Beckett 7600 AquaSmart Operation, Control Checkout Procedure, System Action AquaSmart Response

AquaSmart Operation

Table 4 – Typical operation with default settings (Circulator set “ON TT”)

System Action	AquaSmart Response
	○ Burner is turned on until the water temperature reaches the low
Temperature falls below low limit	limit plus the low differential.
	○ ZC is turned off until the water temperature reaches the low limit
	plus the low differential.
	○ Burner is turned on as long as the water temperature is below
Thermostat call for heat	the high limit.
	○ Circulator is turned on after circulator-on delay if the low limit is
	satisfied.
Thermostat is satisfied	○ Burner is turned off.
	○ Circulator is turned off after circulator-off delay
ZR call for heat	○ Burner is turned on as long as the water temperature is below
	the high limit.
ZR is satisfied	○ Burner is turned off.
Temperature reaches high limit	○ Burner is turned off until the water temperature falls below the
	high limit minus the high differential.
Circulator is inactive for 3 days	○ Circulator is turned on for 2 seconds to help prevent seizure.
	○ Burner, Circulator, and ZC are turned off until the control is
AquaSmart locks out	reset. The lockout condition may reset automatically or require
	a manual reset. See lockout section for more information.
B1 has been energized for 1 hour or	○ Circulator and ZC are turned on to help prevent system freeze-
AquaSmart has been locked out for 1 hour	up by circulating the boiler water to all zones.
	○ If DHWP is set on T-T and there is a T-T call for heat, ZC is held
Priority call for heat	off for up to 20 minutes to give the DHW zone priority.
	○ If DHWP is set on ZR and there is a ZR call for heat, C1 is held
	off for up to 20 minutes to give the DHW zone priority.

Control Checkout Procedure

These procedures are typical for the default configuration of the control.

1.Wire and configure the AquaSmart as required by the application.

2.NOTE: Do not apply a thermostat call for heat to the AquaSmart at this time. Allow the burner to heat the water to above the low limit, plus the low limit differential. The display should read “HEATING WTR” on the LCD display (B1 should be energized and C1 and ZC should be off).

3.When the water is sufficiently heated, the burner will turn off and the display should read “STANDBY”. Now ZC should be energized and B1 and C1 should be off.

4.Apply a call for heat from the thermostat. The burner and circulator should now also turn on (B1, C1, and ZC should now all be energized). Allow the AquaSmart to heat the water to the high limit. During this step the display should read “HEATING WTR or “HEATING DHW”.

5.Once the high limit is reached, the burner should turn off (C1 and ZC should now be energized, and B1 should be off). The display should now read “CIRCULATING”.

6.Set the thermostat back, so that it is no longer calling for heat. The circulator should turn off (now ZC should be energized and B1 and C1 should be off). The display should now read “STANDBY”.

Do not leave the installation site if the AquaSmart

operation did not match the descriptions in any of the above steps. Make all necessary adjustments until the correct operation is verified. The above procedure helps to verify that the high and low limits are working properly and that the thermostat is wired correctly to the control.

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