Slant/Fin EUTECTIC EC-13A Installation And Operating Instructions Manual page 19

EUTECTIC EC-10
Recent investigations of boilers which were installed in hard water
areas, revealed that mineral deposits had accumulated at the
bottom of the heat exchanger. In addition, sludge, scale and other
solid contaminants were present in boilers installed in older
systems or where the water was supplied from a well. This
accumulation —observed to be 64 mm (2-1/2") or more – creates
an insulating layer that drastically affects boiler efficiency by
reducing the transmission of heat through this primary transfer
surface and causes extreme metal temperatures that eventually
crack the heat exchanger.
Note: DOMESTIC TANKLESS HOT WATER COILS ARE HIGHLY
SUSCEPTIBLE TO THIS CONTAMINATION
THE TERMS OF THE BOILER WARRANTY WILL NOT APPLY TO
FAILURES ENCOUNTERED UNDER THESE CIRCUMSTANCES.
RECOMMENDATIONS:
On all installations in hard water areas:
1. The system should be thoroughly inspected for leaks which
must be repairedhowever minor they may be.
A low water cut-off may be required by local codes. If the boiler is
installed above the radiation level, a low water cut-off device must
a. Seal any unused openings in the common venting system.
b. Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deficiencies which
could cause an unsafe condition.
c. Insofar as is practical, close all building doors and windows
and all doors between the space in which the appliances
remaining connected to the common venting system are
located and other spaces of the building. Turn on clothes
dryer and any appliance not connected to the common
venting system. Turn on any exhaust fans, such as range
hoods and bathroom exhausts, so they will operate at
maximium speed. DO NOT operate a summer exhaust fan.
Close fireplace dampers.
d. Place in operation the appliance being inspected Follow
the lighting instructions. Adjust thermostat so appliance will
operate continuously.
e. Test for spillage at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a match
or candle, or smoke from a cigarette, cigar or pipe.
REMOVAL OF EXISTING BOILER FROM COMMON VENT SYSTEM
APPENDIX D
WATER QUALITY
2. The initial water charge of the system must be treated to reduce
its hardness to an acceptable level.
3. Where a continuous fresh supply of hard water is fed to the sys-
tem as with process or steam boilers, it is essential that:
a) The feed water is treated to reduce the level of hardness to
a point where no significant deposition occurs in the boiler.
OR
b)The treated boiler water circulates through a closed circuit
heat exchanger which in turn will heat the distribution sys-
tem water.
In addition to the aforementioned, older systems and those
supplied from wells may require that a filter or strainer be
incorporated in the circuit at some point on the return line
closest to the boiler. Suitable water treatment filters are com-
mercially available for this purpose.
WE STRONGLY RECOMMEND THAT YOU CONVEY THIS VITAL
INFORMATION TO ALL PARTIES CONCERNED.
APPENDIX E
be installed in all instances. Do not install an isolation valve
between the boiler and the low water cut-off.
APPENDIX F:
f. After it has been determined that each appliance
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers and any
other gas burning appliance to their previous conditions
of use.
g. Any improper operation of the common venting system
should be corrected so the installation conforms with the
National Fuel Gas Code, ANSI Z223.1-latest edition or
CSA B149.1-00 for natural gas and propane. When
resizing any portion of the common venting system, the
common venting system should be resized to approach
the minimum size as determined using the appropriate
tables in Appendix G in the National Fuel Gas Code,
ANSI Z223.1-latest edition or CSA B149.1-00 for natural
gas and propane.
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