Slant/Fin VGH-299-CH Guide

©
Slant/Fin Corp. 2018 • 1218 • PUBLICATION
V
GH-CH-40
E95.1601EN032
MODELS VGH-299-CH, VGH-399-CH
and VGH-500-CH
HIGH EFFICIENCY CONDENSING GAS BOILER
QUICK CONTENTS
FULL TABLE OF CONTENTS................................................................2
1.0 SAFETY GUIDELINES.......................................................................4
2.0 INTRODUCTION. ...............................................................................6
3.0 DISPLAY AND BUTTONS......................................................................8
4.0 STARTING THE BOILER....................................................................9
5.0 THE MENU (BUTTON)......................................................................... 11
This manual must be left with owner and should be
hung on or adjacent to the boiler for reference.
CH - USER’S INFORMATION MANUAL
70.0 °F
59.0 °F
WARNING:
Ifthe informationinthisman-
ual is not followed exactly, a
fire or explosion may result
causing propertydamage,
personalinjuryorlossoflife.
- WHATTODO IF YOU SMELLGAS
• Do not tryto light any appliance.
• Do not touch any electrical switch; do not use any
phone in yourbuilding.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions
• If you cannot reach your gas supplier, call the fire de-
partment.
- Installation and service must be performed by a qual-
ified installer, service agency or the gas supplier.
California Proposition 65 Warning:
ThisproductcontainschemicalsknowntotheStateofCaliforniatocausecancer,birthdefects,
orotherreproductiveharm.
- Donotstoreoruse gasoline
orother flammable vapors
and liquids in the vicinityof
this or any other appliance.

E95.1601EN032 VGH-CH user manual
2
TABLE OF CONTENTS
1SAFETY GUIDELINES,...................................................................................................................... 4
2INTRODUCTION................................................................................................................................ 6
2.1E XPLANATIONS ....................................................................................................................... 6
2.2M AINTENANCE AND INSPECTION ............................................................................................... 6
On a Continuous basis ............................................................................................... 6
On a Monthly basis..................................................................................................... 6
On an Annual basis (every 12 months)....................................................................... 7
2.3F OR INSTALLATIONS IN THE C OMMONWEALTH OF M ASSACHUSETTS ............................................ 7
3Display and buttons ......................................................................................................................... 8
3.1D ISPLAY I CONS ....................................................................................................................... 8
4Starting the boiler............................................................................................................................. 9
4.1C HANGING THE S ETPOINT AND / OR E NABLING CH/DHW............................................................. 9
Changing the Central Heating setpoint directly......................................................... 10
Changing the DHW setpoint directly......................................................................... 10
Enable / Disable CH or DHW control........................................................................ 10
5The MENU (Button)......................................................................................................................... 11
5.1P ASSWORD .......................................................................................................................... 11
5.2L ANGUAGE SETTING .............................................................................................................. 11
5.3A VAILABLE M ENU ITEMS ........................................................................................................ 11
Central Heating (CH)................................................................................................ 12
Domestic Hot Water (DHW)...................................................................................... 12
Information................................................................................................................ 12
Software Versions .................................................................................................... 12
Boiler Status............................................................................................................. 12
Boiler History............................................................................................................ 12
Error log.................................................................................................................... 12
Service ..................................................................................................................... 13
Settings .................................................................................................................... 13
General Settings....................................................................................................... 13
Language ................................................................................................................. 13
Unit Type.................................................................................................................. 13
Date & Time.............................................................................................................. 13
Time zone settings.................................................................................................... 13
Display settings ........................................................................................................ 13
Cascade mode ......................................................................................................... 14
Other Settings........................................................................................................... 14
Boiler settings........................................................................................................... 14
5.4B OILER H ISTORY ................................................................................................................... 14
5.5E RROR LOGGING ................................................................................................................... 14
5.6S ERVICE REMINDER .............................................................................................................. 15
5.7S YSTEM TEST ....................................................................................................................... 15

