Honeywell E121S User Manual
EN0H-1365GE23 R1108 • Subject to change
E121S
Automatic air vent for solar installations
Product specification sheet
Application
Construction
The automatic air vent comprises:
•Lid
•Housing
•Floater with spring
•Valve seat seals
Materials
•Brass housing
•Brass lid
•High grade, heat-resistant synthetic material float
•Stainless steel spring
•Temperatureand aging-resistant elastomer sealing parts
The air vent is used to automatically ventilate fluid-filled systems, preferably in solar installations.
Air in heating systems and other fluid-filled systems frequently causes disruptions in water cycles, as well as corrosion and noise. Therefore pay particular attention to a good ventilation.
Special Features
•Absolutely drip free
•Long-term reliability
•High ventilation capacity
•Cleaning or exchange of the sealing and internal parts after additional installation of the AVSOLAR shutoff valve is possible without emptying the system
•Extremely quick reaction
•Particularly compact
Range of Application
Medium Water
Medium temperature max. 150 °C
Not suitable for steam.
Technical Data |
|
Nominal pressure |
max.10 bar |
Operating pressure |
0,5 - 10 bar |
Connection size |
R 3/8" and R 1/2" |
www.honeywell.com 1
E121S Automatic air vent for solar installations
A
H
|
|
B |
|
SW |
G |
|
|
|
|
|
|
Connection size |
G |
3/8" |
1/2" |
Dimensions |
mm |
|
|
|
A |
47 |
47 |
|
H |
82 |
82 |
|
B |
10.5 |
10.5 |
|
SW |
23 |
23 |
Weight |
kg |
0.4 |
0.5 |
Method of Operation
Inside the automatic air vent there is a floater which operates a lever according to the water level. When there is no water in the housing, then the floater opens the valve. Air can therefore be vented from the heating system during filling. When the heating system has been filled, the inflowing water closes the valve and the vent is shut off. Water usually contains oxygen which bubbles off during operation of the system and collects at the highest point. The automatic air vent must therefore be fitted at the air collection position (highest point on a boiler or pipework circuit).
Options
E121S...A = Standard version
Connection size
Accessories
Shutoff valve
Brass housing, high-grade, temperature-resistant plastic internal parts, hot water-resistant elastomer sealing ring
for 3/8" |
AVSOLAR-3/8 |
for 1/2" |
AVSOLAR-1/2 |
Automation and Control Solutions
Honeywell GmbH Hardhofweg D-74821 Mosbach Phone: (49) 6261 810 Fax: (49) 6261 81309
http://europe.hbc.honeywell.com
www.honeywell.com
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorised Representative Honeywell GmbH
EN0H-1365GE23 R1108 Subject to change without notice © 2008 Honeywell GmbH
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