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10
Start-up
Fill water
Check/control fill water chemistry
Conduct water quality testing prior to
IMPORTANT
installing the appliance. Various solutions
are available to adjust water quality.
Pool Water Chemistry
It is essential that the instructions in this section along with
the Ryznar Stability Index and/or Calcium Stability Index are
followed to prevent corrosion / erosion of the indirect heat
exchanger:
-
Always keep pH to within correct levels. The ideal pool pH
should be kept to within 7.4 to 7.6.
-
Under no circumstances should the pH fall below 7.2 or
rise above 7.8 (see FIG. 10-1). Check on a day-to-day basis.
Alter pool condition as necessary.
-
Ensure that chlorine levels are within the range
recommended by the chemical manufacturer and are in
accordance with the type of pool, for example; private,
hotel, school, or municipal.
-
If a bypass is fitted to the indirect heat exchanger circuit,
it is essential that any or all of the valves are correctly
positioned to allow the recommended pool water flow to pass
through the heat exchanger.
-
The system filter unit should be checked regularly, especially
sand filters (to detect sand and diatomaceous earth). Sand
filters, if working incorrectly, can allow sand to pass around
the pool circuit causing erosion of the pipework and heat
exchanger. Keep the pool free from debris such as leaves,
grass cuttings, etc. This foreign matter can cause decay and
increase pH.
-
It is essential that the correct amount of chlorine dosage is
added to the pool. To allow proper dispersion of the dose in
the pool water, distribute the chemicals to various areas of
the pool. Do not dose in one area only, as this will create
high acidic areas which can cause corrosion / erosion of the
pool equipment.
Figure 10-1 pH Scale
7.4 - 7.6
Installation & Operation Manual
-
Chlorinators must feed downstream of the boiler and
have an anti-siphoning device to prevent chemical backup
in the heater when the pump is shut off.
High
chemical
CAUTION
improperly adjusted feeders, chlorinators or
salt levels above 5000 ppm can cause rapid
corrosion to the heat exchanger.
Filling the System
The boiler is filled through the pressure reducing auto-fill
valve. The operating pressure of this system is 15 psi between
the heater and the indirect heat exchanger. There are no
adjustments necessary to the fill valve cartridge (factory set).
The expansion tank is set at 20 psi. It is necessary to check
the pressure of the expansion tank when annual maintenance
is performed. The boiler system operates off a city or potable
water system which feeds a closed loop system. A hard line is
piped from the potable water supply to the pressure reducing
valve. This water is to remain on at all times when the system
is in operation.
Pressure Reducing Valve
The valve is equipped with a fast-fill feature that can be used to
override normal operation when filling and purging the system.
To activate fast-fill, push and hold down the fast-fill knob on
top of the cartridge as shown in FIG. 10-2.
Relieve air from the system through operation of the pressure
relief valve by pulling the lever on top of the valve, causing it
to open.
Figure 10-2 Pressure Reducing Auto-Fill Valve
Freeze protection
Ethylene glycol is toxic, DO NOT use as
⚠WARNING
your freeze protection. Ethylene glycol has a
sweet aroma which children and pets could
mistake as food and ingest; leading to death.
1.
Use glycol only if needed for freeze protection.
2.
Propylene glycol is the recommended freeze protection.
3.
Make sure to flush the boiler system before adding glycol.
concentrations
from
PUSH CAP DOWN TO
ACTIVATE FAST FILL
53
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