Riello 20011691, Инструкции по установке, использованию и обслуживанию

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6
GAS PRESSURE
The adjacent diagram shows minimum pressure losses
along the gas supply line depending on the maximum
burner output operation with natural gas.
Column 1
Gas manifold pressure measured at test point 1)(B),
with:
• Combustion chamber at 0” WC;
• Burner operating at maximum output;
• Combustion head adjusted as indicated in diagram
(C)p. 8.
Calculate the approximate maximum output of the
burner as follows:
- subtract the combustion chamber pressure from the
gas pressure measured at test point 1)(B).
- Find the nearest pressure value to your result in
diaram (A).
- Read off the corresponding output on the left.
Example
• Maximum output operation
• Natural gas
• Gas pressure at test point 1)(B)
= 4.09“ WC
• Pressure in combustion chamber = 1.18“ WC
4.09 - 1.18 = 2.91“ WC
A maximum output of 4094 MBtu/hr shown in diagram
(A) corresponds to 2.91” WC pressure.
This value serves as a rough guide, the effective deliv-
ery must be measured at the gas meter.
(A)
D2441
(B)
1
2
D3188
∆
p
[
“W
C
]