Revision: 09/2014
W 3552-6.02e.E
Page 10 / 16 MWi
Instruction manual
BDP2
7.
SHIPPING AND STORAGE
All openings (connections, etc.) are covered with yellow protection caps to prevent the intake of moisture or dirt.
Storage shall be dry and protected from any dirt or debris.
During transportation, the BDP2 should be protected in an adequate way to prevent damage.
8.
INSTALLATION
Before installation the BDP2 should be visually inspected for any shipping damage.
Allow sufficient space for inspection and servicing. Provide at least 20 cm underneath the BDP2 for easy removal.
Furthermore, a diameter of at least 20,6 cm space should be considered in order to be able to rotate the BDP2 in the
G1” connection for removal.
For installation of the BDP2 it is required that a G1“ threaded connection with the opening facing down is available.
With regard to servicing larger refrigeration systems it is recommended to use a stop valve (WITT EA32/G1”-I or II)
in conjunction with the G1” threaded connection mentioned above.
If required the positions of the hot gas and oil return line connections of the BDP2 can be modified. Therefore, the 12
cylinder screws need to be taken out such that the head can be turned according to the hole pattern. Upon position-
ing of the connections, the head and body of the BDP2 need to be re-assembled. Make sure the cylinder screws are
tightened again
with a torque of 56 Nm
.
Before installation, the G1“ threaded ring of the BDP2 should be turned all the way down. The threaded ring together
with the O-ring acts as a stuffing box screw connection. When the BDP2 is entirely screwed into the existing G1”
connection, the BDP2 should be positioned and sealed with the threaded ring/O-ring. Therefore the threaded ring
has a cross hole for utilizing of a 6 mm Allen wrench.
To continue with the piping the hot gas and oil return line connections of the BDP2 are equipped with welding sockets
(see dimensions on the right side)
When long oil return lines are required, or when low differential pressures are present, a
lager diameter is necessary depending on the pressure loss. Based experience it is not
recommended to use an inner diameter of at least 9mm (e.g.
seamless pipe ø13,5 x 2.3).
It is possible to use larger diameters when reducers are installed. The selection should be
made by the project engineer at the planning state taking pressure loss, differential pres-
sures, viscosity and temperatures into account.
Make sure the installation is stress-free when welding to the connections.
8.1.
BDP2 CONNECTION
The weight of the BDP2 and vibrations in refrigerant system may cause damages to the weld connection of the
BDP2. For example, this may occur if the lever arm is too long.
Therefore, the BDP2 should be supported by additional appropriate structures (e.g., bracing, cold clamp with
connection to the frame or similar measures).
