Dungs FRI 7/6 Series User manual

M/CD • 12.03 • Nr. 245 663
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Betriebs- und Montageanleitung
Operation and assembly instruction
Notice de fonctionnement et de montage
Istruzioni di esercizio e di montaggio
D I
GB F
Notice de fonctionnement et de montage
Gebruiks- en montageaanwijzing
Instrucciones de servicio y de montaje
Instruções de serviço e montagem
F P
NL E
Käyttö- ja asennusohjeet
Drifts- og monteringsvejledning
Bruks- och monteringsanvisning
Drifts- og monteringsinstruks
FIN N
DK S
Инструкция по эксплуатации и монтажу
Provozní a montážní návod
Instrukcja obsługi i montażu
Çal∂µt∂rma ve Montaj talimatlar∂
BG GR
RO H
Инструкция за монтаж и експлоатация
Instrucøiuni de montaj µi exploatare
Működési leírás és szerelési utasítás
Οδηγίες χρήσης και συναρµολόγησης
6 15
…
16 25
…
26 35
…
36 45
…
46 55
…
USA
CDN
Operation and assembly instruction 2 5
…
FRI … /6
CZ
RUS PL TR

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
CSA Certied: ANSI Z21.18 / CSA 6.3
Gas Appliance Pressure Regulator / File # 1135455
UL Unlisted Component
File # MH 16727 (sp)
EU Gas Appliance Drective
EN 88-1 / CE-0087 AU 0030
Commonwealth of Massachusetts Approved Product Approval code G1-1107-35
FRI 7../6
Gas Pressure Regulator
Installation Instructions
Table of Contents
USA CDN
Table of Contents ........................Page 1
Approvals ...............................Page 1
Attention ................................Page 1
Specication ............................Page 2
Lock-up Pressure Parameters..............Page 3
Regulator Orice Diameters ...............Page 3
Mounting................................Page 3
Mounting & Installation ...................Page 4
Pressure Taps ...........................Page 5
Breather Plug ............................Page 6
Vent Limiting Device & Vent Line Connection Page 6
Operation & Maintenance .................Page 7
Flow Curve ..............................Page 8
CSA Range of Regulation..................Page 9
Dimensions & Part Numbers ...............Page 9
Approvals
1, 2, 3 ... = Action
• = Instruction
Explanation of symbols
Attention
On completion of work on the
pressure regulator, perform a
leakage and function test.
Please read the instruction be-
fore installing or operating. Keep
t h e i n s t r u c t i o n i n a s a f e p l a c e . Yo u
nd the instruction also at www.
dungs.com If these instructions
are not heeded, the result may
be personal injury or damage to
property.
Any adjustment and application-
specic adjustment values must
be made in accordance with
the equipment manufacturers
instructions.
IFGC
CSA
ULANSI
NFPA
This product is intended for
installations covered by, but not
limited to, the following codes
and standards: NFPA 86, CSD-1,
ANSI Z21.13, UL 795, NFPA 85,
CSA B149.3, NFPA 37 or CSA
B149.1.
Breather
plug
Never close Breather hole!
Breather
hole
Safety
first
O.K.
The installation and maintenance
of this product must be done
under the supervision of an ex-
perienced and trained specialist.
Never perform work if gas pres-
sure or power is applied, or in
the presence of an open ame.
Accessories & Replacement ...............Page 10

