Exhausto EBC 12 Installation instructions

3001435 05.12 Installation & Operating Manual
USA
CAN
EBC 12
Modulating Fan Control
VENTING DESIGN SOLUTIONS
ENERVEX Inc.
1685 Bluegrass Lakes Pkwy.
Alpharetta, GA 30004
P: 770.587.3238
F: 770.587.4731
T: 800.255.2923
[email protected]
www.enervex.com
Job Name:
Installer:
Installation Date:
Product Information
Mechanical Installation
Electrical Installation
Start Up and Conguration
Maintenance and Troubleshooting
.............................. Chapters 1+2
......................... Chapter 3
............................. Chapter 4
.................. Chapter 5
...... Chapter 6
READ AND SAVE THESE INSTRUCTIONS!
VOLKO SUPPLY
800-685-8263

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3001435 05.12
How to use this manual
This installation manual does not contain any system design
documentation. System design documentation is available from any
authorized EXHAUSTO representative.
Accessories, fans and variable frequency drives are not covered by
this manual. Please refer to these component’s individual manuals.
1. Product Information
1.1 Function ...............................................................................................3
1.2 Shipping ...............................................................................................3
1.3 Warranty...............................................................................................3
2. Specications
2.1 Dimensions & Capacities......................................................................4
3. Mechanical Installation
3.1 Location................................................................................................5
3.2 Mounting of Control .............................................................................5
3.3 Mounting of Transducer .......................................................................6
3.4 Mounting of Stack Probe......................................................................6
3.5 Connecting Transducer to Stack Probe ...............................................6
4. Electrical Installation
4.1 General ................................................................................................7
4.2 Continuous Chimney Fan Operation (120V only) ................................8
4.3 Intermittent Chimney Fan Operation ....................................................9
4.4 Connection of a Variable Frequency Drive......................................... 11
4.5 Integrated PDS with External PDS Backup........................................12
5. StartupandConguration
5.1 General ..............................................................................................13
5.2 Setting Operating Pressure................................................................14
6. MaintenanceandTroubleshooting
...........................................................................................................15
TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK OR INJURY TO PERSONS,
OBSERVE THE FOLLOWING:
Caution: Indicates an imminent hazardous situation
which, if not avoided, may result in personal injury or
property damage.
SymbolLegend:
The following terms are used throughout this manual to bring attention
to the presence of potential hazards or to important information
concerning the product.
Danger: Indicates an imminent hazardous situation
which, if not avoided, will result in death, serious injury or
substantial property damage.
1. Use this unit in the manner intended by the manufacturer. If
you have questions, contact the manufacturer at the address or
telephone number listed on the front of the manual.
2. Before servicing or cleaning the unit, switch off at service panel
and lock service panel to prevent power from being switched on
accidentally.
3. Installationworkandelectricalwiringmustbedonebyaqualied
person(s) in accordance with applicable codes and standards.
4. Follow the appliance manufacturer’s guidelines and safety
standards such as those published by the National Fire Protection
Association (NFPA), and the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE), and the
local code authorities.
5. This unit must be grounded.

