5
upper part of
boiler shell
panel
reservoir for
thermometer
sensor, boiler and
safety thermostat
(pump
thermostat)
frontal part of
boiler shell
shade
gas valve
automatics
burner plate with
insulation
ignition pilot
burner
burner nozzle
2.
Boiler use and advantages
Cast-iron sectional gas boiler VIADRUS GARDE G 42 or G 42 ECO (only generally G 42 hereinafter)
equipped with atmospheric burner is designated for combustion of low-pressure natural gas and propane.
The boiler is manufactured in design B
11BS
, it means it is equipped with combustion products return flow
fuse. The two and three sectional size is suitable for heat sources reconstructions in individual flat units and
for smaller housing and recreation facilities. The bigger sizes suit the demands on heating the houses,
shops, schools etc.
The boiler is only manufactured in hot water design with forced circulation and working overpressure up to
400 kPa (4 bar). Before dispatch it is checked for tightness by test overpressure 800 kPa (8 bar); it stands
the insulation and transient resistance tests.
If you require preferential heating of hot service water you can order separately stationary VIADRUS
OV 100L heater the design of which corresponds to VIADRUS GARDE G 42 boiler
By its electric connection the boiler is adjusted to the connection of the stack hot service water heater
ensuring the service water preferential heating.
The low-temperature cast-iron boiler VIADRUS by its top quality construction of cast-iron sections reduces
the condensation thus also the danger of low-temperature corrosion.
The heating (convection) surfaces of the boiler drum achieve a high use of heat contained in combustion
products. Thanks to the use of high quality cast-iron the boiler is able to transfer the absorbed heat
maximally to the heating water, this evenly to all parts of boiler.
The heating water needn’t be kept at a temperature above 50 °C because at the temperatures of return
water about 30 °C this boiler isn’t damaged by low-temperature corrosion.
In boiler construction there is fully used the empiric knowledge in boilers operation under our climatic
conditions when especially in the transient time of heating season the boilers happen to be operated at a
lower heating temperature. This operation on one hand increases the boiler efficiency but the other hand it
increases the risk of exchanger low- temperature corrosion.
At VIADRUS GARDE G 42 boiler this economical operation does not generate any negative effects either.
Fig. no. 1
Boiler diagram
combustion
products outlet to
chimney
built-in draught
diverter
combustion
products return
flow fuse
automatic
bleeder valve
heating water
outlet
iron boiler drum
gas supply
burner
boiler base
Summary of Contents for GARDE G 42 ECO
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