CAFP
22
3-4. Installing the Drain Piping
(1) Prepare a standard hard PVC pipe (O.D. 32 mm)
for the drain and use the supplied drain hose and
hose band to prevent water leaks.
The PVC pipe must be purchased separately. The
unit’s transparent drain port allows you to check
drainage. (Fig. 3-6)
●
Insert the drain pipe until it contacts the socket
as shown in Fig. 3-6, then secure it tightly with
the hose band.
●
Do not use adhesive when connecting the sup-
plied hose.
Reasons: 1. It may cause water to leak from the
connection. Since the connection is
slippery just after the adhesive has
been applied, the pipe easily slips off.
2. The pipe cannot be removed when
maintenance is needed.
●
Do not bend the supplied drain hose 90° or
more. The hose may slip off.
●
Align the hose bands with the end of the hose.
Tighten the hose band firmly. Make sure that
the bead is not covered by the hose band. (Fig.
3-6)
(2) After checking the drainage, wrap the supplied
packing and drain pipe insulator around the pipe.
(Fig. 3-7)
Make sure the drain pipe has a downward gradient
(1/100 or more) and that there are no water traps.
NOTE
CAUTION
CAUTION
Tighten the hose clamps so
their locking nuts face
upward. (Fig. 3-6)
CAUTION
●
Do not install an air bleeder
as this may cause water to
spray from the drain pipe
outlet. (Fig. 3-8)
Fig. 3-6
Fig. 3-7
Fig. 3-8
Bead
Hose band
Supplied
drain hose
Connection pipe
(drain port)
Align the hose
band with the end
of the pipe
(Field supply)
(Field supply)
Packing
(supplied)
VP-25
VP-25
Hard PVC
socket
Hard PVC pipe
PVC adhesive
Vinyl clamps
Drain insulator (supplied)
Air bleeder prohibited
04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 22