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1. Product Information
1.1 Function
Use The EXHAUSTO EBC 12 is a Modulating Fan Control used with single appliances to monitor
and maintain a constant draft or pressure in a chimney or duct. This is achieved by modulating the speed
of a chimney fan or ventilator. The EBC 12 can be used with EXHAUSTO Models RSV, BESF and BESB.
It can control the fan speed directly or via a Variable Frequency Drive (VFD).
The EBC 12 is typically used to control the draft in systems requiring a single boiler or water heater.
Function The control monitors the draft in a chimney system via connection to a pressure sensor (XTP2)
attached to the chimney, and maintains it by modulating the fan speed. The control has an integrated safety
system that assures the heating appliance is shut down in case of fan failure or control failure.
The use of the EBC 12 is not restricted to any type of fuel or type of heating appliance. When the
appliance thermostat closes and calls for heat, the control will send maximum voltage to the chimney fan or
 VFD.Whenthenecessarydraftisachieved,thecontrolwillallowboilerringandregulatethevoltage 
to the fan or VFD, so the required draft is maintained (the value can be viewed in the display). In
 caseofinsufcientdraft,thecontrolwillassuretheburnerwillbeshutdownafter12seconds.When 
 theappliancehassatisedthethermostatandshutsdown,thecontrolwillturnoffthefan.
The control can be used in one of two ways:
 •Interlocked with the appliance to pre-purge the chimney prior to boiler start-up and post-purge
the chimney for 3 minutes after boiler shut down.
or
 •Settorunthefancontinuously.
Other Functions The control has an integrated safety function. It can be operated with either a manual reset function
(reset button) or an automatic reset function. All terminal connections are monitored by LED’s for easy
service and troubleshooting.
Listings EXHAUSTO’s EBC 12 is ETL listed to the Standard for Industrial Control Equipment, UL Standard 508,
17th Ed. and CSA C22.2 No. 14-95 as well as UL378, Standard for Draft Equipment. It is also tested and
listed as a part of an ETL listed CASV System (ETL Report 045099A) and an ETL listed MDVS System
(ETL Report J99*18091-004)
1.2Shipping
Standardpackinglist
The EBC 12 contains the following:
 •EBC12controlunit
 •Pressuretransducer(XTP2)
 •Siliconetubing
 •Stackprobe
 •Jumpers
If other components are shipped, these will appear as separate items on the shipment packing list.
1.3 Warranty
Complete warranty conditions are available from ENERVEX, Inc.

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2.1 Dimensions & Capacities
Symbols:
Fig. 1-A Fuse holder
Fig. 1-B Alarm-red LED
Fig. 1-C Reset button
Fig. 1-D Set point button
Fig. 1-E Potentiometer for draft setting
Fig. 1-F Display
Fig. 1-G LEDs (yellow) showing
increasing/decreasing speed
Fig. 1-H Dipswitch block
Fig. 1-I LEDs (green) showing ON/OFF
status
I
A
D
C
E
FBGH
RD10103
+24V +24V COM-0 COM +24V-+ 0-10V- +0-10V
__
>
Fig.1
In. WC / Pa
Setpoint Reset Alarm
EBC 12 Control
Power supply V 1x120VAC
Amperage A 6.3
Operating temperature °F/°C -4 to 122 / -20 to 50
Range of operation inWC/Pa 0-0.6 / 0-150
Tolerance inWC/Pa 0.01 / 3 +/-10%
Control signal mA max. 10
Control relay Max. 120 VAC/8A
Output VAC 10-120
VDC 0-10
Dimensions A in/mm 6.9 / 175
B in/mm 8.1 / 205
C in/mm 4.0 / 102
Weight lbs/kg 3.0 / 1.5
EMC standard Emission EN50 081-1
Immunity EN50 082-2
XTP2 Sensor
Power supply VDC 12-36
Amperage mA <20
Output VDC 0-10
Operating temperature °F/°C 0 to 160 / -18 to 71
Accuracy +/- 0.08%
Dimensions D in/mm 3.70 / 94
E in/mm 5.12 / 130
F in/mm 6.18 / 157
G in/mm 3.13 / 80
Weight lbs/kg .6 / .3
Chimney Probe
Dimensions H in/mm 4.25 / 108
I in/mm 3.50 / 89
2.Specications

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3. Mechanical Installation
3.1 Location
The control and the transducer must be installed inside, preferably in the boiler room. The control does not need to
be installed in an enclosure. Fig. 2 shows how the components are connected.
Thetransducercannotbemountedinsideanairtightenclosure.Itusestheboilerroom
pressure/atmospheric pressure as reference pressure.
3.2MountingofControl
The control can be mounted directly on a wall or similar. Remove the clear cover. The mounting holes are located
under the plastic screws that hold the cover in place (Fig. 3).
The distance between the control and the transducer should not exceed three hundred (300) feet.
Fig.3
Fig.2
EBC 12
XTP2 Sensor
Max. 6 feetMax. 300 feet
Fig.2a

