Slant/Fin VGH-299-CH Manual
E93.1601EN032C
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 ...........................................6
2.0 INTRODUCTION....................................................8
3.0 TECHNICAL DATA ..............................................................9
4.0 BOILER DIMENSIONS ............................................13
5.0 ACCESSORIES AND UNPACKING .........................16
6.0 INSTALLATION LOCATION ......................................17
7.0 CONNECTIONS.......................................................20
8.0 CIRCULATOR CHARACTERISTICS .......................29
9.0 FLUE GAS AND AIR SUPPLY SYSTEM ................ 32
10.0 CASCADING APPLIANCE .................................... 54
11.0 ELECTRICAL INSTALLATION ..................................56
12.0 BOILER CONTROLLER AND DISPLAY ...................64
13.0 TEMPERATURE PROTECTION ........................... 86
14.0 ERROR INFORMATION............................................86
15.0 CASCADING SYSTEM SETUP............................. 93
16.0 SYSTEM TEST.....................................................98
17.0 COMMISSIONING THE BOILER...........................99
18.0 ADJUSTING AND SETTING THE BOILER ......... 101
19.0 INSPECTION,MAINTENANCEANDSERVICE...108
20.0 USER INSTRUCTIONS ...................................... 118
21.0 INSTALLATION EXAMPLES............................... 118
22.0 SPARE PARTS ................................................... 123
Heating Contractor
Boiler Model Number
Address
Boiler Serial Number
Phone Number
Installation Date
This manual must be left
with owner and must be
hung on or adjacent to
the boile
r
fo
r
reference.
INSTALLATION AND SERVICE MANUAL
- Do not store or use gasoline or
other flammable vapors and
liquids in the vicinity of this or
any other appliance.
California Proposition 65 Warning: This product contains chemicals known to the State
of California to cause cancer, birth defects, or other reproductive harm.
- WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use
any phone in your building.
•
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 department.
- Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
WARNING:
If the information in
this manual is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or loss of life.
E93.1601EN032.C VGH installation manual
2
TABLE OF CONTENTS
1
SAFETY GUIDELINES ....................................................................................................................................................6
2
INTRODUCTION ..............................................................................................................................................................8
E
XPLANATIONS
...................................................................................................................................................... 8
M
AINTENANCE AND INSPECTION
.............................................................................................................................. 8
F
OR INSTALLATIONS IN THE
C
OMMONWEALTH OF
M
ASSACHUSETTS
........................................................................... 8
3
TECHNICAL DATA VGH BOILERS................................................................................................................................9
F
UNCTIONAL INTRODUCTION
................................................................................................................................... 9
L
OCATION OF VERSION NUMBERS
............................................................................................................................ 9
T
ECHNICAL SPECIFICATIONS DATASHEET
............................................................................................................... 10
H
IGH ALTITUDE OPERATION
. ................................................................................................................................. 11
AHRI
S
PECIFICATIONS
........................................................................................................................................ 12
4
BOILER DIMENSIONS ..................................................................................................................................................13
VGH
299
CH ..................................................................................................................................................... 13
VGH
399
CH ..................................................................................................................................................... 14
VGH
500
CH ..................................................................................................................................................... 15
5
ACCESSORIES AND UNPACKING .............................................................................................................................16
O
PTIONAL
A
CCESSORIES
..................................................................................................................................... 16
U
NPACKING
......................................................................................................................................................... 16
6
INSTALLATION LOCATION OF THE VGH ..................................................................................................................17
I
NSTALLATION
C
LEARANCES
................................................................................................................................. 17
B
OILER
I
NSTALLATION
L
OCATION
R
EQUIREMENTS
:................................................................................................. 18
M
OUNTING THE BOILER
........................................................................................................................................ 19
7
CONNECTIONS .............................................................................................................................................................20
B
OILER CONNECTIONS
......................................................................................................................................... 20
G
AS PIPE CONNECTION
........................................................................................................................................ 20
7.2.1
Gas line connection.............................................................................................................................20
C
ONDENSATE DRAIN CONNECTION
........................................................................................................................ 21
F
LOW AND RETURN CONNECTIONS
........................................................................................................................ 22
T
HE EXPANSION VESSEL
....................................................................................................................................... 22
P
RESSURE RELIEF VALVE
..................................................................................................................................... 22
NON-R
ETURN VALVE
.
