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8 | Bosch 2H/2C/Hum Touch-Technology Thermostat
5 System setup and confi guration
5.1 Connection to the UPM
The UPM's ALARM COM terminal should be connected to R on the UPM board
(refer to unit manual for more information), and the ALARM OUT terminal should
be connected to the A terminal on the thermostat. The UPM must be confi gured as
described in Section 5.2.
5.2 Confi guration of the UPM
The ALARM DIP switch on the UPM has to be set to the ON position ("PULSE").
Simply push the right side of this switch, so it is down on the right side and up on the
left side.
Figure 3
5.3 Output chart
The thermostat is confi gurable for all systems. The confi guration directly aff ects the
outputs. Use the output chart to correctly confi gure and wire the thermostat to your
system.
Description
1st Cool
Heat/Cool
Y1, G
Heat Pump
Y1, G, O
(one compressor)
Heat Pump
Y1, G, O
(two compressors)
Emergency Heat
N/A
(heat pump only)
Table 2
* G not on for gas/oil systems
Data subject to change
UPM
LOCKOUT
4
2
RESET
R
Y
ALARM
CONT
PULSE
TEST
YES
NO
DISPLAY
ALR
OUTCOM
Y1
W/O/B
A
G
RH
W2
RC
Y2
C
AUX
Thermostat Back Plate
2nd Cool
1st Heat
2nd Heat
YI, Y2, G
W1, G*
W1, W2, G*
Y1, W2,
Y1, G, O
Y1, G, B
Y1, Y2,
Y1, Y2,
Y1, G, B
G, O
N/A
W2, G
5.4 Humidity output chart
(De)humidifi cation Setting
Humidifi cation
Only
Dehumidifi cation
Only
Table 3
When in dehumidifi cation mode and EAC is set to Cool-2, Y2 will energize
to extend cooling cycle. See Confi guration menu section
5.5 Confi guration and thermostat lock
During Confi guration Mode, certain settings are protected by a numeric code access
screen to prevent unintentional changes that could potentially damage the system or
create a dangerous condition.
Whenever changes are attempted to one of the critical settings, the unlock code
screen will appear:
The unlock code for these critical settings can be found during the power-up
sequence.
The large number (indicated by "98" in the diagram) is the code that will unlock
the desired confi guration setting. The smaller numbers (indicated by "93" and
"82" in the diagram) are codes used to lock and unlock your thermostat to prevent
tampering.
To view the default codes for your thermostat, remove the thermostat from the
sub base and, if using batteries, remove one battery for 10 seconds. Replacing the
batteries or reinstalling thermostat will cause the codes to display for approximately
5 seconds.
G, B
G, B
N/A
Figure 4
Installation, Operation & Application Manual
With Humidity Control Demand
No
N/A
Heat
W
Heat-Fan
W and/or G
Cool-No
G only
Cool-Fan
Y and/or G
Write your
codes here
Thermostat lock code
09.2016 | Bosch Thermotechnology Corp.
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