Valve proving system
VPS 504
Series S06 (120Vac)
Series S05 (24Vdc)
Approvals:
VPS 504 S06 (120Vac) is:
CSA Certified
File # 1637485
CSA Requirement No. 4-01
(for USA)
Technical Information Letter
R-15 (for Canada)
UL Recognized
File # MH17004
FM Approved
File # J.I. 3004006
New York City Accepted
File # MEA 57-05-E
VPS 504 S05 (24Vdc) is:
CSA Certified
File # 1637485
CSA Requirement No. 4-01
(USA)
Technical Information Letter
R-15 (Canada)
EC Type Certificate
CE-0085 AP 0808
Codes and Standards:
This product is intended for installations
covered by but not limited to NFPA 86,
NFPA 85, Swiss Re (formerly IRI), or
CSA B149.3.
VPS Sales Brochure P/N 226 356 Ed. 11/07
DUNGS is an ISO 9001 manufacturing facility.
16
Description
The VPS 504 is a valve proving system
for DMV series automatic valves. IIt verifies that both safety shutoff valves in a
gas train are fully closed before a system
start-up or after system shutdown when
wired and interlocked to a suitable flame
safeguard control. The VPS will halt the
start-up sequence to a burner if it detects an open automatic shutoff valve,
thus preventing ignition under potentially
dangerous conditions.
- Release Signal Timing: min.10 s, max.
26 s.
- Maximum test volume 0.14 ft3.
- RUN or ALARM condition is indicated by an LED.
- Electrical connection at screw terminals
via 1/2 NPT conduit connection.
- Detectable leakage rate (each valve):
0.2 to 1.4ft3/h. See graph on page 2.
- No field adjustements or settings
required.
Application
The VPS 504 is recommended for industrial and commercial heating applications.
Some authorities having jurisdiction accept the VPS in lieu of proof of closure
when integrated with the preignition
system and/or in lieu of a vent valve when
it checks the valves at start up and shut
down. It can also be used as a valve
seat tightness check when used within
its capabilities.
The VPS is suitable for natural gas, propane, air, and inert gases. Not suitable
for butane gas.
VPS 504 S06 and S05
Valve proving system for DMV series safety shutoff valves
Specifications
Max. operating pressure
7 PSI (500 mbar)
Max. Body pressure
15 PSI (1 bar)
Electrical ratings (+10%/-15%)
110 - 120 Vac / 60 Hz for S06 series or 24Vdc for S05 series
Switch Output Rating
Series S06 is Run T5: 4 A res, 2 FLA @ 120 Vac & Alarm T3: 1 A res, 0.5 FLA @
120Vac. S05 is Run TB: 4 A @ 24Vdc & Alarm TS: 1 A @ 24Vdc.
Power ratings (consumption)
Test period: 60 VA
In operation: 17 VA
Enclosure rating
NEMA Type 12
Electrical connection
Screw terminals with 1/2 NPT conduit connection
Operating time
100% duty cycle, max. 20 test cycles/h
Materials in contact with gas
Housing:
Rubber components:
Ambient operating temperature
+5 F to +140 F (-15 C to +60 C)
Mounting position
Mounts directly to DMV via mounting screws (included with VPS)
upright vertical to horizontal
Test volume
max 0.14 ft3
Release Signal Timing
~ 10 s for test volume < 0.05 ft3
> 10 s (max. 26 s) for test volume > 0.05 ft3
Detectable leakage rate (each valve)
< 1.76 ft3/h
Detectable leakage through both
valves
0.2 to 1.0 ft3/hr (worst case scenario; both valves leak 0.88 ft3/h)
Aluminium
NBR-based rubber
LEAK DETECTION LIMIT (each valve)
NOTE: Leak detection limit
depends on inlet pressure
and gas density.
To obtain detectable leakage
through both valves, divide
value in chart by 1.6.