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Specication
Max. Operating Pressure (MOP)
7 PSI (500 mbar) UL & CE
5 PSI (350 mbar) CSA
Max. Body Pressure (MOP)
15 PSI (1bar)
Ambient / Fluid Temperature
• +5°Fto+150°Fforupto7PSIfor
 regulatingbehavior(≈-15...65°C)
 (+/-10%ofsetpoint)
• -40°Fto+150°F
• CSACertiedfor-40°Fto+150°F
upto5PSI:Diaphragmsaresuit-
ableforthelowtemperature,but
theremaybeoutofrangeregulat-
ingbehavior.
• -15°Cto+70°CappliestotheCE
Marking.
Gases
Dry, natural gas, propane, butane;
other noncorrosive gases. Suitable
forupto0.1% byvolume,dryH2S.
A “dry” gas has a dew point lower
than+15°Fanditsrelativehumidity
islessthan60%.
Materials in contact with Gas
Housing:Aluminum
Sealingsonvalveseats:NBR-based
rubber
°F
0
-40
+150
FRI/6 Gaspressureregulator(lock-uptype)withintegratedgaslterinonehousing.TheFRI/6seriesregulatormounts
 directlytotheDMV701,702and703seriesvalves.Suitableasstand-alonewhenusingtwoanges.
Gas
Maximum pressure drop and gas
velocity
The maximum pressure drop is lit-
mitedbythecelocityofthegas.Donot
exceedagasvelocityof30meters/s.
Strainer
23Mesh,installedinthehousing
Filter
Mesh <0.05 mm, installed in the
housing
Hysteresis and Droop
Hysteresis/repeatabilityislessthan
10%forupto7PSIinlet.Average
droopat20:1turndownis10%for
upto7PSI
Lock-Up Rating
• TheFRImeetstheANSIZ21.80/
CSA6.22asClassI,whichallows
lockupratingnotmorethan150%
or5in.W.C.,whicheverisgreater.
• TheFRImeetsEN88-1asSG30,
whichallowslock-upashighas+
30%oftheoutletpressure.
• Seelock-upPressureParameter
onpage2formoredetails
Body Size Size
FRI705/6&707/6 1/2“-1“NPT
FRI710/6&712/6 1“-2“NPT
[PSI]
Vent Limiting Device and Vent Line
Connection
The FRI/6 has an internal, factory
installed vent limiter, which limits
the escape of gas to less than 0.5
CFH @ 5 PSI in case atmospheric
diaphragm ruptures. Vent limiting
devicealsocomplieswithEN88-1&
ISO2355-1.Ventingrequiredunless
otherwiseacceptedbytheauthority
havingjurisdiction.

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
PerANSIZ21.80,lock-upisdenedasanoutletpressurenot
morethan150%or5in.W.C,whicheverisgreater,abovethe
setpointafteradownstreamsafetyshutovalvecloseswithin
2seconds,andthetwofollowingconditionsexist:
1.outletpressureissettothehighestsetpointofthespring,
and
2.theregulatorissettomaximumcapacityorowatwhich
the regulator will control lockup pressure within the ac-
ceptablelimits.
Thismeansthatinagivenapplication,alockupgreaterthan
150%or5in.W.Ccouldoccur,dependingouttheinletpres-
sure,theoutletpressureoftheregulator,theowrateofthe
regulator,andthepipevolumedownstreamtheregulatorand
upstreamthesafetyshutovalve.
Per DUNGS, lock-up is +30% of the outlet pressure set-
tingafterdownstreamshutovalveslowlycloseswithin30
seconds.Therefore,inagivenapplication,alockupgreater
than+30%or5in.W.Ccouldoccur,dependingontheinlet
pressure,theoutletpressureoftheregulator,theowrateof
theregulator,andthepipevolumedownstreamtheregulator
andupstreamthesafetyshutovalve.
If in a given application the lock-up pressure is too high,
employingoneor moreof thefollowingshouldreduce the
lock-uppressure:
1.Increasethesizeoftheregulator.
2.Increasethepipevolumedownstreamtheregulatorand
upstreamthesafetyshutovalve.
3.Decreasetheinletpressure.
4.Decreasetheouletpressure.
5.Reducetheowrate.
6.Removeventline,ifinstalled.
Lock-up Pressure Parameters
Regulator Orice Diameters
Regulator Type Orice Diameter (mm)
FRI705/6 17.0
FRI707/6 24.0
FRI710/6 29.0
FRI712/6 37.5
Recommended Mounting Procedure
Regulatordomefromverticallyuprighttolyinghorizontally
Mounting
If the ow is not in the same direction of the
arrows, the regulator will not operate properly.

