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AHE-450-DE2

This model of Aqua-Hot uses the special Camco -100 Boiler coolant.

This model may also be known as:

AHE-450-D

Changes From Previous Model

• Solid fuel lines (instead of rubber fuel lines that are in all previous models)
• NO RADIATOR cap - Zero pressure system
• Recommended exhaust pipe is 2" ID (up from 1 5/8")
• Has case interlock switch that will not allow burner to run until switch is depressed
• High limit thermostats are now set to trip at 215° (up from 220°)
• Some heaters in this series have tank liquid SENSOR in place of the mechanical float switch.  This tank level sensor is no longer available, see replacement below.
• Coolant lines check valves are now mounted horizontally
• Aqua-Hot is installed in a 'tray' that is installed first.  Aqua-Hot is then mounted in coach using this tray.

Part Notes

• Control Thermostat -   ELE-014-005
• Electric high limit thermostat - ELE-HLT-322   -or- with terminals crimped on  ELE-ASY-200-HYD
• Diesel high limit thermostat -  ELE-HLT-322 
• Control Board -  ELE-PC4-010  This control board will directly replace the 008 and 009 models.  You may have to crimp different (larger) terminals on 12-VDC supply wires.
• Tank level sensor (float switch) - ELX-800-002 - Brass float
• Zone, stir and engine preheat pumps (are no longer available).  Pump upgrade kit, here: PLE-100-905-FRU
• Radiator cap - PLX-102-229
• Uses 'screw in’ Low Temperature Cutoff Thermostat - ELE-000-606
• Reconditioned Webasto burner - WPE-905-834-R

Routine service parts and kits - Routine Service Parts      Scroll down page for filter and nozzle packages.

Common Problems

• Stir pump failure -  Upgrade kit, here:  PLE-100-905-FRU
• Rubber boot on air intake for Webasto.  Recommend removing rubber boot because it can restrict air intake into Webasto burner.  Kit to cover air intake with screen is here:  Air Intake Screen

Service Manual

On Aqua-Hot website   AHE-450-DE2  Scroll down page in "Discontinued Aqua-Hot Products" section