If you are reviewing this article, it may be because the panel is showing a FAULT in a zone when it should be showing FIRE.
We will describe how to adjust the load values in the panel zones. This diagram will help us navigate and understand the menus of the DMTECH panels; in this case, we can access the menu we will discuss.
05. ZONE CONSUMPTION
First, note the value shown on the initial menu of the box on the left; 05. ZONE CONSUMPTION. This menu will show the real and instantaneous consumption of the zone, in mA. Write down this value and continue with the zone load adjustments.
ZONE LOAD ADJUSTMENT
Enter and select a zone, e.g., zone 01
01.-ZONE LOAD ADJ. (5mA default value)
This refers to the resting consumption of the line. This option is used when the resistance values in the installation are not the default ones indicated by the manufacturer. For example, when a DMTECH panel has been installed replacing another existing one.
02.-FIRE LOAD ADJ. (21mA default value)
Allows differentiation between an alarm from a detector and one from a manual call point. This option refers to the alarm consumption of a detector. It will be necessary to increase or decrease the value for this differentiating option to function properly.
If when triggering an alarm on a detector, the panel shows fault instead of fire, it means the detector consumes more than the value displayed in this menu. Therefore, this value should be increased gradually (by 3 to 5mA each time) to approximate the real consumption value of those detectors.
03.-FIRE LOAD ADJ. 2 (40mA default value)
Similar to the previous one, this refers to the alarm consumption of a manual call point. It will be necessary to increase or decrease the value for this differentiating option to work.
Proceed as explained in the previous case.
04.-ZONE VERIFICATION
This setting allows choosing between 1, 2, or 3 verifications before the zone enters the "Fire" state. The default setting is 2 verifications.
- When configured with 1 verification, the panel enters fire state immediately after the fire alarm activation. This setting is recommended for zones with manual call points.
- When configured with 2 alarms. After the first activation, the panel resets the zone for 3 seconds and waits for a second response within the next 60 seconds. If there is a response during this period, the panel enters the fire condition. This setting is recommended for zones with detectors.
- When configured with up to 3 alarms. After the first activation, the panel resets the zone for 3 seconds and waits for a second response within the next 60 seconds. If there is a response during this period, the panel resets the zone again for 3 seconds and waits for a third activation within the next 60 seconds; if it occurs, the panel enters the fire state. This option could be valid for problematic areas with dirty or contaminated environments.