Install Instructions

ManualsBrandsCaleffi ManualsAir Eliminators3/4" NPT Female DISCAL Air Separator

Function

Air separators are used to continuously remove the air contained

in the hydronic circuits of heating and cooling systems. The air

discharge capacity of these devices is very high. They are capable

of removing automatically all the air present in the system down to

micro-bubble level.

The circulation of fully de-aerated water enables the equipment

to operate under optimum conditions, free from any noise,

corrosion, localized overheating or mechanical damage. Micro-

bubbles, fusing with each other, increase in volume (get larger)

until they become large enough to rise to the top where they are

automatically released.

Product range

551 series DISCAL

™

air separator for horizontal pipes, in brass compact with drain

Sizes 3/4” sweat; 3/4” NPT female

551 series DISCAL

™

air separator for horizontal pipes, in brass with drain

Sizes 3/4” - 1” - 1 1/4” - 1 1/2” - 2” NPT female; 1” - 1 1/4” - 1 1/2” - 2” sweat

551 series DISCAL

™

air separator for horizontal pipes, in steel with flanged connections with drain

Sizes 2” – 6” ANSI

NA551 series DISCAL

™

air separator for horizontal pipes, in steel with flanged connections with drain

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

Sizes 2” – 6” ANSI

NA5519 series DISCAL

™

air separator for vertical pipes, in brass compact with drain

Sizes 3/4” and 1” integral sweat

DISCAL

™

air separator 551 - NA551 - NA5519 series

Installation, commissioning and servicing instructions

38456.07

www.caleffi.com

CALEFFI

Summary of content (8 pages)

PAGE 1
CALEFFI www.caleffi.com 38456.07 DISCAL™ air separator 551 - NA551 - NA5519 series Installation, commissioning and servicing instructions Function Air separators are used to continuously remove the air contained in the hydronic circuits of heating and cooling systems. The air discharge capacity of these devices is very high. They are capable of removing automatically all the air present in the system down to micro-bubble level.
PAGE 2
Technical specifications Brass air separator Materials - body: brass - internal element (compact & vertical versions): 304 stainless steel - internal element: glass reinforced nylon PA66GF30 - seal: EPDM - air vent float guide pin: stainless steel Performance Suitable fluids: Max. percentage of glycol: Max.
PAGE 3
Working Pressure & Temperature Limits (Solder Type Limits Per ASTM Std. B16.18-1979) FLOW-CONTROL STYLE TYPE OF SOLDER SWEAT MAXIMUM LIMITATIONS PRESSURE PSI TEMPERATURE °F 95-5 Tin-Antimony 150 250 50-50 tin-Lead 125 150 60-40 tin-Lead 75 250 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.
PAGE 4
(ft of hd) (kPa) 1 3 6” 5” 4” 3” 2 1/2” 2” 2” Steel 1 1/2" 1 1/4" ∆P (ft of hd) 1 1" 3/4" C 3/4" 3/4" - 1" Vertical version Hydraulic characteristics 0.9 0.8 0.7 0.9 0.8 0.7 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 0.45 0.4 0.35 0.45 0.4 0.35 0.18 0.16 0.14 0.18 0.16 0.14 0.09 0.08 0.07 0.09 0.08 0.07 1000 2.0 1.8 1.6 1.4 1.2 1.0 0.9 0.8 0.7 0.6 0.5 0.45 0.40 0.35 0.
PAGE 5
Installation DISCAL™ units may be used in heating or cooling systems to ensure the progressive removal of air which is continuously formed. The units should preferably be installed after the boiler and on the pump suction side, as these are the points where the formation of micro-bubbles is greatest. DISCAL™ air separators for horizontal pipes must be installed vertically. Flow direction of the DISCAL™ air separator is bidirectional: flow in either direction is permitted.
PAGE 6
Construction details residue in the flowing fluids, even when the DISCAL™ air separator is not installed perfectly vertical. DISCAL™ air separators are designed to allow maintenance and cleaning without having to remove the valve body from the pipework. All DISCAL™ air separators (except vertical versions) come standard with a bottom connection for installing a drain valve. All internal air release control components are fully accessible in all the models.
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Accessories Item Code Description 561402A Check valve for expansion tanks. 1/2" NPT connections. R59681 Hydroscopic safety vent cap. 562100 Small anti-vacuum vent cap. 59119 Replacement DISCAL™ air vent cap. Caleffi North America, Inc. 3883 West Milwaukee Road Milwaukee, WI 53208 T: 414.238.2360 F: 414.238.