Rinnai New Zealand Limited
0800 746 624
2011 MECS: MSB-C1, C2 and C3
01-11
1
Manifold Electronic Control System (MECS)
Infinity units can be manifolded together (up to 25) by connecting them in parallel to enable
a greater hot water flow rate than is possible with a single unit. MECS is a totally integrated
system unique to Rinnai that links each Infinity unit in the system and will turn on each unit as
required.
The system is designed to ensure gas is not wasted and that an endless supply of hot water is
always available.
How it works
A master and sub-communication PCB is installed in the first unit and other subsequent units
have only the sub-communication PCB (slave cable) installed. The master communication PCB
receives information about flow rates from the PCB of each unit and balances the load on each
unit. Random selection of the units required to supply the flow demand means that all units
share the workload evenly.
All information is transmitted via communication cables to the slave units. The master control
also had an inbuilt fault detection system and will allocate a replacement unit should one fail.
MSB-C1, C2 and C3
This MECS system has the capability of joining up to 25 Infinity units and will replace the
previous Rinnai REU-SA2M/2S and REU-SA3M/3S MECS systems.
Description
Part number
Instruction book Description
REU-MSBM
MSB-C1
MESC master board for internal mounting inside Infinity to connect five
units
REU-MSBMB
MSB-C1
MECS master board for external mounting to connect five units
REU-MSBC1
MSB-C1
Slave cable to connect one additional unit
REU-MSBC2
MSB-C2
Joiner cable to daisy chain two MECS master boards together (up to a
maximum of five boards can be connected)
REU-MSBC3
MSB-C3
Slave cable as a spare part for the older REU-MSA2S MECS system
MECS
MSB-C1, MSB-C2,
MSB-C3
