VTR 100B LITE Installation and Service manual v2

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Operation
Menu Level 1 Menu Level 2 Menu Level 3 Explanation
Functions
Preheater
Pre-Heater
Preheater Sp: -30 – 0°C)
P-band: 5°C
Output: Auto(xx%)/ Man
(Off/On)
Use this dialog frame to
configure pre-heater function.
Configure the setpoint setting.
Default value is dependant on
system type. In counter flow
units setpoint is not adjustable.
Set the proportional band (P-
band) range for PI controller.
Default value 5°C.
Set output to Auto or Man.
Default setting is Auto. Actual
controller output signal is
presented in auto mode.
Selecting Man, enables the user
to manually control output of the
preheater (On/Off).
Functions
Frost protection
Frost protection
Alarm limit: 7°C
Shows current set frost
protection alarm limit in °C for
the installed water coil.
Set Alarm limit in °C.
Default value: 7°C.
Functions
System curve
System curve
EF: 1–10
SF: 1–20
This function is to compensate
the flow values for different
system pressures.
See chapter 5.3
Functions
Fan control
Fan control
Airflow
System curve
%
Select the type of fan control
you prefer. Fan control by l/s,
m
3
/h or %
Fan control
Airflow
Airflow l/s
Nom
High
Low
EF
26
39
14
SF
26
39
14
Use this dialogue frame to set
the airflow in l/s. The airflow can
be set individually for each fan
EF: Extract fan,
SF: Supply fan
Set the airflow for EF and SF for
each step (Low, Nom, and High.
System curve shall only be
available in case a system with
that type of fan control is used.
Fan control
Airflow unit
Airflow unit
l/s / m
3
/h / %
Default value: l/s
Demand control
Demand control CO2 / RH
Setpoint 0 ppm/0% RH
P-Band 100 ppm/10%RH
I-Time OFF
It is possible control the indoor
air quality using RH (Relative
humidity) or CO2 (Carbon
dioxide) sensor/sensors. Default
setpoint setting is Off. (0%/
0ppm).
Both types should be able to use
at the same time, meaning 2 PI
controllers. When demand
control setpoint is configured,
fans set to auto mode and
regulate against the setpoint.
The fan symbol should have the
middle area empty, and the
outer and inner filled. It should
not be possible to change either.
212962 | v02