the combustion chamber,it must be removed with a scraper or burnt with hard wood(orcoke),running the
boiler at maximum operating temperature.
Please note
Ashes should be stored (by using proper glove) in a noncombustible container properly and transported
outdoors.Other waste must not be stored in this container.
9.1
B
OILER REPAIRS
The boiler may repaired by an authorized service technician organisation only.The user or owner may do
only normal maintenance and simple replacements of some parts-e.g. sealing cords.
Please note
When repairing the boiler ,originals parts must always be used.
10
WARRANTY AND WARRANTY CONDITIONS
STR boilers are covered by warranty specifited in the Warranty Certificate,Service Book and User and
Installation Guide (chapter Introduction ,Installing the boiler).
10.1
B
OILER DELIVERY
The boiler are delivered completely assembled and functionally testetd.
The delivery includes:
1.Boiler
2.Operating and Installation Instructions
3.Thero-mechanical output regulator
4.Cleaning kit(brush,mixing rod)
10.2
I
NSTALLATION
I
NSTRUCTION
10.2.1
Boiler installation – General information
The STR boilers must be put into service by an authorized service.A network of authorized service
organisations which meet these conditions is avalaible for all boiler instalations,putting them into service and
for warrwnty repairs.These networks are organised by agreed distributors.The boiler is designed to supply
heating system with gauge pressure up to 400 kPa which use water that meets the requirements of related
standarts (under no circumstance may the water be acidic,i.e. it must have ph ≥7,and it should have minimum
carbon hardness).The heating system must be designed in such a way that hot water can circulate all the
throught at least some of the radiators.Antifreeze fluids-because of their unsuitable properties,we do not
recommend to them.They have a reduced ability to transfer heat, have large volumetric expansion, age and
damage rubber componentss.If under concrete circumstances is no other option how reliable prevent.
Before finalinstalation,the heating system distribution piping must be flushed several times with
pressurised water.In old,alredy used system,the flushing must be done in opposite direction to the hot water
circulation.In new system, alll radiators must be cleaned from conservation material and rinsed with warm
water under pressure.We recommennd installing a sludge trap upsteam of the boiler (i.e.on hot water retup
pipe).The sludge trap design should allowe emptying regular intervals,without the need to drain a lot of hot
water.The sludge trap may be combined with a filter, however,a filter alone will not provide an adaquate
protection.
Please note
System must be connected to open expansion tank for safety reason. Any valve must not be connected
to safety input and output lines. For increasing safety of the sytem by-pass line must be installed on the line
between input and output of circulation pumps,as show in diagrams. By-pass line´s valve must be kept closed
as the boiler is working normally. By-pass line´s valve can be used in electricity problems and must be
opened if there is a risk of overheating in system water caused by an electricity cut or problem. The pipe used in
by-pass line must be at least in the diameter of plumbing system pipe. UPS(Power Supply Units) can be used
for preventing electricity problems.
Please note
Any problems (malfunctions) caused by boiler clogging with dirt from the heating system and or
malfunctions induced by clogging,are not covered by the boiler warranty. The filter as well as the sludge trap
must be checked and cleaned regulary.
