THOR Jayco Precept 2021, Owner'S Manual

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Section 8: Plumbing System
5. Drain the flex hose by holding it at a sloped angle to drain excess water and return the
hose to the storage location.
6. As an added safety measure, open the Macerator Bypass valve and let it drain. The
bypass valve may be either at the utility center or under the RV.
De-winterize the macerator system: Emptying the black tanks in the spring will flush
antifreeze out of the macerator system.
Water Heater
The water heater manufacturer has preset the sensing limit to maintain the water temperature
when the water heater is activated.
Operating instructions
Read the safety and operating information provided in the manufacturer’s manual located in
your warranty packet before attempting to activate the water heater.
 Hydrogen gas may result if you have not used the water heater for two
weeks or more. HYDROGEN GAS IS EXTREMELY FLAMMA-
BLE. To reduce the risk of injury under these conditions, open the hot
water faucet for several minutes at the kitchen sink before you use any
electrical appliance connected to the hot water system. If hydrogen is
present, you may hear what sounds like air escaping through the pipe as
the water begins to flow. Hydrogen gas may be present even after water
has been drained from the water heater tank. Open the faucet at the sink
and allow the system to vent for five to ten minutes. Do not smoke or
have any open flame near the open faucet while venting. On DSI water
heater models, make sure the switch is OFF.
 Do not alter the operation or change the design/construction of your wa-
ter heater. For your safety, only factory authorized parts should be used
on your water heater. Accessories marketed for recreation vehicles, such
as an “add-on” electric heating elements, are not recommended by the
manufacturer. Such items are not approved to be installed and could
create an unsafe condition and will void all warranties.
 If you smell propane gas then STOP! and follow the procedures listed
in the Propane System Section before attempting to operate the water
heater.
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