Install Instructions

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English (US)

3.2 Electrical installation

3.2.1 Wiring connections

• All electrical connections must be made

using copper wire only.

• 12-16 AWG wire is recommended for 120

VAC connections.

• 12-22 AWG wire for thermostat connections.

• 12-22 AWG wire for 24 VAC connections.

• Use approved UL conduit fittings.

You can find additional wiring schematics,

specs, and troubleshooting help online at

www.grundfos.us/controls.

Caution

CAUTION

Class 2 wiring must be segregated

from the wiring of Class 1 circuits.

When Class 2 wiring is routed with

Class 1 wiring, the Class 2 wiring

insulation must be rated for the

minimum voltage of the Class 1

wiring. Segregation is not required if

all circuits are wired as Class 1,

electric light or power circuits.