Edge EDGE-1830 User manual

Original Service Manual CD-941-525-1
EDGE-1830, EDGE-2440, EDGE-3240, EDGE-2460
EDGE-3260, EDGE-3860, EDGE-4460, EDGE-3270
GENERATION 2
ORIGINAL SERVICE MANUAL
WORLD, CE
RETAIN THIS MANUAL FOR FUTURE REFERENCE
TO BE SERVICED BY AUTHORIZED PERSONS ONLY
MF&B RESTAURANT SYSTEMS, INC.
119 ICMI ROAD, DUNBAR, PA 15431, USA
TF: 1 (888) 480-EDGE
P: 1 [phone] F: 1 [phone]
Email: [e-mail]
WWW.EDGEOVENS.COM

EDGE-1830 / EDGE-2440 / EDGE-3240 / EDGE-2460 / EDGE-3260 / EDGE-3860 / EDGE-4460 / EDGE-3270
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LEGAL INFORMATION
Copyright 2021 MF&B Restaurant System, Inc. All rights are reserved. To support the intended
use of the product described in this publication, the purchaser of the product is permitted to
copy this publication, for internal distribution only, from the media provided by MF&B
Restaurant Systems, Inc. No other use, reproduction, or distribution of the publication, or any
part of it, is permitted without written permission from MF&B Restaurant Systems, Inc. All rights
are reserved.
Caution MF&B Restaurant Systems, Inc. assumes no responsibility for any injury, or for any
illegal or incorrect use of the product, that may result from failure to use this product in
accordance with the instructions, cautions, warnings, or indications for use published in this
manual.
Software incorporated in this product is copyright protected by MF&B Restaurant Systems or
its vendors. All rights are reserved. The software is protected by United States of America
copyright laws and international treaty provisions applicable worldwide. Under such laws, the
licensee is entitled to use the copy of the software incorporated within this instrument as
intended in the operation of the product in which it is embedded. The software may not be
copied, decompiled, reverse-engineered, disassembled or otherwise reduced to human-
perceivable form. This is not a sale of the software or any copy of the software; all right, title
and ownership of the software remains with MF&B Restaurant Systems, Inc. or its vendors.
Modifications to the EDGE Oven, not expressly approved by MF&B Restaurant Systems, Inc.
may void the purchaser’s authority to operate the equipment.
For information about any EDGE Ovens product, contact MF&B Restaurant Systems, Inc.,
Technical Support or visit www.edgeovens.com.
ALL WARRANTY SERVICE MUST BE PRE-AUTHORIZED BY MF&B OR AN APPROVED
REPRESENTATIVE WITHIN THE DESTINATION REGION. ANY UNAUTHORIZED SYSTEM
DIAGNOSTIC, SERVICE FEES, TRAVEL FEES, PART AND LABOR WILL BE THE
RESPONSIBILITY OF THE APPLIANCE OWNER/OPERATOR. ADDITIONALLY, UNAUTHORIZED
SERVICE WILL VOID ALL EXPRESSED WARRANTIES ON THE PRODUCT. PLEASE CALL FOR
ASSISTANCE AND CONSULT THE WARRANTY POLICY WITHIN THE INSTALLATION AND
OPERATION INSTRUCTIONS FOR COMPLETE DETAILS.
MF&B Restaurant Systems, Inc.
119 ICMI Road
Dunbar, PA 15431-2309, USA
Tel: [phone]
Fax: [phone]

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Table of Contents
1. SAFETY INFORMATION ________________________________________________________________ 1
❖Purpose of this manual _____________________________________________________________________ 1
❖Service policy _____________________________________________________________________________ 1
❖Symbols _________________________________________________________________________________ 2
❖General Warnings _________________________________________________________________________ 2
❖Warnings related to the operating environment_________________________________________________ 2
❖Warnings related to electric shock ____________________________________________________________ 2
❖Warnings related to hot surfaces _____________________________________________________________ 2
❖General Cautions __________________________________________________________________________ 2
❖Electrostatic discharge (ESD)_________________________________________________________________ 3
2. General Operation (Firmware MC:25, UI:29) _______________________________________________ 4
❖Menu System Overview ____________________________________________________________________ 4
❖Basic Operation ___________________________________________________________________________ 4
❖Advanced Operation _______________________________________________________________________ 5
❖Service Operation _________________________________________________________________________ 9
3. Tools Required for Service _____________________________________________________________ 10
❖Instruments _____________________________________________________________________________ 10
❖Tools___________________________________________________________________________________ 10
❖Supplies ________________________________________________________________________________ 10
4. Sequence of operations _______________________________________________________________ 11
❖Electrical supply__________________________________________________________________________ 11
❖MAIN POWER switch______________________________________________________________________ 11
❖Touch POWER Icon _______________________________________________________________________ 11
❖Main Fan is Powered______________________________________________________________________ 11
❖iHeat is Active, begins system test ___________________________________________________________ 12
❖iHeat control ignition/run cycle (1)___________________________________________________________ 12
❖Ignition Module Operation _________________________________________________________________ 12
❖iHeat control ignition/run cycle (2)___________________________________________________________ 12
❖High limit prevention **STAGE 2 OTP ________________________________________________________ 12
❖Cool down ______________________________________________________________________________ 12
5. System setup _______________________________________________________________________ 13
❖Orifice__________________________________________________________________________________ 13
❖Air shutter ______________________________________________________________________________ 13
❖Induction blower calibration___________________________________________Error! Bookmark not defined.

