installation &
operating instructions
Design Envelope
4300
&
4380
Vertical In-line Pumping Unit
5
will not free-stand on the casing ribs. Extra care is required to
ensure the integrated controls do not get damaged during lift-
ing and installation.
As the lifting device is engaged (Using a spacer bar if neces-
sary) and the straps tighten ensure no part of the strapping is
touching any part of the control or motor fan cover.
fig. 1.1.6
important:
Do not run the pump for any length of time under very
low flow conditions at the maximum speed or with the
discharge valve closed.
To do so could cause the water in the casing to reach super
heated steam conditions and will cause premature failure and
could cause serious and dramatic damage to the pump and
surrounding area.
1.2 mechanical installation
1.2.1 location
In open systems, locate the unit as close as practical to the
liquid being pumped, with a short, direct suction pipe. Ensure
adequate space is left above and around the unit for operation,
maintenance, service and inspection of parts.
In closed systems, where possible, the pumps should be in-
stalled immediately downstream of the expansion tank /make-
up connection. This is the point of zero pressure change and
is necessary for effective pump operation. Do not install more
than one expansion tank connection into any closed hydronic
system.
Electric motor driven pumps should not be located in damp or
dusty location without special protection.
Airflow into the motor and/or motor fan should not be
obstructed.
It is good practice to leave sufficient space around equipment
for operation, maintenance, and service needs.
1.2.2 installation
When installing vertical in-line pumps, an important consid-
eration to accrue full added-value from the pump design is to
ensure that the pump is pipe-mounted and free to
float
with
any movement, expansion and contraction of the piping. Should
any vertical in-line pump use support to the structure it is
imperative that no pipe strain is imposed on the pump flanges.
Tell-tale pieces of equipment such as springs or
waffle
style
neoprene isolation pads that distort with pressure to indicate
added piping weight, should be used under pump supports
should the pump not be truly pipe mounted.
Design Envelope cannot be mounted with shafts in the
horizontal position.
1.2.2.1
4300
&
4380
Vertical In-Line pumps may be installed directly
in the system piping with no additional support. Pipe hangers
are simply sized for the additional weight of the pumping unit.
Many pumps are installed in this manner and can be mounted
at sufficient height to take zero floor space.
fig. 1.2.2.1
2'
or
3'
height above
finished floor
Summary of Contents for Design Envelope 4300
Page 2: ......
