EXXFIRE 750CNF - Smoke Sensitivity

version 4.7.2 – July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 73
The functions and settings for each switch are outlined in Table 8. The switches can easily be set or
reset by sliding them to the desired location using a small insulated screwdriver.
DIP Switch
Function
SW1
Reserved (always set to 0)
SW2
Pre-Alarm, Alarm and Fire threshold
SW3
Pre-Alarm, Alarm and Fire threshold
SW4
Gas Release Delay Time
SW5
Gas Release Delay Time
SW6
Sequential/Parallel Gas Release
SW7
Flow Sensitivity Normal/Low
SW8
Reserved (always set to 0)
SW9
MAB
SW10
Door switch
M
Master system (1) or Slave system (0)
T
Terminating resistor RS485 bus
(1=connected / 0= not connected)
S
Number of Slave systems/Slave address
Table 8 Configuration switches
Smoke Sensitivity
Switches 2 and 3 are used to set the smoke sensitivity level. The default setting (normal sensitivity)
is in line with the nominal value applied to the Apollo XP95 optical detectors which are set at an
appropriate detection threshold to meet EN54-7. Higher sensitivity should only be selected for much
cleaner applications. Selection of a higher sensitivity threshold could cause a higher rate of false
alarms and should be avoided unless the environment is known to be reliably clean throughout the
year.
Using sensitivity “Low” is not CNPP approved.
NB See Note 2 in section 5
Switch 2
Switch 3
Sensitivity
0
0
Low
(no CNPP approval)
0
1
Normal
1
0
Enhanced (adv.)
1
1
Clean room
Table 9 Smoke Sensitivity