aquatherm AT800 Installationshandbuch - Seite 5

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Plumbing & Water Connections - 2" Threaded Male

For a simple pool only or spa only, install the plumbing piping as shown:

Connections from factory are 2" threaded male pipe, requiring 2 inch female adaptors, see diagram.

Use teflon tape and pipe sealer. Tighten hand tight plus 1/2 snug tight with pliers.

Water IN on the RIGHT, Water OUT on the LEFT,

PLUMB AFTER the FILTER & BEFORE any CHLORINATORS or CHEMICAL FEEDERS

Be sure to install a CHECK VALVE & CHEMICAL TRAP LOOP as shown. The loop should be at least

6 to 8 inches above the chlorinator/feeder top to prevent chlorine backup into the heater when the

water pump is off. Install a 2# check valve on the heater side of the loop as shown above to

prevent chlorine from damaging it. All feeders should be installed at the same or below the

heater piping elevation to prevent chemical back up into the heater.

DO NOT : Install the heater down stream from any chemical feeders.

DO NOT : Allow chemical feeders on the suction side of the water pump.

DO NOT : Allow any chemicals or chlorine to be fed through the skimmer.

DO NOT : Allow the pool water pH to go below 7.4. DO NOT allow the alkalinity to go below 90 p.p.m.

DO NOT : Allow the chlorine to go above 5 p.p.m. for extended periods. Chemical damage is not covered

by and may void warranty.

Freezing Condition Plumbing

In areas where extended freezing conditions exist, the heater must be

plumbed as shown so it can be winterized. Water left inside the heater

will freeze and cause damage. Plumb in a union, shut off valve, a boiler

drain and a air petcock valve on the water in and water out lines as

shown here. Isolate the heater with the shut off valves and use pressur-

ized air to clear the heat exchanger of all water. In areas where freezing

conditions are temporary, the water pump should be set to run 24 hours

to prevent freezing. Freeze damage will void warranty.

Bypass for Flow Rates Over 70 G.P.M.

Typically the automatic internal water by-

pass can handle up to a 1.5 H.P. water

pump or 70 G.P.M. If the water pump ex-

ceeds 1.5 H.P. then install either of the op-

tional bypasses as shown below.

Ball Valve or

Jandy™ 3-Way

The installation of a flow meter on the WATER

OUT line is suggested. Adjust the bypass to

divert a minimum of 40 to 50 G.P. M. through

the heater. Flow meters should be installed per

the manufacturers instructions.

See page 6 for pool/spa

plumbing diagrams.

Multi Unit Water Connections

Plumb multiple units as shown below. Use flow

meters on each WATER OUT line if two or more

units are plumbed together.

Use ball valves to balance the water flow through each

unit. Using T's, caps and a minimum 6 inch pipe exten-

sion on the plumbing manifold will help equalize the

water flow better than 90˚'s. Flow meters should be in-

stalled per the manufacturers instructions.

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