Installation
6 720 800 414
(2011/09)
17
4.6
Starting up
4.6.1
Checking for leaks and purging air
B
Verify all circuit breakers supplying power to the
water heater are turned off.
B
Open all hot water taps supplied by the water heater
and inspect all water connections for leaks.
B
With all hot water taps still open, inspect each tap to
ensure all air in the lines has been purged out.
B
With the air purged and taps still flowing, turn on all
circuit breakers supplying the water heater.
B
Close all hot water taps and proceed to the next
section.
4.6.2
Adjusting the temperature dial
B
The temperature adjustment is made using the dial on
the bottom edge of the unit. The adjustment is
between approximately 95 °F and 131 °F. Turning the
dial clockwise increases the temperature setting as
indicated by the marking on the unit.
4.6.3
Adjusting the flow
B
Open fully both inlet and outlet shut-off valves at the
heater, then:
B
Turn on fully the highest flowing hot water faucet
(e.g., bathtub) served by the water heater.
B
Adjust the outlet shut-off valve until the water flow
rate from the hot faucet corresponds to the value
given in Fig. 11 below.
Fig. 11
For example:
•
For the AE115 unit, using the outlet ball valve, ensure
the flow rate does not exceed 2.3 gallons/minute.
•
For the AE125 unit, using the outlet ball valve, ensure
the flow rate does not exceed 3.5 gallons/minute.
These figures are based on an inlet water temperature of
55 °F and a supply voltage of 240 volts. If the inlet water
temperature is lower than 55 °F, or if the supply voltage
is less than 240 volts, then the outlet temperature will be
lower than what is shown in Fig. 11. If a higher outlet
water temperature is desired, then reduce the flow rate
and/or supply the unit with 240 volts.
95
100
105
110
130
115
120
125
135
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Outlet temperature (ºF)
MaxFlowRate(USgal/min)
Outlet temperature vs Maximum flow rate setting
(based on incoming water temperature of 55ºF)
17kW Heater
27kW Heater
6720646951-09.1V
131
Before leaving the site, the installer should
demonstrate the unit to the user and give
them this guide.
