HTP EL-80 - Boiler Gas Valve; Part 8 - Start-Up Preparation; Check; Control Water Chemistry

LP-293 Rev. 9.24.15
42
Figure 31 - Gas Valve
Part 8 - Start-Up Preparation
Do not do a gas conversion on this boiler without an
ocially approved conversion kit and instructions
supplied by HTP. Failure to use a conversion kit
when converting the boiler to re on Natural or
Propane gas will result in extremely dangerous
burner operation, leading to re, explosion, severe
personal injury, or death.
Strain on the gas valve and ttings may result in
vibration, premature component failure and gas
leakage, and result in re, explosion, property
damage, severe personal injury, or death.
Adjustments to the throttle screw or oset may
only be made by a qualied gas technician using
a calibrated combustion analyzer capable of
measuring CO2 and CO. Failure to follow this
instruction could result in re, explosion, property
damage, severe personal injury, or death.
C. Boiler Gas Valve
A. Check / Control Water Chemistry
Chemical imbalance of your water can cause severe damage
to your boiler and associated equipment, and may also
aect eciency. You may have to have your water quality
professionally analyzed to determine whether you need to
install a water softener. It is important that the water chemistry
on both the domestic hot water and central heating sides are
checked before installing the boiler, as water quality will aect
the reliability of the system. Outlined below are those water
quality parameters which need to be met in order for the
system to operate eciently for many years. Failure of a heat
exchanger due to lime scale build-up on the heating surface,
low pH or other imbalance IS NOT covered by the warranty.
To assure extended service life, it is recommended to test water
quality prior to installation. Listed below are some guidelines.
Do not use petroleum-based cleaning or sealing compounds in
the boiler system. Damage to elastomer seals and gaskets in the
system could occur, resulting in substantial property damage.
Sodium less than 20 mGL
Water pH between 6.0 and 8.0
1. Maintain boiler water pH between 6.0 and 8.0. Check with
litmus paper or have it chemically analyzed by a water treatment
company.
2. If the pH diers from above, consult local water treatment
company for treatment needed.
Hardness less than 7 grains
Consult local water treatment companies for unusually hard
water areas (above 7 grains hardness).
Chlorine concentration less than 100 ppm
1. Using chlorinated fresh water should be acceptable since
drinking water chlorine levels are typically less than 5 ppm.
2. Do not connect the boiler to directly heat a swimming pool
or spa water.
3. Do not ll boiler or operate with water containing chlorine
in excess of 100 ppm.
Hardness: Less than 7 grains
Chloride Levels: Less than 100 ppm
pH Levels: 6-8
TDS: Less than 2000 ppm
Sodium: Less than 20 mGL
Clean system to remove sediment*
1. You must thoroughly ush the system (without boiler
connected) to remove sediment. The high-eciency heat
exchanger can be damaged by buildup or corrosion due to
sediment.
2. For zoned systems, ush each zone separately through
a purge valve. (If purge valves and isolation valves are not
already installed, install them to properly clean the system.)
3. Flush system until water runs clean and you are sure piping
is free of sediment.
*NOTE: It is recommended you clean heat exchanger at
least once a year to prevent lime scale buildup. Follow the
Thoroughly clean and ush any system that has used glycol
before installing the boiler. Provide the customer with a material
safety data sheet (MSDS) on the uid used.