11
IOM-T-482
2125
© 2021 Watts
Each thermostat and setpoint control uses the following
format for addressing:
Port:Bus:Thermostat Device
.
The snow melting control does not reports its address to
the 482. The Bus and Thermostat Device are visible on
the thermostat and setpoint control’s LCD display. This is
documented as the ‘tekmarNet Address’ in the thermostat
data brochure.
Port Number
The leading digit is the Port number. This determined by
the wiring connection that the thermostat is wired to on
the 482.
482 tN4 Bus 0 or b = 0
482 tN4 Bus 3 = 3
482 tN4 Bus 1 = 1
482 tN4 Bus 4 = 4
482 tN4 Bus 2 = 2
Bus Number
The second digit is the thermostat bus number. The bus
number is pre-determined by the wiring of the thermostat
to a boiler or mixing reset control water temperature bus.
In the event that no reset control is installed, the bus
number is 0.
The 406 tN4 bus numbering is dependent on the
WaterTemp and the Zone settings when configuring
the control.
WATERTEMP
ZONES
TANK BUS
MIX BUS
BOILER BUS
T
—
1
—
T + M
—
1
2
—
T + B
—
1
—
2
T + MB
Mix
1
*
3
T + MB
Boil
1
2
*
*When the 406 is configured in this manner, thermostats on
this bus are unable to communicate to the Gateway 482.
Thermostat Device Number
The third and fourth digits indicate the thermostat device
number. The thermostat device number is a two digit
number that ranges from 01 to 24 and can be determined
from the thermostat address. To determine the thermostat
address, please consult the data brochure for the
appropriate thermostat.
Example 1
A thermostat with bus and thermostat device number of
b:01 is wired to a model 400 controller boiler bus and in
turn is wired to the 482 on port 0. This address is 0101.
Example 2
A thermostat with bus and thermostat device number of
b:24 is wired to a model 423 controller boiler bus and in
turn is wired to the 482 on port 0. This address is 0424.
Example 3
A group of thermostats are wired together to create a
stand-alone network. A thermostat with thermostat device
number 15 is wired to the 482 on port 0. This address
is 0015.
CONTROL
BUS
BUS #
274
Boiler
1
275
Boiler
1
284
b
1
284
1
2
284
2
3
284
3
4
400
Boiler
1
401
Boiler
1
402
Mix
1
402
Boiler
2
403
Mix
1
CONTROL
BUS
BUS #
403
Boiler
2
420
Boiler
1
421
Mix
1
422
Mix1
1
422
Boiler
2
422
Mix2
2
423
Bus1
1
423
Bus2
2
423
Bus3
3
423
Boiler
4
THERMOSTAT (HEAT ONLY)
THERMOSTAT (HEAT-COOL)
SETPOINT CONTROLS
SNOW MELT
COMMAND
532
552
553
554
557
161
162
654
670
671
Room temperature
•
•
•
•
•
•
•
Floor temperature***
•
•
•
•
•
Mode
•
•
•
•
•
Heat setpoint
•
•
•
•
•
Cool setpoint
•
•
•
Slab setpoint*
•
•
•
•
•
Setpoint control setpoint
•
•
Fan
•
•
•
Relative humidity%
•
•
Maximum humidity setpoint
•
•
Minimum humidity setpoint
•
•
Outdoor temperature**
•
•
•
•
•
•
•
•
Melt/storm/setpoint enable
•
•
•
•
•
* Not supported by some home automation drivers
** Requires an outdoor sensor to be connected to a thermostat, snow melt or boiler control
*** Floor temperature available when a floor sensor is installed to an auxiliary sensor input
Home Automation Commands
Thermostat Addressing
