Installation Of Outdoor Temperature Sensor - Viessmann KW10 Installation, Start-Up And Service Instructions Manual

Electrical Connections

Installation of Outdoor Temperature Sensor

Temperature Resistance
ºF ºC
-50 -46 490813
-45 -43 405710
-40 -40 336606
-35 -37 280279
-30 -34 234196
-25 -32 196358
-20 -29 165180
-15 -26 139402
-10 -23 118018
-5 -21 100221
0 -18 85362
5 -15 72918
10 -12 62465
15 -9 53658
12
To mount outdoor temperature sensor,
experience has shown that the north or
north-west outside wall of the building
is the best location. If, however, the
boiler is intended to supply heat to the
south side of the building only (split
piping system), the sensor must be
mounted on the south side.
The sensor must be mounted so that
water cannot infiltrate the sensor
housing.
Care must be taken to install the
sensor where it will not be affected by
heat sources such as windows or
ventilation openings. The sensor should
be installed far enough above the
ground to prevent accidental damage
or tampering. Operating temperature
range is -60 to 160 °F / -50 to 70 °C.
Total cable length from boiler to sensor
should not exceed 1000 ft. / 300 m if
18 gage wire is used. This sensor cable
should not be placed in direct contact
with line voltage.
In addition, the outdoor sensor must
not be covered with mortar, stucco,
paint or any form of coating or siding.
If the outside wall is finished after the
sensor is installed, the sensor should
be removed and placed on the finished
wall.
Temperature Resistance
ºF ºC
20 -7 46218
25 -4 39913
30 -1 34558
35 2 29996
40 4 26099
45 7 22763
50 10 19900
55 13 17436
60 16 15311
65 18 13474
70 21 11883
75 24 10501
80 27 9299
85 29 8250
Installation
1.Remove cover
2.Mount housing base
opening
The outdoor temperature sensor
must be surface-mounted on exterior
cladding - not encased in any way by
outside façade.
3.Affix wires to connectors
Wires are interchangeable.
4.Slip cover
a snap.
Do not paint cover.
Electrical connections
5.Connect the other end of the
two-conductor cable to terminals "1"
and "2" of the "1 / 3" plug (boiler
sensor plug). Wires are
interchangeable.
6.The outdoor sensor can be checked
by measuring resistance in respect to
current outdoor temperature.
Disconnect outdoor sensor from
control. Using an Ohmmeter,
measure resistance between the
sensor cable terminals. The expected
values are as follows:
Temperature Resistance
ºF ºC
90 32 7334
95 35 6532
100 38 5828
105 41 5210
110 43 4665
115 46 4184
120 49 3760
125 52 3383
130 54 3050
135 57 2754
140 60 2490
145 63 2255
150 66 2045
155 68 1857
.
1
(cable inlet
2
to bottom).
3
.
4
in place and affix with
1
Temperature Resistance
ºF ºC
160 71 1689
165 74 1538
170 77 1403
175 79 1281
180 82 1172
185 85 1073
190 88 983
195 91 903
200 93 829
205 96 763
210 99 703
215 102 648
220 104 598
225 107 553