Operating Instructions and Installation Instructions

ULTRAMAX PB 65 - 120
56 L290 ©MHS Boilers 13/12/2010
Ultramax PB Supplementary Information For AGU2.500 Additional
Heating Zone Clip Installation Including LMU64 Controller
reprogramming. (Part Code. 96.38000-7003)
Following the installation of the AGU2.500 Additional Heating Zone (Mixing Zone) 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 AGU2.500 and OCI420 communication clips.
A number of parameters will require altering within the LMU64 controller from their standard default setting to
allow the AGU2.500 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
Heating Zone Without Mixing Valve and
Flow Sensor (QAD36)
H554. bit 5
Activation of fault indication of flow sensor
not installed
1
0 = Fault code indication
suppressed
Heating Zone With Mixing Valve and Flow
Sensor (QAD36)
No Alterations Required.
L AGU2.500
Appendix B
X52 must be connected to
X1:02 utilising the supplied
lead. (Discard the existing
blue plug.)