Weishaupt WTC-GB 90-A, Инструкция по установке и эксплуатации

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7.4 Calculating the burner rating
V
B
Operating volume in m
3
/h (gas throughput)
V
N
Normal volume in m
3
/h (gas throughput at 0 °C and 1013 mbar)
V
G
Gas throughput determined at gas meter
T
M
Time measured during gas throughput determination (V
G
)
f Conversion factor
t
Gas
Gas temperature at meter in °C
P
Gas
Gas pressure at meter in mbar
P
Baro
Barometric air pressure in mbar (see table)
Q
F
Combustion heat rating in kW
H
i
Calorific value in kWh/m
3
(at 0 °C and 1013 mbar)
Determine operating volume (gas throughput)
▶
Measure gas throughout V
G
at gas meter, measuring time T
M
should be a minimum
of 60 seconds.
▶
Calculate operating volume (V
B
) using the following formula.
Calculate conversion factor
▶
Determine gas temperature (t
Gas
) and gas pressure (P
Gas
) at gas meter.
▶
Determine air pressure (P
Baro
) from the following table.
Height
above sea
level (m)
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
P
Baro
in mbar
1013 1001 990 978 966 955 943 932 921 910 899 888 877 866
▶
Calculate conversion factor (f) using the following formula.
Calculate normal volume
▶
Calculate normal volume (V
n
) using the following formula.
Calculate burner rating
▶
Calculate burner rating (Q
Br
) using the following formula.
Installation and operating instruction
Gas condensing boiler WTC-GB 90-A
7 Commissioning
83266502 • 1/2010-08 • La
60-95