Christian Kohler
New Member
Hi,
I'm planning to install a Sanden Heat Pump Water Heater. These heat pumps do not have a tank, so I have to run about 20 ft of supply and return water line through a crawlspace from the outdoor unit to a laundry room where I'm planning to install a 120 gallon tank. The crawlspace is fairly shallow, and is only accessible from a small access hatch in the floor. I would like to use copper instead of PEX because I prefer to not have domestic hot water (could be up to 175F) run through plastic pipes. The manufacturer requires 1/2" pipes.
Given the small access hatch, it will be difficult to get 10 ft lengths of copper pipe into the crawlspace and make sweat connections in there. Would it be acceptable to use soft (annealed) type L copper coils for this 20 ft run in a crawlspace? Does soft copper have to be protected, or can it be hung from the floor joists, and wrapped in 1 1/2" foam pipe insulation? This way I could have one continuous run in the crawlspace and make all connections above the crawlspace.
Thanks
I'm planning to install a Sanden Heat Pump Water Heater. These heat pumps do not have a tank, so I have to run about 20 ft of supply and return water line through a crawlspace from the outdoor unit to a laundry room where I'm planning to install a 120 gallon tank. The crawlspace is fairly shallow, and is only accessible from a small access hatch in the floor. I would like to use copper instead of PEX because I prefer to not have domestic hot water (could be up to 175F) run through plastic pipes. The manufacturer requires 1/2" pipes.
Given the small access hatch, it will be difficult to get 10 ft lengths of copper pipe into the crawlspace and make sweat connections in there. Would it be acceptable to use soft (annealed) type L copper coils for this 20 ft run in a crawlspace? Does soft copper have to be protected, or can it be hung from the floor joists, and wrapped in 1 1/2" foam pipe insulation? This way I could have one continuous run in the crawlspace and make all connections above the crawlspace.
Thanks