the LPB
communication from the RVS43 Cascade Manager.
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
[email protected] Web www.mhgheating.co.uk
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