19
8 . Make sure the 7-Seg LED of all the units’ computer boards
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 .
Parent unit
Unit #: 1
Child units
Unit #: 2, 3 or 4
(A) T-D2-IN / 510 Computer board
Easy-Link System
“Online” LED
Left bank of
DIP switches
7-Seg . LED
Right bank of
DIP switches
Easy-Link connectors
are next to the
computer board .
To change the DIP switch settings for the Easy-Link System,
locate the bank of DIP switches at the right of the 7-Seg
LED .
Do not adjust the left bank of DIP switches
.
(B) Basic diagram of connections between the Easy-Link
System units .
Communication
cable
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
PARENT
unit
CHILD-1
unit
CHILD-2
unit
CHILD-3
unit
CAUTION
The dark squares indicate the direction the
DIP switches should be set to .
*
Note
:
•
A remote controller is not required for the Easy-Link
System .
•
If running the Easy-Link System without a remote
controller, please make sure the temperature settings on
ALL the units are set to the same settings . Otherwise,
the units will not operate properly .
•
If a remote controller is used, the temperature on all the
units in the system will automatically be set to the same
temperature that is set on the remote .
(C) Examples of incorrect settings and/or connections
CASE 1:
•
Unless you change DIP switch No . 1 of the “PARENT”
unit to the “ON” position, the system will not work as an
Easy-Link System . The units will operate as individual
units .
Communication
cable
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
PARENT
unit
CHILD-1
unit
Wrong
setting
Prohibited
Wrong DIP switch setting on the
“PARENT”
unit
CASE 2:
•
If you connect the “1" (or "2") connector of the “PARENT”
unit to the “PARENT" (or "1") connector of the “CHILD-1”
unit, the system will not work as an Easy-Link System .
The units will operate as individual units .
Communication
cable
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
PARENT
unit
CHILD-1
unit
Wrong
connection
Wrong
connection
OR
Communication
cable
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
Connectors
Right bank of
Dipswitches
OFF
ON
1 2 3 4 5 6
PARENT
1
2
PARENT
unit
CHILD-1
unit
Wrong
connection
Wrong
connection
Prohibited
Wrong connections between the
“PARENT”
unit and the
“CHILD-1”
unit
