TK-540P Installation Manual

34 Page
3. Select one unit to be the “PARENT” unit. The “PARENT” unit should be one of the end units.
4. “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lower bank of DIPswitches to the ON
position. See the computer board diagram as shown below. Do not change any DIPswitches on any
of the “CHILD” units.
5. 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
using the supplied linking cable.
6. 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.
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below(B).
9. Turn on power to the “PARENT” unit. The remote controller and/or temperature controller will display “1”.
Turn on “CHILD-1”. When the (remote and/or temperature) controller displays a number, turn on “CHILD-2”.
When the (remote and/or temperature) controller displays a number, turn on “CHILD-3”.
Make sure the (remote and/or temperature) controllers 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) 540 (T-H3) model computer board
(B) Basic diagram of connections between the Easy-Link System units
Installaon
Installaon Manual
NOTE: The dark squares indicate the direction the DIPswitches should be set to.
Type of unit Unit # of easy-link
Parent 1
Child 2, 3, or 4
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.
PARENT
Lower bank of DIPswitches
Upper bank of DIPswitches
Easy-Link /
Mul-Unit
connectors
are next to
the computer
board.
Temperature controller
or
Remote controller
PARENT unit CHILD-1unit
CHILD-2 unit CHILD-3 unit
PARENT
Communicaon cable
Connectors
Lower bank of
DIPswitches
OFF
ON
1
1
1
12
2
2
2
PARENT PARENT PARENT
1
2
3
4
5
6
Connectors Connectors Connectors
1
2
3
4
5
6
OFF
ON
OFF
ON
1
2
3
4
5
6
OFF
ON
1
2
3
4
5
6
Lower bank of
DIPswitches
Lower bank of
DIPswitches
Lower bank of
DIPswitches