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Inground Spas
LTR20121002, Rev. A
Preparing for Your New Inground Spa
www.calspas.com
19
Gate/Slice Valves
The use of gate valves is recommended on all plumb-
ing lines (both suction and return lines). These valves
are used to contain the spa’s water in either the equip-
ment or the spa. This will assist in the pump priming
process and future servicing without needing to drain
the spa.
NOTE: When draining the spa to perform mainte-
nance, always close the gate valves prior to draining.
This will maintain the pumps prime.
Connecting Plumbing to Remote
Equipment
Connecting the plumbing from the spa to the equip-
ment pack must be performed in accordance to local
and city codes.
NOTE: Most codes require plumbing to be rigid PVC
schedule 40 or heavier in both above and below
ground installations. In most cases, the use of exible
PVC plumbing is acceptable when properly buried in
trenches.
Most water plumbing lines are 2” or larger and must
be schedule 40 or heavier PVC. When plumbing, mini-
mize the use of 90˚ elbows as much as possible. The
use of 45˚ elbows will increase the amount of jet pres-
sure you will have over the use of 90˚ elbows.
The plumbing on the spa shell is labeled by the factory
in the following manner:
Pump 1 Suction: 2” line that connects the spa lter
and bottom drain assembly to the front of pump 1.
Pump 1 Return: 2” line that connects the top of pump
1, through the equipment lter and heater back to
selected jets in the spa.
Pump 2 Suction: 2” line that connects the spa lter
and bottom drain assembly to the front of pump 2.
Pump 2 Return: 2” line that connects the top of pump
2 back to selected jets in the spa.
Ozone Line: 1” line that connects to a 1” exible line
extending off the bottom of the equipment pack lter
canister through an ozone injector (If ozone equipped)
and connected to ozone port on the spa.
Air Blower: 1 1/2” line that is plumbed out of the air
blower (located on the equipment pack) and extended
up 18” above the spas water level to prevent water
ooding the air blower.
Air Venturi: 1/2” line that is plumbed 18” above the
spa’s water level.
Topside Control Panel and Temp Sensor: 1” line that
connects to the bottom of the control box located on
the equipment pack.