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ManualsBrandsCaleffi ManualsBoiler System AccessoriesAir & Dirt Separator, 6" Flange Connections

DISCAL

air and dirt separator

series 546 and NA546

Function

Air and dirt separators are used to continuously remove the air and

debris contained in the hydronic circuits of heating and cooling

systems. The air discharge of these devices is very high. They

are capable of automatically removing all of the air present in the

system down to the micro-bubble level. The DISCALDIRT

air and

dirt separator also separates any solid impurities in the system. The

impurities collect at the bottom of the device and can be removed

through the drain pipe for the steel versions, to which a separately

sourced drain valve can be mounted, or drain shut-off cock for the

brass version. The circulation of fully de-aerated and cleaned water

enables the equipment to operate under optimum conditions, free

from noise, corrosion, localized or mechanical damage.

Technical specification

Brass DiscalDirt

Materials: - Body: brass

- Dirt separation chamber: brass

- Automatic air vent body: brass

- Internal element: Glass reinforced nylon, PA66GF30

- Float: PP

- Float guide: brass

- Stem: brass

- Float lever: stainless steel

- Spring: stainless steel

- Seals: EPDM

- Drain shut-off valve: brass

Suitable fluids: water, glycol solution

Max percentage of glycol: 50%

Max working pressure: 150 psi (10 bar)

Temperature range: 32–230°F (0–110°C)

Particle separation capacity: to 5 µm (0.2 mil)

Connections: - Main:3/4” and 1” sweat union; 1” NPT male union;

1-1/4" integral sweat

- Drain shut-off valve: hose connection

Steel DiscalDirt

Materials: - Body: epoxy resin painted steel

- Automatic air vent body: brass

- Internal element: stainless steel

- Float: PP

- Float guide: brass

- Stem: brass

- Float lever: stainless steel

- Spring: stainless steel

- Seals: EPDM

- Side drain shufoff valve: brass

Suitable fluids: water, glycol solution

Max percentage of glycol: 50%

Max working pressure: 150 psi (10 bar)

Temperature range: 32–250°F (0–120°C)

Particle separation capacity: to 5 µm (0.2 mil)

Connections: - Flanged (ASME & CRN Registered):

2”–12” ANSI B16.5 150 CLASS RF

- Flanged: 2”–6” ANSI B16.5 150 CLASS RF

- Threaded: (ASME and CRN Registered) 2”–4”

- Drain pipe: 2”–6” : 1” NPT male

8”–12” : 2” NPT male

CALEFFI

Product range

Series 546 DISCALDIRT air and dirt separator in brass Sizes 3/4” and 1” sweat union

Series 546 DISCALDIRT air and dirt separator in brass Size 1-1/4" integral sweat

Series 546 DISCALDIRT air and dirt separator in brass Size 1” NPT male union

Series 546 DISCALDIRT air and dirt separator in steel with flanged connections Sizes 2”–6” ANSI

Series NA546 DISCALDIRT air and dirt separator in steel with flanged connections designed and built in accordance with Section VIII,

Division 1 of the ASME Boiler and Pressure Vessel Code and tagged and registered with the National Board of Boiler and

Pressure Vessel Inspector; CRN registered Sizes 2”–12” ANSI

Series NA546 DISCALDIRT air and dirt separator in steel with threaded connections designed and built in accordance with Section VIII,

Division 1 of the ASME Boiler and Pressure Vessel Code and tagged and registered with the National Board of Boiler and

Pressure Vessel Inspector; CRN registered Sizes 2”–4”

01123/11.1 NA

Replaces 01123/11 NA

BSI EN ISO 9001:2000

Cert. n∞ FM 21654

UNI EN ISO 9001:2000

Cert. n∞ 0003

Summary of content (6 pages)

PAGE 1
DISCALD DIRT ® air and dirt separator CALEFFI RE G IS D series 546 and NA546 TERE BSI EN ISO 9001:2000 Cert. n∞ FM 21654 UNI EN ISO 9001:2000 Cert. n∞ 0003 01123/11.1 NA Replaces 01123/11 NA Function Air and dirt separators are used to continuously remove the air and debris contained in the hydronic circuits of heating and cooling systems. The air discharge of these devices is very high. They are capable of automatically removing all of the air present in the system down to the micro-bubble level.
PAGE 2
Dimensions B F C C H D A F E A 38552 D E 3 1/8” G B C D E F Weight (lb) Weight (kg) A *546050A 2” B C D E F G Cap. (gal) H Weight (lb) Weight (kg) 13 3/4” 2 3/16” 14 3/4” 28 1/4” 6 5/8” 1” 12 1/2” 3.6 39.7 18.0 Code Connections A 546095A Sweat union 3/4” 7 3/8” 2 1/8” 5” 5 1/2” 12 3/4” 8.3 3.8 *546080A 3” 18 3/8” 2 3/16” 17 1/8” 34 1/2” 8 5/8” 1” 16 5/16” 7.6 72.7 33.1 546096A Sweat union 1” 7 3/8” 2 1/8” 5” 5 1/2” 12 3/4” 8.3 3.
PAGE 3
The process of air formation Boiler micro-bubbles The amount of air which can remain dissolved in a water solution is a function of pressure and temperature. This relationship is governed by Henry’s law and the graph demonsrates the physical phenomenon of the air release from water. As an example, at a constant absolute pressure of 30 psi (2 bar), if the water is heated from 65ºF (18ºC) to 170ºF (75ºC), the amount of air released by the solution is equal to 1.8 gallons of air per 100 gallons of water.
PAGE 4
The particle separation - dirt separator efficiency graph on the previous page illustrates how DISCALDIRT quickly separates nearly all the impurities. After only 50 circulations, approximately one day of operation, up to 100% is effectively removed from the circuit for particles of diameter greater than 100 µm (3.9 mil) and on average up to 80% taking account of the smallest particles. The continual passing of the medium during normal operation of the system gradually leads to complete dirt removal.
PAGE 5
4 1 1 Construction details A separately-sourced drain valve installed to the drain pipe at the base of the steel DISCALDIRT air and dirt separator (8) can be used to remove any debris that has settled at the bottom2of the separator, even with the system is in operation. To inspect the internal element of brass DISCALDIRT air and dirt separators, unscrew the large dirt separation chamber 3 (6) with a 26 mm hexagon wrench. The internal element can be removed for cleaning.
PAGE 6
Installation DISCALDIRT units may be used in both heating and cooling systems, to ensure continuous air and dirt elimination. The units should be installed after the boiler and on the pump suction side, as these are the points where the formation of micro-bubbles is greatest. DISCALDIRT air and dirt separators must be installed vertically.