HTP PHR199-55C - Manual (Page 8)

8
LP- 325 REV. 3.21.14
E. APPLIANCE SYSTEM

Thoroughly flush the system (without appliance connected) to
remove sediment. The appliance can be damaged by build-up or
corrosion due to sediment. HTP recommends a suction strainer
in all systems.

Do not use petroleum-based cleaning or sealing compounds in
the system. Gaskets and seals in the system may be damaged,
possibly resulting in substantial property damage.

D o not use “homemade cures” or “patent medicines”. Substantial
property damage, damage to the appliance, and/or serious
personal injury may result.

Continual fresh make-up water will reduce appliance life. Mineral
buildup in the heat exchanger reduces heat transfer, overheats
the stainless steel heat exchanger, and causes failure. Addition
of oxygen from make-up water can cause internal corrosion in
system components. Leaks in the appliance or piping must be
repaired at once.
F. CHECK/CONTROL HYDRONIC WATER CHEMISTRY
Water pH between 6.0 and 8.0
1. Maintain appliance water pH between 6.0 and 8.0. Check with litmus paper or have chemically analyzed by a water treatment
company.
2. If the pH differs from above, consult local a water treatment company for treatment required.
Hardness less than 7 grains
Consult local water treatment companies in circumstances of unusually hard water (above 7 grains hardness).
Chlorine concentration less than 100 ppm
1. Filling with chlorinated fresh water should be acceptable since drinking water chlorine levels are typically less than 5 ppm.
2. Do not use the appliance to directly heat swimming pool or spa water.
3. Do not fill appliance or operate with water containing chlorine in excess of 100 ppm.