HCA Series Installation Manual
Page 44 of 58
V2.15
5.4.3 Water Releasing
There is both a single interlock and double interlock water releasing programming option. The single
interlock release has similar behavior to the agent release programming options. The difference between
single interlock and agent releasing is that zone 1 is configured as a supervisory zone for single interlock
vs. an abort function for agent releasing. Note also that there is no pre-discharge delay for a cross alarm
of zones 2 and 3 with water releasing as there is for agent releasing.
The double interlock zone uses zone 1 as the interlock switch alarm zone. The interlock switch is
required to be active along with a cross alarm of zones 2 and 3, or the manual release zone 4 in order for
there to be a release.
See figure 5.3 for the water releasing truth table indicating what zones must be active in order for there to
be a water release.
To set up the panel for the water releasing select option 4 from the main menu.
PROGRAMMING MENU
4-Releasing, Nxt
Select 4 from the main menu for general releasing.
Select the Water Release mode.
Releasing Option
Water Release
Use the down arrow to scroll through None, Water Release and
Agent Release options. Once the desired release option is shown
press the enter key to accept the option.
Select either single or double pre-action mode for the water release option.
Pre-Action Mode
Single Interlock
Use the down arrow to scroll through Single Interlock and Double
Interlock. Once the desired interlock mode is shown press enter
key to accept the option.
Select whether the Solenoid output should be automatically shut down after the shutdown timer expires.
Auto Shutdown
Solenoid(Y/N): Y
Choose the auto shutdown solenoid option. Select Y for auto shutdown
solenoid feature. Select N to leave solenoid active until system reset.
Press enter to accept option displayed on the screen. Default is Y (Yes).
If you select Y for Auto Shutdown Solenoid, the screen below will display to select the auto shutdown
time.
Solenoid Shutdwn
Time: 030
Select solenoid delay time. Default is 30 seconds. Possible range is
10-600 seconds.
Finally, select the output cadence pattern for NACs 2, 3 and 4. NAC 1 is always the continuous pattern.
Release Pattern
Continuous
Use down arrow to scroll through cadence patterns for NACs 2, 3 and 4
with the releasing function. Once desired cadence is shown press the
enter key to accept cadence option.
