Bartscher GWTH1 Mode D'emploi page 43

Control of gas pressure and rated heat load (fig. 6)
•
During the first installation the installer must check the rated heat load of the device
and if necessary introduce appropriate changes or modify the device for a different
type of gas.
•
DO NOT attempt to increase the rated efficiency or heat load of the device.
•
Check the heat load with use of gas meter and stop-watch. Thoroughly measure the
amount of gas consumed by the device in the time unit at maximum efficiency.
•
Compare the measured value with the data in section 4.1 "Technical specification".
The allowable deviation is ±5%.
•
If the deviation during the measurement is higher check the diameter and quality of
installed injectors and the gas pressure in the network. If the gas pressure it the
network is to be measured with use of liquid gauge (e.g. U-tube manometer with
calibration every 0,1 mbar), proceed as below:
•
Connect hose "E" to the manometer "M" after unscrewing the cover of the
pressure inlet "C".
•
Measure the connection pressure: If the measured value in outside of range
listed in the table below the device may not operate correctly. In such case
contact the gas supplier in order to find the solution of that problem.
•
Install the pressure reducer when required.
•
After the pressure measurement disconnect hose "E" and retighten the
cover of the pressure inlet "C".
•
Reinstall all parts in the opposite sequence.
Fig. 6
C = pressure inlet
D = gas line
E = hose
G = inlet connection
M = manometer
R = gas valve
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