Vector TLC3-BCR-U Series Manual page 10

Input configuration
Parameter Description
CP 17 Changeover input:
0 = No external input
1 = Occupation sensor – Comfort / Economy
2 = Occupation sensor – Comfort / Off
3 = Heat / Cool change over, heat cool change if over limit
4 = High / Low limit supervision, outputs switch off if over limit
CP 18 Activation delay (Minutes) = the time the binary input needs to be
open before Economy/off mode is activated if CP17 = 1, 2.
Does not apply for heat cool changeover or high/low limit
CP 19 Heat – cool changeover limit heating if CP17 = 3
Low limit if CP17 = 4
CP 20 Heat – cool changeover limit cooling if CP17 = 3
High limit if CP17 = 4
Configuring the function of the external change over input

CP17 = 0 CO input not used
CP17 = 1 Switching Economy and
Comfort modes
CP17 = 2 Switching Energy Hold OFF
and Comfort modes
CP17 = 3 Heat – Cool changeover
CP17 = 4 High – Low limit
supervision
Configuring auto changeover input if CP17 = 3:

The auto changeover function automatically changes heating and cooling mode based on supply media
temperature or outdoor temperature. The difference between the two is in the values of the changeover limits
CP19 and CP20. See table below for recommended settings.
Heating and cooling may be as well changed by an open contact switched to signal ground. Note: all signal ground
levels of involved controllers must be the same in case more than one controller is switched.
Recommended settings for CP19 and CP20:

Change over mode CP17=3
Supply media
Outside temperature
Dry contact: Heating if contact closed
Dry contact: Cooling if contact closed
Change over mode CP17=4
Output off if outside range
Dry contact: OFF if contact closed
Dry contact: OFF if contact open
Doc: 70-00-0294, V3.1, Date: 20140508
Subject to alteration
Economy (unoccupied) and Comfort (occupied) modes are controlled
through an external contact by connecting X2 through a dry contact to
signal common. This function may be used together with key card
switches for hotels or motion detectors for offices.
Opening the X2 temperature input will force the unit into the OFF
operation mode. The operation mode cannot be overridden by using the
terminal. Connecting X2 input to GND returns control of the operation
mode to the terminal. This function may be used as window contact to
prevent loss of energy.
Switch heating and cooling mode based on supply media or outside
temperature or binary contact. See below for further details.
This may be used for a high temperature limit for floor heating or dew
point sensor input for cooling ceilings. Output will switch off if contact
opens.
Relation CP19 to CP20
CP19 > CP20
CP19 < CP20
CP19 > CP20
CP19 < CP20
Relation CP19 to CP20
CP19 < CP20
CP19 < CP20
CP19 < CP20
© Vector Controls GmbH, Switzerland
TLC3-BCR-U Thermostat
C C
ONTROL ONFIGURATION
Range
0...6
0...255 min
-40-60°C 16°C (61°F)
-40-60°C 28°C (83°F)
Example CP19 Example: CP20
25°C (77F) 18°C (64F)
15°C (59F) 25°C (77F)
25°C (77F) 15°C (59F)
15°C (59F) 25°C (77F)
Example CP19 Example: CP20
15°C (59F) 45°C (113F)
-40°C (-40F) 45°C (59F)
15°C (59F) 80°C (176F)
Default
0
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