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3
IMPORTANT
READ ALL OF THE FOLLOWING WARNINGS AND STATEMENTS BEFORE READING
THE INSTALLATION INSTRUCTIONS
Danger Sign: indicates the presence of an imminently hazardous situation that will cause
death, serious personal in
j
ur
y
or substantial propert
y
dama
g
e.
Warning Sign: indicates the presence of a hazardous situation which can cause death, se-
rious personal injury or substantial property damage.
Caution Sign plus Safety Alert Symbol: indicates a hazardous situation which will or can
cause minor or moderate personal injury or property damage.
Caution Sign plus a lightning bolt: indicates the risk of electric shock and the potential of
hazards due to electric shock.
Notice Sign: indicates special instructions on installation, operationor maintenance that are
important but not related to personal injury or property damage.
This Boiler must be installed by a licensed and trained Heating Technician or the Warranty
is void. Failure to properly install this unit may result in property damage, serious injury to
occupants, or possibl
y
death.
DANGER
WARNING
CAUTION
CAUTION
NOTICE
WARNING

E95.1601EN032 VGH-CH user manual
4
1 SAFETY GUIDELINES,

E95.1601EN032 VGH-CH user manual
5
This boiler is equipped with a pressure switch in the event of a blocked vent the boiler
will lockout. No attempt by the user/owner may be made to put the boiler back intro
operation. A qualified service technican must be notified of the issue. The boiler may
only be reset by a qualified service technican after they have diagnosed and corrected
the issued that caused the safety lockout of the boiler.
“Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect
the electrical supply to thecirculator. Instead, shut off the gas supplyat a location external
to the appliance.”
Slantfin recommends the installation of a carbon monoxide detector in the boiler room for
all installations.
WARNING: There are no user serviceable parts on this boiler. Warranty does not cover
defects caused by attempts to service this boiler by someone other than a qualified gas
service technician. These attempts could cause property damage, personal injury or loss
of life.
WARNING: Improper installation, adjustment, alteration, service or maintenance can
cause property damage, personal injury (exposure to hazardous materials) * or loss of
life. Installation and service must be performed by a qualified installer, service agency or
the gas supplier (who must read and follow the supplied instructions before installing,
servicing, or removing this boiler. This boiler contains materials that have been identified
as carcinogenic, or possibly carcinogenic, to humans)
Do not use this boiler if any part has been under water. Immediately call a qualified ser-
vice technician to inspect the boiler and to replace any part of the control system and any
gas control which has been under water
WARNING: Crystalline Silica - Certain components in the combustion chamber may
contain this potential carcinogen. Improper installation, adjustment, alteration, service or
maintenance can cause property damage, serious injury (exposure to hazardous mate-
rials) or death. Refer to Section 19 for information on handling instructions and recom-
mended personal protective equipment. Installation and service must be performed by a
qualified installer, service agency or the gas supplier (who must read and follow the sup-
plied instructions before installing, servicing, or removing this boiler. This boiler contains
materials that have been identified as carcinogenic, or possibly carcinogenic, to hu-
mans).
CAUTION
DANGER
NOTICE
WARNING
WARNING
DANGER
WARNING

E95.1601EN032 VGH-CH user manual
6
2 INTRODUCTION
This manual is written for the User. Slant/Fin is not accountable for any damage caused by failure to correctly
follow these instructions. For service and repair purposes use only original Slant/Fin spare parts. All documentation
produced by the manufacturer is subject to copyright law. This manual is subject to change without notice.
2.1 Explanations.
VGH = Condensing Boiler
DHW = Domestic Hot Water
CH = Central Heating (for central heating purposes and/or indirect hot water)
PB = display board/ control panel (Pixel Button)
299/399/500 = Model number of the boiler.
Pump = Circulator (Sometimes, in the software e.g., the word “pump” is used, this is a circulator).
2.2 Maintenance and inspection
O N A C ONTINUOUS BASIS
Do not store or use flammable vapors or liquids, such as gasoline, in the vicinity of the boiler.
Do not store or use in the boiler room and keep the boiler area free from the following items
Spray cans containing chloro-/fluorocarbons
Ammonium and/or ammonium solutions
Permanent wave solutions (hair product)
Chlorinated waxes and/or cleaners
Swimming pool chemicals based on chlorine
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
 Adhesives used to fasten building products and other similar products
Do not expose the boiler to dust from construction or woodworking
O N A M ONTHLY BASIS
Visually inspect the venting system for proper size and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe
condition.
Inspect around the exhaust vent and air inlet terminations outside the home for obstructions.
Keep area clear of snow and debris. Inspect also for any gaps at the wall penetration(s) which
could allow vented gasses to reenter the home.
Visually inspect water and gas pipes for leaks.
Visually inspect to see that the condensate trap not blocked and is filled with water.
If there is a condensate neutralizer installed check to see if it has neutralizing media in it.
Inspect the pressure reflief valve for signs of leakage
If any problems are found during inspection notify a qualified service technician
Maintenance and inspection of the boiler must be carried out at the following occasions:
• When a number of similar error codes and/or lock-outs appear.
• At least every 12 months maintenance must be done to ensure safe and efficient operation.
Dama
g
e caused b
y
lack of maintenance will not be covered under warrant
y

