Hi, Just had a new viessmann 100-w fitted." minor niggles".1.pipe has been terminated outside using 32mm pipe feeding into my rain water downpipe which goes into drain direct, using downpipe "t".The downpipe does not have a bend at the bottom, but fits into drain sleeve trap.The flexible condensate pipe from boiler to 32mm is inside garage, 4 foot straight drop to bend to outside.Is this ok,? I thought drainpipes where a "no no"? also, no outside lagging on 32mm.otherwise, excelent job.If outside pipe feezes, just pull flexi inside out of 32mm and into a bucket.