Installation & Operation Manual
tN4 Gateway 482
Accessories
D 482
01/12
Replaces: 12/11
Introduction
The tekmarNet®4 Gateway 482 provides RS 232 serial communication between tekmarNet® Thermostats and third party
automation systems. The third party automation system is able to monitor and adjust the thermostat’s heating, cooling,
and ventilation fan settings. Through the use of third party device drivers written for this product, tekmarNet
®
systems are
fully integrated into home automation systems.
Features
tekmarNet®4 and tekmarNet®2 Compatible
•
CSA C US approved for US and Canada
•
Power
Tx
Rx
Drivers available for leading home automation
•
systems
On
Reporting Enable
Power-On State
Off
Input
115 V (ac)
Power Supply
tN4 Gateway 482
RS 232
1
2
Power
L
N
3
4
0
C0
tN4
Do not apply power
5
6
7
8
1
C1
2
tN4
C2
tN49C3
10
3
tN411C4
tN4 Bus 0
tN4 Bus 1
tN4 Bus 2
tN4 Bus 3
tN4 Bus 4
Designed and assembled in Canada by
tekmar Control Systems Ltd.
tektra 1017-02
Power: 115 V ±10% 60 Hz 45 mA
Caution: Signal wiring must be rated at least 300 V.
12
4
tN4
Test
RS 232
off
red
red
not testing
testing
testing paused
Date Code
H2051A
Input/Output
RS 232
Input/Output
tN4 Boiler
Bus 0
Input/Output
tN4
Bus 1
Input/Output
tN4
Bus 2
Input/Output
tN4
Bus 3
Input/Output
tN4
Bus 4
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Table of Contents
Wiring ............................................................................2
Wiring Symbols & Definitions .................................2
Caution ...................................................................2
Choosing a Location ...............................................2
Mounting .................................................................3
Electrical Drawings .............................................3-7
Wiring the tN4 Gateway ..........................................8
Cleaning ..................................................................8
Troubleshooting the Wiring .....................................9
Testing the Control ..................................................9
Sequence of Operation .................................................10
Before You Start ....................................................10
Controllable Equipment .........................................10
Other Equipment ................................................... 10
Incompatible Equipment ....................................... 10
LED Status Indicators ...........................................10
®
tekmarNet
Thermostat Addressing ......................................... 11
Technical Data .............................................................. 12
Limited Warranty ..........................................................12
Home Automation Protocol ................ 11
Wiring
Wiring Symbols
Do not apply power to these terminals.
Serious control damage will result.
Defi nitions
The following defined terms and symbols are used throughout this manual to bring attention to the presence of hazards
of various risk levels, or to important information concerning the life of the product.
Earth ground
– Caution: Refer to accompanying documents
– Caution: Refer to accompanying documents
INSTALLATION
CATEGORY II
– Local level appliances
Caution
Improper installation and operation of this control could
result in damage to the equipment and possibly even
personal injury or death. It is your responsibility to
ensure that this control is safely installed according to all
applicable codes and standards. This electronic control
is not intended for use as a primary limit control. Other
controls that are intended and certified as safety limits
must be placed into the control circuit. Do not attempt
to service the control. Refer to qualified personnel for
servicing. Apart from any field replaceable fuse(s) there
are no user serviceable parts. Attempting to do so voids
warranty and could result in damage to the equipment
and possibly even personal injury or death.
Choosing a Location
The location of the tN4 Gateway is important. To ensure proper wiring during rough in, select an appropriate location for
the control early in the construction process. Consider the following:
Do not expose the tN4 Gateway to temperatures beyond
•
32 to 122°F (0 to 50°C).
Keep dry. Avoid potential leakage onto the control.
•
Relative humidity ≤ 92% to 104°F (40°C), down to 50%
•
above 104°F (40°C).
Provide adequate ventilation.
•
Keep away from equipment, appliances or other sources
•
of electrical interference.
Mount the enclosure to a solid backing.
