•The outlet water temperature can also vary if the maximum flow rate is exceeded (see Graph 1) or if the supply voltage changes.
•Each heater module is protected by an
•The AE115 unit is supplied from two independent voltage supplies and the AE125 unit from three independent voltage supplies. The unit may continue to work if one of these supplies is switched off or fails, but the temperature control will be poor. (In Canada the unit has just one voltage supply).
•Depending on the region of the country, the temperature of the water supply can vary between 40°F in winter to 70°F in summer, with an average of 55°F.
Diagram 4: Internal wiring schematic for single phase AE125 unit. (AE115 has two heater modules and
two supplies). (In Canada an auxiliary terminal block is fitted during installation).
For clarity
Wiring Diagram for AE125, 3 x 240V supply. PowerStar heater.
The positions of terminals shown here do not correspond to 
their positions on the installer terminal blocks
L2C
L2B
L2A
L1A
L1B
L1C
Flow transducer
CUTOUT
MODULE A
CUTOUT
MODULE B
Brass inlet manifold and Triac heat sink
CUTOUT
MODULE C
Thermistor
Electronic PCB
Temperature adjustment potentiometer
Specifications
| AE115 Unit | AE125 Unit |
Voltage supply | 2 x 240V AC (Canada 240VAC) | 3 x 240V AC (Canada 240VAC) |
Amperage | 2 x 40 A (Canada 80 A) | 3 x 40 A (Canada 120 A) |
Maximum output | 17.25 kW | 26.85kW |
Temperature control range | 95°F to 131°F | 95°F to 131°F |
Pressure range | 15 psi to 150 psi | 15 psi to 150 psi |
Minimum flow rate | 0.6 US gal / min | 0.8 US gal / min |
Maximum flow rate | See Graph 1, Page 8 | See Graph 1, Page 8 |
Dimensions (excl. water couplers) | 15½” H x 151/4” W x 4½” D | 15½” H x 151/4” W x 4½” D |
Weight (without water) | 20 lbs | 22 lbs |
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