Three-Way Valve
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 30
• Reconnect the red wire to J6-11, and the green/
black wire to J6-10 of the Aqua-Hot Controller J6
pin.
9.
Refill the Aqua-Hot’s boiler tank, purging the heating loop
if necessary.
10.
Monitor the newly installed parts and fittings for leaks.
11. Test for normal operation.
Replacement Procedure:
1. Ensure that the Aqua-Hot has been completely shut down,
all power sources have been disconnected, and the unit
has completely cooled.
2. Use clamp hose pliers to pinch tubing surrounding the
three-way valve as indicated in Figure 48.
3. Remove the valve wires from the green connector plugged
into the controller.
4. Using constant tension pliers, loosen and slide back the
constant tension clamps securing the hose to the defective
valve.
5. Remove the hose from the defective valve as shown in
Figure 49.
6. Remove the two remaining hoses from the defective three-
way valve.
7. Slide the hoses onto the valve and set the constant tension
clamps back into place.
8. Install the replacement three-way valve according to the
specific instructions below.
Figure 48
Figure 49
Failure to disconnect all power supplies and/or allow
the unit to cool before servicing could cause serious
damage or personal injury.
Clamp
