Operating Instructions and Installation Instructions
ULTRAMAX PB 65 - 120
55 L290 ©MHS Boilers 13/12/2010
Supplementary Information For AGU2.511 Communication Clip
Installation Including LMU64 Controller reprogramming.
(Part Code. 96.38000-7005)
Following the installation of the AGU2.5 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
PROG ▼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
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
85
85
H623
Maximum Temperature Via X51 input 0-20mA
5
85
H619
Relay designation for Output from Orange Plug
Left Terminal Live.
Right Terminal Neutral.
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.
H620
Relay designation for Output from Clear Plug
Left Terminal Live.
Middle Terminal Neutral.
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.
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.
L AGU
Appendix A
X52 must be connected to
X1:02 utilising the supplied
lead. (Discard the existing
blue plug.)