(299
&
399) ...................................................................................................................... 23
P
RIMARY
S
ECONDARY
P
IPING
. ............................................................................................................................. 23
C
IRCULATOR FUNCTIONALITY
................................................................................................................................ 23
F
ROST PROTECTION
............................................................................................................................................. 23
I
NSTALLING A STRAINER AND
/
OR DIRT SEPARATOR
.................................................................................................. 23
W
ATER QUALITY
.................................................................................................................................................. 24
U
SE OF GLYCOL
................................................................................................................................................... 24
C
HEMICAL WATER TREATMENT
.............................................................................................................................. 25
U
NDER FLOOR HEATING
....................................................................................................................................... 26
F
LUSH THE SYSTEM WITH FRESH WATER
................................................................................................................ 26
P
LASTIC PIPING IN THE HEATING SYSTEM
............................................................................................................... 26
A
UTOMATIC AIR PURGING OF THE HEAT EXCHANGER
............................................................................................... 26
A
UTOMATIC
F
EED
V
ALVE
..................................................................................................................................... 27
W
ATER PRESSURE
............................................................................................................................................... 27
I
NSTALLATION EXAMPLES
...................................................................................................................................... 28
7.21.1
Example of a normal single boiler heating circuit with low loss header (preferable) .........................28
7.21.2
Example of a multiple boiler heating circuit with low loss header ......................................................28
8
CIRCULATOR CHARACTERISTICS ............................................................................................................................29
H
YDRAULIC GRAPHS
............................................................................................................................................ 29
8.1.1
Boiler resistance graph VGH 299 CH .................................................................................................29
8.1.2
Boiler resistance graph VGH 399 CH .................................................................................................29
8.1.3
Boiler resistance graph VGH 500 CH .................................................................................................30
M
INIMUM REQUIRED CIRCULATOR HEAD
................................................................................................................. 30
M
ODULATING CIRCULATOR FOR
CH
DEMAND
.......................................................................................................... 30
M
ODULATING CIRCULATOR MODES
........................................................................................................................ 30
8.4.1
Delta temperature modulation.............................................................................................................31
8.4.2
PID calculation scaling ........................................................................................................................31
C
IRCULATOR
:
MAXIMUM ELECTRICAL POWER
.......................................................................................................... 31
E93.1601EN032.C VGH installation manual
3
9
FLUE GAS AND AIR SUPPLY SYSTEM .....................................................................................................................32
G
ENERAL VENTING
. ..............................................................................................................................................32
9.1.1
Vent sizing. .........................................................................................................................................32
9.1.2
Vent and air inlet resistance table ......................................................................................................33
V
ENT AND AIR INTAKE PIPE MATERIAL
.....................................................................................................................33
9.2.1
Approved manufacturers ....................................................................................................................34
PVC/
CPVC .......................................................................................................................................................34
9.3.1
Instructions for working with cementing PVC/ CPVC pipe connections: ...........................................35
P
OLYPROPYLENE
.................................................................................................................................................36
9.4.1
Flexible polypropylene ........................................................................................................................37
9.4.2
Stainless steel vent.............................................................................................................................37
S
EALED
C
OMBUSTION
A
IR SUPPLY
........................................................................................................................38
9.5.1
Combustion air quality ........................................................................................................................38
9.5.2
Air supply through humid areas.......................................................................................................... 38
9.5.3
Air intake/vent connections :...............................................................................................................38
9.5.4
Air inlet pipe materials ........................................................................................................................39
R
OOM AIR
............................................................................................................................................................40
9.6.1
Air contamination ................................................................................................................................40
P
ROPER VENT INSTALLATION AND TYPE OF GAS VENT OR VENT CONNECTOR
. ............................................................41
I
NSTALL VENT AND COMBUSTION AIR PIPING
............................................................................................................42
R
EQUIREMENTS FOR INSTALLATION IN
C
ANADA
.......................................................................................................42
D
IRECT VENTING OPTIONS
.....................................................................................................................................43
W
ALL
(H
ORIZONTAL
)
DIRECT VENTING
. ..................................................................................................................45
9.11.1
Vent/air termination - wall ...................................................................................................................45
9.11.2
Determine Location.............................................................................................................................45
R
OOF
(V
ERTICAL
)
DIRECT VENTING
. ......................................................................................................................50
9.12.1
Vent/air termination – vertical .............................................................................................................50
9.12.2
Determine location..............................................................................................................................50