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❖Modulating gas valve ______________________________________________________________________ 14
➢Maximum Inlet Supply Pressure _______________________________________________ Error! Bookmark not defined.
➢Minimum Inlet Supply Pressure _______________________________________________ Error! Bookmark not defined.
➢High-Pressure Setting ______________________________________________________________________________ 15
➢Low-Pressure Setting_______________________________________________________________________________ 15
❖Circulation fan speed (VFD Adjustment) _______________________________________________________ 16
6. Gas conversion______________________________________________________________________ 17
❖Changing the orifice _______________________________________________________________________ 17
❖Final adjustments _________________________________________________________________________ 17
7. Troubleshooting_____________________________________________________________________ 18
❖Basics First_______________________________________________________________________________ 18
❖iHeat System_____________________________________________________________________________ 19
➢Model configuration _______________________________________________________________________________ 19
➢Service DIP switch settings __________________________________________________________________________ 20
❖Complete iHeat LEDs Chart _________________________________________________________________ 21
❖G2 Control System Messages________________________________________________________________ 24
❖Troubleshooting flowcharts _________________________________________________________________ 27
➢Ignition Module, Diagnostic LEDs _____________________________________________________________________ 27
➢iHeat Diagnostic LEDs, the “short list” _________________________________________________________________ 28
➢Control System, Diagnostic Messages (1 of 2) ___________________________________________________________ 29
➢Control System, Diagnostic Messages (2 of 2) ___________________________________________________________ 30
8. Part failure verification _______________________________________________________________ 31
❖Controls and assemblies____________________________________________________________________ 31
➢Switches _________________________________________________________________________________________ 31
➢Fuses / Fuse holder ________________________________________________________________________________ 31
➢iHeat Burner Controller _____________________________________________________________________________ 31
➢Cooling Fan_______________________________________________________________________________________ 32
➢Main Valve _______________________________________________________________________________________ 32
➢Modulating valve __________________________________________________________________________________ 33
➢Main Valve Rectifying Cable _________________________________________________________________________ 34
➢Optical Flame Detector _____________________________________________________________________________ 34
➢Ignition Electrodes / Flame Rod ______________________________________________________________________ 34
➢Burner Blower Motor (Induction) _____________________________________________________________________ 35
➢Transformer ______________________________________________________________________________________ 35
➢Conveyor Motor___________________________________________________________________________________ 35
➢Air Switch (3PH, 3/4HP Main Motor) __________________________________________________________________ 35
➢Thermocouple ____________________________________________________________________________________ 35
➢Variable Frequency Drive ___________________________________________________________________________ 36
➢Main Fan, Motor (3PH, 3/4HP) _______________________________________________________________________ 36
9. Wiring Diagram _____________________________________________________________________ 37
10. Type-J thermocouple chart __________________________________________________________ 38
❖Thermocouple Worksheet __________________________________________________________________ 39
11. Part List__________________________________________________________________________ 40
12. Revision history ___________________________________________________________________ 41

