Customer service

Did the technician inspect your boiler correctly?

To ensure smooth operation, maintain efficiency of gas equipment, prevent shortening of its service life, and especially to fulfill Act no. 656/2004 Coll. (Act about energy...) it is recommended to have regular inspections of gas devices even after the warranty has expired.

We recommend the customer close a contract with a manufacturer-approved service company for these inspections. Inspections are ordered and paid for by the user. The cost of each inspection is contractual.

For individual devices the inspections are composed of:

1. WALL HUNG BOILERS AND BOILER MODULES

a) Adjust the settings of the expansion tank. Clean and check the functions of the automatic bleed valve and safety valve

b) Disassemble the gas burner and rid it of all contaminations (blow off with compressed air), check the apertures on the burner, clean the jets, electrodes and primary heat exchanger (combustion gases-water). Vacuum clean the entire combustion chamber. Before the combustion chamber is closed, the electrode gap is set. Check whether the insulation for high-voltage conductor (to the electrodes) is damaged.

c) For boilers with a pilot light clean and adjust the pilot.

d) Clean the fan; if there is dirt build up, wash the circulation wheel in a detergent bath; check the insulation of manostat tubes; remove their condensates and deposits in it and check the manostat settings.

e) For boilers with DHW heating, especially in areas with significantly dirty water or with reduced heating efficiency, decalcify (rinse) the secondary exchanger (water-water). Disassemble the three-way valve and clean all the internal parts. Clean the DHW intake filter. Check the state of the anode (changing the anode is not covered by the guarantee).

f) Check the flue.

g) Check that all threaded and soldered connections in the internal pipes have no leaks, especially check the gas mains connections for leaks. Check that all structural connections are tight.

h) Take out the gas valve and clean all the dirt from the intake filter, set the boiler's output, check the running and functioning of the ignition, the extinguishing of the entire device and the control and safety features.

i) Informatively check the wiring (for example if the insulation is damaged, if any conductors are hanging freely, etc.) especially all the connections of the protected conductor.

j) Disassemble the primary heat exchanger (combustion gases-water), pressure-wash the fins and clean the combustion chamber by submerging the fins in a detergent solution. Pressure wash the inside of the heat exchanger (against the flow of heating water). In case of serious contamination of the internal parts of the heat exchanger (crusty build up) it is recommended to use a chemical cleaner (such as DETEX). After a chemical cleaner has been used on the DHW side, neutralization is needed.

k) Disassemble the circulating pump's motor parts and clean its circulation wheel and the friction surfaces of the stator and rotor.

2. FLOOR STANDING AND CONDENSING BOILERS

a) Disassemble the burner bracket, clean the burner pipes with compressed air, visually inspect apertures on burner. Clean jets.

b) Clean electrodes and adjust settings. Check insulation of high-voltage conductors that lead to the electrodes.

c) For boilers with a pilot light clean and adjust the pilot.

d) Check that the heat exchangers on cast iron boilers are not blocked.

e) Check that the combustion gases are properly exhausted.

f) Take out the gas valve and clean all the dirt from the intake filter. After reassembly, set the gas pressure and check gas consumption at maximum and minimum output. Check the gas pipes for leaks.

g) Informatively check the wiring, especially all the connections of the protected conductor.

h) For KLZ and KKZ boilers, clean the pumps and check the state of the anode (changing the anode is not covered by the guarantee), as well as the internal part of the tank and the DHW safety valve.

i) Check and, if necessary, adjust the pressure in the expansion tanks.

j) For a condensing boiler, clean the combustion chamber of the stainless steel heat exchanger, clean the trap, fill it with water and check for leaks and smoothness of condensate run off.

k) Check and set CO2.


3. BOILERS WITH PRESSURE BURNERS

a) Clean the pressure compartment of the boiler and check that it is not blocked.

b) Check the chimney draft.

c) Set the burner to the parameters specified by the manufacturer.

d) Informatively check the wiring, especially the connections of the protected conductor.

e) Check the function of the safety features.

4. ELECTRIC BOILERS

a) Informatively check the wiring, tighten conductors (heating spirals, relay switches, terminals) and check flat connections on relay knives.

b) Disassemble the pump's motor parts, clean the friction surfaces of the stator and rotor, clean the bleed valve.

c) Check the heating water pipe connections and heating units for leaks.

d) Check, and if necessary, adjust the pressure in the expansion tanks.

e) Check the functioning of the emergency thermostat.