Taco 4900 Series Installation, Operation & Maintenance Manual

Installation, Operation & Maintenance Manual
SUPERSEDES: New
Plant ID No. 001-1185
GENERAL
All Taco 4900 series separators are designed and fabricat-
ed in accordance with the ASME Code for Unfired
Pressure Vessels, Sect. VIII Div. 1.
Prior to shipment all separators are hydrostatically tested
to 1.3 times their rated working pressure and accepted by
an independent insurance inspector.
Each 4900 series separator is shipped in a container
designed to protect the unit during handling. Upon receipt
of each separator, the shipping container should be exam-
ined for external damage. If the shipping container has
been damaged in transit, the contents of the packaging
should also be examined prior to acceptance of the ship-
ment. If the separator appears to be damaged the shipment
should be refused and or signed for as damaged. If the
separator is damaged, the local Taco representative
should be contacted for further instructions.
INSTALLATION
4900A (Air Separators)
Taco 4900A series separators are designed for installation
in hydronic systems. The purpose of the 4900A separator
is the removal of air from the heating or chilled water sys-
tem. In a heating system application the separator should
be mounted in the piping as close as possible to the exit
of the boiler and prior to the pumps in the system. Each
separator has been designed to support its own weight
when installed in the piping system. These units are not
designed to withstand external piping loads which may be
transmitted to the nozzles from the piping system. Should
external piping loading requirements be present, confir-
mation from Taco's Design Engineering department
regarding the suitability of the separator's design should
be obtained prior to installing this product.
When separators are installed, care should be taken to
allow access to the ASME name plates, air vent (located
at the top of each separator), flushing cock (located at the
side of each unit) and drain plug (installed in the bottom of
each unit).
All piping to each separator should be installed full size, to
match the vessel's connections, isolation valves on each
side of the unit should be installed for future maintenance.
The isolation valves are used during maintenance to
reduce the loss of system fluid.
4900 Series Air Separators
4900 Series Air and Dirt Separators
4900AD (Air and Dirt Separators)
Taco 4900AD series separators are designed for installation
in hydronic systems. The purpose of the 4900A separator is
the removal of air and dirt from the heating or chilled water
system. In a heating system application, the separator
should be mounted in the piping as close as possible to
the exit of the boiler and prior to the pumps in the system.
Each separator has been designed to support its own
weight when installed in the piping system. These units
are not designed to withstand external piping loads which
may be transmitted to the nozzles from the piping system.
Should external piping loading requirements be present,
confirmation from Taco's Design Engineering department
regarding the suitability of the separator's design should
be obtained prior to installing this product.
When separators are installed, care should be taken to
allow access to the ASME name plates, air vent (located
at the top of each separator), and flushing cock (located at
the side of each unit). On 4900AD air and dirt separators
the drain/blowdown valve located at the bottom of the unit
should be piped to drain. This connection should be piped
with a full port shutoff valve to a nearby drain during instal-
lation.
All piping to each separator should be installed full size, to
match the vessel's connections, isolation valves on each
side of the unit should be installed for future maintenance.
The isolation valves are used during maintenance to
reduce the loss of system fluid.
INITIAL SYSTEM FILL
WARNING:
Prior to the initial filling of the system the automatic vent
installed in the top of the separator should be closed to
prevent system debris from fouling the venting mechanism.
The automatic vent may be manually closed by turning the
orifice screw located in vent face clockwise until seated.
Additionally, the flushing cock installed on the side of the
separator should be opened to allow the air within the sys-
tem to exit during the system filling process. The flushing
cock should be closed when system fluids first appear to
exit the separator from the flushing cock. Upon the comple-
tion of the system filling process the orifice of the automatic
vent should be re-opened by turning the screw 1 and 1
turns counter-clockwise. Do not overturn the screw beyond
1
1 and 1 ⁄ turns.
2
402-080
EFFECTIVE: October 1, 2003
1
⁄
2