Rima Heating Systems S.MAX Series, Installation, Operation & Maintenance Manual

Dewing and tarring

When starting  fire in a cold boiler, water condensates on the walls and  runs down into the ash compartment,

which may  make  an impression that the boiler  is leaking. This  dewing  will  disappear  after the  astray has 

settled on the boilers inside walls. When  running the boiler with low water  temperature  usually below  65°C,

or when using damp fuel water condensates in combustion gases and the condensate runs down the

or  when   using  damp  fuel,  water  condensates  in combustion  gases  and  the condensate runs down the

boiler’s cold  walls. Low temperature heating also reduces the chimney life. Therefore  it is recommended  to

equip the boiler with for instance a four-way blending valve which  will ensure that  the temperature  of return

water  does not drop below 50°C.  Boiler  tarring occurs under similar conditions  ( lack of combustion air, the

boiler is choking ). To  prevent  dewing and tarring,  we recommend you run the boiler at temperatures higher

than 65 °C and  choose a  boiler to match the  required  heating  system  output.  An oversized  boiler suffers

unnecessarily, because it has to be run at low temperatures.

Boiler shutdown

We do not recommend that you try to speed up the boiler combustion process.The fuel must burn completely

on its own on the stoker.

Short term shutdown

After shutting  the  boiler down, clean it, remove all combustion residuals,empty the ashtray,clean the stoking

door   contact   surfaces   and   the  ash  compartment,  and  then  shut  the  boiler’s  stoking  door  and   ash 

compartment  door.

Long term shutdown

When  shutting  the  boiler  down  for a protracted  period of time ( heating season end ),  the  boiler must be

thoroughly cleaned from all soot and ash sediments, in which dampness accumulates and causes 

excessive corrosion of the boiler body.

Important information

• The boiler may only be operated by an adult person familiar with these Operating Instructions.

• Shut  the boiler down every time  there  are any ( even temporary ) flammable or explosive  fumes present on

the premises from which combustion air is supplied to the boiler ( e.g.  From  paint when  painting, laying and

spraying molten substances, from gas leakage, etc.).

• It is forbidden to light the boiler with explosive substances.

• It is forbidden to overheat the boiler.

• At  the end of  the heating  season  the boiler, flue  and  flue adapter, must be thoroughly  cleaned.  Lubricate

all hinges the flue flap mechanism and other moving

all hinges, the flue flap mechanism and other moving. 

Boilers maintenance are made in three programs.Daily (in everyday use ),periodic and yearly.

Maintenance

Daily Controls 

These are the processes that the user must apply every day in season of everyday use. The combustion chamber and
fittings must be checked.Combustion products in the chamber must be cleaned  and the ash tank must be discharge.  

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