© MHG Heating Ltd
35
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
Web www.mhgheating.co.uk
010711
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.
Parameter #
Description
Default
New Setting
Programmable Inputs
H618
Input control configuration
Input value interpretation affected by H622 or H623 Dependant
upon control requirement.
(4 is recommended.)
0
4. Predefined Temperature set point
5. Predefined Boiler Output
6. Low Loss Header Sensor
H622
Maximum Temperature Via X51 input 0-10 Volt
When H618 is set to 4
85 85
H623
Percentage level reached by input prior to boiler activation.
When H618 is set to 5
5 5
Programmable Outputs
H619
Relay designation for Output from Orange Plug
Left Terminal Live.
Right Terminal Neutral.
Output rated at 240 Volts 0.5 Amp
3
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
H620
Relay designation for Output from Clear Plug
Left Terminal Live.
Middle Terminal Neutral.
Output rated at 240 Volts 0.5 Amp
2
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
H621
Relay designation for Output from Clear Plug
Right Terminal Live.
Output rated at 240 Volts 0.5 Amp
0
0. Hydraulic Diagram Derived.
1. LPG SSOV Output.
2. Boiler Fault Output.
3. Boiler Operating Output.
4 -12 Non Supported Output.
