21
7.2 - Water connections
The water connections are Victaulic type connections. The inlet and outlet connection diameters are identical.
Inlet/outlet diameters
19PV
550
720
800
900
1010
1180
1300
1450
1600
Evaporator
Units without evaporator with one pass less (option 100C)
Nominal diameter
in
6
6
8
8
8
8
8
8
8
Actual outside diameter
mm
168,3
168,3
219,1
219,1
219,1
219,1
219,1
219,1
219,1
Units with evaporator with one pass less (option 100C)
Nominal diameter
in
6
6
8
8
8
8
8
8
8
Actual outside diameter
mm
168,3
168,3
219,1
219,1
219,1
219,1
219,1
219,1
219,1
Condenser
Units without condenser with one pass less (option 102C)
Nominal diameter
in
6
8
8
8
8
8
8
8
8
Actual outside diameter
mm
168,3
219,1
219,1
219,1
219,1
219,1
219,1
219,1
219,1
Units with condenser with one pass less (option 102C)
Nominal diameter
in
6
8
8
8
8
8
8
8
8
Actual outside diameter
mm
168,3
219,1
219,1
219,1
219,1
219,1
219,1
219,1
219,1
7.3 - Flow control
Evaporator flow switch and chilled water pump interlock
IMPORTANT: On 19PV units, the unit water flow switch must
be energised. Failure to follow this instruction will void the
manufacturer guarantee.
The water flow switch is installed on the evaporator water inlet
and adjusted by the control, based on unit size and application. If
adjustment is necessary, it must be carried out by qualified
personnel trained by manufacturer Service.
7.4 - Evaporator and condenser water box bolt
tightening
The evaporator (and condenser) are of the shell and tube type
with removable water boxes to facilitate cleaning. Re-tightening
or tightening must be done in accordance with the illustration in
the example below.
Water box tightening sequence
Legend
1 Sequence 1: 1 2 3 4
Sequence 2: 5 6 7 8
Sequence 3: 9 10 11 12
Sequence 4: 13 14 15 16
2 Tightening torque
Bolt size M16 - 171 - 210 Nm
NOTE: Before this operation we recommend draining the
circuit and disconnecting the pipes to be sure that the bolts
are correctly and uniformly tightened.
7 - WATER CONNECTIONS
Содержание 19PV550
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