Exhausto EXact2 VEX240 series, Basic Instructions

Page: 49 / 108

The inputs allow the connection of:
● Smoke detectors
● Fire thermostats (e.g. BT40, BT50 or BT70)
● BMS
● Fire control system
If an input is not used, a jumper must be used (see Electrical Installation Guide)
Menu 7.2 - Frost protection of HCW
Setting of frost pro-
tection
7.2 Frost protection HCW
Stop temperature >
Warning temp. >
Number of restarts >
Heat retention >
RPT-X fitted >
15°C
2,0K
2
22°C
No
Menu line Function Action
Stop tem-
perature
Selection of return water tem-
perature setting at which the
unit stops and the motor
valve fully opens. See table
below ● Select the required stop tem-
perature
The coldest temperature sensor
(TE-RPT or TE-RPT-X) will be uti-
lised. See the temperatures in
menu 2.6
Warning
tempera-
ture
Selection of return water tem-
perature setting at which air-
flow is reduced ● Select the temperature rela-
tive to the stop temperature
(ΔT) which will generate a
frost damage warning and re-
duce airflow
Number of
restarts
Up to five restarts may be se-
lected ● Select the maximum number
of restarts permitted in an
hour before an alarm is trig-
gered
Manual reset is activated by se-
lecting “0” for no. of restarts
Constant
tempera-
ture
In the case of a unit being
stopped, a selected "constant
heating temperature" is main-
tained to ensure that the
heating pipes stay warm. ● Select the required constant
heating temperature
RPT-X fit-
ted
State if RPT-X is fitted ● If an RPT-X is not required, it
may be removed
MVM/CP
time
Time before MVM valve
closes and circulation pump
stops when stop temp. or
number of restarts has been
exceeded. ● Options:
- 5 minutes
-
∞
(never)
3005167-2022-02-02
Starting up the unit for operation
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