Issue resolved
@All
Many thanks for your comments. I am glad to announce that problem resolved and operation by-pass started around 10.00am Sunday, ended at 13.00hrs and supply of warm water is restored without any loss into bonkered underground pipe.
A patch of hot water piple was laid over the floor in the side alley of the house and the old pipe was left buried there.
@Punk, thanks brother
@Proveribial_Slang, Yeah the Chimney is well place and draft checked
@riz, Yeah, thankfully the by-pass operation was over in just three hours
@Sharabi, I would never do that, or advise others about it. I paid 10K per month as gas bill last year and was told by several people like you to tamper the meter, but I did not do it. It is not only a crime, but a great sin of theft.