10
CASCADING..................................................................................................................................................................54
A
PPLIANCE
..........................................................................................................................................................54
10.1.1
Calculation VGH 299 & 300 (Valid for parts supplied by Duravent (M&G)). .....................................54
10.1.2
Terminals equivalent feet ...................................................................................................................54
E
XISTING
C
OMMON
V
ENTING
G
UIDELINES
..............................................................................................................55
11
ELECTRICAL INSTALLATION.....................................................................................................................................56
G
ENERAL
.............................................................................................................................................................56
C
ONNECTION MAINS SUPPLY
.................................................................................................................................56
E
LECTRICAL CONNECTIONS
...................................................................................................................................56
E
XPLANATION OF THE LOW VOLTAGE CONNECTIONS
................................................................................................57
E
XPLANATION OF THE HIGH VOLTAGE CONNECTIONS
. ..............................................................................................58
L
ADDER
/L
OGIC
D
IAGRAM
......................................................................................................................................59
E
LECTRICAL SCHEMATICS
.....................................................................................................................................60
S
ENSOR AVAILABILITY
...........................................................................................................................................62
NTC
SENSOR CURVE
............................................................................................................................................62
P
ROGRAMMABLE IN
-
AND OUTPUTS
........................................................................................................................63
12
BOILER CONTROLLER AND DISPLAY......................................................................................................................64
D
ISPLAY AND BUTTONS
.........................................................................................................................................64
12.1.1
Display icons.......................................................................................................................................64
S
CREENS AND SETTINGS
.......................................................................................................................................65
12.2.1
Set CH setpoint/ DHW setpoint directly via the Status overview.......................................................65
12.2.2
Entering the menu ..............................................................................................................................65
12.2.3
Protected menu items.........................................................................................................................66
12.2.4
De-aeration Sequence........................................................................................................................67
12.2.5
Language settings ..............................................................................................................................67
B
OILER HISTORY
..................................................................................................................................................67
E
RROR LOGGING
..................................................................................................................................................67
S
ERVICE REMINDER
..............................................................................................................................................68
12.5.1
Service overdue logging .....................................................................................................................68
12.5.2
Reset the service reminder.................................................................................................................68
12.5.3
Menu’s and parameters ......................................................................................................................69
G
ENERAL
.............................................................................................................................................................69
12.6.1
Circulator start exercise every 24 hours.............................................................................................69
12.6.2
Frost protection ...................................................................................................................................69
12.6.3
Flue temperature protection ...............................................................................................................70
12.6.4
Appliance selection.............................................................................................................................70
I
GNITION CYCLE
....................................................................................................................................................70
12.7.1
Flame detection ..................................................................................................................................71
12.7.2
Flame recovery ...................................................................................................................................71
E93.1601EN032.C VGH installation manual
4
C
ONTROL FUNCTIONS
.......................................................................................................................................... 71
12.8.1
Room thermostat only; CH mode 0 (Default setting)..........................................................................71
12.8.2
CH with an outdoor temperature reset and thermostat; CH mode 1.................................................72
12.8.3
CH with constant circulation system outdoor reset; CH mode 2 .......................................................74
12.8.4
CH with constant circulation and permanent heat demand; CH mode 3 ...........................................74
12.8.5
Central Heating with analog input control of setpoint; CH mode 4 ....................................................75
12.8.6
CH with analog input control of power output; CH mode 5 ................................................................76
D
EMAND FOR
D
OMESTIC
H
OT
W
ATER
................................................................................................................... 77
12.9.1
No Domestic Hot Water; DHW mode 0 ..............................................................................................77
12.9.2
DHW Storage with sensor; DHW mode 1...........................................................................................77
12.9.3
DHW Storage with thermostat; DHW mode 2 ....................................................................................78
12.9.4
Instantaneous water heating with plated heat exchanger; DHW mode 3 ..........................................78
12.9.5
Anti-legionella protection.....................................................................................................................79
12.9.6
Display menu structure summary. ......................................................................................................80
13
TEMPERATURE PROTECTION ...................................................................................................................................86
14
ERROR INFORMATION. ...............................................................................................................................................86
B
OILER HISTORY
.................................................................................................................................................. 86
L
OCKOUT CODES
