Greenheck MS7505 Installation Manual

Part number 473389

MS7505 & MS8105 Series Actuators

Models MS7505A2030, MS7505A2130 and MS8105A1130 Series

INSTALLATION INSTRUCTIONS

These instructions apply to the external field installation of the Honeywell actuators on Greenheck models VCD Control Dampers when they are duct mounted or sleeved.

These models are direct drive actuators that rotate to their energized position when power is applied, and spring return to their fail position when power is disconnected.

Part No. Quantitiy Description

1 1 Drive Shaft or Extension Pin

Tools Required:

Wrenches: (1) 7⁄16 in., (1) 3⁄8 in.

(1) Ratchet with

(1)

⁄8 in. deepwell socket

⁄8 in. Allen wrench

2 5 1/4-20 Spinlock Nut

3 1 Actuator

4 1 Standoff Bracket

5 1 Anti-Rotation Bracket

6 4 Thread Stud

7 1 5/16 in. x 3/8 in. shoulder bolt

8 4 #14 x 3/4 Tek Screws

Figure 1: Honeywell MS7505 & MS8105 Series external mount (exploded view).

WARNING

Equipment Damage or Electrical Power Hazard. Line voltage can cause death or serious injury and short equipment circuitry. Disconnect power supply before installation.

CAUTION

Device Malfunction Hazard. Improper set screw tightening causes device malfunction. Tighten set screws with proper torque to prevent damper shaft slippage.

Torque Set Screws to 50-55 in. lbs. (5.6-6.2 Nm)

Note: Actuator shaft collar accepts 1/2 in. (13mm) diameter shaft. Shaft rotation designated from this side of actuator.

These installation instructions assume the damper is already mounted in a duct or sleeve with the damper shaft extending beyond the duct or sleeve 6 inches (152mm).

1. Install the stand-off bracket

Dampers with a jackshaft

1a. Jackshaft supplied is typically 1/2 in. (13 mm) diameter.

Mount the stand-off bracket (item 4) with [4] #14x ¾ in. (M6 x 19) TEK screws (item 8). Orient the stand-off bracket (item 4) so the hole is centered on the jackshaft (See Figure 1).

Dampers without a jackshaft (Shaft Extension) 1b. Mount the stand-off bracket (item 4) spanning across

the damper frame flanges. Fasten to the damper frame with [4] #14x ¾ in. (M6 x 19) TEKscrews (item 8). Be sure not to run the screws into the damper linkage, which is between the flanges.

2. Mount actuator bracket

Fasten the actuator bracket (item 5) (See Figure 1) to

the standoff bracket (item 4) using [4] ¼-20 x ½ in. (M6 X 20mm) thread studs (item 6) and [4] ¼-20 (M6) nuts (item

2). Use outer four holes of the actuator bracket (item #6).

3. Fail Position If fail position is closed, make sure damper blades are

fully close and ensure blade seals are compressed prior to tightening the actuator clamp to the damper extension pin or jackshaft.

4. Install the actuator

Install the actuator (item 3) over the damper drive shaft

and tight against the actuator bracket (item 5). Install [1] 5/16 in. x 3/8 in. (8mm x 9.5mm) shoulder bolts (item 7) through lugs on actuator and through the holes in back of the actuator bracket (item 5). Secure with [2] ¼-20 spinlock nuts (Item 2) (See Figure 1).

5. Secure actuator (Item 3) to drive shaft by tightening the set screws on actuator collar to 50-55 in. lbs. (5.6 - 6.2 Nm).

6. The wiring illustration identifies actuator electrical requirements and connections. Wiring must comply with all applicable electrical codes.

7. Apply power to the actuator. The damper blades should fully open or close and return to the fail position when power is disconnected.

IMPORTANT

For actuators with a product date code before 0527m

a power break of less than two seconds can cause the actuator to spring-return 5 degrees or less and remain in place until a power break of longer duration. For actuators with a product date code of 0527 or after, a power break of any duration will cause the actuator to spring-return and be able to drive immediately when power is reapplied.

FATPA DIRECT DRIVE SERIESINSTRUCTIONS

Power Consumption

Model Volts Running Auxillary

Switch

MS8105A1130 24 8VA Yes

MS7505A2130 24 8VA Yes

MS7505A2030 24 8VA No

Actuator Weight

3.5 lb (1.6 kg).

Noise Rating

Driving Open: Maximum 50 dBA at 1m. Holding: Maximum 20 dBA at 1m (no audible noise).

Temperature Ratings

Ambient: -40°F to 150°F (-40°C to 65°C) Shipping and Storage: -40°F to 150°F (-40°C to 65°C)

Humidity Ratings

5% to 95% RH non-condensing.

Environmental Protection Ratings

NEMA 2 IP54

Actuator Timing (Under Load)

Drive Open: 45 or 90 seconds. Spring Close: 25 seconds.

IOM - MS7505 MS8105 Rev 1 March 2010