M A J O R A P P L I A N C E S & A C C E S S O R I E S
4-18
to drain the entire system.
When re-activating the water heater after the motor home is taken out of storage, make sure that the entire
water system, including the water heater, has been filled with water and the lines have been purged of any
entrapped air before relighting the water heater. Failure to do so may allow the water-heating element to be
turned “on” before such is immersed in water; thereby, causing the premature failure of the heating element
and voiding the warranty.
Tankless Gas Water Heater
Your coach may be equipped with an optional tankless gas water heater (Figure 4-17). The tankless gas water
heater provides instantaneous hot water as needed. To operate the tankless
gas water heater you will need to follow the directions listed below:
•
Pressurize the water system by turning on the pump or city water
pressure
•
Purge all air from system by turning on the taps until a steady
stream of water flows from the taps. Turn off the taps.
•
Turn on the 12 VDC power supply. This is labeled “Water Heater”
and is located in the cabinet above the driver seat.
•
Turn on the propane supply at tank and the manual gas valve if installed in system. Please note the
heater will remain dormant until a water tap is opened and the heater senses a water flow of at least 0.4
GPM.
•
Turn on hot water tap. The heater will fire up within two seconds and hot water will flow from the tap
in the time that it takes to get through the plumbing from the heater to the tap. Hot water delivery will
continue as long as the water is flowing. (NOTE: You may have to turn the water on and off several
times to bleed the air from the LPG line before the water heater fires up.) If the heater fails to light
after several ignition attempts, turn the power to the unit off, wait five seconds and turn the power on
again.
•
Close the hot water tap and heater will shut off.
NOTE:
When using an “on/off” button on a shower head or an outside wash down box, always turn off the
hot and cold water valves when finished. Not doing so will result in cold water bleeding into the hot water
system and causing the water heater not to ignite. Cold water or alternating warm and cold water will result.
The tankless gas water heater is designed to give a continuous flow of hot water as long as required and
maintain the approximate set temperature through all flow rates within the capacity of the heater (85º
temperature rise per GPM). The heater will not fire at very low flows; i.e., under 0.4 GPM.
It is recommended that even when dry camping, take a real shower and leave the water running as you would at
home. You won’t run out of hot water and you won’t have to waste water waiting for the cold water to purge
Figure 4-17. Tankless Gas Water
Heater
Summary of Contents for Allegro Bus 2011
Page 8: ...G E N E R A L I N F O R M A T I O N 1 1 GENERAL INFORMATION Chapter 1 ...
Page 15: ......
Page 16: ...D R I V I N G S A F E T Y I N S T R U C T I O N S 2 1 Driving Safety Instructions Chapter 2 ...
Page 27: ......
Page 28: ...H E A T I N G A I R C O N D I T I O N I N G 3 1 Heating Air Conditioning Chapter 3 ...
Page 37: ......
Page 68: ......
Page 69: ...C A B I N E T S F U R N I T U R E 5 1 Cabinets Furniture Chapter 5 ...
Page 74: ......
Page 75: ...S T R U C T U R A L F E A T U R E S 6 1 Structural Features Chapter 6 ...
Page 77: ......
Page 78: ...E L E C T R I C A L F E A T U R E S 7 1 Electrical Features Chapter 7 ...
Page 94: ......
Page 95: ...S L I D E O U T F E A T U R E S 8 1 Slide Out Features Chapter 8 ...
Page 99: ......
Page 100: ...E X T E R I O R F E A T U R E S 9 1 Exterior Features Chapter 9 ...
Page 107: ......
Page 108: ...I N T E R I O R F E A T U R E S 10 1 Interior Features Chapter 10 ...
Page 112: ......
Page 113: ...P L U M B I N G B A T H F E A T U R E S 11 1 Plumbing Bath Fixtures Chapter 11 ...
Page 126: ......
Page 127: ...C O N S T R U C T I O N F E A T U R E S 12 1 Construction Features Chapter 12 ...
Page 129: ......
Page 130: ...W I N D O W S A W N I N G S V E N T S D O O R S 13 1 Windows Awnings Vents Doors Chapter 13 ...
Page 136: ......
Page 137: ...R O U T I N E M A I N T E N A N C E 14 1 Routine Maintenance Chapter 14 ...
Page 179: ......
Page 180: ...M A I N T E N A N C E D A T A C H A R T S 15 1 Maintenance Data Charts Chapter 15 ...
Page 189: ...M A I N T E N A N C E D A T A C H A R T S 15 10 ...