Carel humiFog UA1K0HM00, User Manual

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5.2 Hydraulic connections
The hydraulic connections are as follows:

Water inlet

Water drainage

High pressure water outlet to rack/distribution
WARNING:
The low pressure inlet and high pressure outlet connections must be connected to the hard plumbing (by customer) with a
three foot (3’ or 1 meter) or longer flexible high pressure hose.
5.4.1 Water inlet line
Installation of a manual ball valve (supplied by others) just before the water inlet connection to the unit is recommended, and would
make installation and maintenance easier. The required minimum supply piping sizes are shown in Tab 5.b. Refer to Fig. 2.a for
location of inlet connection.
5.4.2 Water drain line
The
humiFog
also requires connection to a drain. This drain connection is utilized for the pressure relief valve, as well as the unit
thermal valve. Refer to Fig. 2.a for location of drain connections
5.4.3 High pressure water outlet line
The high pressure water line shall be connected to the components for the distribution system. For both ambient and duct
installations, the connection must be made with a flexible high pressure hose [minimum 3’ (1 meter); supplied as an option by
CAREL]. Refer to Fig. 2.a for location of high pressure outlet connection.
Parameter Unit of measure UA1K0* UA1K8* UA2K5* UA3K5* UA5K0*
Nominal Outlet Flow lt/hr / gpm 1000 / 4.4 1800 / 7.9 2500 / 11.0 3500 / 15.4 5000 / 22.0
Outlet Pressure Mpa / Bar / PSI 7 / 70 / 1015
Outlet Connection 1 NPT 1 ” NPT FEMALE
Drain Connection-
Thermal valve
INCHES ¼ ” BARBED FITTING
Drain Connection-
Relief valve
NPT ½” NPT FEMALE
(
1
) Standard hydraulic connections are NPT; G” connections (BSPP) are available on request
5.4.4 Duplex outlet lines
Note: Duplex systems are expanded capacity systems, not redundant systems.
Contact your Carel salesperson for redundancy options, if required.
To prevent back flow from one pumping station into the other, check valves must be
installed on each station between the flexible high pressure hose and the tee fitting.
The check valve should be sized to match the flow capacity of the pumping station,
thereby ensuring that the pressure provided to the distribution system is maintained.
(Check valves are supplied as an option by CAREL.) To facilitate maintenance of the
check valves, manual ball valves are recommended as shown. (Fig. 5.a)
Fig. 5.a
Tab 5.c