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PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
IMPORTANT GENERAL SAFETY INFORMATION - ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.
THIS PRODUCT MUST BE INSTALLED BY A
QUALIFIED PROFESSIONAL.
Installation
1. Refer to Figure 1 for proper installation of the Amtrol AS or Figure 2 for
the ASL air separator.
Wet weight of the separator can exceed
strength of supports. Make sure provisions are
made to support the wet weight and not just the dry weight (see
weight chart below). Failure to follow these instructions may result
in serious or fatal personal injury and/or property damage.
2. AS or ASL sizes through the 8-AS or 8-ASL can be supported in the
piping system as long as pipe hangers are attached to the tangential
nozzles as close to the unit's shell as possible. Sizes larger than the
8-AS or the 8-ASL will need to have additional support, such as the
stand provided on all units, sizes 5-AS or 5-ASL or larger. Factory
installed seismic restraints are optional.
Welding to the pressure vessel boundary will
void the ASME rating.
3. Model AS air separators have strainers, which must be removed and
cleaned after 24 hours of operation, 30 hours of operation and as required
to maintain proper air separation. Before installing the model AS refer to
clearance chart for minimum distances to be maintained between the blind
flange and any wall or other obstruction for strainer removal.
4. A manual blowdown valve (MBV) can be added to the blowdown
connection at the bottom of the tank. The function of the MBV is to
facilitate the purging of sediment from the vessel.
Maintenance
A qualified professional should check the complete system, including
the air separator, yearly and more frequently as the system ages.
Leakage, corrosion or indications of damage are
signs of an impending serious failure of the air
separator. Periodically inspect for damage and, if noted, the separator
must be serviced or replaced immediately. Failure to follow these
instructions may result in serious or fatal personal injury and/or
property damage.
The strainer in the AS series separator may need to be cleaned
periodically. This is particularly true during the initial start-up period. The
need to clean the strainer will be evidenced by a high pressure drop across
the separator or by pump cavitation problems. To clean the strainer:
1. Allow the system water temperature to cool below 100°F.
Water temperature above 100°F can be very
hazardous. Allow system water temperature
to cool down below 100°F before blowing down the separator.
Failure to follow these instructions may result in serious or fatal
personal injury and/or property damage.
2. Open the blowdown drain valve for a few seconds. This should
dislodge accumulated dirt from the strainer. If it does not, then the
strainer must be removed from the separator for cleaning. Start by
closing the isolation valve to isolate the separator from the system.
Next, open the blowdown valve on the bottom of the separator to drain
the unit. Make sure that all of the flow from the blowdown valve has
stopped. If water continues to flow, the isolation valve must be repaired
or replaced before proceeding.
System fluid under pressure and/or high
temperature can be very hazardous. Before
proceeding to service the strainer, reduce system pressure to
zero and isolate the separator from the system. Allow system
temperature to cool below 100°F. Failure to follow these
instructions may result in serious or fatal personal injury and/or
property damage.
3. Remove the flange bolts that hold the blind flange in place on the side
of the tank. Remove the blind flange and slide the strainer out of the
tank. Clean the strainer and reinstall in the separator. Replace the
flange gasket with a new one and reinstall blind flange making sure
that the flange bolts are tightened in a criss-cross pattern to 40-50 foot
pounds. Close the blowdown valve and open the isolation valves to
return to normal operation. Check the gasket for signs of leakage. If
found, additional slight tightening of bolts may be required.
© 2016 AMTROL Inc.
Suggested Piping Diagrams
Figure 1: AS Series
Figure 2: AS-L Series
Warranty
AS(L) Series Models: One (1) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
1400 Division Road, West Warwick, RI 02893 USA
T: 800.426.8765
F: 800.293.1519
www.amtrol.com
Air
Vent
Shut Off
AS
Valve
Series
AIR
SEPARATOR
A
Clearance To
Remove Strainer
Circulator
Blow
Down
EXTROL
®
Expansion
Tank
Air
Vent
AS-L
Series
AIR
SEPARATOR
System
Supply
Flow-Check
Circulator
Valve
EXTROL
®
Expansion
Tank
Clearance to
Remove Strainer
Model
A
Number
(Inches)
1-ASL
2-AS
12
2-AS(L)
2½-AS
13
2½-AS(L)
3-AS
15
3-AS(L)
4-AS
17
4-AS(L)
5-AS
22
5-AS(L)
6-AS
24
6-AS(L)
8-AS
30
8-AS(L)
10-AS
36
10-AS(L)
12-AS
45
12-AS(L)
14-AS
49
14-AS(L)
16-AS
59
16-AS(L)
18-AS
62
18-AS(L)
20-AS
70
20-AS(L)
22-AS(L)
24-AS
80
24-AS(L)
System
Purge
System
Return
Pressure-
Relief
Valve
Boiler
Pressure-
Reducing
Backflow
Valve
Preventer
Water
Supply
Shut Off
Valve
Shut Off
System
System
Valve
Purge
Return
Pressure-
Relief
Valve
Boiler
Weight Chart
Model
Dry Weight
Wet Weight
Number
(lbs)
(lbs)
15
20
70
100
70
110
75
140
80
195
180
400
250
575
455
1,175
770
2,075
1,150
3,200
2,200
4,800
4,300
7,275
4,900
10,300
5,600
12,375
6,500
13,950
8,000
23,250
Part #: 9017-111 (03/16)
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