Operating instructions
24
For size and position of the heat exchanger water inlet and
outlet connections refer to the certified dimensional
drawings supplied with the unit. See. Fig. 17 - “Standard
waterboxes and nozzle arrangements”
The water pipes must not transmit any radial or axial force
nor any vibration to the heat exchangers.
The water supply must be analysed and appropriate filtering,
treatment, control devices, isolation and bleed valves and
circuits built in, to prevent corrosion, fouling and deteriora-
tion of the pump fittings. Consult either a water treatment
specialist or appropriate literature on the subject.
3.5.1 - Install water piping to heat exchanger
Install piping using job data, piping drawings, and procedures
outlined below. A typical piping installation is shown in
Fig. 16 - “Typical nozzle piping”.
CAUTION: Factory-supplied insulation is not flammable
but can be damaged by welding sparks and open flame.
Protect insulation with a wet canvas cover.
Remove chilled and condenser water sensors and probes
before welding connecting piping to the connections. Refer
to Fig. 10 - “19XR Rear view”. Replace sensors and probes
after welding is complete.
1. Offset pipe flanges to permit removal of waterbox
cover for maintenance and to provide clearance for
pipe cleaning. No flanges are necessary with marine
waterbox option; however, water piping should not
cross in front of the waterbox or access will be blocked.
2. Provide openings in water piping for required pressure
gauges and thermometers. For thorough mixing and
temperature stabilization, wells in the leaving water
pipe should extend inside pipe at least 50 mm.
3. Install air vents at all high points in piping to remove
air and prevent water hammer.
4. Install pipe hangers where needed. Make sure no weight
or stress is placed on waterbox pipes or flanges.
5. Use flexible connections to reduce the transmission of
vibrations.
6. Water flow direction must be as specified in Fig. 16.
NOTE: The water outlet is always the upper nozzle for
cooler or condenser.
7. Water flow switches must be of vapour-tight construc-
tion and must be installed on top of pipe in a horizontal
run and at least 5 pipe diameters from any bend.
8. Install waterbox vent and drain piping in accordance
with individual job data. All connections are 3/4 -in. FPT.
9. Install waterbox drain plugs in the unused waterbox
drains and vent openings.
10. Install optional pumpout system or pumpout system
and storage tank. Please refer to Figs. 18 and 19.
1. Air vent
2. Leaving condenser water
3. Entering condenser water
4. Isolation valve
5. Pressure gauges
6. Thermometer openings (optional)
7. Pipe hangers
8. Entering chilled water
9. Leaving chilled water
10. Water drain
Non-certied drawings. Refer to the certied dimensional drawings supplied with the unit or available on request, when designing an installation.