Dwyer Instruments A-464 User manual

The A-464 mounting kit provides a flush mounting solution for

Magnehelic®Gage installations in applications such as clean

rooms and mechanical equipment rooms. The A-464 can also

be used as an alternative means to flush mount Magnehelic®

Gages on control panel enclosures.

Utilizing the A-464 for Magnehelic®Gages installations reduces

installation time while also producing an aesthetically pleasing

result.

INSTALLATION

Wall Mounting

1. Select a suitable location complying with the gage manufac-

turer's recommendations. The most common location for room

pressure measurement is on the wall next to the door entering

the room at the 5 ft. level. The wall depth must be at least 2-1/2

in. and clear of any obstructions.

Note: Always check for proper clearance before cutting any

holes.

2. Using the mounting plate (A1) as a guide, mark the wall for

the gage opening, local room reference fitting and mounting an-

chors.

3. Cut out the opening and drill the anchor holes with a 3/16 in.

drill and install the wall anchors (A3).

4. Install the gage on the mounting plate using the hardware

provided with the gage. Make sure to square the gage with the

mounting plate ensuring the jack screws contact the three

mounting ears.

5. Push one of the plastic tubing pieces (A5) onto the reference

fitting and onto the appropriate fitting on the back side of the

gage.

Note: For most applications this would be the low port. Cut the

tube to the length required. Tubing should not kink after instal-

lation.

Back View showing mounting and tubing

connections.

Front View showing mounted gage.

Parts List

A1 – Gage mounting plate

A2 –Wall anchor screws

A3 – Plastic wall anchors

A5 – Plastic tubing

6. Install the remaining piece of plastic tubing onto the uncon-

nected port on the back side of the gage. Connect the other end

of the tubing to the room pressure sensor located in the room

being measured.

Note: The accessory space pressure sensor kit A-465 provides

an ideal solution for remote room sensing.

7. Insert the assembly into the wall taking care to avoid kinking

the tubing. Secure the mounting plate to the wall with screws

(A2).

8. To calibrate the gage equalize the pressures being sensed

(i.e., open the room door and/or shut down the air handler), and

zero the gage.

A-464 shown with A-465 Space Sensor (sold separately)

A-464 Magnehelic®Differential Pressure Gage Mounting Kit

Installation and Operating Instructions

Bulletin A-27-M

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]

A-27-M:A-27-M 4/3/09 10:31 AM Page 1

Panel Mounting

Panel mounting is accomplished following most of the steps

listed for wall mounting. Some of the differences are listed

below:

• Use the appropriate length and type of mounting screws for se-

curing the mounting plate (A1) to the panel.

• If the high and low references are remote from the panel, con-

nect the pressure sensing tubing to the appropriate ports on the

gage.

• If clearance behind the gage is a concern, the side ports on the

gage may be used. To use the side ports, install the factory

supplied plugs on the back ports and install the barbed fittings

supplied with the gage on the side ports.

Note: Install the barbed fittings on the side ports after the gage

is mounted on the panel.

LOW

HIGH

LOW

HIGH

INSTALLATION DIAGRAM

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]

A-27-M:A-27-M 4/3/09 10:31 AM Page 2

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