HS Tarm 2000, Инструкция по установке и эксплуатации

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T
ROUBLESHOOTING
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TROUBLESHOOTING
This section is designed to assist the homeowner and the installing contractor in the care of the
heating system as well as in the correction of some of the more common problems
encountered in the operation of the Tarm EXCEL boiler. It is not possible within the scope of
this manual to cover all possible service aspects of hydronic heating systems. Your installing
contractor or designer are the best source for information to answer questions regarding your
heat distribution system. Your H.S. TARM dealer or TARM USA, INC. are available for further
support as to heating system questions and any and all questions regarding H.S. TARM boilers
and how they are integrated into your distribution system.
BOILER OVERHEATING
IN NORMAL OPERATION, Tarm EXCEL boilers cycle on and off to meet the heating demand.
The heat output from these multi-fuel boilers is very controlled and very seldom is there a
problem with overheating. However, the wood fire will always produce a certain amount of
heat. When there is no demand for heat on the system, boiler temperature may rise. Usually
this extra heat is absorbed in the water of the boiler without causing an over- heat condition.
The on-off cycling of the boiler is like that of an oil or gas boiler.
Should the water temperature rise excessively in the boiler as it absorbs heat, the overheat
control will cause circulation of heated water to the house, even though the thermostat is not
calling for heat. This potentially wasteful overheating is most likely to occur during the Spring or
Fall. Before choosing your heating system design, the possibility of using a mixing valve
system to help avoid such problems should be considered. Either of these arrangements can
be added to any heating system.
NOTE: Overheating in the Tarm EXCEL is an occurrence that all homeowners must be
familiar with so that it can be corrected, if it occurs.
When the boiler temperature rises above a preset limit (usually 200-210
°
F), causing the
overheat control to operate and, perhaps eventually, the pressure relief valve to open, the
boiler is overheated.
CAUTION: NEVER ADD WATER TO AN OVERHEATED BOILER. Wait until the boiler
has cooled down before adding water.
The most common causes of overheating are;
•
Over firing the boiler (i.e., putting in too much wood for the heating needs of the house at
a given time),
•
Improper setting on temperature controls,
•
Electrical power failure,
•
Air leaks into the boiler (worn door gaskets, worn door latch, primary air damper stuck
open), and
•
Excessive chimney draft.
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