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Mounting & Installation
Recommended Procedure to Mount Flanges
1. Makesuretheo-ringsandthegroovesarecleanandin
goodcondition.
2. InstalltheFRI/6withthegasowmatchingthedirection
indicatedbythearrowsonthecasting.
3. MounttheFRI/6verticaluprighttohorizontal.
4. Cleanthemountingsurfaceoftheanges.Makesurethey
areingoodcondition.
5. AttachtheFRI/6totheangesusingtheappropriateM6
orM8socketcapscrewssupplied.
• Theregulatorcanbemountedeitherupstreamordown-
streamoftheDMV.Itcanalsobemountedasastandalone
regulatorusingtwoangesandtheangemountingkit.
• Themaingassupplymustbeshutobeforestartingthe
installation.
• Examinetheregulatorforshippingdamage.
• Theinsideoftheregulatorandpipingmustbecleanand
freeofdirt.
Recommended Procedure to Mount the FRI/6 regulator
to a DMV 701, 702, or 703 series safety shuto valve.
1. Replacetheo-ringinthegrooveonthesideoftheDMV
bodywiththeovalo-ringsuppliedwiththemountingkit.
2. Makesuretheovalo-ringandthegroovearecleanand
ingoodcondition.
3. InstalltheFRI/6regulatorandDMVseriesvalvewiththe
gasowmatchingthedirectionindicatedbythearrows
onthebody.
4. AttachtheregulatortotheDMVseriesvalvebodyusingthe
socketcapcrewssuppliedintheFRI/DMVmountingkit.
5. Usea5mmAllenwrenchfortheFRI705/6&707/6.
6. Usea6mmAllenwrenchfortheFRI710/6&712/6.
7. Tightenthescrewsincrisscrosspattern.
8. Donotovertightenthescrews.Followthemaximumtorque
valueslistedbelow.
9. Afterinstallationiscomplete,performaleaktesttoverify
thatnoleakageoccurs.
Recommended Piping Procedure & Applying Pressure
• Usenew,properlyreamedandthreadedpipefreeofchips.
• Applygoodqualitypipesealant,puttingamoderateamount
 onthemalethreadsonly.Ifpipesealantlodgesonthe
 regulatorseat,itwillpreventproperoperation.IfusingLP
 gas,usepipesealantratedforusewithLPgas.
• Donotthreadpipetoofar.Valvedistortionand/ormalfunc-
tionmayresultfromexcesspipeinthevalvebody.
• Applycounter pressureusinga paralleljawwrenchonly
totheatsontheangewhenscrewingthepipeintothe
anges.
• Donotovertightenthepipe.Followthemaximumtorque
valueslistedbelow.
• Afterinstallationiscompleteandpressureisapplied,per-
 formaleaktest.
6. Usea5mmAllenwrenchfortheFRI705/6&707/6.
7. FortheFRI710/6&712/6,theretwooptionsforbolts:
For 1” and 1 1/4” anges, the M8 x 35 mm bolts must
be used.
For 1 1/2” and 2” anges, the M8 x 40 mm bolts must
be used.
8. Tightenthescrewsinacrisscrosspattern.
9. Donotovertightenthescrews.Followthemaximumtorque
 valuesbelow.
10.Afterinstallationiscomplete,performaleaktest.
If the ow is not in the same direction of the
arrows the regulator will not operate properly.
Recommended Torque for Piping
” ” 1” 1” 1” 2” NPT
pipe
375 560 750 875 940 1190 [Ib-in]
Recommended Torque for Mounting Screws
M6 M8 Screw Size
62 134 [Ib-in]
Recommended Torque Screws
M6 M8 Screw Size
62 134 [Ib-in]
When rst applying pressure, open the inlet
manual shuto valve slowly. Quickly opening
the inlet manual shuto valve can permanently rup-
ture the internal, balancing diaphragm.

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Pressure Taps
FRI pressure ports
1, 2, 3 (Ports 2 and 3 are
locatedonange)
Port1isthreadtypeG⅛as
perDINISO228
Ports2and3arethreadtype
G⅛asperDINISO228
All ports can be used with
accessoriesorA2pressure
switches.

