This replaced a legacy 2hp bell type heyward spa blower with bonding wire. In my install I had to saw off the old blower than I installed and tapped with rubber mallet to snug up the check valve. The silencer blower then fits right onto the check valve and the fit is quite tight . ( it's not going anywhere). The connections were simple as my system is 220 so two hots and a ground wire. Way more quiet than the previous blower even before the bearings went. I used wire nuts and added just a bit of electrical tape to ensure no issues. I cut the old bonding wire off and secured it. ( in case anyone wanted to know)

This replaced a legacy 2hp bell type heyward spa blower with bonding wire. In my install I had to saw off the old blower than I installed and tapped with rubber mallet to snug up the check valve. The silencer blower then fits right onto the check valve and the fit is quite tight . ( it's not going anywhere). The connections were simple as my system is 220 so two hots and a ground wire. Way more quiet than the previous blower even before the bearings went. I used wire nuts and added just a bit of electrical tape to ensure no issues. I cut the old bonding wire off and secured it. ( in case anyone wanted to know)