Beckett 7600 manual Wiring the AquaSmart Control, Some Thermostats Are Polarity Sensitive

Explosion Hazard. Can Cause Severe Injury, Death

or Property Damage.

Use this product only in systems with a pressure relief valve.

Wiring the AquaSmart Control

○Consult the appliance wiring diagrams to check the manufacturer’s specifications.

○Refer to Figure 12 through Figure 17 for some typical wiring diagrams.

○Verify the wires are still labeled correctly and make connections to the appropriate terminals on the control wiring terminal strip.

○Provide disconnect means and overload protection as required on power supply.

○Connect control conduit bracket to earth ground using the supplied grounding screw.

○B1 terminal is a 1/4 in. tab terminal (quick connect).

Some Thermostats Are

Polarity Sensitive

Reversed polarity could cause erratic cycling of the boiler control.

yConnect the red thermostat wire (from the RH or R terminal of the thermostat) to the TR terminal on the control.

yConnect the white thermostat wire (from the W terminal of the thermostat) to the TW terminal on the control.

Figure 11 - TR, B2, & Vent Damper Connections

TR

6-Position Vent

Damper Receptacle

B2

Observe proper polarity when wiring L1 and L2. If polarity is reversed, a

call for heat on the ZR input may not be recognized.

7600B only: TERMINALS TR (Z or hot) and B2 (TV or ground) offer a

24-volt supply for operating other 24 VAC equipment on the boiler. IMPORTANT: TO PREVENT DAMAGE TO

THE CONTROL, DO NOT OVERLOAD THE TRANSFORMER. The AquaSmart is equipped with a 30VA transformer. Make sure that the total load, including the burner circuit and TR & B2 connections do not exceed 30VA. See Figure 11.

How to calculate VA - Add all AMP ratings of 24VAC components in this circuit and multiply sum by 24 volts. (Example: .4 + .4 + .2 + .2 = 1.2A x 24V = 28.8 VA)

When powering multiple circulators from the C1 and C2 terminals, take extra care not to exceed the output’s reading. If the sum

of the full load amps of all the circulators exceeds the output’s rating, use the C1 and C2 terminals to power the coil of a multiple-pole contactor; the contacts of which can be wired to switch L1 to each circulator.

To wire a vent damper to the 7600B, first remove jumper plug from 6-

position receptacle and then connect 6-pin connector of the vent damper to the receptacle. See Figure 11. Once the 7600B is operated with a vent damper, it will not function without one (even if the jumper plug is replaced).

Water Flow Symbols Key (Figures 12 through 17)

-Air Vent

-Air Separator

-Expansion Tank

-Isolation Valve

-Pressure Regulator

Z- Zone Valve

-Check Valve

-Circulator

AquaSmart Boiler Control Manual

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