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5. Now remove the cover on the top valve using a 19 mm
open ended wrench (i.e. crescent or adjustable). Open the
valve by turning it counter-clockwise as far as it will go
using a 5 mm Allen key. The valve is now open. If the valve
is not opened fully, the system may malfunction and suffer
damage. Screw the cover back on to the top valve and
tighten it well to ensure that it is properly sealed.
CAUTION
Page 29
mrcool.com
Refrigerant Piping Connection
6. Now remove the cover on the bottom valve using a 19
mm crescent (or adjustable) wrench. Open the valve by
turning it counter-clockwise as far as it will go using a 5
mm Allen key. The valve is now open. If the valve is not
opened fully, the system may malfunction and suffer
damage. Screw the cover back on to the bottom valve
and tighten it well to ensure that it is properly sealed.
7. After completing steps 1- 6, check that all the connections are sealed correctly using leak detection spray or soap suds.
If any bubbles form, the system has a leak and the screw connectors must be retightened using a crescent or adjustable
wrench.
8. Start the equipment so that the operating pressures build
up inside the system. Check all the connectors again for
signs of leaks
a) during cooling mode
b) in heating mode.
9. Wrap any excess piping with the provided tape to
prevent damage from UV Rays. See
Fig. 6.2 below
and
Fig. 6.3 on the next page for a full instructional diagram.
Fig. 6.2
NOTE
If any bubbles form, the system has a
leak and the screw connectors must be
retightened.
All of these steps must be completed BEFORE powering on the unit. Failing to do so
could damage the unit.
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