Service manual

— Page 101 —

600-D01 Series Hydronic Heating System Service Manual - Rev. A

When storing the Motorhome: Not winterizing the Aqua-

Hot when freezing temperatures are present will result in

serious damage to the Aqua-Hot’s Domestic Water Heating

System. Also, be sure to use an FDA approved, “GRAS”

rated antifreeze for winterization.

APPENDIX C: EXTREME COLD WEATHER OPERATION

120 Volt-A.C. Electric Heating Element

Please note that the 120 Volt-AC Electric Heating Element is

the Aqua-Hot’s

secondary heat source

for heating both the

interior and/or the domestic hot water during low heating de-

mand situations (such as when moderate ambient temperatures

exist and/or when there is a low demand for domestic hot wa-

ter).

If the 120 Volt-AC Electric Heating Element is not providing

enough heat, turn the Diesel-Burner on, in conjunction with the

120 Volt-AC Electric Heating Element.

NOTE:

The Aqua-Hot can continue to be used for interior

zone heating once the domestic water heating system

has been drained and winterized.

Diesel-Burner

1. If the Diesel burner Fails to operate:

A. Is the Diesel Fuel in the motor home winter

fuel or summer fuel?

B. Is the Diesel Fuel liquid or Jelled?

C. Are the electrodes properly adjusted?

D. When was the last time an Annual Service

was performed?

Figure C1

NOTE:

The Aqua-Hot 675 Utilizes both a 120 VAC and a

240 VAC heating element.