................................................................................................................................................. 87
B
LOCKING CODES
................................................................................................................................................ 90
W
ARNINGS
.......................................................................................................................................................... 92
15
CASCADING ..................................................................................................................................................................93
S
YSTEM SETUP
.................................................................................................................................................... 93
B
OILER CASCADE COMMUNICATION SETUP
............................................................................................................. 93
15.2.1
Setting the boiler address ...................................................................................................................94
15.2.2
E2prom address selection through e2prom setting............................................................................94
15.2.3
Cascade – Heating only Managing boiler...........................................................................................94
15.2.4
Cascade – Domestic Hot Water Settings ...........................................................................................95
15.2.5
Cascade – DHW priority......................................................................................................................95
15.2.6
Cascade – Start/stop sequence..........................................................................................................95
15.2.7
Cascade – Power balance mode ........................................................................................................96
C
ASCADE
–
B
OILER ROTATION
.............................................................................................................................. 96
15.3.1
Next depending to start selection .......................................................................................................96
C
ASCADE
E
RROR HANDLING
................................................................................................................................ 97
15.4.1
Cascade Frost protection ....................................................................................................................97
15.4.2
Emergency mode ................................................................................................................................97
15.4.3
Loss of cascade communication.........................................................................................................97
16
SYSTEM TEST...............................................................................................................................................................98
17
COMMISSIONING THE BOILER...................................................................................................................................99
F
IRST
:
FLUSHING THE BOILER WITH WATER
............................................................................................................ 99
S
ECOND
:
FILLING
&
VENTING THE BOILER AND THE SYSTEM
..................................................................................... 99
T
HIRD
:
CHECK THE WATER FLOW
........................................................................................................................... 99
M
OUNTING
C
ONDENSATE
T
RAP
............................................................................................................................ 99
C
HECKING GAS PRESSURE
................................................................................................................................. 100
F
IRING FOR THE FIRST TIME
................................................................................................................................ 100
18
ADJUSTING AND SETTING THE BOILER ............................................................................................................... 101
I
NTRODUCTION
.................................................................................................................................................. 101
18.1.1
Combustion table ............................................................................................................................. 101
18.1.2
Setting screws venturi- and gas valves: drawings........................................................................... 102
A
DJUSTMENT PROCEDURES
................................................................................................................................ 103
V
ENTURI
R
EPLACEMENT
A
DJUSTMENT
................................................................................................................ 103
C
ONVERSION FROM NATURAL GAS TO PROPANE
................................................................................................... 104
S
TART
U
P
C
HECKLIST
........................................................................................................................................ 106
19
INSPECTION, MAINTENANCE AND SERVICE........................................................................................................ 108
G
ENERAL
.......................................................................................................................................................... 108
S
AFETY INSTRUCTIONS
C
RYSTALLINE
S
ILICA
....................................................................................................... 108
I
NSPECTION
,
MAINTENANCE AND SERVICE
............................................................................................................ 109
19.3.1
Mounting the burner door................................................................................................................. 116
M
AINTENANCE
C
HECKLIST
................................................................................................................................. 117
20
USER INSTRUCTIONS............................................................................................................................................... 118
21
INSTALLATION EXAMPLES ..................................................................................................................................... 118
22
SPARE PARTS. .......................................................................................................................................................... 123
E93.1601EN032.C VGH installation manual
5
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,
serious 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, operation or 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
E93.1601EN032.C VGH installation manual
6
1 SAFETY GUIDELINES
E93.1601EN032.C VGH installation manual
7
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 into
operation. A qualified service technician must be notified of the issue. The boiler may
only be reset by a qualified service technician 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 the circulator. Instead, shut off the gas supply at a location
external to the appliance.”
Slant/Fin 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
service 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
materials) or death. Refer to Section 19 for information on handling instructions and
recommended 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 supplied instructions before installing, servicing, or removing this boiler.
This boiler contains materials that have been identified as carcinogenic, or possibly
carcinogenic, to humans).
CAUTION
DANGER
NOTICE
WARNING
WARNING
DANGER
WARNING
E93.1601EN032.C VGH installation manual
8
2 INTRODUCTION
This manual is written for the Installer.
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.
Explanations.
VGH = Condensing Boiler
DHW = Domestic Hot Water
CH = Central Heating (for central heating purposes and/or indirect hot water)
BCU = burner control unit
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)
Maintenance and inspection
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.
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 the intake 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.