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1. SAFETY INFORMATION
All service technicians of the EDGE Oven must read this summary and all warnings and cautions in the
manual.
Any internal part(s) replacement or assembly and reassembly must be performed by qualified service
personnel with a good understanding of mechanical, gas and electrical components. If difficulties arise
in locating a qualified service person, please contact your EDGE oven distributor or MF&B for
assistance in locating qualified personnel to assist you.
❖Purpose of this manual
The purpose of this manual is to assist with common troubleshooting scenarios and provide a quick
reference guide for service providers. The information within this document is not intended for
customers or the inexperienced.
❖Service policy
All repairs on products within the warrantyperiod must be PRE-AUTHORIZED by MF&B Restaurant
Systems, Inc. or an approved representative within the destinated region. Unauthorized repairs will
not be reimbursed. Modifications will void the warranty. Consult the WARRANTY POLICY within
the Installation and Operation Instructions for complete details.
If the product fails to function correctly—or if you need assistance, service, or spare parts—contact
MF&B Restaurant Systems, Inc.
Before contacting MF&B Restaurant Systems,Inc., try to duplicate the problem, and check electrical
outlets and gas supply lines to ensure that they are not causing the problem. When calling, please
be prepared to provide:
• Supplier, model number, and serial number of your product.
• Complete description of the problem.
• Complete name, address and phone number of your facility.
• For out-of-warranty repairs or spare parts orders, a purchase order (or credit card) number.
• For parts orders, the required spare or replacement part numbers.
If your product requires warranty, or non-warranty repair service, please call MF&B Restaurant
Systems, Inc. first. A representative will assist you troubleshooting the problem and will make every
effort to solve it over the phone, avoiding potential unnecessary expenses and downtime.
In case a service call cannot be avoided, the representative will record all necessary
information and may attempt to coordinate the delivery of repair parts with a servicer in your area.
Repair parts which are not used and/or replaced parts should be returned to MF&B Restaurant
Systems, Inc.
To aid in quick service and to accommodate the servicers needs, ensure the product is accessible
and that there is ample clearance for the product to be disconnected and rotated as needed.
Due to the size of the product and the size of the product parts, a servicer may require assistance
with some handling or maneuvering or this product or product parts. Please use care and correct
lifting techniques.

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❖Symbols
WARNING Indicates conditions that could lead to injury or death.
CAUTION Indicates conditions that could damage equipment or correctly.
CAUTION Indicates conditions that may result in a burn injury.
❖General Warnings
Warnings indicate conditions or practices that could lead to injury or death.
❖Warnings related to the operating environment
WARNING To avoid a possible explosion, do not service the product in an atmosphere where
explosive gases or fuel sources are present and/or leaking. Verify all gas valves are in the OFF
position and that enough ventilation is present to evacuate any unburnt gases.
❖Warnings related to electric shock
WARNING Electricity can seriously injure or kill. Disconnect the power cord for the electrical
outlet or lock out the service disconnect before servicing this equipment. Always ensure an
earth ground is correctly connected to the equipment. When troubleshooting live electrical
circuits, use care and best practices to ensure an electrical pathway is not completed through
the body.
❖Warnings related to hot surfaces
WARNING Seriously injures may occur from contact to hot surfaces. Allow adequate cooling
time of the appliance prior to service or maintenance. In situations where handling of the
appliance or its parts in unavoidable, use thermal protective gloves to protect the hands, wear
long shirts and pants to protect arms and legs. Do not attempt to “test” the temperature of
surfaces by touch.
❖General Cautions
Cautions indicate conditions or practices that could damage the equipment or other correctly.
CAUTION To prevent possible damage, do not use sharp or hard objects on interface screen,
use only fingertips.
CAUTION Mobile RF communications equipment and high frequency LED lighting may affect
the performance of this equipment as dictated by FCC regulations.
CAUTION The power cord must be disconnected from the AC power before cleaning,
maintaining, servicing, or transporting.
CAUTION The gas supply line must be disconnected from the oven before cleaning,
maintaining, servicing, or transporting.
CAUTION There are NO parts of the oven that are designed to withstand impacts. Damage
will result.

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❖Electrostatic discharge (ESD)
CAUTION Electrostatic discharge (ESD) can damage or destroy electronic components.
Handle static-sensitive components using safe practices.
CAUTION Assume that all electrical and electronic components of the appliance are
static-sensitive.
Electrostatic discharge is a sudden current flowing from a charged object to another objector to ground.
Electrostatic charges can accumulate on common items such as foam drinking cups, cellophane tape,
synthetic clothing, untreated foam packaging material, and untreated plastic bags and work folders, to
name only a few.
Electronic components and assemblies, if not correctly protected against ESD, can be permanently
damaged or destroyed when near or in contact with electrostatic charged objects. When you handle
components or assemblies that are not in protective bags and you are not sure whether they are static-
sensitive, assume that they are static-sensitive and handle them accordingly.
• Always use techniques to protect personnel and equipment from electrostatic discharge.
➢ESD Wrist or Heal strap (recommended for appliance and personal safety)
• Remove static-sensitive components and assemblies from their static-shielding bags only when you
are stationary and prepared to immediately install the component.
• Remove / install static-sensitive components andassemblies only with appliance power disconnected.
• Insert and seal static-sensitive components and assemblies into their original static-shielding bags.
• Always test your ESD strap before beginning any disassembly or assembly procedures.

