Airxcel Aqua-Hot 600 Series, Руководство по установке, Страница: 41 / 63

Filling the Aqua-Hot
©Aqua-Hot® 600D Installation Manual p. 40
6. Locate the Reporter, and navigate to the “INPUTS FROM
AQUA-HOT” page.
7. Pay attention to the “LOW LEVEL SENSOR” item on this
page. See Figure 80:
8. Fill the tank to approximately ¾ full, or until the “LOW
LEVEL SENSOR” item displays “TANK FULL”.
9. Once the tank is partially full, deactivate the external fl uid
fi ll pump and close the drain valve. DO NOT disconnect the
fl uid pump.
10. Proceed to the next page to purge the zone before
attempting to start the unit.
Filling the Aqua-Hot
Before the fi rst activation of the Aqua-Hot, fi ll the unit with
antifreeze and water heating solution. Without the solution
present, the Aqua-Hot will not operate, it will not deliver hot
water, and it will not deliver heat. Follow the directions below
to fi ll the Aqua-Hot with antifreeze and water heating solution.
In order to provide the best freeze protection, boil-over
protection, anti-corrosion, and rust protection, a mixture of 50/50
propylene glycol antifreeze and distilled water is recommended.
The Aqua-Hot 600D boiler tank holds approximately 16 gallons.
The mixture may be modifi ed to provide the most adequate
freezing, boiling, and rust/anti-corrosive protection. A 50/50
mixture of propylene glycol and distilled water has a freeze
point of approximately -34°C (-29°F) and a boiling point of
approximately 106°C (223°F). Reference page 54 for properly
measuring the antifreeze mixture with a refractometer.
Fill Instructions:
1. Locate the following items:
-Exterior fl uid pump (a diagram pump if possible)
-The Aqua-Hot fl uid expansion tank
-A bucket or pale
2. Fill the bucket with the heating solution. Ensure the fl uid
expansion tank is connected to its port on the Aqua-Hot.
3. Open the Aqua-Hot’s drain valve located at the front of the
heater. Reference Figure 81.
4. Connect the external fl uid fi ll pump to the fl uid drain valve.
A ½” NPT barbed fi tting is best for this task.
5. Place the supply line of the external pump in the receptacle
that contains the heating solution.
NOTE: Do not fi ll this unit completely. Filling the unit
completely runs the risk of air-locking, preventing the heating
zone from correctly circulating and draining the air.
Figure 81
Fluid Fill Port
Expansion Tank Port/
Air Release Valve
Freeze
Point (°C)
Concentra-
tion (%)
0 -4 -7
-9 -12 -15 -18 -23 -29 -34 -40 -46
0 12 19 25 30 34 38 44 49 53 57 60
Propylene Glycol
NOTE: The Aqua-Hot’s boiler tank must be fi lled with the
antifreeze and water heating solution through the drain
valve, not through the top of the unit, to avoid air traps.
Only propylene glycol based “boiler” type antifreeze deemed
“GRAS” (Generally Recognized As Safe) by the FDA shall be
used in the Aqua-Hot’s hydronic heating system. Failure
to use the above specifi ed antifreeze type could result in
serious injury or death.
Figure 80
Ensure that the overfl ow tube is connected from the Aqua-Hot’s
expansion tank connection to the expansion tank’s bottom
connection. Also from the expansion tank’s top connection
through the overfl ow tube hole in the motor homes bay fl oor prior
to beginning this fi ll procedure. Failure to do so could result in an
antifreeze spill the motor home’s bay.