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plumbing SyStem
WAter heAter
Operating Instructions
Your motor home may be equipped with either a tank (storage) water heater or tankless water
heater. The following is an overview of both systems. For detailed operating instructions,
refer to the manufacturer’s owner’s manual supplied in your Warranty packet.
Tank (Storage) Water Heater System(If So Equipped)
Gas/Electric DSI Tank (Storage) Water Heater (If So Equipped)
Your motor home may be equipped with a gas/electric DSI (direct spark ignite) water
heater. The following is an overview of the water heater operation. For detailed operating
and safety information, refer to the manufacturer’s user’s guide included in the Owner’s
Warranty packet.
Read the safety and operating information provided in the manufacturer’s user guide before
attempting to activate the water heater. Make sure the water heater is lled with water before
use; even momentary operation of the water heater without water in it may result in damage
to the tank and/or controls. Always open both the hot and cold water faucets when lling the
fresh water tank to allow air pockets to be forced out of the water heater.
Hydrogen gas may result if you have not used the water heater for two weeks
or more. HYDROGEN GAS IS EXTREMELY FLAMMABLE. 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 ow. 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 ve to ten minutes. Do
not smoke or have any open ame 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 water
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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