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Rinnai New Zealand Limited

0800 746 624

2011 MECS: MSB-C1, C2 and C3

01-11

Manifold Electronic Control System (MECS)

Innity units can be manifolded together (up to 25) by connecting them in parallel to enable

a greater hot water ow rate than is possible with a single unit. MECS is a totally integrated

system unique to Rinnai that links each Innity 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 rst unit and other subsequent units

have only the sub-communication PCB (slave cable) installed. The master communication PCB

receives information about ow rates from the PCB of each unit and balances the load on each

unit. Random selection of the units required to supply the ow 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 Innity 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 Innity to connect ve

units

REU-MSBMB MSB-C1 MECS master board for external mounting to connect ve 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 ve 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

1 2 3 4 5 6 7

Résumé du contenu

Page 1 - MSB-C1, MSB-C2

Rinnai New Zealand Limited0800 746 6242011 MECS: MSB-C1, C2 and C301-111Manifold Electronic Control System (MECS)Innity units can be manifolded toge

Page 2

Rinnai New Zealand Limited0800 746 6242011 MECS: MSB-C1, C2 and C301-112MECSMSB-C1, MSB-C2, MSB-C3What to use whereOlder MECS system New installs sub

Page 3

Rinnai New Zealand Limited0800 746 6242011 MECS: MSB-C1, C2 and C301-113MECSMSB-C1, MSB-C2, MSB-C3Innity model compabilityCurrent model Previous mo

Page 4 - Installation Instructions

Kit ComponentsMSB-M (Pack A)(For wiring Units 1 and 2) Parts ListPart Qty Control BoardCommunication Cable A Communication Cable B Ca

Page 5 - For Units 2, 3, 4, and 5:

For Units 2, 3, 4, and 5: 5) Run the 4-pin connector of Communication Cable B (9.8 ft, 3 m cable) up through the cableaccess in the bottom of Unit 1’

Page 6

Kit ComponentsMSB-C2 (Pack C)(For wiring MSB units) Parts ListPart Qty MSB Communication cable Terminal connector 2 In

Page 7

For Unit 1: 1) Remove the screw from the sheet metal reinforcement plate located at the bottom of the water heater cabinet, and then use it to secure

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