Potable Water Circulators

AQS-1/2 and AQS-3/4 Aquastat

Aquastat is designed to thermostatically turn any B&G NBF circulator ON and OFF. The AQ-1/2 or AQ-3/4 will switch the pump OFF at 120°F (48.9°C) and ON at 100°F (37.8°C). The aquastats are available in separate models that will sense the temperature for either 1/2” or 3/4” copper pipe.

AUTOMATIC TIMER KIT and AQUASTAT COMBINATION – The automatic timer and aquastat kits can be used in combination. When they are used together, the pump will only circulate water when the ON time conditions are met and when water temperature is low enough to cause the aquastat to switch ON.

Features and Benefits

Thermostatic Switch Modes: OFF (open) at 120°F (48.9°C) water temperature and ON (closed) at 100°F (37.8°C) water temperature.
Thermostatic Element: Bimetal, senses surface temperature of outside diameter of pipe.
Pipe Size: AQS-1/2 clips onto 1/2″ copper pipe or 3/8″ steel pipe (OD of pipe 5/8″). AQS-3/4 clips onto 3/4″ copper pipe or 1/2″ steel pipe (OD of pipe 7/8″).

Mounting: May be installed to sense temperature at the suction or discharge pipe of the pump.
Thermostat Covering: Epoxy (Environmentally Sealed)
Pipe Clip: Stainless Steel
Sensing Element: Bimetal
Wire Leads: Insulated 18″ (457mm) #18 AWG
UL approved.
Connects to the lead wires in the connection box of any Bell & Gossett NBF/NRF/SSF circulator.
Suitable for 115/120V, 60 HZ operation.
Provides thermostat control to the circulator. It will turn OFF (open) at 120°F (48.9°C) water temperature and ON (closed) at 100°F (37.8°C) water temperature.

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