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7
O N AN A NNUAL BASIS ( EVERY 12 MONTHS )
Have a qualified service technician perform a complete service and maintenance of the boiler in
accordance with the Installation, Operation, and Service manual.
2.3 For installations in the Commonwealth of Massachusetts.
The following local requirements apply in addition to all other applicable NFPA requirements:
For direct- vent boilers, mechanical-vent heating appliances or domestic hot water equipment, where the bottom
of the vent terminal and theintake is installed below four feet above grade the following requirements must comply:
1) If not present on each floor level where there are bedrooms, a carbon monoxide detector and alarm must
be placed in a living area outside the bedrooms. The carbon monoxide detector and alarm must comply
with NFPA 720 (2005 Edition).
2) A carbon monoxide detector and alarm shall be located in the room that houses the boiler and/or
equipment and shall:
a) Be powered by the same electrical circuit as the boiler and/or equipment such that only one service
switch services both the boiler and the carbon monoxide detector;
b) Have battery back-up power;
c) Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and
d) Have been approved and listed by a Nationally Recognized Testing Lab as recognized under 527
CMR.
3) A product-approved vent terminal must be used, and if applicable, a product approved air intake must be
used. Installation shall be performed in strict compliance with the manufacturer’s instructions. A copy of the
installation instructions shall remain with the boiler and/or equipment at the completion of the installation.
4) A metal or plastic identification plate shall be mounted at the exterior of the building, four feet directly above
the location of vent terminal. The plate shall be of sufficient size to be easily read from a distance of eight
feet away, and read “Gas Vent Directly Below”.
For direct-vent boilers mechanical-vent heating boilers or domestic hot water equipment where the bottom of the
vent terminal and the intake is installed higher than four feet above grade the following requirements must comply:
1) If not present on each floor level where there are bedrooms, a carbon monoxide detector and alarm must
be placed in a living area outside the bedrooms. The carbon monoxide detector and alarm must comply
with NFPA 720 (2005 Edition).
2) A carbon monoxide detector shall:
a) Be located in the room where the boiler and/or equipment is located;
b) Be either hard-wired or battery powered or both; and:
c) Shall comply with NFPA 720 (2005 Edition).
3) A product-approved vent terminal must be used, and if applicable, a product- approved air intake must be
used. Installation shall be in strict compliance with the manufacturer’s instructions. A copy of the installation
instructions shall remain with the boiler and/or equipment at the completion of the installation.
WARNING: Improper installation, adjustment, alteration, service or maintenance can
cause property damage, personal injury (exposure to hazardous materials) * or loss of
life. Installation and service must be performed by a qualified installer, service agency
or the gas supplier (who must read and follow the supplied instructions before installing,
servicing, or removing this boiler. This boiler containsmaterials that havebeen identified
as carcinogenic, or possibly carcinogenic, to humans)
WARNING: Crystalline Silica - Certain components in the combustion chamber may
contain this potential carcinogen. Improper installation, adjustment, alteration, service or
maintenance can cause property damage, serious injury (exposure to hazardous mate-
rials) or death. Refer to Section 19 for information on handling instructions and recom-
mended personal protective equipment. Installation and service must be performed by a
qualified installer, service agency or the gas supplier (who must read and follow the sup-
plied instructions before installing, servicing, or removing this boiler. This boiler contains
materials that have been identified as carcinogenic, or possibly carcinogenic, to hu-
mans).
WARNING
WARNING