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2. General Operation (Firmware MC:33, UI:33)
❖Menu System Overview
Additional operation features are found in the Menu System. To access this menu, touch and swipe
the display screen, Left or Right.
The menu icons are: Information, Settings, Power
- Information: The information menu is useful for viewing Alarm history, Software version, Serial
number, Build date, System voltage, Belt demand, iHeat information and for Exporting Logged data
files.
- Settings: The CUSTOMER level Settings Menu provides access to Units of Measurement, Customer
PIN setup, Belt Direction, Software Updating, and Recipe Download/Upload. This menu is protected
by the Customer PIN.
- Power: Touching the Power icon will simply place the oven into Cool Down mode, following a few
seconds of delay. The oven fans will continue to run until the oven temperature falls below 223F or
106C. Normal operation can be resumed by touching and holding the Power icon on the cooldown
screen.
❖Basic Operation
Control Use and Cleaning: The EDGE G2 display is a “touch” screen. Do not strike or impact the
screen with hard objects. Clean with a lightly dampened cloth, do not directly spray the display with
cleaning solutions or water.
Power Up: Power up and starting the oven system is performed by turning the POWER switch to the
ON position. Allow 5 seconds for the system to power up. Touch the power icon on the display.
Operation basics: Basic oven operation is adjustment of bake Temperature adjustment, bake time
adjustment, and main Fan Speed (Hz). While in MANUAL recipe mode (see Advanced Operation for
instructions to Change Recipe), touch the temperature, the adjustment screen will appear.

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Touch the UP/DOWN arrows to adjust the temperature. Touch the CHECK to accept or the X to cancel.
Repeat this method for Time and for the Fan Speed (Hz).
❖Advanced Operation
Change Recipe:
- Touch and hold the recipe namespace on the display for 1-2 seconds.
- Select the desired recipe using the UP/DOWN arrows, touch CHECK to accept.
-*Special items in this menu are:
- ‘<NEW>’ used to define a new recipe based on the current setting of ‘MANUAL’
- ‘MANUAL’ is a “test and tune” mode, allows easy adjustment of the baking parameters
CUSTOMER PIN is required (see CUSTOMER PIN).
Create a New Recipe:
- Define the new recipe in ‘MANUAL’ operation mode.
- Touch and hold the on-screen ‘MANUAL’ namespace for 1-2s.
- Select ‘<NEW>’ from the menu, CUSTOMER PIN is required.
- Define the recipe name (See Recipe NAMESPACE).
- Define/Verify Temp, Time, and Hz (60 is standard).
You may store up to 30 recipes. MANUAL mode is primarily for tuning a recipe, although unsecure,
the oven may be operated in this mode without ever defining a recipe.
Change a Recipe:
- Selecting the recipe (see Change Recipe).
- Touch and hold the recipe namespace on the display until a PIN entry screen appears.
Customer PIN is required.
- Advance through the parameters (Namespace, Temp, Time, Hz), adjustment as needed.
Deleting a Recipe:
- Selecting the recipe (see Change Recipe).
- Touch and hold the recipe namespace on the display until a PIN entry screen appears.
Customer PIN is required.
- In the Namespace adjustment, select ‘<DEL RCP>’.
- The control will default to ‘MANUAL’.

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Customer PIN: (also see CHANGE PIN)
- Touch each digit to adjust from 0-9.
- Adjust the value using the UP/DOWN arrows.
- When the pin is correct, touch the CHECK to accept or X to cancel without storing.
Recipe NAMESPACE:
- UP/DOWN (Orange box) arrows adjust the value of the alpha-numeric character (Red circle)
- To select the alpha-numeric character, touch it (Red Circle). This will advance to the next
character selection.
- Namespaces may be 8 characters long.
- When you complete the Namespace, touch the CHECK (Green box).
The X will cancel without storing any changes.
Temp:
- Use the UP/DOWN arrows to change the temperature value. (350F –600F, 177C –316C)
- When the temperature is correct, touch the CHECK to accept or X to cancel without storing.
Time:
- Use the UP/DOWN arrows to change the time value (03:00 –30:00).
- When the temperature is correct, touch the CHECK to accept or X to cancel without storing.
Hz: - Use the UP/DOWN arrows to change the VFD Frequency Hz (52 –68).
- When the Hz adjustment is correct, touch the CHECK to accept or X to cancel without storing.

