Boiler flue pipe close to wall

[James Ascherl]

So my 6" single wall flue runs approximately 8' horizontally from my EKO40 before it enters the chimney. My issue is that it is right against the block wall and crosses a 3/4" copper water line, a 1/2" electrical conduit, and a 1/2" copper supply line. All three are right next to each other. I'm assuming that the flue will get hot enough to melt the wire casing inside the conduit. Any suggestions on how to protect them? I am thinking I could wedge a decent amount of fire rated insulation between the flue and the three components?
I also have 8 feet of 8" double walled pipe that I was planning on sliding over the 6" flue to help contain some additional heat.
I have attached pictures. The dark pipe is the old 3/4" main water line.

 

[brenndatomu]

Switch to doublewall...it is approved for 6" min clearance

 

[coaly]

What size flue does the manual require? Looks like an 8 inch outlet requiring 8 inch pipe and 8 inch minimum chimney diameter.

Single wall requires 18 inches clearance to combustibles (wire insulation), the 8 inch double wall you have requires 6 inches.

A metal shield of 24 ga. minimum thickness with 1 inch airspace also allows single wall pipe to be reduced by 66% or a minimum of 6 inch clearance.

 

[hobbyheater]

Its time to move the boiler closer to the chimney. If you have ever seen a chimney fire in Tin smoke pipe you would never run this system!