E95.1601EN032 VGH-CH user manual
8
3 Display and buttons
3.1 Display Icons
On / off switch. Switches electrical power to the boiler
Connector for computer cable
Reset lockout error
Main Menu
Escape / Return to the status overview
Right
Enter a menu item or confirm selection in Status overview
(when directly setting Actual setpoint or DHW setpoint)
Left
Return to previous menu item or Status overview
Up
Directly select Actual setpoint of DHW setpoint in the Status overview,
push RIGHT to confirm and use UP or DOWN to adjust value.
Down
Directly select Actual setpoint of DHW setpoint in the Status overview,
push RIGHT to confirm and use UP or DOWN to adjust value.
Enter
Confirm a setting or enter a menu item
F
170.0 °F
99.0 °F
Central Heating demand
Domestic Hot Water demand
Indicates that the appliance burner is ON
Cascade Emergency Mode active
Error notification

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9
4 Starting the boiler.
If the boiler is not on make sure the gas valve beneath the boiler is open and the power to the boiler has been
connected and is turned on, use the on/off button to switch the boiler on. The following screen will occur:
This screen is active during power up until communication with the main Control has been established.
After communication has been established the Dair mode starts and the following screen appears:
The “De-Air” sequence is a safety function that starts at every power-up and is used to remove the air from
the heat exchanger. The De-Air sequence takes around 14 minutes to complete. It can be cancelled by
pressing the Enter button for over 5 seconds.
After completion or manual ending the “De-Air” sequence one of the following Status overview screens appears:
OR
4.1 Changing the Setpoint and/or Enabling CH/DHW.
This can be done directly via the Status overview (as shown above) or via the MENU.
When CH is active, you can adjust the Actual setpoint directly on the bottom of the Status overview. When DHW
is active, you can adjust the DHW setpoint directly on the bottom of the Status overview.
This means that when CH is active, you cannot set the DHW setpoint directly via the Status overview. When
DHW is active, you also cannot set the Actual setpoint (CH setpoint) directly via the Status overview.
Central Heating only
Central Heating
AND
Domestic Hot Water
D AIR R UNNING
70.0 °F

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10
C HANGING THE C ENTRAL H EATING SETPOINT DIRECTLY .
Press the UP or DOWN button to select the mode:
70.0 °C is just an example of a possible temperature value.
Use the left/right buttons to move the sign to the front of the temperature digits.
Use UP/DOWN buttons to increase/decrease the setpoint.
Press the ENTER or RIGHT button to confirm your alteration or press the BACK or LEFT button to cancel
A setpoint is only visible on the main screen when no error or alert is active. In case of an active error or alert,
the bottom right part of the PB screen is used to display the error or alert
C HANGING THE DHW SETPOINT DIRECTLY .
Only applicable if this function is available.
Press the UP or DOWN button to select the mode:
57.0 °C is just an example of a possible temperature value.
Use the left/right buttons to move the sign to the front of the temperature digits.
Use UP/DOWN buttons to increase/decrease the setpoint.
Press the ENTER or RIGHT button to confirm your alteration or press the BACK or LEFT button to cancel.
A setpoint is only visible on the main screen when no error or alert is active. In case of an active error or alert,
the bottom right part of the PB screen is used to display the error or alert
E NABLE / D ISABLE CH OR DHW CONTROL .
The CH or DHW Enable/Disable option is available when its set-up in the software (by the installer) only.
Press the UP or DOWN button to select the mode:
OR
Use the left/right buttons to move the sign to the front of Enable/Disable text.
Use UP/DOWN buttons to change from Enabled to Disabled or vice versa
Press the ENTER or RIGHT button to confirm your alteration or press the BACK or LEFT button to cancel
CH Setpoint 70.0 °F
CH Setpoint 70.0 °F
DHW Store Setpoint 57.0 °F
DHW Store Setpoint 57.0 °F
CH Control ********
CH Setpoint Enabled
DHW Control ********