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Belt Direction:
-*Belt direction AND finger pattern are a matched item. Reversing the direction of belt travel
often involves reversing the finger pattern in the oven.
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Customer PIN is required.
- Select ‘CUSTOMER’.
- Use UP/DOWN arrows to navigate to ‘BELT’, select.
- Select ‘FRONT DIR’.
- Select ‘L to R’ or ‘R to L’ to change the belt direction.
- Repeat for ‘REAR DIR’ if equipped with a split-belt system.
Units:
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Customer PIN is required.
- Select ‘CUSTOMER’.
- Select ‘DISPLAY’.
- Use UP/DOWN arrows to navigate to ‘UNITS’, select.
- Select ‘C’ or ‘F’ to change the units of measurements.
Change Pin:
-*This action will change the default Customer PIN. Default is 0000. Please remember this pin
for future use. If lost or forgotten, please contact MF&B for assistance.
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Customer PIN is required.
- Select ‘CUSTOMER’.
- Use UP/DOWN arrows to navigate to ‘PIN SET’, select.
- Touch each digit to adjust from 0-9.
- Adjust the value using the UP/DOWN arrows.
- When the pin complete, touch the CHECK to accept or X to cancel without storing.
Software Update:
-*Updates are available from https://edgeovens.com/support
- Follow the ‘Firmware Update Instructions’ which are also available for download.
Verify the software has installed correctly, see “Software Version Identification”.
Software Version Identification:
To view the current software installed in the oven:
- Swipe the control screen Left or Right to access the Menu System.
- Touch the INFORMATION icon to enter the Information Menu.
- Use UP/DOWN arrows to navigate to ‘UI VERSION’, select.
The UI version will be displayed. *If updated, this number will match the UI** filename.
To view the MC version, return to the Information menu.
- Use UP/DOWN arrows to navigate to ‘MC VERSION’, select.
The MC version(s) will be displayed. *If updated, this number will match the MC** filename.
If equipped with a split-belt system, MC1 and MC2 will be shown. If these numbers do not match,
please perform the software update process again.

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Recipe Download:
-*This feature will save the recipes stored within the control system on a USB Thumb drive.
- Remove the USB dust cover, located near the control cabinet, cooling fan.
- Insert a USB thumb-drive in the USB connector.
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Customer PIN is required.
- Select ‘CUSTOMER’.
- Use UP/DOWN arrows to navigate to ‘SYSTEM’, select.
- Use UP/DOWN arrows to navigate to ‘RECIPE DOWNLOAD’, select.
-*The file will be transferred very quickly (< 1s). When the control screen returns to the
DOWNLOAD screen, the process is complete.
- Remove the thumb-drive and install the dust cover over the USB port.
Recipe Upload:
-*This feature will load the recipes stored on a USB Thumb drive to the control system.
- Remove the USB dust cover, located near the control cabinet, cooling fan.
- Insert a USB thumb-drive in the USB connector.
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Customer PIN is required.
- Select ‘CUSTOMER’.
- Use UP/DOWN arrows to navigate to ‘SYSTEM’, select.
- Use UP/DOWN arrows to navigate to ‘RECIPE UPLOAD’, select.
-*The file will be transferred very quickly (<1s). When the control screen returns to the UPLOAD
screen, the process is complete.
- Remove the thumb-drive and install the dust cover over the USB port.
EXPORT:
-*This feature will export Log Data Files stored in the control system to a USB Thumb drive.
- Remove the USB dust cover, located near the control cabinet, cooling fan.
- Insert a USB thumb-drive in the USB connector.
- Swipe the control screen Left or Right to access the Menu System.
- Touch the INFORMATION icon to enter the Information Menu.
- Use UP/DOWN arrows to navigate to ‘EXPORT’, select.
-*The EXPORT process may take a few minutes, during this time the oven systems will stop or
be interrupted. It is important that the process complete successfully. If it does not, unplug the
oven for 30 seconds, reconnect and attempt again.
- When complete, remove the thumb-drive and install the dust cover over the USB port.
- Unplug the oven for 30 seconds before reconnecting and returning the oven to service.

