In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
How to cold start my furnace to avoid cracks? Oil, forced hot water.
To avoid boiler cracks Is there a special way I need to start my house oil furnace from cold start, about 60 deg F. It's operating fine now , but I'm thinking if loose power from ice storm and it cools to 60 deg.
I'm thinking thermal shock/stress to it's cast iron during heat up.
In past I just turned it on, but now I'm wondering.
Forced hot water
60 year old National Sunray IV , boiler # 5-19A/O/OP , rated 128k BTU/hr 1.6 gal/hr
Has original burner, National -US model NB2-K2, firing rate .85-2.0 gal/hr, 1.1 gal/hr nozzle
Chimney is most 4 stories from cellar floor to top of it
Tankless coil in water jacket
Cast iron baseboards, 1ft tall .