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11
5 The MENU (Button).
Enter the menu by pressing the MENU button once. The header in the screen shows you are inside the main
menu. Whilst scrolling through the menu you will see that the selected menu item is shown in a white rectangle.
At the right, there will be an icon shown, depending on the selected item.
The number of items depends on the selected/programmed options by the installer.
Enter a menu item by pressing ENTER or RIGHT.
The header shows your location inside the menu, as seen in the following image on the next screen:
Ifyouareinsidethemenu(oramenuitem)andwantto return directly tothe Status overview press MENU/ESC.
If you want to go back one step in the menu press BACK/LEFT. Going tothe Start-up screen directly is achieved
by pressing the Menu button once.
It’s also possible to set the setpoint at this stage by performing the same steps as described above at § 4.1.1
and § 4.1.2.
5.1 Password
Menu’s protected by a password are only accessible by the installer.
Passwords are always customer specific and (for safety reasons) will be provided to the installer only!
The following menu items require a password:
Menu item Location inside menu
StartupSettings Settings/General Settings/Other Settings/Startup Settings
BoilerParameters Settings/BoilerSettings/Boiler Parameters
Module Cascade Settings Settings/Boiler Settings/Module Cascade Settings
Boiler Cascade Settin
g
s Settin
g
s/BoilerSettin
g
s/Boiler Cascade Settin
g
s
5.2 Language setting
Be aware DO NOT set the language to the Chinese Language if you are not familiar with this language. Contact
your supplier for instructions if the language is set to Chinese and needs to be reset to another language.
5.3 Available Menu items
Depending on the installed/programmed options by the installer following menu items could be visible.
Menu / Parameter Description Value / Unit
CentralHeating (CH) Enterthe Central Heating (CH) menu

DomesticHot Water (DHW) Enter the Domestic HotWater (DHW) menu

Information Enter the Information menu

Settings Enter the Settings menu

System Test Enter the System Testmenu

Central Heating (CH)
Domestic Hot Water (DHW)
Information
Settings
Central Heating (CH)
CH Set
p
oint 170.0 °F
Password
0* * *

E95.1601EN032 VGH-CH user manual
12
C ENTRAL H EATING (CH)
D OMESTIC H OT W ATER (DHW)
Menu / Parameter Description Value / Unit
DHWSetpoint Set the DHW setpoint °C/°F
DHWStoreSet
p
oint Set the DHW store set
p
oint for DHW mode1 and 2 °C/°F
I NFORMATION
S OFTWARE V ERSIONS
Menu / Parameter Description Value / Unit
Display Display the software checksum [xxxx xxxx]
Boiler Display the boiler software checksum [xxxx xxxx]
DeviceGrou
p
Dis
p
la
y
the boiler
g
rou
p
ID xxxMN
B OILER S TATUS
Menu / Parameter Description Value / Unit
FlowTemperature Actual supply flow temperature °C/°F
Flow 2 Temperature Actual supply 2 flow temperature °C/°F
ReturnTemperature Actual return temperature °C/°F
DHWTemperature Actual DHW temperature °C/°F
DCWTemperature Actual DCW temperature °C/°F
OutsideTemperature Actual outside temperature °C/°F
Flue Temp Actual flue gas temperature °C/°F
Flue 2 Temp Actual flue gas 2 temperature °C/°F
SystemTemperature Actual system temperature °C/°F
0-10 V Input Actual 0-10 V input value V
Flowrate Actual DHW flowrate l/min
RTInput Actual RT input status open/closed
WaterPressure Actual CH water pressure bar/psi
FanSpeed Actual fan speed RPM
Ionization Actual ionization current uA
State Actual burner state

Error Actual internal error code #
Calculated Set
p
oint
A
ctual CH set
p
oint °C/°F
B OILER H ISTORY
Menu / Parameter Description Value / Unit
Successful Ignitions Display the number of successful ignitions #
Failed Ignitions Display the number of failed ignitions #
Flame Failures Display the number of flame losses #
Operation Days Display the total time in operation days
CH Burner Hours Display the amount ofburn hours for CH hrs.
DHWBurner Hours Dis
p
la
y
the amount of burn hours for DHW hrs.
E RROR LOG
Menu / Parameter Description Value / Unit
Error Log Display the complete errorlog

