Installed new tankless hot water heater with the help of Mark Greenwald. First we shut off the water and gas and then used a Sawsall with a hacksaw blade to cut the water and gas lines. A trashed hose from the yard was cut down to get the drain tap into the pickle barrel for draining the tank. After a few loads a short bucket was used to get lower than the top of the pickle barrel. Eventually even this slows down, blowing into the inlet pipe at the top gets the water out quicker.
The Aquastar 240 needs to be mounted to the wall. Concrete anchors were set into predrilled holes with epoxy pushed into the holes. These anchors hold the 2x4s to mount the unit to. The gas line cannot use flexi-hose, as the gas rate is too high. The lines had to be planned very carefully as adding elbows to make the match up will reduce the velocity of the gas as well.
When attaching the copper lines, be careful not to transmit too much heat into the unit while making the solder connections.
Once the unit is hooked up and the water and gas lines turned on, bleed the air from the line by backing off a connection near the unit or backing out a plug. At ½ PSI this is easy to do. The Aquastar will need about 2 amps of 110-volt power and will not turn on until the hot water lines flow.
Venting must be run separately from other units like furnaces and stoves. Single wall venting is fine and the unit comes with very good installation instructions including a video.
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