Instructions

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

Function

Air and dirt separators are used to continuously remove the

air and debris contained in the hydronic curcuits 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 valve 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

mechancial damage.

DISCALDIRT

air and dirt separator

38557.02

Installation, commissioning and servicing instructions

www.caleffi.com

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” NPT male union

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

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

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”

546 Series

Summary of content (8 pages)

PAGE 1
CALEFFI 38557.02 www.caleffi.com DISCALDIRT® air and dirt separator 546 Series Installation, commissioning and servicing instructions Function Air and dirt separators are used to continuously remove the air and debris contained in the hydronic curcuits 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.
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Technical specification Brass DiscalDirt Materials: - Body, Dirt separation chamber and Automatic air vent body: brass - Internal element: glass reinforced nylon, PA66GF30 - Float: PP - Float guide and Stem: brass - Float lever and Spring: stainless steel - Seals: EPDM - Drain shut-off valve: brass Suitable fluids: Max percentage of glycol: Max working pressure: Temperature range: Particle separation capacity: Connections: water, glycol solution 50% 150 psi (10 bar) 32–230°F (0–110°C) to 5 µm (0.
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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: All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.
PAGE 4
Operating principle The air and dirt separator uses the combined action of several physical principles. The active part consists of an assembly of concentric metal mesh surfaces. These elements create the whirling movement required to facilitate the release of micro-bubbles and their adhesion to these surfaces. The bubbles, fusing with each other, increase in volume until the hydrostatic thrust is such as to overcome the adhesion force to the structure.
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10” 12” 8” 6” 5” 4” 3” 2 1/2” 2” 1 1/4” ∆P (ft of water) 2 1” 3/4” Hydraulic characteristics 1.8 1.6 1.4 (ft of water) (kPa) 6 2 1.8 1.6 1.4 5 4.5 4 3.5 1.2 1.2 1 1 0.6 0.6 0.5 0.5 0.3 0.3 0.25 0.25 0.2 0.2 0.12 0.12 0.1 0.1 0.06 0.06 0.05 0.05 0.035 0.03 0.035 0.03 0.025 0.025 0.02 0.02 0.9 0.8 0.7 3 0.9 0.8 0.7 0.45 0.4 0.35 2.5 2 1.8 1.6 1.4 0.45 0.4 0.35 0.18 0.16 0.14 1.2 1 0.9 0.8 0.7 0.6 0.18 0.16 0.14 0.09 0.08 0.07 0.5 0.45 0.4 0.35 0.3 0.
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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.
PAGE 7
Maintenance The DISCALDIRT air and dirt separator is designed to be maintained and cleaned without removing it from system piping. The automatic air vent, located at the top of the device, has a long chamber for float movement (2). This prevents any impurities in the water from reaching the seal seat. The non-corroding stainless steel pinned linkage and PP float can be accessed by removing the upper cover (1).
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CALEFFI Caleffi North America, Inc. 3883 W. Milwaukee Road Milwaukee, WI 53208 T: 414.238.2360 F: 414.238.