Filter Error Type Set the error log filter

ClearErrorLo
g
Clear the com
p
lete errorlo
g
Menu / Parameter Description Value / Unit
CHSetpoint Set the CH setpoint °C/°F
Outdoor reset Enter the Outdoor Reset menu

Menu / Parameter Description Value / Unit
Software versions Enter the Software Versions menu

BoilerStatus Enterthe Boiler Status menu

BoilerHistory Enterthe Boiler History menu

Error Log Enterthe Error Log menu

Service Enter the Service menu


E95.1601EN032 VGH-CH user manual
13
S ERVICE
Menu / Parameter Description Value/ Unit
Servicehistory Display the service history

Burn hours since last service Display the burn hours since last service hrs.
Burn hours till service Display the hours remaining until next service hrs.
ResetServiceReminder Reset the service reminder
S ETTINGS
Menu / Parameter Description Value / Unit
General Settings Enterthe General Settings menu

BoilerSettin
g
s Enterthe Boiler Settin
g
s menu
G ENERAL S ETTINGS
Menu / Parameter Description Value / Unit
Language Enter the Language menu

Unit Type Enterthe Unit Typemenu

Date& Time Enter the Date & Time menu

Cascade mode Enterthe Cascade Mode menu

Other Settin
g
s Enter the OtherSettin
g
s menu
L ANGUAGE
Menu / Parameter Description Value / Unit
English Select the English language English
Français Select the French language Français
中文
Select the Chinese language
中文
Italiano Select the Italian lan
g
ua
g
e Italiano
U NIT T YPE
Menu / Parameter Description Value / Unit
Metric (˚C, bar) Select Metric units ˚C, bar
Im
p
erial
(
˚F,
p
si
)
Select Im
p
erial units ˚F,
p
si
D ATE & T IME
Menu / Parameter Description Value / Unit
Date Set the current date dd-mm-yyyy
Time Set the current time hh:mm
TimeZone Settings Enterthe time zone settings menu

Dis
p
la
y
Settin
g
s Enter the dis
p
la
y
settin
g
s menu
T IME ZONE SETTINGS
Menu / Parameter Description Value / Unit
Time Zone Correction Set the Time Zone Correction

Daylight Savings Time Select the daylight savings time mode

DISPLAY SETTINGS
Menu / Parameter Description Value/ Unit
Time Notation Select 24h or 12h time notation 24h/12h
DateOrder Select the date-format

Day of Month Select how the day of month is displayed 1 or 2 digits
Month Select how the month is displayed

Year Select how the yearis displayed 2 or 4 digits
Date Separation Character Select the date separation character

Day of Week Select how the day of week is displayed

Seconds Select if seconds are dis
p
la
y
ed
y
es/no

E95.1601EN032 VGH-CH user manual
14
C ASCADE MODE
Menu / Parameter Description Value / Unit
Full Select full cascade mode

Basic Select basic cascade mode

Note: for proper functioning of the cascade system, some settings have to be changed, see § 15.4.2
"Emergency mode" in the installation manual.
OTHER SETTINGS
Menu / Parameter Description Value / Unit
Modbus Address Select the Modbus communication address 0…255
Modbus Stopbits Select the number of Modbus communication stopbits 1 – 2
StartupSettings Select thestart-up logo (if enabled)

BOILER SETTINGS
Menu / Parameter Description Value / Unit
BoilerParameters Enter the BoilerParameters menu