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
E93.1601EN032.C VGH installation manual
9
3 TECHNICAL DATA VGH BOILERS
Functional introduction
The VGH boilers are central heating boilers with a maximum high efficiency. Such a performance can be reached
by, amongst other things, using a special heat exchanger made of stainless steel. This allows the flue gases to
cool down below the condensation point, and so release extra heat. This has an immediate positive impact on the
efficiency.
The VGH boiler is set for Natural gas.
Fuel used must have Sulphur rates with a maximum annual peak over a short period of time of 150 mg/m
3
(110
ppm) and an annual average of 30 mg/m
3
. (22 ppm average)
Boiler control includes:
Cascade control for up to sixteen boilers
Remote operation and heat demand indication from each boiler
Weather compensation control – Outdoor reset.
Indirect tank control
Connections for:
On/Off thermostat or modulating thermostat
0-10 VDC remote flow temperature (set point) control
0-10 VDC remote boiler input control
Outdoor temperature sensor
External indirect tank circulator or diverter valve
Boiler circulator
PWM control for external boiler circulator.
System circulator
External flow switch or external safety device.
Modbus
External system sensor
DHW indirect sensor or aquastat.
External I
g
nition coil
Location of version numbers
Burner Controller Hardware Version
– To be found on the second line of the white sticker on the side of the burner controller.
e.g. 957MN15_3Rh4a
Burner Controller Software Versions
– Press the menu button , go to Information and then to Software Versions.
Information
Software Versions
Boiler Status
Boiler History
Error Log
i
Software Versions
Display [63EF 83BC]
Boiler [5C79 14A9]
Device Group 900MN
Picture 3
Picture 3.1
Picture 3.2
E93.1601EN032.C VGH installation manual
10
Technical specifications datasheet
GENERAL
Boiler category - IV
Model boiler VGH 299 CH VGH 399 CH VGH 500 CH
Dimensions (h x w x d) Inch (mm) 33.3 x 17.3 x 20.9 (845 x 440 x 530)
Water content Gallon
(liter) 1.77 (6.7) 2.19 (8.3) 2.74 (10.4)
Weight (empty) Lbs (kg) 174 (79) 183 (83) 187 (85)
Flow/return connection inch NPT 1 ½” NPT 1 ½” NPT 1 ½”
Gas connection inch NPT 1” NPT 1” NPT 1”
Flue connection Inch (mm) 4” (100) 4” (100) 6” (150)
GAS CONSUMPTION Values min-max:
Natural gas ft
3
/h
m
3
/h
54.8 – 274
1.6 – 7.8
74.3 – 368
2.1 – 10.4
91.1 – 465
2.6 – 13.2
Propane
1
ft
3
/h
m
3
/h
23.6 – 118
0.7 – 3.3
32.0 – 159
0.9 – 4,5
39.2 – 200
1.1 – 5.7
Gas supply
pressure
nominal
2
Nat. gas Inch W.C./
(mbar) 7.0 (17.4)
Propane Inch W.C./
(mbar) 11.0 (27.4)
NOTES
1
Using propane, maximum fan speed needs to be reduced
2
Min. and max. gas supply pressures
p nom inch W.C. (mbar) p min inch W.C. (mbar) p max inch W.C. (mbar)
Natural gas 7.0 (17.4) 3.5 (8.7) 10.5 (26.2)
Propane 11.0 (27.4) 8.0 (19.9) 13.0 (32.4)
Table 3. 1
E93.1601EN032.C VGH installation manual
11
NOTICE
Model boiler VGH 299 CH VGH 399 CH VGH 500 CH
CO
2
flue gas
3
Low fire – High fire
Natural gas % 9.8 – 9.2
Propane % 11.0 - 10.4
O
2
flue gas
3
Low fire – High fire
Natural gas % 3.7 – 4.7
Propane % 4.1 - 5.0
Flue gas temperature at
combustion air temperature =
70 °F
(
20 °C
)
°F (°C) 120 – 180 (50 – 80)
Available pressure for the flue
system
4
Inch W.C (Pa) 0.8
(200)
INSTALLATION
Resistance
boiler
T = 20 F
ft.head (m.W.C.)
26 (7.9) 31 (9.4) 29 (8.8)
T = 35 F
ft.head (m.W.C.)
