Gruppo di sicurezza per scaldacqua ad accumulo
Safety unit for hot water storage heaters
Groupe de sécurité pour chauffe-eau
Veiligheidsgroep voor boiler
I
EN
FR
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Funzione
Function
Fonction
Functie
I gruppi di sicurezza sono dispositivi utilizzati negli impianti idrosanitari per la
protezione degli scaldacqua ad accumulo.
The safety groups are used in domestic water systems to protect hot water storage
heaters.
Les groupes de sécurité sont des dispositifs utilisés dans les installations sanitaires
pour protéger les chauffe-eau.
Veiligheidsgroepen zijn toestellen die toegepast worden in warmwaterinstallaties ter
bescherming van de boiler.
5265
54
DN 20 (3/4”)
319
601
1” F x Ø 32/25 mm
5265
319
5265 series
© Copyright 2019 Caleffi
Technical
specification
Product range
Materials:
- Body safety unit:
DN 20 brass EN 12165 CW617N
- Body safety relief valve:
PPSU
- Ball valve:
brass EN 12164 CW614N
- Check valve:
PPAG40
- Safety relief valve obturator:
EPDM
- Safety relief valve seat:
PPSU
- Seals:
EPDM
- Safety relief valve spring:
stainless steel EN 10270-1
- Check valve spring:
stainless steel EN 10270-3 (AISI 302)
Medium: water
Max. inlet water temperature
65 °C
Max. working temperature:
120 °C
Max. working pressure:
10 bar
Safety relief valve opening pressure:
7 bar
Connections:
inlet 3/4” M; outlet 3/4” F; discharge 1” M (ISO 228-1)
Discharge flow rate at 8,4 bar (+20 % Po): - with water:
> 650 l/h
- with steam:
> 225 kg/h
H0007429
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Size of the
hydraulic safety
group
Maximum power output of
the water heater
- - - - - - - - - - - -
for direct heating systems
EN 1487
Maximum power output of the
water heater
- - - - - - - - - - - -
for indirect heating systems
EN 1488
Maximum volume of
the water heater
EN 1488
DN 20
10 kW
150 kW
1000 l
For further details see EN 1487 - clause 12.
B531003
