Where Virtualmin gets the value of IPCCommTimeout (31) from?

I’ve searched Virtualmin’s forum and could not find where Virtualmin gets IPCCommTimeout’s value of 31 from when setting up new virtual servers. I’ve found some discussions about the issue, unfortunately without clear answer to the question in subject: http://www.virtualmin.com/node/17218, http://www.virtualmin.com/node/7529

I’ve looked everywhere on my server and could not find this value of 31. I need to set default IPCCommTimeout to a much higher value for all my virtual servers. Whatever I change on php, fast-cgi settings new virtual servers always get created with IPCCommTimeout equal to 31 and I have to manually edit the value, which is not very much convenient. How and exactly where I can set default value for IPCCommTimeout?