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G'day!

I usually work on commericial equipment, but once in a while for friends and family I look at residential stuff (pretty common for everyone I'm sure :) ). Anyways, I saw something today,...

Yes, I'm studying for a test. :) The problem is... the above questions are from old exams, but there is no listed reference materials. I'm not too familiar with ammonia/absorption systems and there...

Hello!

I've got some practice test questions, which I can't find the answers to anywhere! Any help would be appreciated.

1. How are rink lines connected to a header?
2. Where and under what...

Hello All!

I was wondering if anyone had the exact requirements for hanger spacing and threaded rod sizes for copper tubing. I'm studying for the C of Q and could use all the help I can get....