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❖Service Operation
Service Menu:
- Swipe the control screen Left or Right to access the Menu System.
- Touch the GEAR icon to enter the Settings Menu, Service PIN is required (6453).
- Use UP/DOWN arrows to navigate to ‘SERVICE’, select.
Belt MIN/MAX Time:
-*Minimum and Maximum adjustment must be authorized by MF&B. Although the parameter IS
adjustable, this does not ensure the system is capable of achieving the set value. There are
physical limitations of the conveyor system. This must not be comprimised.
- Enter Service Menu.
- Use UP/DOWN arrows to navigate to ‘BELT’, select.
- Use UP/DOWN arrows to navigate to ‘TIME MIN’ or ‘TIME MAX’, select.
- Adjust the value using the UP/DOWN arrows,
- Touch the CHECK to accept or X to cancel without storing.
Temp MIN/MAX Time:
-*Minimum and Maximum adjustment must be authorized by MF&B. Although the parameter IS
adjustable, this does not ensure the modulating combustion system is capable of achieving the
set value. 177°C is the minimum assured set-point. 316°C is the maximum allowable operating
temperature, this must NEVER be adjusted higher.
- Enter Service Menu.
- Use UP/DOWN arrows to navigate to ‘TEMP’, select.
- Use UP/DOWN arrows to navigate to ‘TIME MIN’ or ‘TIME MAX’, select.
- Adjust the value using the UP/DOWN arrows,
- Touch the CHECK to accept or X to cancel without storing.

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3. Tools Required for Service
These are the basic tools requirements to handle most of the repairs in this manual.
❖Instruments
> Water Manometer. Best choice: Dwyer Series 1213-15 (InW.C.)
[mbar * 0.40146 = InWC]
> Digital Multimeter(s). Choices vary: Amprobe AM-570, Fluke 87-5
- V (AC and DC)
- A, mA, μA (AC and DC)
- Ohm / Ω
- CAP / /
❖Tools
> #2 Phillips screwdrivers, 1.5” and 4” shaft
> 2x Needle nose pliers
> Wire snips, strippers, crimpers
> Socket Set: 1/4”, 5/16”, 3/8”, 7/16”, 1/2”, 9/16”, and 12” of extension
> Wrench Set: 1/4", 5/16”, 3/8”, 7/16”, ½”, 9/16”, 11/16”, 5mm, 8mm
> 2x 12” Pipe wrenches
> 1x 12” Adjustable wrench
> SAE Allen wrench set
> Heavy duty rivet gun for structural repairs
> Dead Blow hammer
> Wheel Puller for fan blade removal
❖Supplies
> Pipe sealant
> 220/320 sandpaper or emery cloth
> Leak detect solution (soap water solution)

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4. Sequence of operations (Modulating)
❖Electrical supply
EDGE, WORLD, gas fired ovens operate on 230VAC/50Hz, single phase power.
The standard power configuration is a 3-wire supply:
•1 supply line, 1 neutral and 1 ground.
For all wiring configurations, the voltage, when measured from Line to Neutral, should never exceed
253V. Ground to Neutral should not exceed 2VAC.
*3PH, 3/4HP Main Fan systems utilize a VFD and an Air Switch for Safety / Proof of Air.
This Proof of Air switch will be referred to as the “Safety Switch” within this chapter.
❖MAIN POWER switch
Closing the MAIN POWER switch energizes:
✓The 24VDC SMPS
✓The 24VDC supplies power to the G2 Control System
✓24VDC is supplied to the “Sense” (P10.5) of the G2 Control System
❖Touch POWER Icon
Touching the POWER Icon energizes:
✓K2 is energized (P10.2), as well as the iHeat
✓Control System quickly evaluates the state of the Air Switch; If Air Switch is closed, a
system alarm is triggered
✓K1 Relay is energized (P10.1), powering the Cooling Fan, VFD or 1PH Main Motor and
the Cool Down circuit
✓Communication is established with the VFD
✓Control system evaluates state of the Air Switch; If Air Switch is open, a system alarm is
triggered
✓Air Switch (or Centrifugal in 1PH motor systems) feed Line voltage to Over-Temp
Protective Thermostat which supplies 24VAC transformer
✓24VAC is supplied to P9.6. Control system powers combustion system through P9.3 ->
iHeat RELAY COM
✓The conveyor system is energized
❖Main Fan is Powered
✓Cavity pressure reaches 0.374” mbar, safety switch closes
✓Safety Switch powers 24VAC transformer and iHeat 230V (L)
✓24VAC Transformer powers G2 Control, Burner Voltage (P9.6)
✓iHeat RELAY COM is powered by G2 Control, Burner Voltage output (P9.3)

