If you're going to cock up a boiler installation then a condensing combi or system boiler gives you most scope to do so with a choice of flue, PRD and condensate waste to get wrong. Here's one that got all 3 wrong.
First off the flue joints (it was over 2m long using a couple of extensions) were taped over with gaffer tape. Bad sign. Or rather, the only joint visible was gaffer-taped: the rest of the flue was boxed-in with no access (contra section <mumble> of the GSIUR).
Ripping off the boxing revealed that the entire flue was supported only on the studwork, had no fall (in either direction) and was sagging in the middle. The half-gallon of water that drenched my lower anatomy when I pried apart a couple of sections told me why it was sagging: the air duct had filled up with water which was just sitting there with nowhere to go.
 |
| Most of the deluge had gone by the time I'd got out of the way and got my camera out. |
By comparison the condensate waste was a model installation.
OK, so the un-solvent-welded solvent-weld fittings did come apart if one touched them, and it did go, unsupported, into a hole bodged into the WC multiquick and sealed with silicone but it could have worked.
Kind of.
Just about.
But the piece de resistance had to be the PRD. Coming out at the right hand side of the boiler ...
... it turns left ...
... then goes right ...
... up a bit then down again ...
... opens up from 15 to 22mm for a horizontal run under the bath ...
... back into 15mm, does a sudden dogleg for no apparent reason and out through the external wall ...
... to where? There's no sign of pipe in the hole on the outside of the wall. Presumably if/when the pressure relief valve opens it discharges into the cavity!
Amazingly the gas pipework seems to be all OK - up to size, joints soldered etc. Maybe that bit was done by the organ grinder himself?
