Lacey Act Declaration Form

Page 33 mrcool.com
Refrigerant Piping Connection
Step 5: Opening the refrigerant valves of the outdoor unit
3. If you’re installing a 3, 4, or 5-zone condenser, after opening all of the line set connection valves, you must
also open the two main valves (King Valves), as shown in the images below. To do this, first unscrew the
caps from the valves in a counter-clockwise direction using an appropriate-sized wrench, or crescent
(adjustable-type) wrench. Then, insert a 5 mm Allen key and open each of the valves by turning them
counter-clockwise as far as they will go. DO NOT force it. Then, reinstall the caps and tighten them
securely to ensure that they are properly sealed.
King
Valves
If the King Valves are not fully opened, the system could malfunction and suffer damage.
CAUTION
1. Using the images below as a guide, remove the
cover on the top valve, using a 19 mm
open-ended wrench or a crescent (adjustable-
type) wrench. Then, insert a 5 mm Allen key and
open the valve by turning it counter-clockwise as
far as it will go. DO NOT force it. The valve is
now open. Screw the cover back onto the top
valve and tighten it well to
ensure that it is properly sealed.
2. Using the images below as a guide, repeat the
same process for the bottom valve. Remove the
cover on the bottom valve, using a 19 mm
open-ended wrench or a crescent (adjustable-
type) wrench. Then, insert a 5 mm Allen key and
open the valve by turning it counter-clockwise as
far as it will go. DO NOT force it. Screw the cover
back onto the bottom valve and tighten it well to
ensure that it is properly sealed.
CAUTION
All of these steps must be completed BEFORE powering the unit, or else it could damage it.