9 (2.7) 10 (3.0) 10 (3.0)
Pressure boiler min-max. psi (bar) 15.0 - 87.0 (1.0 - 6.0)
Max. supply temperature °F (°C) 185 (85)
ELECTRIC
Maximum power consumption W 180 200 280
Power supply V/Hz 120 / 60
Protection class - IPX4D
NOTES
3
CO
2
or O
2
of the unit measured/set without the boiler front panel in place
4
Maximum allowed combined resistance of flue
g
as and air suppl
y
pipin
g
at hi
g
h fire
High altitude operation.
High Altitude Operation
The boiler is designed to operate at its maximum listed capacity in installations at elevations less than or equal to 2000 ft
(610 m) above Sea Level. Since the density of air decreases as elevation increases, maximum specified capacity will be
de-rated for elevations above 2000 ft (610 m) in accordance with the table underneath.
Elevations 2000 ft (610 m
)
3000 ft (914 m) 4000 ft (1219 m) 4500 ft (1372 m) Above 4500 ft (1372 m)
In USA
No de-rate De-rate by 4 % De-rate by 8 % De-rate by 10 % De-rate 4% per 1000 ft.
In Canada
No de-rate De-rate by 10% De-rate by 10 % De-rate by 10 % De-rate 4% per 1000 ft.
In USA and Canada, de-rate by 4% extra for every 1000 ft. above 4500 ft.
How to calculate De-rating at intermediate elevations for US:
Elevation between:
2000 and 3000 ft : (New value – 2000) x 0.004 Example: Elevation is 2600 ft. De-rating is (2600-2000)x0.004 = 2.4 %
3000 till 4000 ft : ((New value – 3000) x 0.004)+4 Example: Elevation is 3700 ft. De-rating is ((3700-3000)x0.004)+4 = 6.8 %
4000 till 4500 ft : ((New value – 4000) x 0.004)+8 Example: Elevation is 4200 ft. De-rating is ((4200-4000)x0.004)+8 = 8.8 %
Above 4500 ft : ((New value – 4500) x 0.004)+10 Example: Elevation is 4800 ft. De-rating is ((4800-4500)x0.004)+10 = 11.2 %
How to calculate De-rating at intermediate elevations for Canada:
Elevation between:
2000 till 4500 ft : All values derate by 10% Example: Elevation is 3600 ft. De-rating = 10 %
Above 4500 ft : ((New value – 4500) x 0.004)+10 Example: Elevation is 7600 ft. De-rating is ((7600-4500)x0.004)+10 = 22.4 %
Table 3. 2
Combustion – At elevations above
2000 ft (610 m)
, the combustion of the appliance must be checked with
a calibrated (altitude corrected) combustion analyzer to ensure safe and reliable operation. No orifices or
high-altitude kits are needed, since the 1:1 Gas/Air ratio of the gas valve and the venturi will respond
automatically to reduced air pressure.
It is the Installers responsibility to check the combustion of the appliance. Failure to follow these
instructions may result in property damage, serious injury, or death.
Table 3. 3
E93.1601EN032.C VGH installation manual
12
AHRI Specifications
VGH series
Model
number
Input, MBH
1
Output
1,2
MBH
AHRI
Net Ratings
Water, MBH
AFUE
%
Thermal
Efficiency,
%
Combustion
Efficiency,
%
Min Max
VGH 299 CH 59.0 295 274 238 95.1 - -
VGH 399 CH 80.0 396
3
378 329 - 95.5 95.4
VGH 500 CH 98.0 500 476 414 - 95.1 94.5
1ListedInputandOutputratingsareatminimumventlengthsatSeaLevel.Numberswillbelowerwithlonger
ventingand/oraltitudesgreaterthan2000feet[610m].
2 Output means ‘Heating Capacity’ for VGH 299 CH, and ‘Gross Output’ for VGH 399 CH and VGH 500
CH
3ThemaximuminputwhenoperatingonLP‐Gasis397MBH.
4RatingshavebeenconfirmedbytheHydronicsSectionofAHRI.
5Theratingsandefficienciesarebasedonstandardtestproceduresandcalculationmethodsasprescribedby
theUnitedStatesDepartmentofEnergy.
6AsanENERGYSTAR®Partner,SlantFinhasdeterminedthatthesefiringratesmeettheENERGYSTARguidelines
forenergyefficiency.
