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EASY-LINK SYSTEM
510U model only
The 510U model water heaters can be connected with other allowable heaters (see the table below) with
communication cables to work as a multiple-unit manifold system.
•
The built-in Easy-Link System allows up to 4 units to manifold together.
•
A communication cable (gray color) comes with each 510U model.
You can manifold from 2 to 4 units without the need for a multi-unit controller. A 4-unit system has full
automatic modulation between 15,000 BTU/h and 796,000 BTU/h.
-General-
Easy-Link connection
with allowable heaters
T-K3
T-K3-Pro
510 model
510U model (AT-D2U-IN/OS)*
510U model (AT-D3U-IN/OS)*
200 series
Gas In
Hot Out
Cold In
•
*If the 510U (AT-D2U-IN/OS) models and the 510U (AT-D3U-IN/OS) models are
incorporated in an Easy-Link Sytem with the other models in the table above,
change DIP switch No. 6 on the lower bank of all the 510U (AT-D2U-IN/OS) and
510U
(AT-D3U-IN/OS) computer boards to the “ON” position.
•
Turn off the power supply to the water heater before changing the DIP switch settings.
•
The Easy-Link System is limited to up to
4 units
. If you connect more than 4 units,
only the first 4 units will work as a part of the Easy-Link System. The other additional
units will not work as part of the system.
•
Only listed models on the table above can be combined together as an Easy-Link
System
.
These models cannot be combined together with other models not listed
on the table above.
•
A remote controller is not required for an Easy-Link System. However, it does provide
for more temperature options and ease of maintenance.
•
If a remote controller is used, the temperature on all the units in the system will auto-
matically be set to the same temperature that is set on the remote.
•
When a remote is used in an Easy-Link System, it must be connected to the parent unit.
OFF
ON
1 2 3 4 5 6
2 3 4 5
DIP switch setting on the 510U (AT-D2U-IN/OS) and 510U (AT-D3U-IN/OS)
(Lower bank of DIP switches)
The dark square indicates the correct DIP switch position.
NOTICE
-Easy-Link Connection Procedures-
1. Make sure the power to the heaters is turned off.
2. Verify the DIP switch set temperatures of all units within the system. Every water heater must be
set to the same set temperature.
If an optional remote controller (100209924/TM-RE42) is used, it
should be installed to the “PARENT” unit.
(See section B on the next page.) The remote will set the
temperature for the entire system.
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 DIP switches at the bottom left of the computer board of the unit that you
select to be the
“PARENT”
unit. Change DIP switch No. 1 on the
lower bank of DIP switches to the
ON position
. See the computer board diagram as shown on the next page. Do not change any DIP
switches 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.
Installation
Installation Manual