Module Cascade Settings Enter the Module CascadeSettings menu

BoilerCascadeSettings Enter the BoilerCascade Settings menu

Service Enter the Service menu

5.4 Boiler History
The boiler history (found in the information menu) displays several history counters that keep track of the boiler
usage. The following boiler history data is available:
(Sub) Menu item Description
Successful Ignitions Number of successful ignitions.
Failed Ignitions Number of failed ignitions.
Flame Failures Number of flame failures (loss of flame).
Operation Days Number of days that the appliance is operational (powered ON).
CH Burner Hours Number of hours that the appliance has burned for Central Heating.
DHW Burner Hours Number of hours that the appliance has burned for Domestic Hot Water.
5.5 Error logging
Errors will be logged for a stand-alone system or for a complete cascade system (based on the cascade set-
tings). The display will monitor the error number(s) it receives from the boiler(s): new errors will be stored in
the error log.
An error will be logged with a (Real Time Clock) time stamp (date and time) when the error was detected and
a boiler ID of the boiler on which the error was detected.
Note: the error log is a completely different error logging mechanism than the one used by the burner control
itself. Therefore, the error log is different from the (internal) error history of the burner control.
The error log can be seen from the error log menu, which is located in the Information menu. In the Error log
menu the following options can be selected:
(Sub) Menu item Description
Error Log Show the error log (based onthe selected filter options)
Filter Error Type Filter errors based on the Error type (lockout/blocking)
FilterBoiler ID (CascadeSystem only) Filter errors based on BoilerID (Managing, Dep 1, Dep2, etc.)
ClearErrorLog Clear the error log (protected by password)
When no filtering option is selected (disabled) the error log will show all errors for that category. So, if both filters
are disabled, the error log will show all the errors in the log.

E95.1601EN032 VGH-CH user manual 15
The following table describes what is displayed inside the Error log:
ErrorLog content Description
Firstline - Boiler ID (for which boiler the error was detected – cascade system only)
- Error code (internal)
- Errornumber
- Errortype (lockout/blocking)
Secondline - Error description
Bottomline - TimeStamp (date and time)when the errorwas detected (in the formatconfiguredin the Date & Time settings menu)
- The selected error index from the total numbers of errors in the (filtered) error log
5.6 Service reminder
The Service reminder will remind the owner/user of the appliance to service the appliance every 2000 burn
hours. When service is not done within this time, a message will be shown on the screen: "Service is required!",
alternating with the normal status display.
NOTE: with the message "Service is required" the boiler keeps running , but maintenance must be done before
resetting this message.
When the Service reminder has become active, the time it takes before service is actually done is being logged
(in hours). This time is called the Service Overdue Time.
The Service reminder can be reset by the installer who services the appliance.
Service status information can be viewed: Menu/ Information/ Service:
(Sub)Menu item Description
Service history View the Service history (log). For each service moment the Service overdue counter is stored. When the
overduecounteris 0hrs,itmeansservicewasdonebeforetheServicereminderwasactive.Thelogisordered
so the most recent service moment is shown first (on top of the list).
Burn hours since last service Shows the numberof burn hours since the last service moment.
Burn hours till service Shows the number of burn hours until serviceis required.
Reset service reminder Reset the Service reminder (and store Service overdue counter in the service history).
Installer must enter the installerpassword first before it can be reset.
5.7 System test
For testing the system at fixed power rates a system test can be activated via the menu. Via the system test the
boiler can be started without CH or DHW being present. The system test has priority.
The following modes are available:
System test mode Description
0 (Not active) System test mode not active
1 (Fan only) The f
a
n is forced to run at maximum speed without starting the burner
2 (Lowpower) The burner starts and after the ignition period has finished
the burner stays at low power
3 (Ignition power) The burner starts and stays at ignition power
4 (High power) The burner starts and after the ignition period has finished
the burner stays at high power
5 (High power limited) The burner starts and after the ignition period has finished
the burner stays at high power limited by theCH max. power parameter
6 (High limit error test) Simulates the Max_Temp_Error
7 (Low Water Cut Off 1 error test) Simulates theLWCO_1_Error
8 (Low Water Cut Off 2 error test) Simulates theLWCO_2_Error
Before running the system test modes first check if the heat can also be dissipated. Note that during this mode the
supply temperature can be raised above 203 ºF (95 ºC). When this temperature is reached the burner will switch OFF.
When the supply temperature cools down to 194 ºF (90 ºC) the burner will start again.
During the system test the general and CH pump will be ON.
As the boiler will run at fixed power rates there is no setpoint control active.
Also the flame recovery is not active during system test demand. All other safety functions remain active.
The system test automatically stops after 10 minutes, after this the system continues with normal demand handling.
When the system test mode is changed during an active system test, the 10 minute timer is reloaded.

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FAX: [phone] • Canada: Slant/Fin LTD/LTEE , Mississauga, Ontario
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