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❖iHeat is Active, begins system test
✓iHeat spins up the induction blower and verifies TACH feedback (absence of TACH
results in brief Blower full ON state and a failed verification (not within ±10% of expected
TACH feedback)
✓iHeat verifies 4-20mA control signal from the control system (must be > 2mA)
✓iHeat performs self-check on the VALVE output (square wave detection)
✓iHeat begins 30s pre-purge timer, following which, iHeat begins Run Cycle
❖iHeat control ignition/run cycle (1)
✓Pre-purge period expires, iHeat RELAY N.O./COM contacts are closed, passing 24VAC
✓24VAC from RELAY N.O. supplies Ignition Module (FS/SI) and Optical Detector (FS)
✓iHeat valve output (0-10VDC) and MOTOR L/N output to induction blower are modulated
according to control signal
❖Ignition Module Operation
✓FS/SI performs verification of “No Flame” prior to ignition trial
✓FS/SI sends 24VAC from valve output to Honeywell valve cable (output of cable is 24VDC)
✓FS/SI excites electrodes for a period of 4s
✓If flame is detected, valve output remains powered, system is now in normal operation mode
✓If flame is not detected, 30s inter-purge delay followed by 2nd trial, lock-out after 3rd trial (112s)
❖iHeat control ignition/run cycle (2), “Recovery ON/OFF”
✓iHeat modulates induction motor and valve according to control signal
✓If control signal reaches and maintains 4mA for 45 seconds, an over-temperature situation
is presumed: RELAY N.O. will open, deenergizing the ignitionsystem until control loop signal
is above 10.2mA *(gas pressure out of adjustment) **STAGE 1 OTP
✓If control signal falls below 2mA, RELAY N.O. will open until power cycle occurs *(lost control
signal)
✓If Blower Motor TACH signal falls ±10% of expected, RELAY N.O. will open until power cycle
occurs
❖High limit prevention **STAGE 2 OTP
The high limit prevention circuit will shut down the combustion system (P9.3) if the bake chamber
temperature exceeds 650°F / 343°C. This will also occur if the thermocouple is disconnected or has a
break. **STAGE 3 OTP, a 700°F / 371°C Manual Reset Thermostatic switch is installed in the back of
the oven. This thermostatic switch, when opened, will remove power from the combustion system.
❖Cool down
When the bake chamber temperature exceeds 225°F / 107°C, the cool down circuit will be triggered.
Relay K1 (P10.1) will be held ON until the temperature falls to 223°F / 106°C. During this time, the
Oven Control will display the temperature, Cool Down Icon, and a Power Icon. The cooling fan and
Main Motor fan will remain ON during the cool down process.
Before performing any service tasks on the oven, be sure the power and gas supply have been
disconnected. Always make good notes and take photos to ensure correct re-assembly.

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5. System setup (Modulating)
❖Orifice
The orifice meters the gas flow to the burner. The oven will be shipped from the factory with the correct
orifice size for the specific oven model and gas type. When converting between gas types, see Chapter
6, Gas conversion, in this manual.
❖Air shutter
The air shutter allows the correct amount of combustion air to be drawn into the blower and delivered
to the burner. The shutter is factory set to the correct opening for the oven model and type of gas.
Model Air Shutter Settings
EDGE1830/2440/2460/3240/3260 G20/NAT - 1.25, G30/G31/LPG - 1.5
EDGE3860/3270/4460 G20/G30/G31(ALL TYPES) - 2.5
❖Modulated Induction blower calibration (blower replacement only)
The oven is delivered with the induction blower pre-calibrated to the iHeat. Calibration is only performed
IF the Induction blower motor has been replaced. The calibration process is as follows:
•Turn the oven off.
•Adjust the air shutter to the correct setting per type and model.
•Move the dip switches on the iHeat control module to: 1-7 off, 8 on.
•With the gas supply valve remaining in the closed position, power on the oven.
•The iHeat control module will begin to “learn” the combustion blower. During this calibration
process, the lights on the control board will illuminate in the following manner: FLASH –
flash, T-INPUT –off, VALVE –off, BLOWER –on, 24V/CAL –flash. The calibration process
will take approximately 8 minutes, but it may be longer. If the iHeat is trying to calibrate,
allow it to finish. A calibration failure will result in the BLOWER LED flashing. A successful