•
Provide easy access for wiring and viewing.
•
•
Mount approximately 5 feet (1.5 m) off the finished floor.
Mount near the zone managers, reset modules, tN4
•
thermostats, tN4 setpoint controls, and mixing expansion
modules. The total wire length of each tN4 bus cannot
exceed 5000 feet.
Each tN4 bus consists of a pair of wires (tN4 and C).
•
The tN4 Gateway can accept up to 5 tN4 buses.
•
Use a Category 5 cable up to or less than 150 feet (45
•
m) in length to connect the tN4 Gateway to the home
automation equipment.
© 2012 D 482 - 01/12 2 of 12
Mounting
Press down at the fingertip
grips on top of the front cover
and pull out and down.
Remove the safety dividers
from the wiring chamber by
pulling them straight out of
their grooves.
The control can be mounted on
a standard DIN rail. First remove
the control from its base and
then, using the hooks and spring
clip on the back of the control,
mount it onto the DIN rail. This
will be a popular option for those
who prefer to mount the control
inside a larger electrical panel.
Lift the front cover up and
away from the control.
Control release clip
Press the control release
clip on the base inside the
wiring chamber and slide
the control upwards.
The wiring can enter the bottom
or the back of the enclosure.
Knock-outs provided in the base
allow the wiring to be run in
conduit up to the enclosure. The
base also has holes that line up
with the mounting holes of most
common electrical boxes.
Loosen the screws at the
front of the wiring cover.
The control lifts up and
away from the base.
The wiring cover pulls straight
out from the wiring chamber.
13 Mounting holes
Control
release
clip
There are 10 conduit knock-outs at the back
and bottom of the wiring chamber.
The base is ready for mounting.
Included Parts
One tN4 Gateway 482
•
One RJ45 to DB9 Adapter
•
One Data Brochure D 482
•
Electrical Drawings
The electrical drawing examples on the following pages
show the 482 in common applications. These drawings
have a brief explanation of what is being operated in each
system. Choose the components in your system and use
the drawings as a guide to aid in wiring your system. These
are only concept drawings, not engineered drawings.
They are not intended to describe a complete system nor
any particular system. It is up to the system designer to
determine the necessary components for and configuration
One Job Record J 482
•
One Plastic Bag for Brochures
•
One Screwdriver
•
of the particular system being designed including additional
equipment, isolation relays (for loads greater than the
controls specified output ratings) and any safety devices,
which in the judgment of the designer are appropriate in
order to properly size, configure and design that system
and to ensure compliance with building and safety code
requirements.
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Electrical Application 482 E1
Description: tN4 network of tekmarNet® thermostats are connected to a tN4 Gateway 482.
On
Power
tN4 Gateway 482
RS 232
1
2
Power
L
N
3
4
0
C0
tN4
Do not apply power
5
6
7
8
1
C1
2
tN4
C2
tN49C3
10
3
tN411C4
Tx
Rx
tN4 Bus 0
tN4 Bus 1
tN4 Bus 2
tN4 Bus 3
tN4 Bus 4
12
4
tN4
Test
Designed and assembled in Canada by
tekmar Control Systems Ltd.
tektra 1017-02
Power: 115 V ±10% 60 Hz 45 mA
Caution: Signal wiring must be rated at least 300 V.
RS 232
Reporting Enable
Power-On State
off
not testing
red
testing
red
testing paused
Off
Date Code
H2051A
Category 5 Cable (< 150 feet, 45 m)
G
N
Adapter
L
To RS 232 Serial Port
To isolate relay,
To isolate relay,
cut jumper
tNt 542
One Stage Heat
/
993-02
Feb 2005
Lot 01
cut jumper
tNt 542
One Stage Heat
/
993-02
Feb 2005
Lot 01
Refer to Thermostat wiring brochures for complete wiring schematic.
Note: There is a limit of 24 devices per tN4 bus. Additional thermostats can be wired to the next available bus up to a
maximum of 96 devices per system.
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