M
Markjones
Hi there,
I would like to flush my heating system with sentinel x400 for a day or so then drain till clear then finally fill with sentinel x100 inhibitor.
Thankfully I have a towel rad in the bathroom which has a bung i can simply pour the above treatment into and my drain point is outside in the back garden which is handy.
The procedure is well documented on the internet and there is also several vids on youtube which i have watched and want to proceed with doing this tomorrow.
As a final precaution before I started draining the system I thought id check the Vaillant maintenance manual which again describes the process as i expected from previous guides but i do however have the following questions.
1. Directly below the "filling the heating" instructions there is "Purging the heating system" which instructs you to run a "Purging test program". What is this and will i need to do it after reflling and bleeding the rads?
2. The manual does not say to switch off the power to the boiler which is something i thought was required when filling. it instead asks you to keep an eye on the LCD display till you reach 1-1.5 bar. There is also an analogue pressure gauge inside at the bottom right. Should I switch off the boiler and use this gauge before powering it on or can i have the power on when filling back up?
3. In this section it states the "automatic air vent" which is used to purge the air in the system independently during operation. Mine is open half a turn at the moment, how should it be and do i need to do anything with it when draining/filling the system?
Would gratefully appreciate any advice and answers to the above so that i can proceed.
Thanks,
Mark
I would like to flush my heating system with sentinel x400 for a day or so then drain till clear then finally fill with sentinel x100 inhibitor.
Thankfully I have a towel rad in the bathroom which has a bung i can simply pour the above treatment into and my drain point is outside in the back garden which is handy.
The procedure is well documented on the internet and there is also several vids on youtube which i have watched and want to proceed with doing this tomorrow.
As a final precaution before I started draining the system I thought id check the Vaillant maintenance manual which again describes the process as i expected from previous guides but i do however have the following questions.
1. Directly below the "filling the heating" instructions there is "Purging the heating system" which instructs you to run a "Purging test program". What is this and will i need to do it after reflling and bleeding the rads?
2. The manual does not say to switch off the power to the boiler which is something i thought was required when filling. it instead asks you to keep an eye on the LCD display till you reach 1-1.5 bar. There is also an analogue pressure gauge inside at the bottom right. Should I switch off the boiler and use this gauge before powering it on or can i have the power on when filling back up?
3. In this section it states the "automatic air vent" which is used to purge the air in the system independently during operation. Mine is open half a turn at the moment, how should it be and do i need to do anything with it when draining/filling the system?
Would gratefully appreciate any advice and answers to the above so that i can proceed.
Thanks,
Mark