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Vent Limiting Device
TheFRI/6seriesregulatorcontainsaninternal,factoryin-
stalledventlimitingdevice,whichlimitstheescapeofgasto
lessthan0.5CFH@5PSIincaseatmosphericdiaphragm
ruptures.Ventingrequiredunlessacceptedbytheauthority
havingjurisdiction.
Vent Line Requirements
• Followthelocalcodeforventsizingandterminationre-
quirements.Intheabsenceoflocalcodes,followNational
FuelGasCodeNFPA54,theInternationalFuelGasCode
or the CSA B149.1 installation code for venting require-
ments.
• Terminatetheventtoanapprovedlocation.
• Atthepointoftermination,theventlinemustbeprotected
frominsectsandwaterintrusion.Itishighlyrecommend
toinstallaninsectscreenandterminatethepipewiththe
exitfacingdownwardstopreventrainwaterfromentering.
Installation Procedure
• Ifventingisrequired,theventlineistobeconnectedtothe
upperdomeoftheFRSregulatorasillustrated.
• Removethebeatherplug.
• Onindoorinstallationsrequiringventingoutdoors,runthe
pipingasshortandasdirectaspossible.
• TheventconnectionisG1/4.G1/4to1/4”NPTadapteris
available:(P/N231-944)withreplacablegasket(P/N171-260).
Vent Limiting Device & Vent Line Connection
In the absence of venting codes and where vent-
ing is required, each regulator must be vented
separately from all other vents.
Breather Plug
• AllFRS’shaveabreatherplugthatthreadsintotheregula-
tors’sventconnection.
Do not removed plastic breather plug unless venting
outdoors is required.
 Thisplugisnottheventlimiter,anditpreventsdebrisfrom
enteringtheupperchamberoftheregulator.Debrisinthe
upperchamberoftheregulatorwilladverslyaectregulator
performance.
• TheFRSregulatormustalsobeabletoexchangeairthrough
thebreatherholeinordertoproperlyregulate.Donotplug
thebreatherhole,andcleanitoutifnecessary.
Breather plug
Breather hole

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Start-Up
• Theinletandoutletshutovalvesshouldbothbeclosed.
• Slowlyopentheinletmanualshutovalvejustenoughto
 allowinletpressuretograduallybuilduptotheinletofthe
 regulatoruntilthesystemisfullypressurized.
• Slowlyopentheoutletshutovalve(s)toallowasmallow.
Set-Point Adjustment
1) Removetheblackadjusmentcover.
2) Toincreasetheoutletpressuresetpoint,turntheadjust-
mentspindleclockwisewithascrewdriver.
3) Todecreasetheoutletpressuresetpoint,turntheadjust-
mentspindlecounterclockwisewithascrewdriver.
4) Alwaysuseanaccuratepressuregaugeconnecteddown-
 stream from the regulator to measure the actual outlet
pressure.
5) Re-installblackadjustmentcover.
6) Afteradjustingthesetpointfornormaloperationverifythat
 thegaspressureregulatoroperatesasintended.
Outlet Pressure Spring Replacement
1. Removetheblackadjustmentcover.
2. Releasespringtensionbyturningtheadjustmentspindle
 completelycounterclockwisewithascrewdriver.
3. Removethealuminumcap.
4. Removeexistingspringandinsertnewspring.
5. Re-installadjustementspindleandadjusttodesiredoutlet
 pressure.Followthesetpointadjustmentinstructions.
6. Re-installtheadjusmentcover,andapplythenewoutlet
 pressurelabelprovidedwithnewoutletpressurerange
ontothenameplate.
Filter
• Inspectthelteratleastonceayear.
• Replacethelter if the pressuredropacrossthe lteris
morethan4”W.C.
• Replacethelter if the pressuredropacrossthe lteris
morethantwiceashighastherstinstallationinspection.
Filter Change
1. RemovetheFRI/6byfollowingthemountinginstructions
inreverseorder.
2. Removethesupportring.
3. Removethelterinsert.
4. Insertanewlterinsert.
5. Pressinthesupportring.
6. Re-installtheFRI/6followingthemountinginstructions.
7. Performafunctionandleaktest.
Operation & Maintenance
Quickly opening the inlet manual shuto valve
can permanently rupture the internal, balanc-
ing diaphragm.
D u r i n g s t a r t - u p , a p r e s s u r e g a u g e m u s t b e u s e d
t o r e a d t h e s e t p o i n t o f t h e r e g u l a t o r o u r l e t p r e s -
sure. After the safety shuto valves are closed, the
outlet pressure must not exceed the setpoint by more
than 30 %. If the outlet pressure exceeds 30 % of the
setpoint, see section on page 2 for lock-up pressure.
While adjusting the outlet pressure of the regu-
l a t o r, c o n  r m t h a t a d j u s t i n g t h e o u t l e t p r e s s u r e
does not create a hazard to the burner.
Head Injury Risk:
Never have head above or near the aluminum
cap when removing regulator spring. The spring ten-
s i o n c a n b e h i g h e n o u g h t o r a p i d l y e j e c t t h e a l u m i n u m
cap with a large force.
Adjustment cover
Adjustment spindle
for outlet pressure
adjustment
Aluminum Cap. Turn only
to remove outlet pressure
spring
Spring
Breather
plug
Outlet
pressure
label
Inlet Filter

