wirsbo DuoMix 201, Installation Instructions Manual

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DuoMix Installation Handbook 7
Boiler Return Sensor ( BRet)
Connect the two wires from the Boiler Return Sensor 071 to terminals Com — BRet (24
and 25). The Boiler Return Sensor measures the boiler return water temperature.
Zone Control Input (
Zo 1 & Zo 2)
If a tekmar Zone Control is used on the mixing 1 section, connect the wire from the
Com
terminal on the Zone Control to terminal
Com (21) on the 201. Connect the wire from
the Zo Out terminal on the Zone Control to terminal Zo 1 / Ind (22) on the 201.
If a tekmar Zone Control is used on the mixing 2 section, connect the wire from the Com
terminal on the Zone Control to terminal
Com (17) on the 201. Connect the wire from
the
Zo Out terminal on the Zone Control to terminal Zo 2 / I/S (18) on the 201.
Note The wires from the Zone Control are polarity sensitive. The system will not
operate if the wires are reversed.
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2
tN2
Zo 2
/I/S
Com
Sup2 Sup1
Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2
tN2
Zo 2
/I/S
Com
Sup2 Sup1
Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2 tN2 Zo 2
/I/S
Com Sup2 Sup1 Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2 tN2 Zo 2
/I/S
Com Sup2 Sup1 Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2
tN2
Zo 2
/I/S
Com
Sup2 Sup1
Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2 tN2 Zo 2
/I/S
Com Sup2 Sup1 Com
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2
tN2
Zo 2
/I/S
Com Sup2 Sup1 Com
Indoor Sensors (Zo 1 / Ind & Zo 2 /I/S)
Indoor Sensors provide indoor temperature feedback to the control.
If an indoor sensor is used on the mixing 1 section, connect the two wires from the Indoor
Sensor to the
Com – Zo 1/ Ind (21 and 22) terminals on the control.
If an indoor sensor is used on the mixing 2 loop, connect the two wires from the Indoor Sensor
to the
Com – Zo 12/ I/S (17 and 18) terminals on the control.
Slab Sensor (Zo 2 /I/S)
Slab Sensor measures the slab temperature.
If the mixing 2 section is used for snowmelting, connect the two wires from the Slab
Sensor to the
Com – Zo 2/ I/S (17 and 18) terminals on the control.
Slab Return Sensor 2 (Ret2)
Slab Return Sensor measures the return glycol temperature from the slab.
If the mixing 2 section is used for snowmelting, connect the two wires from the Slab
Return Sensor to the
Com – Ret2 (17 and 19) terminals on the control.
tN2 Connection (Snow Melt Enable Kit A3040039 Remote Display Module
040)
Connect the first wire from the Com (24) terminal on the 201 to the Com terminal on the
040 or the Snow Melt Enable unit. Connect the second wire from the tN2 (27) terminal
on the control to the
tN2 terminal on the 040 or the Snow Melt Enable Module.
STEP FIVE TESTING THE WIRING
Each terminal block must be unplugged from its header on the control before power
is applied for testing. Pull straight down to unplug the terminal block.
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
The actual temperature must be measured with either a good quality digital thermometer,
or if a thermometer is not available, a second sensor can be placed alongside the one to
be tested and the readings compared.
First measure the temperature using the thermometer and then measure the resistance
of the sensor at the control. The wires from the sensor must not be connected to the control
while the test is performed. Using the chart below, estimate the temperature measured by
the sensor. The sensor and thermometer readings should be close. If the test meter reads
a very high resistance, there may be a broken wire, a poor wiring connection or a defective
sensor. If the resistance is very low, the wiring may be shorted, there may be moisture in
the sensor or the sensor may be defective. To test for a defective sensor, measure the
resistance directly at the sensor location with the wires disconnected.
Do not apply voltage to a sensor at any time as damage to the sensor may result.
20
Com
17 18
Zo 1
/ Ind
21 22 24
BRet
23 25
Out
26 27 19
Ret2
tN2
Zo 2
/I/S
Com
Sup2 Sup1
Com
5
6 7 9 8
10 11
N N N
Mix2
Pmp
Var2
Pmp
Boiler
Enable
Ω
Ω