HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
24
13.0 Set-up for multiple Milborne boilers
installations
One of the many functions included in Milborne
500’s electronics allows for the installation of several
modules in series, to create boiler assemblies
having an overall power exceeding 100 kW.
This type of system requires one single Milborne
series 500 equipped with a Master control unit, while
all other Milborne 500 will have no control unit.
The cabling and setting of some electronic
components present on the system should be
carried out as follows:
13.1 Connect the cabling of the Boiler assemblies
making up the series as shown in figure 13.1
13.2 Every slave control unit making up the system
should be identifiable by the single Master control
unit by means of an address which is assigned
through specific settings on the two series of
switches, J10 and J17, located on each Slave in the
set.
Figure 13.1 - Milborne Multiple Installation
Milborne 502 multiple installation (n**1 Milborne 502 Master with n**2 Milborne 502 Slave
Milborne 502 Slave
Milborne 502 Master
Milborne 502 Slave
Each slave (one for each burner) needs to be
properly configured so that the Master controller can
identify their position in the sequence.
First the Slave boards need to be divided into 15
blocks. The Master control system can manage a
maximum of 15 blocks each made up of 4 Slave
boards each.
Eg, If 5 Slave controllers are connected to one
Master controller then 2 blocks are required. The
first containing 4 Slave controllers and the second
just 1.
To configure the addresses follow the next
procedure.
1.
Identify the block that each Slave is to be
assigned, eg block 1… 2… 3… etc.
2.
Identify the position that each Slave is to be
assigned in its chosen block, e.g. position 1…
2… 3 etc.
Note: Master controllers are all pre-set as follows;
501 - 502 Master controllers are always despatched
as position 1 and position 2 of block number 1.
502 Slave controllers always despatched as position
3 and position 4 of block number 1.
Therefore as part of the pre-commissioning checks
the settings of all Slave controller block and position
switches must be checked.
To assist the correct setting of the block and