REMKO WKF -compact Series, Assembly And Operating Instructions Manual, Page: 71 / 112

9 Connection of
refrigerant lines
9.1 Connection of refrigerant lines
n The outdoor- and the indoor units are con-
nected with two (WKF Duo with four) copper
pipes of refrigerator quality having the dimen-
sions 3/8" = 9,52 mm and 5/8" = 15,88 mm
(REMKO special accessory).
n Observe the permitted bending radius for the
refrigerant pipes during installation in order to
prevent kinks. Never bend a pipe twice in the
same place in order to prevent embrittlement
or crack formation.
n Assure suitable fastening and insulation when
laying the refrigerant pipes.
n The copper pipes are to be flared to make the
connections to the units. In doing so, check
that the flare has the correct shape and suit-
able union nuts. ( Fig. 77 to Fig. 79).
2
1
Fig. 77: Deburring the refrigerant line
1: Refrigerant line
2: Deburrer
1
Fig. 78: Flanging the refrigerant line
1: Flanging tool
Fig. 79: Correct flange shape
Copper piping Out-
side diameterer
Flare dimensions ø A
3/8" = 9,52 mm 12,4 - 12,8 mm
5/8" = 15,88 mm 21,9 - 22,3 mm
Connection to the unit
n
Remove the cover panel from the outdoor unit
if necessary. It may be necessary to remove
the pre-cut bushings.
n Take off the factory-fitted protective caps. You
can use the union nuts for additional mounting.
Make sure to slide the union nuts onto the pipe
before it is flared.
n Make connections to the device by hand ini-
tially, in order to ensure a good fit. Later,
tighten the joints with two open-end wrenches
Use one wrench to resist the rotation of the
other (Fig. 80).
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