tekmar 363 Universal Reset Control Installation - Manual (Page 19)

19 of 40 Copyright © D 363 -
12/08
Zone Control Input
If an external tekmar Zone Control is used, connect the wire from the
Com Sen terminal on the Zone Control to the Com terminal (20) on the
363. Connect the
Zo Out terminal on the Zone Control to the 10K 1
terminal (21) on the 363.
Note: The wires from the Zone Control are polarity sensitive. The
communication does not operate correctly if the wires are reversed.
tekmar Net TM Device (tN1 / tN2)
A Room Temperature Unit (RTU) 062 or 063, or a Remote Display
Module (RDM) 040 may be connected to the
tekmar Net TM (tN1 / tN2)
input. Connect the Com terminal from the appropriate device to the
Com terminal (17) on the 363. Connect the tN1 or tN2 terminal from the
appropriate device to the
tN1 / tN2 terminal (19) on the 363.
Note: The wires from the RTU and the RDM are polarity sensitive. The
tN1 / tN2 device does not operate correctly if the wires are reversed.
10K 2 Sensor
Either a DHW Sensor 071 or a Storage Tank Sensor 071 can connect
to the
10K 2 input. Connect the two wires from the appropriate sensor
to the Com and 10K 2 terminals (17 and 18).
UnOccupied Switch
If an external timer (tekmar Timer 03 2) or switch is used, connect the
two wires from the external switch to the Com and UnO Sw terminals
(20 and 22). When these two terminals are shorted together, the
control registers an UnOccupied signal.
Note: The setback override in the schedule menu of the control overrides
any external signal that is present on the UnOccupied Switch terminals.
STEP FIVE TESTING THE WIRING
Each terminal block must be unplugged from its header on the control before power is applied for testing. To remove the terminal block,
pull straight down from the control.
The following tests are to be performed using standard testing practices and procedures and should only be carried out by properly
trained and experienced persons.
A good quality electrical test meter, capable of reading from at least 0 - 300
V (ac) and at least 0 - 2,000,000 Ohms, is essential to properly test the wiring
and sensors.
Test the Sensors
In order to test the sensors, the actual temperature at each sensor
location must be measured. A good quality digital thermometer with a
surface temperature probe is recommended for ease of use and accuracy.
Where a digital thermometer is not available, a spare sensor can be
strapped alongside the one to be tested and the readings compared. Test
the sensors according to the instructions in the Data Brochure D 070.
Test the Power Supply
Make sure exposed wires and bare terminals are not in contact with other
wires or grounded surfaces. Turn on the power and measure the voltage
between the N and L terminals (6 and 7) using an AC voltmeter, the
reading should be between 108 and 132 V (ac).
Test the Powered Inputs
Mixing Demand
If a mixing demand is used, measure the voltage between the Mix
Demand terminals (1 and 2). When the mixing demand device calls for
heat, you should measure between 20 and 260 V (ac) at the terminals.
When the mixing demand device is off, you should measure less
than 5 V (ac).
17 18
Com 10K
2
tN1/
tN2
19
Item Menu
UnOcc 1
°F
View
Heat
17 18
Com 10K
2
20 21
Com 10K
1
UnO
Sw
22
Timer Switch
Com
Sen Zo
Out
tekmar 363 Zone Control
20 21
10K
1
Com
Ω
V
V
6 7
N L
Power
108 to 132 V (ac)
Ω
Ω
V
23 24
Com Mix Boil
25 26
Out
Ω
V
V
1 2
Mix
Demand
20 to 260 V (ac)