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installation, the only remedy is to dig that area out and proceed correctly. Slight bulging has only visual effects, while
not affecting the structure of the spa. A string line is very useful in determining the straightness of the spa walls during
the backfilling process.
Step 8. PLUMBING
When the water and backfill levels are close to reaching any of the spa inlets, stop the filling and backfilling
process and run the plumbing pipes along the excavation cavity and route them to the equipment site. After the
plumbing is installed, complete the filling and backfilling process.
A basic swimming spa circulation system is relatively simple in operation. Water in the spa is drawn through
the main drain and skimmer to the pump, which pushes it through the filter back to the spa via the returns. Refer to
Figure 5 for a basic filtering system diagram. See your contractor for more advanced filtering systems that may include
sanitizers, jets, blowers, automatic spa cleaners, etc. Viking Spas recommends the use of schedule 40, 2" plumbing on
most spas. Visually inspect all plumbing installed at the factory upon the delivery of the spa and during the backfill
process.
To prevent accidentally draining the spa, Viking Spas suggests placing the equipment at or slightly above the
elevation of the spa and plumbing the spa so that the water leaves the spa via the skimmer and not the main drain.
You should not place the equipment higher than 6" above spa level. The equipment becomes less efficient the greater
the distance away from the spa. If the equipment is placed below the water level, shut off valves must be installed to
prevent accidental siphoning of the spa. Pipes may now be glued at the equipment pad and circulation of the filtering
system may begin. Check all connections for leaks and proper circulation before covering them. Local building codes
may require pressure testing of the plumbing system before the installation is complete.
Step 9. ELECTRICAL
If the installer or homeowner is not qualified to do electrical work, an electrician should be hired and a building
official should inspect the work. All electrical work should be done to National Electric Code specifications and any
local codes. Viking Spas will not be held responsible for any electrical work.
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