CaptiveAire EXA60 Installation Manual

EXA Valve Series Operating Instructions

EXA40, EXA50, EXA60 Valve Operating Instructions

Inappropriate and/or improper installation, adjust­ment, alteration, service or maintenance can cause
property damage, injury or death. Read the instal­lation, operating and maintenance instructions thor­oughly before installing or servicing this equipment.

Read these instructions carefully. Failure to fol-

low them could result in a re or explosion causing

property damage, personal injury, or loss of life. The
product must be installed and operated according to
all local regulations.

Service and or installation must be performed by a
trained experienced service technician.

Disconnect power before installation to prevent elec­trical shock or equipment damage.

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Do not touch electrical switches.

3. Extinguish any open ame.

4. Immediately call the gas supplier.

FOR YOUR SAFETY

The use and storage of gasoline or other ammable

vapors and liquids in open containers in the vicinity of
this control or other appliance is hazardous.

Installation shall conform with local codes. or in the
absence of local codes, in accordance with the Na­tional Fuel Gas Code ANSI Z223.1/NFPA54 or CSA
B149.1 as is applicable, and operated in accordance
with the manufacturer’s instructions. These instruc­tions do not supersede OEM’s installation or operat­ing instructions. Installation, inspection, and replace-

ment must be performed by a qualied installer or

gas supplier.

Figure 1: EXA Valve

DESCRIPTION

The EXA series are highly accurate and precise modu­lating control valves. EXA valves provide repeatable
process control with minimal hysteresis throughout the
entire range of modulation.

The valves’ high re setting and low re setting are user

programmable.

INTERFACE

The EXA valve has a built-in digital controller that pro­vides a seamless interface with

a process controller.

This control must be electrically wired in accordance
with local codes, or in absence of local codes, with
the National Electrical Code, ANSI/NFPA 70 or the
Canadian Electrical Code, CSA C22.1 as applicable.

© 2009 Maxitrol Company, All Rights Reserved

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EXA Valve Series

SPECIFICATIONS

Maximum Inlet Pressure Limits: 5 psi

Power Requirements: 24VAC/DC +/- 10% 50/60hz

NOTE: The 24V power must be isolated from the
control signal.

Maximum Current Draw: 200mA.

Temperature Limits:

-40 to 150ºF Operating

Control Signal:

0-10VDC, 2-10VDC, 0-20mA, 4-20mA, (user selectable)
100KOhm Input impedance

Mounting: Multipoise

Gases:

Suitable for natural, manufactured, mixed gases, lique-

ed petroleum gases and LP gas-air mixtures.

Certications:

EMC (EN 61000:2001)

•
Immunity (61000-6-2:2001)

•
Emissions (61000-6-4:2001)

•

UL Recognized

•

DIMENSIONS

Dimensions are to be used only as an aid in designing
clearance for the valves. Actual production dimensions
may vary somewhat from those shown.

D

E

A

B

C

Figure 2: EXA Valve Dimensions

Enclosure: IP40

Electrical Connection: UL310

Sizes:

EXA40: 3/8”, 1/2” NPT or Rp ISO 7-1
EXA50: 1/2”, 3/4” NPT or Rp ISO 7-1
EXA60: 3/4”, 1” NPT or Rp ISO 7-1

Capacity @ 1” Pressure Drop - 0.64 sp. gr. gas:

EXA40 (3/8”) ............... 217 cfh

EXA40 (1/2”) ............... 242 cfh

EXA50 (1/2”) ............... 434 cfh

EXA50 (3/4”) ............... 524 cfh

EXA60 (3/4”) ............... 733 cfh

EXA60 (1”) .................. 815 cfh

Model

Number

EXA40

EXA50

EXA60

Swing

Radius

4

(102)

4.3

(110)

4.6

(117)6 (153)

(122)1 (26)

(140)

Dimensions

in inches (millimeters)

A B C D E

4.8

5.5

1.3

(34)

1.5

(39)

2.1

(54)

3.4

(87)

4.1

(105)

3.7

(94)

3.7

(94)

4.1

(105)

2.4

(61)

3.3

(84)

3.9

(100)

© 2009 Maxitrol Company, All Rights Reserved

2

EXA Valve Series

The EXA valve has full open and full close mechanical
limits. The user can program settings that are within
the valve’s mechanical limits. This added dimension for
sizing and applying the valve is an important feature.
It allows the valve to be set up for an entirely different
net output characteristic (dependent upon supply pres­sure).