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calibration is indicated by continuous illumination of the 24V/CAL light. When the blower is
calibrated, the following steps must be done to place the oven in the normal usage mode:
•Turn the oven off.
•Move the number 8 switch on the iHeat control module to the off position, place the other
switches in the correct position for the model oven and gas type. (See Chapter 6, Final
adjustments for DIP settings.)
•Return oven to service.
❖Modulating gas valve
The modulating gas valve has two pressure ports; one allows for the measurement of inlet or line
pressure, the other allows for the measurement of manifold or outlet pressure. The taps are located on
the top of the valve near the modulating coil. The tap closest to the outlet of the valve measures the
manifold pressure.
Two manometers are required if you wish to measure the inlet and manifold pressures simultaneously.
To measure the pressures, make sure gas to oven is shut off. The center of each pressure tap has a
set screw. Turn each screw counter-clockwise 1.5 –2 turns. Place the measuring hose of the
manometers over the outside of the pressure tap. Turn on the gas to the oven. Verify that the gas
pressure supplied to the oven is adequate by reading the gas pressure at the inlet pressure tap and
comparing it to the minimum supply pressure as listed below.
➢Maximum Inlet Supply Pressure
External regulation is required if inlet pressure is above 37 mbar (14.8” WC).
➢Minimum Inlet Supply Pressure
G20/NAT - 14 mbar (6” WC)
G31/LPG - 27 mbar (11” WC)
The MANIFOLD PRESSURE TAP isused while setting the High and Low press adjustmentsthat follow.

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Common Name Gas Type High-Fire Low-Fire
Natural Gas G20 - I2H / I2E 11.2 mbar 0.5 mbar
Natural/Propane Mix G25 - I2L / I2E+ 17.4 mbar 0.6 mbar
Butane G30 - I3B / I3B/P 18.2 mbar 0.5 mbar
Propane G31 - I3P / I3+ 24.9 mbar 0.7 mbar
➢High-Pressure Setting
Perform this operation before adjusting the Low-Pressure Setting. Starting with a cold oven, turn
the oven on with a temperature setting of 260°C. Wait until the burner has established a flame. Rotate
the larger nut (8mm) found on top of the modulating coil to the desired setting as indicated by the
manometer measuring the manifold pressure (reference the settings above); clockwise to increase the
gas pressure, counterclockwise to decrease the gas pressure. Note: It is very important not to over-
tighten the adjustment nut. The preferred method for adjusting the high-pressure setting is to turn the
adjustment nut counterclockwise until the outlet gas pressure is below the desired gas pressure, and
then slowly turn the adjustment nut clockwise until the desired outlet pressure is achieved. Do not
continue to turn the adjustment nut if additional clockwise turning of the nut does not produce a
noticeable increase in outlet pressure. Over adjustment of the high-pressure adjustment nut can lead
to a condition in which the low-pressure adjustment is mechanically limited and unable to be adjusted
(valve damage).
➢Low-Pressure Setting
Perform this operation after adjusting the High-Pressure Setting. Turn the burner switch off.
Move all iHeat dip switches to theoff position and then turn the number 7dip switch on. Turn the burner
switch on. The FLASH, VALVE and CAL/24 lights will flash, telling the operator the iHeat board is in
the valve calibration mode. The burner should light (30s delay). If the burner fails to light, turn the
burner switch off, adjust the low gas pressure setting nut clockwise to a higher pressure. Turn the
burner switch on and attempt to light. Adjust the gas valve tothe correct low-pressure setting (reference
the setting above); clockwise to increase the gas pressure, counterclockwise to decrease the gas
pressure. After adjusting low pressure, turn the burner switch off. Move the number 7 dip switch to the
off position. Return the oven to normal operating mode by turning the appropriate dip switch on for
your oven model and gas type. (See Chapter 6, Final adjustments for DIP settings.)

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NOTE: IT IS VERY IMPORTANT NOT TO CHANGE HIGH PRESSURE SETTINGS AFTER
ADJUSTING THE LOW PRESSURE. HIGH PRESSURE CHANGES AFFECT LOWPRESSURE. LOW
PRESSURE MUST ALWAYS BE CHECKED AFTER ANY HIGH-PRESSURE ADJUSTMENTS.
The set-up of the burner control system is now complete. Replace any covers or panels removed to
access the burner controls.
❖Circulation fan speed (VFD Adjustment)
This adjustment will change the pressure of the impingement air within the oven. Adjustment of the
VFD is available within all recipe modes. The default set-point is 60Hz, 1700 RPM.
The speed adjustment range is roughly between 1416 RPM and 2040 RPM. This range is approximate
as the speed correlates to the output frequency set-point of the VFD (50Hz –72Hz). Therefore,
adjusting the VFD output frequency adjusts the circulation fan speed.