© 2009 Viking Preferred Service
19
Installing Hot Gas Valve
1. Bend hot gas valve tubing similar to the one
being replaced. DO NOT KINK TUBING OR
OVERSTRESS TUBING AT VALVE JOINTS.
2. Braze in the new drier assembly and then the
capillary tube.
3. APPLY A HEAT SINK OR A DAMP CLOTH ON
THE VALVE BODY TO KEEP HEAT AWAY. Be
sure to keep heat sink or water from entering
the tubing. Failure to keep the valve body cool
will result in a leaky valve.
4. Braze the hot gas valve tube (from the side of
the valve) into the tee on the drier assembly.
5. Braze the hot gas valve tube (from the bottom
of the valve) into the evaporator bypass tube.
6. Cool the brazed joints with a damp cloth.
7. Remove the heat sink or damp cloth from the
valve body.
8. Check for leaks using dry nitrogen gas and a
leak detection system.
9. Flush the system and re-charge.
Reassemble reversing steps 1 through 9 “Removing
th Hot Gas Valve” section.
Black w/white stripe
#3 Contact (”On”)
Figure 7
Black w/red stripe
(#1 Contact “Clean”)
Black (hot) wire #2 Contact (”Off”)
Remove this screw for the electrical bracket
to slide out the mechanical assembly.
Figure 8
Remove the six screws on the
bottom of the unit to slide out the mechanical.
Figure 9
Figure 10
Mechanical
Service Diagnostics and Procedures
(Sealed System Components)
