41
Page
Installation
Installation Manual
(B) Basic diagram of connections between the Easy-Link System units
PA
RENT
Communication cable
Connectors
Middle bank of
DIP switches
OFF
ON
1
1
1
2
2
2
PA
RENT
PA
RENT
PA
RENT
1
2
3
4
5
6
Connectors
Connectors
Connectors
OFF
ON
1
2
3
4
5
6
OFF
ON
1
2
3
4
5
6
Lower bank of
DIP switches
Lower bank of
DIP switches
Lower bank of
DIP switches
1
2
3
4
5
6
OFF
ON
PARENT UNIT
540P
CHILD UNIT
540
CHILD UNIT
540
CHILD UNIT
540
Built-in
or
remote
controller
Easy-Link
connector is
identified by
a label.
Middle bank of DIP switches
Upper bank of DIP switches
Lower bank of DIP switches
(A) 540P model computer board
WARNING
•
To change the DIP switch settings for the Easy-Link System, locate the
MIDDLE bank of DIP switches at the upper left of the 540P computer
board. (See diagrams below.)
•
DO NOT adjust any other DIP switches .
•
Turn off the power supply to the water heater before changing the DIP
switch settings.
•
Failure to observe this warning could result in carbon monoxide poisoning
or death.
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 on the next page (B).
9. Turn on power to the
“PARENT”
unit.
Turn on
“CHILD-1”
. When the (remote and/or built-in) 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) 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 above.
•
The dark squares indicate the correct position of the DIP switch.
•
Either a built-in controller or a remote controller is required for the Easy-Link System
for ease of usage and maintenance.
NOTICE