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3.3MountingofTransducer
Attention must be paid to the location of the transducer. The transducer can be mounted in any orientation but prefer
ably with the pressure ports facing down.
The transducer should be mounted within six (6) feet of the stack probe.
3.4MountingofStackProbe
The probe (Fig. 2a on page 5) is inserted into the chimney or vent at the point where the draft should be kept constant.
This could be at the appliance outlet, in the vent or similar.
 ReferringtoFig.2,makesurethetipofthetubeisushwiththeinnerwallofthestack.Insertingittoofarmayaffect
the reading and thereby the operation.
3.5ConnectingTransducertoStackProbe
The transducer is connected to the stack probe via a silicone tube. Make sure that the tube is connected to the proper
transducer port as shown in Fig. 5.
Fig.4
Fig.5
+
-
Front

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+24V +24V COM-0 COM +24V-+ 0-10V- +0-10V
__
>
Terminal Use
1 Power Supply-L1
2 Power Supply-N
3 Power Supply-Ground
4-5 Voltage Input from Appliance thermostat
Optocoupler (-) (10-120VAC/CDC
6-7 Voltage Input from Appliance thermostat
Optocoupler (+) (10-120VAC/DC)
8 24VDC power supply to dry set of
contacts (appliance thermostat)
9 0VDC power supply to dry set of
contacts (appliance thermostat)
14 Burner relay contact-Common
(max. 120 VAC, 8 Amps.)
15 Burner relay contact-Normally Open
(max. 120VAC, 8 Amps.)
16 PDS-C (Common) Proven Draft Switch
Terminal Use
17 PDS-NC (Normally Closed) Proven
Draft Switch
18 PDS-NO(NormallyOpen)Proven
Draft Switch
19 Chimney Fan-L1
20 Chimney Fan-N (regulating)
21 Chimney Fan-Ground
22 XTP-0VDC Power Supply
(transducer)
23 XTP-24VDC Power Supply
(transducer)
24 XTP-0-10VDC Return Signal
(transducer)
25 Control signal 0VDC
26 Control signal 0-10VDC
Fig.6
4. Electrical Installation
4.1 General
Danger:Turnoffelectricalpowerbeforeservicing.Contactwithliveelectriccomponentscan
cause shock or death.
 EBC12isdesignedfor1x120VACpowersupplyonly.Fanoutputisregulatingontheneutralside
and cannot be connected to other circuits.
The control can be used in two ways:
 • Connectedsothefanrunscontinuouslyindependentofapplianceoperation(seeparagraph4.2).
 • Interlockedwithanappliancesotheapplianceoperationindirectlycontrolsthefanoperation(see 
paragraph 4.3).
In both cases the control will still monitor and maintain a constant draft.
There are two types of safety systems available:
 • IntegratedProvenDraftSwitch(standard).
 • IntegratedProvenDraftSwitchwithExternalProvenDraftSwitch(accessory)backup(seeparagraph 
4.4).
TheterminalsareconnectedasshownonFig.6:

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3001435 05.12
EBC 12 Control Board
COMVout Vin
4.2 Continuous Chimney Fan Operation
Fig. 7 shows how to connect a chimney fan to the EBC 12 if continuous operation is needed:
 • Connectthepowersupplytoterminals1,2and3.
 • Jumpterminals5and9.
 • Jumpterminals6and8.
 • Connectiontotheappliance(s):
- Connect the start signal from the burner to terminals 14 and 15.
 • Toconnectthechimneyfan:
- If using a 1x120V chimney fan, connect it to terminals 19, 20 and 21. Refer to the fan’s Installation
Manual.
- If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11.
DO NOT connect the fan directly to the MEC 18 control.
 • ConnecttheXTP2transducertoterminals22,23and24.
Fig.7

