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98
Plumbing Systems
Draining the Fresh Water System
The low-point drain valves release water in the supply lines by
opening the valves and all faucets. The water heater has its own
drain plug. To drain the permanent fresh water holding tank and
supply lines:
1. OPEN all faucets.
2. OPEN the
Fresh Water Holding Tank Gate Valve.
This is the
white T-handle located under the RV, close to the axles.
See Photo on facing page.
3. REMOVE the caps from the red and blue
low point drains
.
4. DRAIN the sink by removing the drain cap.
5. Turn ON the water pump and allow it to run as needed.
6. OPEN all three water heater
bypass
valves
(a, b, & c)
as shown below:
7. ALWAYS use the water heater
P & T Valve
(
Pressure
and Temperature Valve
) to relieve any water pressure,
BEFORE removing the water heater drain plug.
◦
Even a small amount of water pressure may cause
water to spray out when the drain plug is removed.
◦
See Photo, on
8. REMOVE the water heater drain plug.
After draining the Fresh Water System, REVERSE these steps.
Turn the water heater bypass valves back to the
Normal Use
(camping) positions.
Next,
dump the grey and black water holding
tanks at an appropriate facility or according to local public
codes. It is normal for some liquid to remain in the fresh water
tank after draining is complete.
Low-Point Drain Valves
located under the RV
Valve Positions -
Draining the Water Heater
b.
Flow
Open
Hot Out
Cold Out
Cold In
c.
a.
a.
Flow
Open
c.
b.
Draining Positions
Water Heater
3-Valve System
as equipped
Flow
Open
Hot Out
Cold In
Water Heater Draining Positions
a.
b.
c.
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