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
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
1
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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