LG Gen4 DHW settings

[HughF]

I’ve been commissioning an LG gen4 and I’m after some help from the forum when it comes to DHW settings and scheduling.

 

We’re on software 3.06.9, if that makes any difference. I’d welcome clarification on the following:

 

Tank setting 1 -> ‘min temp’: is this the hysteresis for restart, or is this the minimum temp that the user can set the DHW to?

Tank setting 1 -> ‘Comp. Limit temp’: is this the maximum LWT allowed when in DHW mode, irrespective of deltaT and or target tank temp?

 

‘DHW set temp’: I assume this defines the allowed values for the user when changing the DHW setpoint?

 

Basically the issue is, we’re not getting a DHW recharge cycle even though the tank temp has dropped to something I’d expect it to restart at. Setpoint is 53deg and even at 34deg we weren’t getting a restart.

 

 

[HughF]

OK, update… Resetting the settings inside ‘tank setting 1’ to defaults of 5 and 55 has resulted in a DHW recharge. Is this ‘min temp’ value subtracted from the setpoint to give the restart temperature?

 

Onto scheduling… do I need to specify an off period between my on periods? 

[HughF]

Yes, yes you do…..

 

Schedules all sorted. Onto the next issue.