Page 9 of 29 Revision 3.3 Feb 2021
ProReact EN Analogue Installation Manual
Document Ref. PACC-MAN
Pre-Alarm Temperatures
The ProReact EN Analogue LHD system has an in-built Pre-Alarm feature that enables users to receive an early notication of a temperature increase before
an alarm is triggered. Users can take advantage of this additional functionality in several of the available settings. Table 2 presents the available Pre-Alarm
temperatures for selected settings. See the Commissioning section for more information about setting up a Pre-Alarm temperature.
Application Temperatures
In order to minimise false alarms and ensure the ProReact EN Analogue LHD system responds as expected, it is very important to make sure that the
chosen control unit setting for selecting the alarm temperature is suitable for use given the typical and maximum application temperatures that are likely
to be expected during normal operation in the installed environment. Refer to Table 3 below for the recommended typical and maximum application
temperatures for a given alarm temperature selection.
VdS EN54-22:2015
+A1:2020 Approved
UL listed
(UQGS)
Available Controller Setting
Nominal Alarm
Temperature
Available Pre-Alarm
Temperature (s)
°C °C
3 ✗
Class A1 I/A2I 66 54
3 ✗
Class BI 80 54, 64
✗ 3
54 54 Not available
✗ 3
64 64 54
✗ 3
72 72 54, 64
✗ 3
79 79 54, 64, 71
✗ 3
86 86 54, 64, 71, 79
✗ 3
100 100 54, 64, 71, 79, 93
VdS EN54-22:2015
+A1:2020 Approved
UL listed
(UQGS)
Available Controller Setting
Recommended Typical
Application Temperature
Maximum Application
Temperature
°C °F °C °F
3 ✗
Class A1 I/A2I 25 77 50 122
3 ✗
Class BI 40 104 65 149
✗ 3
54 15 59 30 86
✗ 3
64 25 77
47 117
✗ 3
72 30 86
✗ 3
79 35 95
✗ 3
86 40 104
65 149
✗ 3
100 50 122
Table 2 - Available Pre-Alarm temperatures on the ProReact EN Analogue Composite Control Unit
Table 3: Recommended typical and maximum application temperatures dependent upon chosen control unit setting
Note: The recommended typical application temperatures and maximum application temperatures for the two VdS approved settings are given in
accordance with those in EN54-22:2015+A1:2020 section 4.1.2.
Note: 54ºC alarm or pre-alarm setting is for use in controlled ambient areas only. Specically when the overall sensor cable length is less than 75m (246ft)
ensure the humidity and temperature of the controller DO NOT exceed 75% and 30ºC respectively.