so, this may seem like a bit of a weird question, but i like to get a move on things..i am heading out on holidays tomorrow out of town, but i received my new heater, have my swg and stuff to get my plumbing done..i'm thinking i'd like to get a jump before gas guy and electrician come in and get the new heater in place, swg in line and the plumbing to go with it. the stuff is in a pool shed with clear space in front of the heater (3 ft to work in) and space on either side (say 1 ft clearance on the left side between heater and wall) and all kinds of clearance aside from pipes on the right..

questions are:

a) would you wait until the gas and electrical guys are there before putting the new heater in place and plumbing it up. (i should note that he will need to remove the burner pipe to change the orifices to high altitude)

b) i would want a closed system to that my pool can still run on and off while i'm away..i don't want to muck with concerns about a new swg install while i'm away..but i'm thinking that there wouldn't be a problem running water through the heater and swg..they just both would be inactive.

thoughts?

thanks!