CALEFFI 553 Series Manual Download | Manualshive

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background image

Installation diagram

5

MAINS

SUPPLY

Drain

Vent

Floor

Air gap

BACKF

LO

W PREV

Series:

5

73

Sizes:

1/2”

-

3/4

”

S/

N

VENT

BACKF

LO

W PREV

E

Series:

573

Sizes:

1/2”

-

3/4”

S/

N

VENT

Heating system application

MAINS

SUPPLY

Upstream

test cock

Upstream

shut-off valve

Downstream

shut-off valve

Downstream

test cock

Inlet test

cock

Backflow preventer

573 series

Y-strainer

BACKF

LO

W PRE

V

Series

:

5

73

Sizes:

1/2”

-

3/4

”

S/

N

VENT

Field testing installation

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Summary of Contents for 553 Series

Page 1: ...c vent which is designed to protect drinking water systems from return flow caused by back siphoning or back pressure of contaminated fluids The 573 series has been specifically certified to standards CSA B64 3 and ASSE 1012 Pre adjustable filling units 553 Series 38467 03 www caleffi com Copyright 2015 Caleffi 553542A M NPT inlet x F NPT outlet 553549A sweat inlet x F NPT outlet 553642A M NPT inl...

Page 2: ...ll applicable codes and ordinances SAFETY INSTRUCTION This safety alert symbol will be used in this manual to draw attention to safety related instructions When used the safety alert symbol means ATTENTION BECOME ALERT YOUR SAFETY IS INVOLVED FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD CAUTION If the automatic filling unit is not installed commissioned and maintained properl...

Page 3: ...lling the internal mechanism will automatically regulate the pressure until it reaches the required value without the need to oversee the filling operation itself This prevents the system being charged to a higher pressure than required 5 Given the pre calibrating function the presence of the downstream pressure gauge is not essential 6 When the system is filled the shut off valve can be closed In...

Page 4: ...all valve BALLSTOP Thermometer Differential by pass valve Flow switch Zone valve Pump FlowCal Flow meter Temperature probe Safety thermostat Regulator Expansion vessel 3 way valve Pressure switch Control pocket Gas filter Gas regulator Air separator Fuel shut off valve Anti vibration joint Sensor pocket Safety valve Y strainer P A T F T T T T P A F BACKFLOW PREV Series 573 Sizes 1 2 3 4 S N VENT 4...

Page 5: ...th atmospheric vent size 1 2 3 4 NPT female threaded connection with union size 1 2 sweat connection with union Backflow preventer with intermediate atmospheric vent 38517 05 Installation commissioning and servicing instructions Technical characteristics Connections 1 2 3 4 NPT female with union 1 2 SWT with union Materials Body low lead brass Filter stainless steel Check valve PSU Check valve ste...

Page 6: ...ecting pipework is water tight ATTENTION S assurer que tous les raccordements sont étanches CAUTION When making the water connections make sure that the backflow preventer connecting pipework is not mechanically over stressed Over time this could cause breakages with consequent water losses which in turn could cause harm to property and or people ATTENTION Lorsque vous effectuez les raccordements ...

Page 7: ...3 Flow rate graph 10 2 5 10 5 20 50 Dp psi G l min gpm 20 10 5 psi bar 20 1 0 5 10 2 5 15 1 0 5 0 3 Cv 0 7 VENT ...

Page 8: ... horizontally and following the flow direction indicated by the arrow on the valve body The Caleffi 573 series backflow preventer must be installed with one isolating valve and a strainer upstream and one isolating valve downstream The Caleffi 573 series backflow preventer must be installed in an accessible location to facilitate testing and servicing The Caleffi 573 series backflow preventer must...

Page 9: ...BACKFLOW PREVE Series 573 Sizes 1 2 3 4 S N VENT Heating system application MAINS SUPPLY Upstream test cock Upstream shut off valve Downstream shut off valve Downstream test cock Inlet test cock Backflow preventer 573 series Y strainer BACKFLOW PREV Series 573 Sizes 1 2 3 4 S N VENT Field testing installation ...

Page 10: ...eam side of the valve the internal second check valve must close back drip tight on its seat a close shutoff valves upstream and downstream b open the upstream test cock c install a removable bypass hose connecting inlet test cock to downstream test cock and open them for admitting pressure to the downstream side of the internal second check valve Water must not drip from the vent port indicating ...

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