General Information
4
Dear Customer
Thank you for your purchase of the NAOS K4 boiler and for your confidence in VIADRUS a.s.
To become familiar with a proper operation of your new product since the beginning, please read
carefully the presented user´s manual, especially Chapter No. 5 – Boiler Attendance by the user,
Chapter No. 6 – Maintenance, and Chapter No. 7 – IMPORTANT NOTICES. We ask you to follow the
information presented below and especially to perform the prescribed annual inspections to be
performed by an authorized specialized company, which guarantees a long-term boiler operation free
of failures to both your and our satisfaction.
1.
Produced Versions of the Boilers
In your order specify the following:
Order specification code:
NAOS K4 X X X XX X X
Conversion of the NAOS K4 boiler from natural gas to propane and vice-versa can be performed by a
contracted service provider only.
Chimney flue made by ALMEVA has been certified for this boiler. If you use chimney flue made by a
different producer, it is necessary to use a system with identical parameters as for the certified type
of the chimney flue.
2.
Boiler Application and Benefits
The NAOS K4 condensing boiler has been designed for combustion of low pressure natural gas.
The size of the condensing boiler is suitable for heating of family houses and recreational facilities as well as
for reconstruction of heat sources in individual apartment units. The condensation heat output is 5 – 24 kW.
The boiler body efficiency at the 50/30 °C temperature gradient varies in a range of 101 – 105 % depending
on the required output.
Boiler Benefits:
•
Low gas consumption
•
High combustion efficiency
•
Smooth output modulation
•
Easy attendance and maintenance
•
The boiler enables connecting to a reservoir of hot service water heater and ensures its preferential
heating
•
Reliability of the regulation and safety components
•
Low weight
•
Equithermal boiler regulation
Cover color:
W: white
R: red
S: silver
B: black
Output:
24: 24 kW
Electrical
equipment
:
S: SIT
Water heating:
1: without installed three-way
valve with a pump
2: three-way valve, pump, HSW
exchanger
3: with a three-way valve with a
pump
Exchanger:
G: stainless
Sermeta
Fuel:
Z: natural gas
P: propane
