TCI-W13, TCI-W23 Universal Controller
A
UX
F
UNCTIONS
C
ONFIGURATION
Doc: 70-00-0365C, V2.0, 20220523
© Vector Controls GmbH, Switzerland
Page 20-22
Subject to alteration
Heating/cooling mode changeover
Parameter Description
Range
Default
Fu 20
Select heat/cool changeover input (0=function disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2T, 5= h/c status loop 1,
6= h/c status loop 2
0
–
6
0
Fu 21
Cooling activation delay (seconds)
0
–
1275s
300
Fu 22
Input limit 1
per input
20
Fu 23
Input limit 2
per input
40
➔
Switch heating/cooling state based on a universal input value. The input may be from a supply media (air or water)
or outdoor air temperature sensor. For supply media temperature we recommend switching to cooling at 16°C/61°F
and to heating at 28°C/83°F. For outdoor temperature we recommend switching to cooling at 28°C/83°F and to
heating at 16°C/61°F outdoor temperature. These recommendations are given as suggestions. The ideal settings may
be different on the actual project depending on climatic and system conditions.
➔
The change between heating and cooling is delayed to avoid unnecessary switching (FU21). Heat/cool status of one
control loop may also be determined by the heat/cool state of the other loop (FU20= 5 or 6). The control loop used to
determine the heat /cool state must be set to demand-based heating and cooling with (L23). Set limit 1 and limit 2 to
switch between heating and cooling with options below. Example: When Limit 2 is greater than Limit 1, switch heat to
cool at Limit 1, cool to heat at Limit 2. For binary open/close contact, open is a high value (100%), closed is a low
value (0%).
Cool
Mode
Mode
Heat
Input
Limit 2 > Limit 1
Heat
Cool
Input
Limit 1 > Limit 2
Limit
1
Limit
2
Limit
2
Limit
1