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Sample Wiring Diagram - Burner Interlock
Connection to 120V Fan - Internittent Operation
EBC 12 Control Board
COMVout Vin
4.3IntermittentChimneyFanOperation(120V)
The control can be interlocked with an appliance in two ways:
It can be interlocked directly with an appliance control, or with a dry set of contacts.
Interlock with Burner
Figure 8 shows how an appliance control signal (10-120V AC/DC) is connected to the EBC 12:
 • Connectthepowersupplytoterminals1,2and3.
 • Connectiontotheappliance:
- Connect the boiler start signal to terminal 4.
- Jump terminals 5 and 14.
- The start signal to the burner is now activated by terminal 15.
- Connect Neutral to terminal 6.
 • Toconnectthechimneyfan:
- If using a 1x120V chimney fan, connect it to terminals 19, 20 and 21. Refer to the fan’s Installation
Manual.
- If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11.
DO NOT connect the fan directly to the MEC 18 control.
 • TheXTP2transducerisconnectedtoterminals22,23and24.
Fig.8

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Sample Wiring Diagram - Dry Contact Relay
Connection to 120V Fan
EBC 12 Control Board
COMVout Vin
Interlock with dry set of contacts
Figure 9 shows how a dry set of contacts is connected to the EBC 12:
 • Connectthepowersupplytoterminals1,2and3.
 • Connectiontotheappliance:
- Connect the dry set of contacts to terminals 6 and 8.
- Jump terminals 4 and 9.
- Connect the start signal to the burner to terminals 14 and 15.
 • Toconnectthechimneyfan:
- If using a 1x120V chimney fan, connect it to terminals 19, 20 and 21. Refer to the fan’s Installation
Manual.
- If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11.
DO NOT connect the fan directly to the MEC 18 control.
 • ConnecttheXTP2transducertoterminals22,23and24.
Fig.9

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4.4 Connection to a Variable Frequency Drive
To connect the 3-phase fan and variable frequency drive (VFD), connect the VFD to terminals 25 and 26 of the EBC 12.
DO NOT connect the fan directly to the control.
Wire the ABB ACS320 series variable frequency drive according to Fig. 10.
Wire the VLT Micro Drive variable frequency drive according to Fig. 11.
POWER SUPPLY
200-240/3/60
OR
400-480/3/60
#26 #25
TO EBC 12
CONTROL
TO EXHAUST FAN
TO EBC 12
CONTROL
29
Fig.10
Fig.11

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3001435 05.12
EBC 12 Control Board
4.5IntegratedProvenDraftSwitchwithExternalProvenDraftSwitchBackup
Fig. 12 shows how to connect a external Proven Draft Switch (PDS) to the EBC 12. The external PDS is a
backup to the integrated PDS and bothmustbesatisedbysufcientdrafttoreleasetheappliance:
 • Removethefactoryinstalledjumperoverterminals16and18.
 • Connecttheswitchtoterminals16,17and18asshownonFig.11.
Fig.12

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  5.StartupandConguration
5.1 General
Prior to start up please review the paragraph below titled Dipswitch settings.
 Dipswitchsettings
Prior to starting the system, check to see if the dipswitch settings are as required:
 •Defaultfactorysetting:AllOFF
 • Ifthefactorysettingmustbechanged,theblackcoverplatemustberemovedtogainaccesstothe 
dipswitches (see Fig 12-A):
1. Remove the potentiometer dial.
  2. Removethe(4)atheadscrewsandliftthetopplateofftheboard.
3. Change the dipswitch settings.
Fig.12
*) Always OFF if the Proven Draft Switch (PDS) is not connected.
Dipswitch Name OFF ON
1 MANUAL
RESET
Automatic reset
at power failure or
insufcientdraft.
Manual reset at
power failure or
insufcientdraft.
2 POST
PURGE
No post-purge. 3 minutes of post
purge.
3*) PDS CHECK No monitoring to see
if the PDS was in NC
position prior to start.
The PDS must be in
NC prior to start.

