IM-P681-02
ST Issue 2
10
3. Single MFP14 - PPU
3.1 Installation
Safety notes:
Before actioning any installation observe the 'Safety information' in Section 1.
Important note: Please acknowledge the safe lifting points indicated on Figure 5.
3.2 Location
The MFP14-PPU should be located in a suitable position e.g. against a wall where the vent can
be easily piped to atmosphere. It is recommended that reasonable clearance is maintained
around the unit for ease of access.
1. Note:
The receiver vent (
Y
) must be piped unreduced and unrestricted to a safe atmospheric
discharge point. The line should be vertical, if possible. If horizontal runs must be used, the
line should be pitched so that it is self draining to the receiver. A suitably sized vent head should
be fitted to the top of the vent pipe to ensure safe discharge of flash steam. Refer to Table 1 below for
the recommended receiver vent pipe sizing.
Table 1. Recommended receiver vent pipe sizing
PPU size
Reciever vent diameter
DN25
1"
80 mm 3"
DN40
1½"
100 mm 4"
DN50
2"
150 mm 6"
DN80 x DN50
3" x 2"
150 mm 6"
The recommended receiver vent size is based on:
- A maximum flash velocity in the receiver of 20 m / s.
- A maximum vent velocity of of 30 m / s.
- A maximum unrestricted vent pipe length of 10 m.
- A maximum condensate inlet pressure (discharge from steam traps) of 10 bar g.
2.
Connect the condensate outlet (
V
) of the MFP14-PPU to the condensate return line.
3.
Connect the condensate inlets (
Z
) to the process / equipment being drained.
4.
Connect a 'U' bend water seal to the overflow point (
X
) and ensure that it is connected to a
safe discharge point. Ensure a suitable amount of water is filled into the 'U' bend before
commissioning the PPU. The 'U' bend water seal, during normal operation, is self-filling
and prevents 'flash steam' discharging from the overflow. It is recommended the 'U' bend
is at least 305 mm (12") deep.
Always connect the overflow
to a safe discharge point,
remembering that any
condensate that discharges
may be hot. Care should
be taken to ensure that
hot condensate being
discharged to drain does not
infringe local temperature or
environmental regulations.
5.
C o nne c t t he o p er at ing
medium (steam) to the motive
supply inlet (
W
).
6.
The MFP14-PPU is now
ready to be commissioned
(see Section 3.3).
Fig. 4
Connection to atmospheric vent line
'U' bend water seal
overflow point
Connect to a safe
discharge point
Recommended
305 mm (12")
minimum
Y
X
Summary of Contents for MFP14-PPU
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