TLV PowerTrap GP14-B Manuel D'utilisation page 13

(4) Exhaust Piping:
• The exhaust pipe diameter should be at least 25 mm (1").
• The exhaust pipe should be connected to the top of the receiver/reservoir.
• For Open Systems: If the GP exhaust line has to discharge to atmosphere, a sound level of
approximately 90 – 110dB may be emitted from the exhaust pipe discharge outlet for two
to three seconds. If soundproofing measures are necessary,
install a silencer. (If the exhaust line is connected to the condensate receiver, the sound
level will be below 60dB.)
• Make sure that the distance from the ground to the highest point on the exhaust pipe
(where it enters the receiver/reservoir) does not exceed 3 m (10 ft).
If it exceeds 3 m (10 ft) and steam is used as the motive medium, condensate must be
drained from the exhaust pipe in order not to obstruct the exhaust. Implement one of the
following countermeasures: (See the figures below.)
(a) For Open Systems only: Add a float-type steam trap to the exhaust pipe at a point just
above where the exhaust pipe exits the unit body. (Figure 1)
(b) For Open and Closed Systems: Add piping connecting the exhaust pipe to the
pumped medium inlet pipe between the reservoir and the strainer, being sure to install
a check valve on the piping to prevent backflow of condensate from the pumped
medium inlet pipe to the exhaust pipe. (Figure 2)
• For Closed Systems only: The exhaust pipe must be connected to the top of the reservoir.
When the exhaust piping height exceeds 3 m (10 ft.)
Steam
When the
Trap
exhaust
piping is
3 m (10 ft.)
or more
Close to
Power
Trap
Pit
Figure 1: Open Systems
(5) Inlet and Outlet Piping
• Install a 40-mesh or finer strainer on the PowerTrap pumped medium inlet pipe.
The installation should be in a location that allows sufficient space for maintenance
of the strainer.
• Ensure that the inlet and outlet check valves are installed in the correct direction.
The check valve on the inlet pipe in particular should be installed right next to the PowerTrap.
• Only TLV check valves (CK3MG, CKF3MG) should be used; proper discharge capacity cannot
be guaranteed with other check valves.
(6) Valves on the Various Pipes
• In order to ensure the proper discharge capacity, use full bore ball valves or gate valves on
the pumped medium inlet and outlet lines as well as on the motive medium supply
and exhaust lines.
If it is necessary to reduce the velocity of the motive medium supply, a needle valve can be
used. However, be aware that the discharge capacity will be reduced. (Refer to
"Operation" (1) e) on pages 19 and 20).
• Install union or flanged joints between the valves and the PowerTrap to allow for easy
maintenance.
• Be sure to provide the necessary maintenance space for PowerTrap disassembly and repair
(see "Installation and Maintenance Space" on page 18).
Vent Line
Equipment
Overflow
Pipe
Exhaust
Piping
Receiver
Inlet
Pipe
Power
Outlet
Trap
Pipe
Pit
Exhaust
Piping
When the
exhaust
Check
piping is
Valve
3 m (10 ft.)
or more
Close to
Power
Trap
Pit
Pit
Figure 2: Open & Closed Systems
* For Open Systems only
** For Closed Systems only
— 11 —
Vent Line*
Equipment
Overflow
Pipe*
Receiver/
Reservoir
Inlet
Pipe
Power
Outlet
Trap
Pipe
Pit
Steam trap**