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CSP-4702 

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Installation Guide

Installation Guide

Analog Differential-Pressure VAV Controller/Actuator

CSP-4702 

 

Mounting

Illustration 1—Overview (Direct-Coupled Mounting) 

approximately 5° may provide tight 

damper shut-off.

3.  Align the actuator and slide it onto the shaft.
4.  Leaving a small gap between the actuator and 

mounting surface to prevent any binding, finger-

tighten the nuts on the V-bolt.

5.  Insert the provided (HMO-4002) non-rotation 

bracket into the slot at the base of the actuator 

and secure the non-rotation bracket with two #8 

or #10 self-tapping screws.

6.  Evenly tighten the V-bolt nuts (30–35 in-lb.).
7.  If desired, use a 7/64-inch hex key wrench to 

loosen and position the end-stop screw.

NOTE:  The two holes at the top of the actuator 

are NOT for use in direct-coupled 

applications.

 (They are for 

remote

 

mounting, such as with the optional HLO-

4001 Crank Arm Kit.)

NOTE:

  For VAV applications with the analog 

CTE-5202 thermostat, see the 

CTE-5202 

Applications Guide

. For static pressure 

controller applications, see the 

CSP-

4702 Static Pressure (Bypass) Control 

Application Guide

.

The CSP-4702 mounts directly to 1/4- to 5/8-inch (6 to 

16 mm) round shafts or 1/4- to 7/16-inch (6 to 11 mm) 

square shafts.
1.  Ensure the damper can move freely through its 

entire range of motion, and fix any binding before 

installing the actuator. Turn the damper blade to 

its fully closed position.

2.  Press (to the right) and hold the gear disengage

-

ment lever (see Illustration 1), rotate the actuator 

to the fully closed position, and release the lever.

NOTE:

  Depending on the damper-seal design, 

backing the actuator off its stop 

HMO-4002

Non-Rotation

Bracket

Mounting

Surface

 5.312
(134.9)

Adjustable Stop

Min/Max

Flow Limit

Meter Taps

Min/Max

Flow

Setting

Pots

Open &

Close

LEDs

2.50

(63.5)

2.812
(71.4)

 2.60
(66.0) 

Gear 

Disengagement Lever

1.563
(39.7)

P Ports

Barbed

Connections

for 1/4" FR

Tubing

Removeable Conduit Fitting
with 1/2" NPS Threaded Hole

Mounting .........................................................................................................1
Wiring Connections .........................................................................................2
Rotation Direction ...........................................................................................2
Air Pressure Connection ...................................................................................2
Min. and Max. Flow Limits ...............................................................................3

Limits Set at the CSP-4702 ...........................................................................3
Limits Set at the Thermostat .........................................................................3

Operation Test ..................................................................................................3
Maintenance ....................................................................................................3
Troubleshooting ...............................................................................................4

No Rotation ..................................................................................................4
Wrong Rotation Direction or Stroke Range ..................................................4
No Pressure Output Signal ...........................................................................4
Wiring Issues ................................................................................................4

Static Pressure Control .....................................................................................4
More Information .............................................................................................4
Important Notices ............................................................................................4

Summary of Contents for CSP-4702

Page 1: ...Crank Arm Kit NOTE For VAV applications with the analog CTE 5202 thermostat see the CTE 5202 Applications Guide For static pressure controller applications see the CSP 4702 Static Pressure Bypass Control Application Guide The CSP 4702 mounts directly to 1 4 to 5 8 inch 6 to 16 mm round shafts or 1 4 to 7 16 inch 6 to 11 mm square shafts 1 Ensure the damper can move freely through its entire range ...

Page 2: ... see the CSP 4702 Static Pressure Bypass Control Application Guide NOTE For VAV applications the SSS 1000 series differential pressure flow sensor must be mounted with the arrow pointing in the direction of the air flow To connect to 1 4 inch tubing from the CSP 4702 an SSS 100x differential pressure flow sensor requires a 3 8 to 1 4 barb union adapter and 1 of 3 8 OD x 0 062 FR tubing for both co...

Page 3: ...ect either the controller s or the thermostat s limits Limits Set at the CSP 4702 To set the minimum and maximum flow limits at the CSP 4702 with thermostat supplying 2 10 VDC 1 Ensure the thermostat output is 2 10 VDC For the CTE 5202 thermostat see the CTE 5202 Applications Guide 2 Loosen the screw on the conduit fitting and lift up to remove the fitting 3 Connect a voltmeter to the meter taps T...

Page 4: ...sition See Rotation Direction on page 2 Check the polarity and level of the input signal from the thermostat Wrong Rotation Direction or Stroke Range Check the position of the direction jumper See Rotation Direction on page 2 Check the flow limits on the controller and the thermostat See Min and Max Flow Limits on page 3 Check the adjustable stop position No Pressure Output Signal Check the wiring...

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