Holding Tank Heater - Winnebago 2015 Viva! Owner's Manual

1st - Pull Black Waste Tank Drain valve to drain
Black Water (sewage) tank – then close.
2nd - Pull Gray Waste Tank
Drain valve to drain Gray Water
(sink/shower) tank – then close.
Holding Tank Dump Valves
(Located in water service center)
-Typical View
NOTE: DO NOT OPEN BOTH VALVES AT
ONCE. Do not open the Gray Waste Tank
Drain valve until the black tank is
drained and dump valve closed to avoid
sewage back-up into gray tank. Gray
water also rinses any black water solids
from the drain hose.
Black and Gray tank valve positions may
be reversed depending on floorplan and
tank location.
5. Open the Gray Waste Tank Drain valve with a
quick pull and make sure there are no sags in
the hose to ensure complete drainage. Close
Gray Waste Tank Drain valve as soon as tank
is empty.
6. Add an odor control chemical to the sewage
holding tank through the toilet. These
chemicals are available at most RV stores.
7. Rinse sewage drain hose thoroughly with
water and stow.
NOTE: We recommend that you dump all
holding tanks before traveling to avoid
carrying unnecessary weight.
Using On-Site Sewer Hook-Ups
The sewage drain hose may remain attached to
the sewage drain outlet while the motorhome is
parked and connected to an on-site sewage hook-
up.
WARNING
Service inlet access must be closed when
utility connections are not in use.
When using a sewer hook-up, keep the dump
valves closed until a tank becomes full or when
preparing to leave the site. This keeps the solids
in suspension, allowing them to be carried out
with the liquids when the dump valve is opened.
If the valve is left open, the liquids will drain off,
leaving solids in the tank. Should this
accidentally happen, disconnect the hose, fill the
tank about half full with water, and drive a few
miles to dislodge the solids. A few starts and
stops will aid in the process. Then reconnect the
hose and drain in the normal manner.
NOTE: Always keep sewage drain outlet capped
while sewage connection is not in use.
Holding Tank Level Indicators
See "Systems Monitor Panel" in Section 4–
Appliances for further information on the
monitor panel and checking tank levels.
See "Specifications" in Section 1–
Introduction for tank capacities for your model.

HOLDING TANK HEATER

–If Equipped
Your coach may be equipped with black water
and gray water holding tank heaters to allow use
of waste utilities in freezing temperatures. The
holding tank heater power switch is located near
the monitor panel. The illuminated switch will
glow when the power is on.
SECTION 7 –
PLUMBING
7-7