Aqua-Hot AHE-120-04X, Owner'S Manual

Aqua-Hot™ Hydronic Heating System Owner’s Manual  07/04

SECTION 3:  OPERATING INSTRUCTIONS

The combustion process will 

continue to operate in this 

manner until one of the following

   occurs:

A.)

 The 

VDC / VAC Control 

Thermostat

, which senses 

coolant temperature, reaches the 

preset temperature of 

approximately 190 (+/- 5) 

degrees Fahrenheit

.

NOTE:

If process "A" occurs, the 

Heating Status

 and 

Diesel-

Burner Status

 lights on the 

Electronic Controller

 will go 

OFF

; reference Figure 6.

B.)

 The Aqua-Hot’s 

Diesel

 switch 

is turned 

OFF

.

NOTE:

If process "B" occurs, the 

Diesel

switch’s

Indicator Light

, on the 

Switch Panel

 (reference Figure 

2), will go 

OFF

 along with the 

Heating Status 

and

Diesel-

Burner Status

 lights on the 

Electronic Controller

; reference 

Figure 6.

SUMMARY:

The Aqua-Hot’s 

Diesel-

Burner

 is in stand-by 

mode anytime the operator 

  moves the 

Diesel

 switch 

(reference Figure 2) to the 

ON

 position. The 

Diesel-

Burner

 will then 

automatically ignite and 

maintain the coolant 

temperature in the Aqua-

Hot’s Boiler Tank without 

additional involvement 

from the operator.

1.)

 The 

Motor (#2)

 will 

shut-off once the three (3) 

minute

purge-cycle

 has 

expired.

-THEN-

2.)

 The Aqua-Hot’s 

Diesel-

Burner

 will automatically 

turn back 

ON

 once the 

coolant temperature

reaches the preset 

temperature of 

approximately 160 (+/- 5) 

degrees Fahrenheit.

The

Motor (#2)

 will 

continue to run for 

approximately three (3) 

additional minutes. This 

process is refered to as 

the

purge-cycle

, which 

cools down the heater’s 

internal components 

and purges the 

Combustion Chamber 

(#11)

 of any residual 

exhaust gases.

Once the heater switches 

OFF

, thermostatically or 

manually, the 

Fuel

Solenoid (#6)

 closes, 

which interrupts the supply 

of diesel fuel to the 

Fuel

Nozzle (#9)

.

NOTE:

When the Aqua-Hot’s 

Diesel-Burner

 is switched 

OFF

, by the 

VDC / VAC 

Control Thermostat

, the 

following process will take 

place:

3.5  Diesel-Burner Operational Flow-Chart

, continued

Diesel-

Burner

Operational

Flow-Chart

,

continued

Important

Information

SECTION 3:  OPERATING INSTRUCTIONS

3.6  Precautions

WARNINGS:

• The Aqua-Hot's Exhaust is HOT!

• DO NOT

 park in areas where dry conditions exist underneath the

vehicle, as a fire may result (e.g., in a dry, grassy field).

• DO NOT

 operate the Aqua-Hot’s Diesel-Fired Burner inside an

enclosed building.

•

The Heater should be switched 

OFF

 when refueling.

CAUTION: DO NOT 

operate the Diesel-Burner and/or the Electric

Heating Element(s) without the water and antifreeze solution in the Aqua-

Hot’s Boiler Tank.  Failure to do so will cause 

serious damage

 to the

Heater.

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