Takagi AT-KJr3U-IN Installation Manual And Owner's Manual page 33

7. 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.
8. Verify that all cables are connected like the diagram (B).
9. Turn on power to the "PARENT" unit.
Next, turn on "CHILD-1". When the controller* installed in "CHILD-1" unit displays a number, turn on
"CHILD-2".
When the controller* installed in the "CHILD-2" unit displays a number, turn on "CHILD-3".
Make sure the controller* installed in each child unit displays each unit number. (Refer to p. 48.)
The numbering system automatically allocates the unit number to each water heater in the Easy-Link
System, in accordance with the table on the right.
10. Set the water temperature using the controller* installed
in the "PARENT" unit. It will set the temperature for the
Easy-Link System. If a remote controller is installed to the
"PARENT" heater of 510 U Indoor (AT-D3U-IN), it will over-
ride the built-in controller.
*Built-in controller for indoor models, remote controller for outdoor models.
(A) 510U (AT-D3U-IN/OS) model Computer board
To change the DIP switch
settings for the Easy-Link
System, locate the bank of
DIP switches at the bottom
left of the computer board.
Do not adjust the upper
bank of DIP switches.
Upper bank of DIP switches
Lower bank of DIP switches
(B) Basic diagram of connections between the Easy-Link System units
Remote controller
PARENT unit
Connectors
Lower bank of
DIP switches
Communication cable
NOTE: The dark square indicates the correct
• A remote controller is not required for an Easy-Link System. However, it does
NOTICE
provide for more temperature options and ease of maintenance.
• If a remote controller is used, the temperature on all units in the system will
automatically be set to the same temperature that is set on the remote.
CHILD-1 unit
Connectors Connectors
Lower bank of
DIP switches
DIP switch position.
33
Page
Installation Manual
Type of unit Unit # of easy-link
Parent
Child
the computer
CHILD-2 unit CHILD-3 unit
Connectors
Lower bank of
DIP switches
Installation
1
2, 3, or 4
Easy-Link /
Multi-Unit
connectors
are next to
board.
Lower bank of
DIP switches