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4-pipe applications
Application
Heating and cooling
4-pipe
4-pipe with
electric heater
4-pipe/
2-stage
4.8 Control outputs
4.8.1 Overview
Overview of control
outputs
A6V11545892_en--_c
In 4-pipe applications, the Comfort setpoint (w) is in the middle of the dead zone,
between the heating and cooling sequences.
The dead zone can be adjusted via P055.
If manual changeover is selected, either the cooling sequence or the heating
sequence is released. In this case, the Comfort setpoint is at the selected heating
or cooling sequence.
Comfort mode
Heating only
P010 = 1
and cooling
1)
Manual changeover, P001 = 3
W = setpoint in Comfort mode
W
= heating setpoint for Economy or Protection mode
HeatEco/Prot
W
= cooling setpoint for Economy or Protection mode
CoolEco/Prot
YE = electric heater sequence
Different control output signals are available and defined during commissioning
(see below).
Control
On/Off
output
Product
No.
RDG20..KN Y1, Y2, Y3
(3 x NO
RDG26..KN Q1, Q2
(2 x NO)
*)
NO: Normally open
1)
or heating
Cooling only
and cooling
P010 = 2
P010 = 2
PWM
3-position
Y1, Y2, Y3
Y1/Y3,
*
)
(3 x PWM)
Y2/Y4
(2 x
---
---
Functions
Control outputs
Economy/Protection
mode
1)
or heating
Heating and/or cooling
DC 0...10 V On/Off 3-
wire
---
Y1/Y3,
Y2/Y4
/
)
(2 x
Y10, Y20,
---
Y30
4
/
)
99 | 180
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