Aquathem 16204-12 Manuel d'installation - Page 11

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relief valve(s) and replace it with and end cap. Relocate

a vacuum relief valve to a position in the inlet piping

which is at a height of approximately three-fourths of the

elevation of the collectors above the pool.

Figure 1.

(A quicker alternate method is to first try to reverse the

end cap and the vacuum relief valve on the collector

array to see if this stops the bubbles in the return lines.

Sometimes the end cap is about 3/4 of the elevation of

the collectors and this is a lot quicker than cutting in a tee

in the supply pipe.)

MAINTENANCE

Winterizing Procedures

The solar collectors should drain automatically each time

the pump cycles off. There are no special requirements

for winterizing the solar collectors.

should be winterized as per your normal practice. In

southern parts of the country pool owners operate their

pools throughout the winter although light freezing condi-

tions may occur. The accepted procedure for avoiding

freezing of the pool piping and filtration system has been

to continuously circulate the water. When solar heaters

are used on a pool under these conditions, anti-freeze

precautions should be taken. Aquatherm Industries solar

collectors are not normally affected by light freezing.

However, in order to protect appurtenant components

such as end caps and pipe fittings and the collectors

against unusual or severe freezing conditions, one of the

following two procedures should be followed when freez-

ing weather is imminent.

1. Turn circulating system off and allow solar collectors

and piping to drain. Isolate collectors with gate or ball

valve in collector feed line and a check valve in the col-

lector return line. Switch the solar control to the bypass

position. The pool filtering system may then be turned

back on. When freezing conditions have passed, open

isolation valves and switch the solar control to "AUTO".

2. Switch the solar control to the "COLL" position so that

water circulates through the collector. When freezing con-

ditions have passed, switch the solar control to "AUTO".

THIS METHOD IS NOT RECOMMENDED WHERE

TEMPERATURE LEVELS MAY DROP SEVERELY.

Refer to

The pool piping

Annual Service

Collector Clamps:

In particularly hot climates, such as Arizona and

Southern Florida, the clamps which are used to connect

the solar collectors may become loose. If you notice

leaks around the hose couplings, use a nutdriver to tight-

en clamps. Do not tighten to the extent that the pipe col-

lapses or the clamp gears strip. In areas where unusu-

ally high stagnation temperatures are prevalent or where

abnormally high system pressures occur, use header

insert (Part #50055-1/-2).

COLLECTOR REPAIR

This method allows for an easy and permanent on site

repair of a collector by isolating the leaking riser tube.

Referring to the figure below, locate the tube to be isolat-

ed. (End tube has been shown for clarity.) Using a sharp

utility knife, very carefully cut away approximately 1" of

the tube at both headers. Drive a #10 - #12 sheet metal

screw, preferably stainless, into the hole in the header.

The screw must be between 1/2" and 3/4" long. DO NOT

OVERTIGHTEN! If the screw strips out, or if the repair

leaks, use a larger screw. This repair method will not

void the collector warranty.