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GAS LEAK DETECTOR INSTALLATION & USER GUIDE
5. RELAY CONTACTS
Note: If changing any jumper - power must be removed.
There are two relays rated up to 1 Amp at 24V DC/AC. The status of the relays is
jumper selectable.
Relay 1 at Con 6. Low-level alarm. Yellow LED on when in alarm.
Normally closed when JP4 link inserted, JP3 link removed, as shown on Fig. 1.
Normally open when JP3 link inserted, JP4 link removed, as shown on Fig. 1.
Latching (manual reset by push button located next to CON 7) - Not latching
(automatic reset) set by JP8 see Fig. 1. for link position.
Alarm threshold level is set by pot RV1 and can be set by putting a meter between
TP0 (negative) and TP2 (positive) (below RV1) and adjusting RV1 (scale is 0 to 5V
e.g. 2.5V is 50% of scale).
Delayed response time is set at JP1 by inserting the link in the required position.
Default settings are:
Position 1: No delay
Position 2 : 1 Minute
Position 3 : 5 Minutes
Position 4 : 10 Minutes
Note: If changing any jumper - power must be removed.
Relay 2 at Con 7. High-level alarm. Red LED on when in alarm.
Normally open/closed when JP5 link inserted, as shown on Fig.1.
Latching (manual reset by push button located next to CON 7) / Not latching
(automatic reset) set by JP7 see Fig. 1. for link position.
Alarm threshold level is set by pot RV2 and can be set by putting a meter between
TP0 (negative) and TP3 (positive) (below RV2) and adjusting RV2 (scale is 0 to 5V
e.g. 2.5V is 50% of scale).
Delayed response time is set at JP2 by inserting the link in the required position.
Position 1 No delay
Position 2 1 Minute
Position 3 5 Minutes
Position 4 10 Minutes
Note: If changing any jumper - power must be removed.
6. GAS DETECTION RANGE
Gas Detection Range and default settings vary with model and set up, see below for
sample settings.
Gas R404a R410
Range 0-1000 PPM 0-1000 PPM
5 EN1B-0014UK07 R0404