Exodraft EBC24 Installation And Operation Manual

3120065 EBC24 US 20170329

EBC24 modulating fan control

Installation and operation manual

READ AND SAVE THESE INSTRUCTIONS!

Product information Chapters 1 + 2

Mechanical installation Chapter 3

Electrical installation Chapter 4

Start up and conguration Chapter 5

Maintenance and troubleshooting Chapter 6

Job name: _____________________________________

Installer: ______________________________________

Installation date: _______________________________

USA

CAN

Distributor contact information:

ENERVEX Inc. • T: 800.255.2923
[e-mail] • www.enervex.com

Contents

2

3120065 EBC24 US 20170329

1. Product information

1.1 Function ........................................................................3

1.2 Shipping ........................................................................3

1.3 Warranty ........................................................................3

2. Specications

2.1 Dimensions and 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 ..............................................8

4.3 Intermittent chimney fan operation (120 V) ......................................9

4.4 Connection to a variable frequency drive .......................................11

4.5 Integrated Proven Draft Switch with external Proven Draft Switch backup ........12

5. Startup and conguration

5.1 General ........................................................................13

5.5 Basic control set-up ............................................................13

5.6 Detailed control programming .................................................14

6. Settings and troubleshooting

6.1 Troubleshooting ...............................................................15

6.2 Settings ........................................................................16

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.

CAUTION

Indicates an imminent hazardous situation which, if
not avoided, may result in personal injury or property
damage.

TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK OR INJURY TO PERSONS,
OBSERVE THE FOLLOWING:

1. Use this unit in the manner intended by the manufacturer. If
you have questions, contact the manufacturer’s distributor at the
address or telephone number listed on the front of the manual.

2. Before servicing or cleaning the unit, switch o 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.

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.

How to use this manual

This installation manual does not contain any system design
documentation. System design documentation is available from
ENERVEX.

4. Follow the appliance manufacturer’s guidelines and safety
standards such as those published by the National Fire Protection

Accessories and variable frequency drives are not covered by this
manual. Please refer to these component’s individual manuals.

3120065 EBC24 US 20170329

1. Product information

1.1 Function

Use The exodraft EBC24 is a Modulating Fan Control used with up to two 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 EBC24 can be used with models RSV, BESF and BESB. It can control
the fan speed directly or via a Variable Frequency Drive (VFD).
The EBC24 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 (XTP) at-

tached 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 EBC24 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 insucient draft, the control will assure the burner will be shut down after 15 seconds (Can
be adjusted). When the appliance has satised the thermostat and shuts down, the control will turn
o 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 a variable time after boiler shut down.

• Set to run the fan continuously.

3

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 EBC24 is UL listed to the Standard for Industrial Control Equipment, UL60947-4-1 and CSA C22.2 No.

14-10.

1.2 Shipping

The EBC24 standard packing list

y EBC24 control unit

y Pressure transducer (XTP)

y Silicone tubing

y Stack probe

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.

B

A

C

D

F

G

E

H

1.45

2.90 3.33

1.89

1.32

.37

POWER

HI LO

SPAN

ZERO

.56

3120065 EBC24 US 20170329

2. Specications

4

2.1 Dimensions and capacities

exodraft EBC24 Control

Power supply V 1x120 VAC / 60 Hz

Fuse size Control/Motor A 0.4T/6.3T /250V(JDYX2/8)

Max. Motor load kW/hp 0.35/0.5

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%

+24V Supply mA 100 Max.

Control signal VFD VDC/mA 0-10 / Max. 10

Control and Alarm relay Max 120 VAC/4A AC1 - 24 VDC/2A DC1

Boiler Inputs 10-48 VDC / 10-132 VAC

VFD Relay Max 120 VAC/2A AC1 - 24VDC/2A DC1

Output TRIAC VAC 10-120

Dimensions AxBxC 6.9/175 x 6.9/175 x 4.33/110 in/mm

Weight lbs/kg 3.0/1.5

EMC standard UL 60947

IP-Rating NEMA 3R

Ashcroft XTP-sensor

Power supply VDC 14-36

Amperage mA 6

Output VDC 0-10

Operating temperature °F/°C 0 to 160/-17 to 70

Tolerance inWC/Pa 0.01/3+/-10%

Weight lbs/kg .9/.4

Chimney Probe

Dimensions H in/mm 4.25/108

I in/mm 3.50/89

EBC24

Fig. 1

Symbols

Fig. 1-A Fuse holder Exhaust Fan
Fig. 1-B Fuse holder Control
Fig. 1-C Display 128 x 64 pixels
Fig. 1-D USB port
Fig. 1-E Up button
Fig. 1-F Select / Conrm button
Fig. 1-G Down button
Fig. 1-H Reset / Back button
Fig. 1-I LEDs (green) showing ON/OFF status

3120065 EBC24 US 20170329

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.

EBC24 Control

Fig. 2aFig. 2

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

5

The control can be mounted directly on a wall or similar.

y Remove the clear cover.

y The mounting holes are located under the plastic screws that hold the cover in place (Fig. 3).

y The distance between the control and the transducer should not exceed three hundred (300) feet.

Fig. 3

3120065 EBC24 US 20170329

3.3 Mounting of transducer

Attention must be paid to the position and location of the transducer. Fig. 5 shows the required position. Failure to follow

6

this instruction may result in an inoperable system.

y An Ashcroft XTP-sensor used for sensing draft should be mounted within six (6) feet of the stack probe.

y An Ashcroft XTP-sensor used for sensing room pressure should be mounted within fty (50) feet of the Outdoor

Pressure Probe.

Fig. 4

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 aect 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. 5