There are 2 extra items you will need to install the dome heater.

1. 1.5" PVC "T" with a standard hose bib attached.

2. An adequate length of hose insulation to reach from
your hose bib to the desired location of your heater. This
soft foam insulation is available at your local hardware store
and is the same type used to insulate a 1" pipe from freezing.

Plumb the hose bib into your pool heater return line as
shown. Connect the female end of the hose provided to the
hose bib. Place the dome heater over the blower and cut
the hose to proper length. Allow enough length of hose to
insert the end of the hose into the hole in the side of Dome
Heater and an extra 7". Slip the end of the hose over the
copper tube and secure with the stainless steel worm clamp
provided. The other end of the hose connects through the
hole on the front of the dome heater and is attached the
same way as the previous hose connection. Once this length
has been determined, cut the hose and discard any left over
hose material. It's then routed under the cable anchor of the
dome and discharges directly into the pool. It's  a good idea
to allow the discharge hose to dangle in the water a couple
of feet. 

Once the unit is "plumbed" properly, install the foam insulat-
ion on the part of the hose that comes from the hose-bib to
the actual heater.

The dome heater is activated by turning on the hot water
supply at the hose bib and turning on your pool pump if it
is not already on. For safety reasons, keep small children
away from the discharge hose in the pool as the water may
at times be fairly warm.