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Easy-link system – John Wood Takagi - 710 User Manual

Page 14

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14

Easy-link System

The 710 can be connected with other heaters of the same
model with communication cables to work as a multiple
manifold system.
• The Easy-Link system can connect up to 4 units.
• A communication cable (gray color) comes with each

unit. The cables use 18 gauge wire and can be up to
76.2m (250 ft.) long all together.

You can manifold from 2 units to 4 units without a multi-sys-
tem controller. A 4-unit system has full automatic modulation
between 24,000 BTU/h and 960,000 BTU/h.

Gas

Cold

Hot

CAUTION

The Easy-Link system is limited to 4
units
. If you connect more than 4 units,
the first 4 units will work as part of the
Easy-Link system, but the other addi-
tional units will only work as individual
units.
The 710 cannot be linked with other
different tankless models in the Easy-
Link system
.

7-Seg LED

Left bank of
DIPswitches

Right bank of
DIPswitches

Do not touch the
Multi-System
connectors.

Easy-Link
connectors
are on each
unit’s com-
puter board.

To change the DIPswitch settings for the Easy-Link system, locate the left bank of
DIPswitches below the 7-seg LED. Do not adjust the right bank of DIPswitches.

Easy-Link Connection Procedures
1. Choose one of your units as the “PARENT” unit.
2. “The PARENT”: Locate the left bank of DIPswitches

to the lower of the 7-seg. LED on the computer board
of the 710 that you select to be the “PARENT” unit.
Change DIPswitch No. 8 to “ON”. Do not change any of
the DIPswitches on the “CHILD” units.

3. Between the “PARENT” and the “CHILD-1”: Connect

the “PARENT connector” of the “PARENT unit” to the “[1]
connector” of the “CHILD-1” unit.

4. Between the “CHILD-1” and the “CHILD-2”: Connect

the “[2] connector” of the “CHILD-1” unit to the “[1] con-
nector” of the "CHILD-2” unit.

5. Between the “CHILD-2” and the “CHILD-3”: Connect

the “[2] connector” of the “CHILD-2” unit to the “[1] con-
nector” of the “CHILD-3” unit.

6. Make sure the “7-seg LED” of all the units’ computer

boards display the unit #. The numbering system of
the 710 automatically allocates the unit # to each water
heater that is part of the Easy-Link system.

PARENT unit

Unit #: 1

CHILD units

Unit #: 2, 3 and 4

The dark squares indicate the direction the DIPswitches
should be set to.