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plumbing SyStem
knob turns 45° to open or close).
4. Open the “low point drains” by turning, then pulling the
handles up. As their name indicates, they will be at the
lowest point of water lines. A label is placed on the outside
of the RV to indicate where the drains are located. The drains
will typically need to be opened from inside the motor home.
Once the label is found on the exterior sidewall, go inside the
motor home to nd the corresponding location of the drains.
5. Drain the sink by removing the drain cap.
6. Turn ON the water pump and allow it to run as needed.
7. If the RV water heater has bypass valves: Set them to the BYPASS conguration. (refer
to the Water Heater Bypass section). Disregard if there are no bypass valves.
8. Operate the toilet ush lever until water stops owing.
9. Relieve the water pressure using the P&T valve BEFORE removing the water heater
drain plug. If there is any water pressure present the water will spray out of the opening
when the drain plug is removed.
When you are nished draining the fresh water system, reverse these steps and 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 drainage procedure.
Low Point Drain
sAnitizinG the pluMbinG systeM
When to sanitize
When your motor home is new.
At the beginning and end of each season.
When the water system becomes contaminated or every three months of use.
How to sanitize
1. Turn water heater power OFF (storage style-both electric and LP gas switches; tankless
water heater turn power switch OFF).
2. Bypass the (storage) tank water heater; hot and cold supply valves OFF, middle (mixer)
valve ON. Sanitizer should be kept out of the water heater. The tankless water
heater does not have bypass valves.
3. Level the RV and drain the fresh water system (see Draining the Fresh Water System).
4. Close the low point drain valves and the fresh water tank drain valve.
5. Remove the water lter from the full system canister in the basement area of the motor
home (see Water Purication section). Re-attach the empty canister and turn the water
supply valves at the lter ON.
6. Prepare a chlorine solution using 1/4 cup of household bleach (sodium hypochlorite
solution) to one gallon (3.785 liters) of water in a container. Prepare one gallon of
solution for every 15 gallons of tank capacity. This will result in a residual chlorine
concentration of 50 ppm in the water system.
If a 100 ppm concentration is required as discussed in step 13, use ½ cup of household
bleach with one gallon of water to prepare the chlorine solution. One gallon of the
solution should be used for each 15 gallons of tank capacity.
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