Fantini Cosmi ZD NA Series User manual

44
ZD..NA
Normally open electromagnetic safety valves
with manual reset
Normally open electromagnetic safety valves for air and non-aggressive gases (according to EN437) with manual reset.
1on opening
C
D
A
H
Int
B
A
C D
B
DN A B C D Int h
DN15 30 58 115 130 - -
DN20 35 55 113 130 - -
DN25 40 62 115 137 - -
DN32 120 153 170 203 - -
DN40 120 153 170 203 - -
DN 50 106 156 175 213 - -
DN 65 200 305 260 350 145 4x18
DN 80 200 305 260 350 160 8x18
DN 100 252 350 280 410 180 8x18
ZDEV...15 ÷ 50 ZDEV...65 ÷ 100
Connection
type
Passage
DN
Power supply Body Maximum
pressure
mbar
Absorption
W
Unit
weight
Kg
ZDVGRM15NA threaded RP 1/2 15 230Vac 50/60Hz brass 500 16 0,4
ZDVGRM20NA threaded RP 3/4 20 230Vac 50/60Hz brass 500 16 0,6
ZDVGRM25NA threaded RP 1 25 230Vac 50/60Hz brass 500 16 0,7
ZDEVRM32NA threaded RP 1 1/4 32 230Vac 50/60Hz aluminum 500 16 1,6
ZDEVRM40NA threaded RP 1 1/2 40 230Vac 50/60Hz aluminum 500 16 1,6
ZDEVRM50NA threaded RP 2 50 230Vac 50/60Hz aluminum 500 16 1,9
ZDEVRMF65NA flanged DN 65 65 230Vac 50/60Hz aluminum 500 19 8,2
ZDEVRMF80NA flanged DN 80 80 230Vac 50/60Hz aluminum 500 19 8,2
ZDEVRMF100NA flanged DN 100 100 230Vac 50/60Hz aluminum 500 19 16
ZDVGRM15NAF threaded RP 1/2 15 24Vac brass 500 16 0,4
ZDVGRM20NAF threaded RP 3/4 20 24Vac brass 500 16 0,6
ZDVGRM25NAF threaded RP 1 25 24Vac brass 500 16 0,7
ZDEVRM32NAF threaded RP 1 1/4 32 24Vac aluminum 500 16 1,6
ZDEVRM40NAF threaded RP 1 1/2 40 24Vac aluminum 500 16 1,6
ZDEVRM50NAF threaded RP 2 50 24Vac aluminum 500 16 1,9
ZDEVRMF65NAF flanged DN 65 65 24Vac aluminum 500 19 8,2
ZDEVRMF80NAF flanged DN 80 80 24Vac aluminum 500 19 8,2
ZDEVRMF100NAF flanged DN 100 100 24Vac aluminum 500 19 16

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TECHNICAL FEATURES
Voltage tolerance: -15% / +10%.
Environment temperature: -15°C / +60°C.
Working pressure: 500 mbar Max.
Closing time < 1 second.
Protection degree: IP54.
Cable gland: PG 9.
Pressure inlets: G1/4” on two sides (except models with brass body).
Limit switch: by request from 3/4” to 4”.
Gas type: Air and non-aggressive gases (EN 437).
Filter: 600 μm (except models with brass body).
INSTALLATION
Check the correspondence between flow direction and the arrow printed on valve body, verify the correct alignment of connecting
pipes and allow enough space from the walls to allow free air circulation.
The valve may be mounted with coil in horizontal or vertical position. The coil may be oriented 360 degrees in any direction.
Install the valve in an area protected from rain and water splashes or drops.
For electrical connection remove the cap of the plug and connect power cables to circuit clamps.
OPERATION
Normally open gas safety valve with manual reset.
A manual operation is necessary to open the valve and set the mechanism which allows this state maintaining.
The powering by means of line current and/or condenser discharge, induced by the leakage detector, causes
mechanism releasing and consequently gas passage closing.
If sensor energizing persists due to the gas presence, the valve remains under voltage and does not allow the
reset.
When the causes for blocking have been eliminated, the valve may be reopened by operating it manually.
This type of device, connected with one or more gas leak detectors or alarm signals for carbon monoxide
presence, is suitable for performing blocking operations on the gas line.
MODEL Fmax t<10S (Nm) Tmax (Nm) Cmax (Nm)
ZDVGRM15... 105 50 -
ZDVGRM20... 225 85 -
ZDVGRM25... 340 125 -
ZDVGRM32... 475 160 -
ZDVGRM40... 610 200 -
ZDVGRM50... 1100 250 -
ZDVGRMF65... 1600 - 50
ZDVGRMF80... 2400 - 50
ZDVGRMF100... 5000 - 50
ELECTRICAL CHARACTERISTICS
Rated voltage: 230Vac - 50/60Hz or 24Vac/dc
Upon request valves are available with coils for the following voltages: 110V AC 50/60Hz or 12V AC/DC
STANDARDS AND APPROVALS
Complies with 73/23/CEE; 89/336/CEE standards