Daikin Navigator WWV - Heat Exchanger Water Piping Installation; Heat Exchanger Piping Components Description

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED
8
Heat Exchanger Water Piping
Figure 4: Typical Piping, Shell and Tube Evaporator
No. Component
1 Gate Valve (2)
2 Vibration Eliminators (2)
3 Temp. Sensor Wells (2)
4 Valved Pressure Gauge
5 Balancing Valve
6 Water Strainer
7 Relief Pipe Plug
Be sure that water inlet and outlet connections match certied
drawings and nozzle markings.
Field installed water piping to the chiller must include:
• air vents at the high points.
• a cleanable water strainer upstream of the evaporator and
condenser inlet connections.
• a ow proving device for both the evaporator and condenser
to prevent freeze up. Flow switches, thermal dispersion
switches, or Delta-P switches can be used. Note that
thermal dispersion ow switches are factory installed as
standard. Additional ow switches can be used only if they
are connected in series with the ones already provided.
• su󰀩cient shuto󰀨 valves to allow vessel isolation. The chiller
must be capable of draining the water from the evaporator
or condenser without draining the complete system.
• matching mechanical connections. All evaporators and
condensers have OGS-type grooved water connections
(adhering to Standard AWWA C606) or optional ange
connections. PVC piping should not be used.
• water pressure gauge connection taps and gauges at the
inlet and outlet connections of both vessels for measuring
water pressure drop.
WARNING
Polyolester Oil, commonly known as POE oil is a synthetic oil
used in many refrigeration systems, and is present in this Daikin
Applied product. POE oil, if ever in contact with PVC/CPVC, will
coat the inside wall of PVC/CPVC pipe causing environmental
stress fractures. Although there is no PVC/CPVC piping in this
product, please keep this in mind when selecting piping materials
for your application, as system failure and property damage
could result. Refer to the pipe manufacturer’s recommendations
to determine suitable applications of the pipe.
It is recommended that eld installed water piping to the chiller
include:
• temperature sensors at the inlet and outlet connections of
both vessels.