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Regulator turndown characteristics
with gas lter / in regulated state.
Inlet pressure is 20 in. W.C. and outlet is set to 4 in. W.C.
Aproximate ow increase in CFH (natural gas) when removing the integral lter from the FRI.
Inlet Pressure 20 in. W.C.
Outlet Pressure 4 in. W.C.
Flow (CFH) of natural gas; s.p. 0.65 at 60°F
Pressure Drop (in. W.C.)
Max. Flow
Min. Flow
Turndown
Turndown
Turndown
Turndown
DensityofNaturalgas
Densityofgasused
f =
Type of gas Density
[kg/m3]s.g. f
Naturalgas 0.81 0.65 1.00
Butane 2.39 1.95 0.58
Propane 1.86 1.50 0.66
Air 1.24 1.00 0.80
Determining equivalent ow through valves using another gas
Vgasused = VNaturalgas x f
°°
At a pressure drop of: FRI 705/6 FRI 707/6 FRI 710/6 FRI 712/6
0.8in.W.C. 25CFH 50CFH 390CFH 765CFH
2.0in.W.C. 35CFH 70CFH 480CFH 940CFH
4.0in.W.C. 35CFH 75CFH 575CFH 1180CFH
8.0in.W.C. 35CFH 80CFH 700CFH 1510CFH
Flow Curve

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M/CD • Karl Dungs Inc. • FRI Gas Pressure Regulator • Edition 2015.02 • P/N 261 400
Order anges
separately.
Type Mounts to
DMV Type
NPT
Flanges
Order
No.
Dimensions [inch]
Dimensions[mm]
Weight
[lbs]
[kg]
a b c defgh
FRI705/6 DMV701 1/2"-1" 230-472 3.6
92
5.6
141
1.3
33
6.0
152
7.7
195
3.8
96
4.1
104
5.5
139
2.0
0,9
FRI707/6 DMV701 1/2"-1" 230-473 3.6
92
5.6
141
1.3
33
6.0
152
7.7
195
3.8
96
4.1
104
5.5
139
2.0
0,9
FRI710/6 DMV702/3 1"-2" 230-474 4.9
124
6.9/8.1
176/206
1.8
45
6.9
175
9.3
235
5.0
126
5.3
135
6.7
169
3.5
1,6
FRI712/6 DMV702/3 1"-2" 230-475 4.9
124
6.9/8.1
176/206
1.8
45
6.9
175
9.3
235
5.0
126
5.3
135
6.7
169
3.5
1,6
a
b
f
hg
c
e
d
approx.
1.60"/40mm
Requiredspace
formountingA2
pressureswitch
Fordimensionb
FRI710/712:1,11/4in.NPT=6.93"
FRI710/712:11/2,2in.NPT=8.11"
Requiredspacefor changingspring
Dimensions & Part Numbers
Spring color Outlet
Pressure
Range
FRI705
FRI707
1/2x1/2
FRI705
FRI707
3/4x3/4
FRI705
FRI707
1x1
FRI710
FRI712
1x1
FRI710
FRI712
11/4x11/4
FRI710
FRI712
11/2x11/2
FRI710
FRI712
2x2
Brown 2“-3.6“ 5-100 5-130 5-160 5-580 5-580 5-580 5-580
White 2“-5.2“ 5-100 5-130 5-160 5-580 5-580 5-580 5-580
Orange 2“-8“ 5-200 5-220 5-240 5-1,500 5-1,500 5-1,500 5-1,500
Blue 4“-12“ 5-300 5-350 5-400 5-1,700 5-1,700 5-1,800 5-2,000
Red 10“-22“ 5-500 5-600 5-700 5-2,000 5-2,100 5-2,200 5-2,400
Yellow 12“-28“ 5-600 5-700 5-850 5-2,200 5-2,300 5-2,500 5-2,700
Black 24“-44“ 5-700 5-850 5-1,000 5-3,000 5-3,200 5-3,500 5-3,700
Pink 40“-60“ 5-800 5-1,000 5-1,200 5-4,000 5-4,100 5-4,300 5-4,700
CSA Range of Regulation (Flow Rates in CFH of Natural Gas)