ULTRA 4 INSTRUCTION MANUAL 
 
120 
Relay Parameters 
All relay related parameters are prefixed with a 2**. 
The second digit of the three-figure parameter number denotes the relay 
number as follows: 
21* parameters for Relay 1   
22* parameters for Relay 2 
23* parameters for Relay 3 
24* parameters for Relay 4 
The third digit selects specific parameter for the setting of the relays, which 
can be selected individually and results in the following parameter numbers 
for each relay: 
Relay 1  210 to 219     
Relay 2  220 to 229 
Relay 3  230 to 239 
Relay 4  240 to 249 
P2n0 (“n” denotes the relay number in the following parameters) 
P2n0 - Relay Type 
This parameter defines what type each relay should be, see the table below 
for available options: 
Relay is not in use or programmed and the LED will 
always be off. 
Relay is programmed as an alarm relay, which will de-
energise ON, and energise OFF.  This will ensure an 
alarm is raised if the power fails to the unit. 
Relay is programmed as a pump relay, which will 
energise ON, and de-energise OFF. 
Relay is programmed as a control relay, which will 
energise ON, and de-energise OFF. 
Relay is programmed as a miscellaneous relay, which will 
energise ON, and de-energise OFF. 
When Ultra Wizard = 1 Level/Volume 
Relay is programmed as a general control relay, which 
will energise ON, and de-energise OFF.