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VPS 504 sectional diagram
1
2
3
4
5
6
7
Hall Sensor
Solenoid
Pressure switch diaphragm
Compression spring
Filter
Safety valve anchor (V3)
Safety valve coil
Functional description
The VPS proves the integrity and the
effective closure of the valve seats by
pumping gas from upstream of the main
safety valve to the volume between the
two safety shutoff valves and detecting
leakage. The VPS proves the valves as
soon as power is applied. Valve proving
can also occur prior to each start-up,
after normal shut-down, and after safety
shut-down when the VPS is integrated
with the CM 100 or CM 101 control
module. When the VPS is integrated
with the CM 100 or CM 101, Swiss Re
(formerlly IRI) would allow the VDK 200
to be used in lieu of a vent line.
36
8
9
10
11
12
13
14
Pressure pump
Reset switch
Alarm lamp
Run lamp
Inlet test nipple (p1)
Outlet test nipple (p2)
Pump diaphragm
15
16
17
Pump linkage
PWB
Terminal block
Release period tF
Time from the beginning of the test cycle
until the RUN T5 contact is energized.
The release period of the VPS depends
on test volume and input pressure:
VTest < 0.05 ft3
} t 10 s
p1 > 8 - 200 in. W.C. F
VTest > 0.05 ft3
} t >10 s
p1 > 8 - 200 in. W.C. F
tF max. 26 s
Test period is the pumping time of
motor pump.
Test volume VTest
Volume between V1 and V2
VTest max. /VPS 504 = 0.14 ft3
Program Sequence
Idle state: Valves 1 and 2 are
closed.
Idle state
Valve proving: The internal pump
pumps gas pressure from upstream
the first safety valve, p1 , to the volume
between the two safety valves. The gas
pressure between the two safety shutoff valves, p2 , increases approx. 8 in.
W.C. above p1.
During the test period, the internal
differential pressure switch monitors
the pressure between the two safety
valves.
Valve
Proving
Operation
The release time (10 - 20 s) depends on
the test volume (max. 0.14 ft3) and input
pressure (max. 200 In. W.C.)
In the case of short-term voltage failure
during test or burner operation, an automatic restart is performed.
Operation
VPS pump remains off. RUN contact
remains energized, and both valves are
open.
If p2 increases approx. 8 in. W.C. above
p1, the motor pump is switched off (end
of test period) as no leak is detected.
The contact RUN (T5) is energized
after 26 s max. and the yellow signal
lamp lights continuously. (For 24Vdc
models, terminal B is energized)
If p2 does not increase approx. 8 in.
W.C. above p1, the motor pump is
switched off (end of test period) as a
leak is detected. The contact ALARM
(T3) is then energized after about 26 s,
and the red signal lamp lights continuously. (For 24Vdc models, terminal S
is energized)
46
Program flowchart
Electrical connection
1/2 in. conduit connection to screw
terminals below cover in housing (see
Dimensions VPS 504).
leak detected
or valve open
no leak
detected
Operating voltage for S06
series is 120 Vac / 60 Hz ONLY.
NOT for 50 Hz operation.
Accessory: CM 100 and CM 101
The DUNGS CM 100 and CM 101
incorporate the relays and logic necessary to operate the VPS 504 S06 on
a system start up and after shutdown
when wired and interlocked with a suitable flame safeguard control. When the
VPS is integrated with the CM 100 or
CM 101, Swiss Re (formerlly IRI) would
allow the VDK 200 to be used in lieu of
a vent line.
56
/60 Hz
VPS 504 S06 and S05
Valve proving system
Version
Order No.
VPS 504 S06 (120Vac 60Hz)
221-073
VPS 504 S05 (24Vdc)
224-983
Accessory
Order No.
CM 100 with enclosure (120Vac)
46022
CM 101 panel mount (120Vac)
46023
5.9 (150)
5.8 (147)
Dimensions inch (mm)
We reserve the right to make any changes in the interest of technical progress.
Karl Dungs Inc.
524 Apollo Drive, Suite 10
Lino Lakes, MN 55014, U.S.A.
Phone 651 792-8912
Fax 651 792-8919
e-mail info@karldungsusa.com
Internet http://www.dungs.com/usa/
Karl Dungs GmbH & Co. KG
P.O. Box 12 29
D-73602 Schorndorf, Germany
Phone +49 (0)7181-804-0
Fax +49 (0)7181-804-166
e-mail info@dungs.com
Internet http://www.dungs.com
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