Carrier 30XW - Water Connections; Flow Control; Evaporator and Condenser Water Box Bolt Tightening

22

Evaporator ow switch and chilled water pump interlock
IMPORTANT: On 30XW units, the unit water ow switch
must be energised. Failure to follow this instruction will
void the Carrier guarantee.
The water ow 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 qualied personnel trained by Carrier Service.

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


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.

NOTE: Before this operation we recommend draining the
circuit and disconnecting the pipes to be sure that the bolts
are correctly and uniformly tightened.

The water connections are Victaulic type connections. The inlet and outlet connection diameters are identical.
Inlet/outlet diameters

 254 304 354 402 452 552 602 652 702 802 852 1002 1052 1154 1252 1352 1452 1552 1652 1702


Nominal diameter in 5 5 5 5 5 5 5 6 6 6 6 6 6 8 8 8 8 8 8 8
Actual outside diameter mm 141.3 141.3 141.3 141.3 141.3 141.3 141.3 168.3 168.3 168.3 168.3 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1

Nominal diameter in 5 5 5 6 6 6 6 6 6 6 6 6 6 8 8 8 8 8 8 8
Actual outside diameter mm 141.3 141.3 141.3 168.3 168.3 168.3 168.3 168.3 168.3 168.3 168.3 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1


Nominal diameter in 5 5 5 5 5 5 5 6 6 6 8 8 8 8 8 8 8 8 8 8
Actual outside diameter mm 141.3 141.3 141.3 141.3 141.3 141.3 141.3 168.3 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1

Nominal diameter in 6 6 6 6 6 6 6 8 8 8 8 8 8 8 8 8 8 8 8 8
Actual outside diameter mm 168.3 168.3 168.3 168.3 168.3 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1

 512 562 712 812 862 1012 1162 1314 1464 1612 1762


Nominal diameter in 6 6 8 8 8 8 8 8 8 10 10
Actual outside diameter mm 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1 273.1 273.1

Nominal diameter in 6 6 8 8 8 8 8 8 8 10 10
Actual outside diameter mm 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1 273.1 273.1


Nominal diameter in 6 6 8 8 8 8 8 8 8 10 10
Actual outside diameter mm 168.3 168.3 219.1 219.1 219.1 219.1 219.1 219.1 219.1 273.1 273.1

Nominal diameter in 8 8 8 8 8 8 8 8 8 10 10
Actual outside diameter mm 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 219.1 273.1 273.1