The control signal is “scaled” between the high and low

re setting of the valve. The minimum control signal
will correspond to the programmed low re setting and

the maximum control signal will correspond to the pro-

grammed high re setting.

There are four (4) electrical connections on the EXA
valve. Two (2) are for power requirements and two (2)
are for the control signal (see Figure 4).

Button 1 = High Set / Increase

Button 2 = Low Set / Decrease

Button 1

Control Signal

DIP Switches

Button 2

Power
Requirements

LED Display

Connection Table

Terminal 1 Terminal 2 Terminal 3 Terminal 4

Signal (+) Signal (-) Power 1 Power 2

Terminal 1
Terminal 2

Figure 4: EXA Valve Terminals

Terminal 4
Terminal 3

DIP Switches:

A three (3) position DIP switch is located on the PCB

(see gure 3). Change the signal type and offset by

changing the position of DIP switches. (For DIP switch
position and corresponding current/voltage ranges, see
table below).

Figure 3: EXA Valve Control Signal and Power Requirements

Control Signal:

The control signal drives the EXA valve within a pro­grammable range of modulation.

NOTE: Control signal is polarity sensitive. Connect
control signal positive (+) to terminal 1 and control sig­nal return (-) to terminal 2.

© 2009 Maxitrol Company, All Rights Reserved

DIP Switch Position Table

Control

Signal

0-10V OFF OFF OFF

2-10V OFF ON OFF

0-20 mA ON OFF OFF

4-20 mA ON ON OFF

SW1

Signal

SW2

Offset

SW3

Characteristic

3

EXA Valve Series

OPERATION

Step 1: Remove 2 screws holding cover.
Step 2: Connect switched OFF 24 V (AC/DC) power
source to terminals 3 and 4.
Step 3: Set DIP switches to match available control
signal.
Step 4: Connect switched OFF control signal to
terminals 1 and 2. Observe polarity. Note
that the return, or signal ground, must be
connected to terminal 2.
Step 5: Switch Power and control signal ON.

VALVE SETTING

The Exa valve has two (2) buttons and an LED for the

user interface. The buttons are used to set the valve for

high and low re settings (see gure 5).

1. High Fire Setting (LED will be solid red)

2. Low Fire Setting (LED will be blinking red)

3. Operating Mode (LED will be OFF)

HIGH FIRE SETTING - BUTTON #1

To enter the high re setting mode, press and hold but­ton #1 until the LED lights solid red. Release. The valve
is now in the high re setting mode. Buttons #1 and #2
are used to set desired high re setting.

Press or hold button #1 to increase gas ow. Each but-

ton press equates to the minimum available step size

and will increase ow slowly. Holding the button down

auto steps and eliminates the need to continuously
press the button. Use this feature to rapidly increase

the ow.

Press or hold button #2 to decrease gas ow. Each but-

ton press equates to the minimum available step size

and will decrease ow slowly. Holding the button down

auto steps and eliminates the need to continuously
press the button. Use this feature to rapidly decrease

the ow.

To save the high re setting, simultaneously hold but­tons #1 and #2 until the LED turns off

NOTE: Controls left in the high re setting mode will de-

fault to the current setting after 5 minutes of inactivity.

Button 1

Figure 5: EXA Valve Adjustment Controls

Button 2

LED Display

LOW FIRE SETTING - BUTTON #2

To enter into the low re setting mode, press and hold
button #2 until the LED light blinks red. Release. The
valve is now in the low re setting mode. Buttons #1
and #2 are used to set the desired low re setting.

Press or hold button #2 to decrease gas ow. Each but-

ton press equates to the minimum available step size

and will decrease ow slowly. Holding the button down

auto steps and eliminates the need to continuously
press the button. Use this feature to rapidly decrease

the ow.

Press or hold button #1 to increase gas ow. Each but-

ton press equates to the minimum available step size

and will increase ow slowly. Holding the button down

auto steps and eliminates the need to continuously
press the button. Use this feature to rapidly increase

the ow.

To save the low re setting, simultaneously hold buttons
#1 and #2 until the blinking LED turns off.

NOTE: Controls left in the low re setting mode will de-

fault to the current setting after 5 minutes of inactivity.

Maxitrol Company
23555 Telegraph Rd., P.O. Box 2230
Southeld, MI 48037-2230 U.S.A.

EXA_MS_EN_07.2009

www.maxitrol.com

© 2009 Maxitrol Company,

All Rights Reserved.

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