Takagi T-KJr2U-IN Installation Manual And Owner's Manual page 26

2. Select one unit to be the "PARENT" unit.
3. "PARENT" unit
Locate the two banks of DIPswitches at the bottom left of the computer board of the unit that you
select to be the "PARENT" unit. Change DIPswitch No. 1 on the upper bank of DIPswitches to the ON
position. See the computer board diagram as shown in the next page. Do not change any DIPswitches
on any of the "CHILD" units.
4. Between the "PARENT" and the "CHILD-1" units
Connect the "PARENT" connector of the "PARENT" unit to the "1" connector of the "CHILD-1" unit.
5. Between the "CHILD-1" and the "CHILD-2" units
Connect the "2" connector of the "CHILD-1" unit to the "1" connector of the "CHILD-2" unit.
6. Between the "CHILD-2" and the "CHILD-3" units
Connect the "2" connector of the "CHILD-2" unit to the "1" connector of the "CHILD-3" unit.
7. Make sure the remote controller display the unit #. The numbering system automatically allocates the
unit # to each water heater in the Easy-Link system, in accordance with the table below.
(A) 510U (T-D2U) models Computer board
To change the DIPswitch
settings for the Easy-Link
system, locate the bank of
DIPswitches at the bottom
left of the computer board.
Do not adjust the upper
bank of DIPswitches.
Upper bank of DIPswitches
Lower bank of DIPswitches
(B) Basic diagram of connections between the Easy-Link System units.
Remote controller
PARENT unit
Connectors
Lower bank of
DIPswitches
Communica on cable
NOTE: The dark squares indicate the direction the DIPswitches should be set to.
Type of unit Unit # of easy-link
Parent
Child
CHILD-1 unit
Connectors
Lower bank of
DIPswitches
26
Page
Installation Manual
1
2, 3 and 4
CHILD-2 unit
Connectors Connectors
Lower bank of
DIPswitches
Installation
Easy-Link /
Multi-unit
connectors
are next to
the computer
board.
CHILD-3 unit
Lower bank of
DIPswitches