CALEFFI 543 Series Manuale utente

Temperature safety relief valve

543 series

General description

Temperature safety relief valves are manufactured by Caleffi S.p.A. in

compliance with the essential requirements contained in Directive

97/23/EC of the European Parliament and of the Council of the

European Union to harmonise member state regulations on pressure

equipment.

Function

The temperature safety relief valves limit the temperature of water

in multi-fuel or solid fuel boilers with either a boiler incorporated or

an emergency heat exchanger.

When the temperature reaches 95°C, the valve starts to discharge

the necessary amount of water to keep the boiler temperature

within the safety limits.

Its use is specified by I.S.P.E.S.L. regulations (collection “R” - pub-

2005), it complies with EN 14597 and can be used on systems that

comply with EN 12828, relating to solid fuel boilers with a power

output of less than 100 kW.

Technical specification

Materials:

Body: brass EN 12165 CW617N, chrome plated

Control spindle: brass EN 12164 CW617N

Obturator seal: EPDM

Seals: EPDM

Spring: stainless steel

Protection cover: POM

Performance:

Max. working pressure: 10 bar

Set temperature: 95°C

Temperature range: 5–110°C

Discharge flow rate at 110°C and Δp 1 bar: 3000 l/h

Ambient temperature range: 0–80°C

Action type (EN 14597): 2 KP

Max. temperature of the sensor: 130°C

Medium: water

PED category: IV

Connections: 3/4” F x 3/4” F

Probe connection: 1/2” M

Capillary length: 1300 mm

Dimensions

CALEFFI

Product range

Code 543513 Temperature safety relief valve Size 3/4”

01057/07 GB

replaces dp 01057/05

BSI EN ISO 9001:2000

Cert. n°FM 21654

UNI EN ISO 9001:2000

Cert. n°0003

3/4”

Ø 40

Ø 42

Code

543513

Weight (kg)

1,06

1/2”

197

1115

Code 543513

Temperature safety relief valve. EC certified and approved to German DIN standards. Redundant safety sensor. Connections 3/4”

F. Chrome plated brass body. Stainless steel spring. EPDM seals. Temperature range 5 –110°C. Nominal set temperature 95°C.

Maximum working pressure 10 bar. Complete with 1/2” M remote probe with pocket. Length of capillary 1300 mm.

SPECIFICATION SUMMARIES

Operating principle

When the temperature rises, the fluid contained within the sensor

(1) undergoes a change of state from liquid to gas. The consequent

volume increase creates a mechanical movement causing the

expandable bellows (2), inside the valve, to push on the obturator

and lift it up.

Construction details

Redundant expansion system

The entire expansion system has a built-in

redundancy (1)-(2) to ensure maximum

safety, so if one part of the sensor system

fails the other part will perform the same

functions as the entire sensor.

Pocket and capillary tubes

The size of the pocket is such that it is always in contact with the

sensors, which improves heat transmission and keeps thermal

inertia to a minimum. The capillary tubes are protected by a

galvanized sheath.

Bellows holder support

The bellows holder support is made of

acetalic resin and can be repositioned by

loosening the knurled lock nut.

Drain

The lower part of the valve contains a button

in order to drain the system.

1 2

➩

We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.

CALEFFI S.P.A. · I · 28010 FONTANETO D’AGOGNA (NO) · S.R. 229, N.25 ·TEL. +39 0322 8491 R.A. ·FAX +39 0322 863723

· www.caleffi.com ·info@caleffi.com ·

CALEFFI

Installation

DOMESTIC

water supply

safety

discharge

mains

inlet

Hot

water

storage

safety

discharge

mains

inlet

The sensor should be mounted at the top of the boiler or on the

outlet piping upstream of any isolating device and at a maximum

distance of 0,5 m.

1. After mounting the valve on the pipe, according to the flow

direction indicated on the valve body, place the part connected

to the sensor in its seat.

2. Loosely tighten the knurled lock nut.

3. Position the sheath outlet that connects the probe by turning the

black cap. Completely tighten the knurled lock nut.

Installation of

the temperature

safety relief valve

in boilers with

built-in heater.

Installation of

the temperature

safety relief valve

in the emergency

heat exchanger.

Accessories

We recommend

inserting a visible

discharge tundish

(5521 series Caleffi)

when connecting the

device to the

discharge pipe.

123

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