Product Overview

Mounting Do not twist or exert any force on the actuator housing during installation. Either turn the

base by hand or, if necessary, use a 1-5/8" (41 mm) open-ended wrench (TOOL-37) on the

flats provided on the actuator base or the valve body mounting nut. Refer to Figure-2.

Figure-2 Housing and Base Location.

Dampers

The actuator is not position sensitive. It can be mounted in any position in a NEMA Type 1

location.

Valves

Allow 3" (76 mm) of clearance above the actuator valve assembly for the removal and

reattachment of the actuator to the installed valve.

1. Install all two-way valves so that they close against the flow. An arrow on the valve body

or tag indicates proper flow direction.

2. Always install three-way mixing valves with two inlets and one outlet.

3. Always install three-way diverting valves with one inlet and two outlets.

Caution:

For steam applications only, mount the actuator above the valve body at 45°

from vertical.

4. Actuators can be mounted in any upright position above the centerline of the valve

body.

Wiring Requirements Power Leads

The low voltage (24 Vac) power leads may be connected to a Class 2 circuit if routed

separately from Class 1 circuit wiring. The line voltage (120 and 240 Vac) leads must be

connected to a Class 1 circuit. Refer to Figure-7.

Refer to Table-4 for the maximum length of run for the power leads, for the given wire

size(s). To determine the allowable maximum power lead run when wiring multiple

actuators, divide the maximum run shown in Table-4 by the number of actuators on the run.

Refer to Figure-3 for further details.

Housing

Base

Wrench Flats