Wiring; Tightness Test; Setting The Flow Rate - Honeywell KROMSCHRODER LFC Instrucciones De Utilizacion

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The LFC is installed in-between two flanges.
9 7 8
▷
The LFC has been supplied without flanges.
7 8
10 9 11
13 14

Wiring

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Electrical connection of the IC (see operating in-
structions "Actuators IC 20, IC 40, IC 40S, But-
terfly valves BVG, BVA, BVH, BVHS").

Tightness test

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Shut off the gas supply.
1 Close off the outlet of the LFC with a blanking plate
or close the solenoid valve for gas downstream
of the LFC.
The LFC is in the closed position once the IC has
been installed.
 Set the IC 20 in manual mode, or the IC 40 using
BCSoft, to 100% open position (see operating in-
structions "Actuators IC 20, IC 40, IC 40S, Butterfly
valves BVG, BVA, BVH, BVHS", Commissioning).
3
1,5 x p
N
e max
2
▷
Remove the blanking plate or open the solenoid
valve for gas downstream of the LFC.
4 Once the tightness test has been carried out suc-
cessfully, move the LFC to the closed position
once more using the actuator IC.

Setting the flow rate

9
▷
▷
9
▷
12
1
2
3
 = Natural gas, dv = 0.62,
 = LPG, dv = 1.56,
 = Air, dv = 1.00
▷
7
The maximum flow rate can be adjusted using
the adjusting spindle (2.5 Allen key) in the base
plate:
turning it clockwise will decrease the volume,
turn it anti-clockwise will increase the volume.
The LFC is set to the maximum flow rate at the
factory.
+ –
The LFC is controlled by the IC (see operating
instructions "Actuators IC 20, IC 40, IC 40S, But-
terfly valves BVG, BVA, BVH, BVHS").
100
80
60
50
40
30
20
10
8
6
5
4
3
2
1
1 2 3 4 5 6 7 8 10
1 2 3 4 5 6 7 8 10
1 2 3 4 5 6 7 8 10
The characteristic curves are measured at 15°C
with a measurement set-up in accordance with
the standards EN 13611/EN 161. This involves
measuring the pressure 5 × DN upstream and
downstream of the unit under test. The pres-
sure drop of the pipe is also measured but is not
compensated for.
Left curve:
Min. flow rate adjustable by flow restricting
cylinder.
Right curve:
Max. flow rate with restricting cylinder fully
open.
20 30 40 50 60 80 100 200 300
20 30 40 50 60 80 100 200
20 30 40 50 60 80 100 200
V ' [m 3 /h (n)]