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3001435 05.12
Fig.14
EXHAUSTO
CHIMNEY DRAFT TECHNOLOGY
EBC 12
+24V +24V COM-0 COM +24V-+ 0-10V- +0-10V
__
>
Fig.13
5.2SettingOperatingPressure
The pressure setting of the EBC 12 must be adjusted to assure proper draft for the heating system. The display (Fig.
13-C) has two functions. It can show what the draft set-point is, and it can show what the actual draft is.
The default mode shows the actual draft. To change the mode, the set-point button must be pressed
continuously.
To adjust the draft set-point follow this procedure:
Temporary adjustment of the draft:
1. Press the set-point button continuously with a pen or screwdriver (Fig. 13-A). The pressure setting will
now show on the display. Use the potentiometer (Fig. 13-B) to set the required draft in WC/Pa on the
display (Fig. 13-C). Release the set-point button; the actual draft will now show up on the display.
2. Start the heating system and wait until the thermostat (Fig. 14-A) closes and the draft has stabilized
(none of the yellow diodes are lit).
Final adjustment of the draft:
3. Check the draft at the appliance outlets and make any necessary adjustment by following the procedure
described under step 1 above.
4. Check that the safety system disconnects the appliance (Fig. 14-B). An error can be simulated by
disconnecting the tube (-) to the transducer (XTP).
 5. Checkthestartfunctionafterthenaldraftsettingadjustmentshavebeenmade.

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  6.MaintenanceandTroubleshooting
Some appliances require a certain startup procedure after a shutdown. Follow this procedure prior
topressingtheRESETbutton(Fig.15-C).
Fig.15
Observation Problem Solution
NolightintheSUPPLYdiode(Fig15-A) Blown fuse or interrupted power supply 1) Check the fuse (Fig. 15-B) and the fan power.
2) Check the power supply.
Constantlightin“IncreasingSpeed”diode
(Fig15-E)
System fault 1) Check that the probe is connected to the “-” port on the
XTP2 transducer.
2) Check that the probe is not clogged.
CAUTION: Do not blow into the XTP2 transducer.
3) Check that the fan is running.
4) Set-point is too high for the fan capacity. Check/reduce
setting.
5) Check the entire system’s adjustment, including any
balancingbafesinstalled.
6) Check breaching and common vent for leakages.
7) Check the power supply to the XTP2.
Constantlightin“DecreasingSpeed”diode
(Fig15-D)
System fault 1) The natural chimney draft prevents the system from
reaching the set-point. Check the adjustment. If necessary,
installabalancingbafeorotherresistanceinthechimney.
2) The probe may be in a bad location. Move it to another
position closer to the appliance.
ConstantlightinALARMdiode(Fig.15-H), but
no light in FAN diode (Fig. 15-G) (Can only occur
when MANUAL RESET is ON (Fig. 15-F)
Power outage Press the RESET button (Fig. 15-C) for (1) second — see
warning.
ConstantlightinAlarmdiode
and light in fan diode (Fig. 15-H)
Insufcientdraft 1) Press the RESET button (Fig. 15-C) — see warning.
2) Check that the service disconnect switch is working
properly.
3) Check the connectors, chimney and fan for blocking
restrictions.
FlashingALARMdiode(Fig.15-H)
Can only occur when PDS CHECK is ON (Fig.
15-F)
Error in safety system (PDS) 1) Check that a PDS is installed.
2) Check the setting of the safety system (the natural draft
can prevent close/alternatively the PDS CHECK dipswitch can
be moved to its OFF position.
3) Check the connection to the PDS and the PDS itself.
TheEBC12doesnotregulateandthefanis
runningatfullspeed
The neutral connection is shared with other
devices.
1) Check the amp-draw on terminal Nreg. If it is “0”, the
neutral connection to the fan is being shared.

ENERVEX Inc.
1685 Bluegrass Lakes Pkwy.
Alpharetta, GA 30004
P: 770.587.3238
F: 770.587.4731
T: 800.255.2923
[email protected]
www.enervex.com
VENTING DESIGN SOLUTIONS
3001435 05.12