Table 3. 4
E93.1601EN032.C VGH installation manual
13
4 BOILER DIMENSIONS
VGH 299 CH
Connections VGH 299 CH
A Supply NPT 1½”
B Return NPT 1½”
C Condensate Flexible hose Ø 1.06” (26.9 mm)
D Gas NPT 1”
Table 4. 1
Figure 4. 1
E93.1601EN032.C VGH installation manual
14
VGH 399 CH
Table 4. 2
Connections VGH 399 CH
A Supply NPT 1½”
B Return NPT 1½”
C Condensate Flexible hose Ø 1.06” (26.9 mm)
D Gas NPT 1”
Figure 4. 4
E93.1601EN032.C VGH installation manual
15
VGH 500 CH
Connections VGH 500 CH
A Supply NPT 1½”
B Return NPT 1½”
C Condensate Flexible hose Ø 1.06” (26.9 mm)
D Gas NPT 1”
Table 4. 3
Figure 4.3
E93.1601EN032.C VGH installation manual
16
5 ACCESSORIES AND UNPACKING
Optional Accessories
Depending on the selected controlling behavior for the central heating system and/or the optional use of an indirect
tank, the following items are available as accessories.
Item Slant Fin part number
Asme pressure 75 psi relief valve. 432552000
External flow temperature sensor for behind the low loss header: 10kOhm@77°F 81 7109 000
Indirect tank sensor: 10kOhm@77°F (type B3977) 81 7110 000
Standard Circulator VGH 299 81 7117 000
Standard Circulator VGH 399 & VGH 500 81 7118 000
High Efficiency ECM Circulator VGH 299/399/500 81 7116 000
IP module 81 7111 000
Software + interface cable for programming the boiler with a computer/laptop (S022.500.015) SF PN
T.B.D
External Ignition transformer 81 7115 000
External Ignition BCU (S165030.032) SF PN
T.B.D
Propane kit for VMS Venturi hole Ø 6.2 VGH 299 81 7112 000
Propane kit for VMS Venturi hole Ø 6.7 VGH 399 81 7113 000
Propane kit for VMS Venturi hole Ø 7.2 VGH 500 81 7114 000
Air Filter Kit VGH 299/399 81 7121 000
Air Filter Kit VGH 500 81 7122 000
Safety Flow Switch Kit 81 7106 000
French I&O Manual 81 7124 000
French User Manual 81 7125 000
Gas pressure kit VGH 500
If protection from gas pressure faults is demanded this kit is available.
The kit consists of two gas pressure switches, with connections to the gas valve
and cabling to connect to the burner controller. The gas pressure switches are
factor
y
set to the values for natural
g
as.
81 7105 000
Unpacking
The VGH boiler will be supplied with the following documents and accessories:
No Part number Description Quantity
1 -- “Installation, user and service instructions” manual. 1
2 400262000 ASME pressure 50 psi relief valve. (packed into an additional box) 1
3 81 7051 000 Wall bracket with locking plate and bolts 1
4 81 7049 000 Spare nuts for mounting the burner plate
(
in a ba
g
attached to the front of the
g
as valve
)
3
5 81 7030 000 Spare fuses for the boiler control
(
At the burner controller
)
1
6 81 7028 000 Bottom part of the condensate drain assembly 1
7 81 7108 000 Outdoor (air) temperature sensor: 10kOhm@77°F (packed into an additional
box
)
1
8 81 7119 000 CPVC Starter piece 2 feet (VGH 399 only) 1
9 910373061 Temperature and pressure gauge 1
10 400201000 Boiler drain 1
11 81 7123 000 Gas shut off ball valve 1
After delivery, always check the boiler package to see if it is complete and without any defects. Report any defects
or missing parts immediately to your supplier.
Table 5. 1
Table 5. 2
E93.1601EN032.C VGH installation manual
17
CAUTION
6 INSTALLATION LOCATION OF THE VGH
Installation Clearances
On all sides of the boiler at least 2” of clearance must be applied to walls or wall units, 14” above the top side of
the boiler and 10” from the bottom of the boiler.
Model No.
VGH
299-500
Clearances to wall, ceilin
g
and floo
r
Distances
–
inches
A: Front B: Top C: Sides D: Back E: Bottom
Minimum service
Clearances 6 12 2 0 10
Recommended
Service clearances 25 14 20 0 30
Clearances from combustible materials
1. Hot water pipes—at least 1/4" (6 mm) from combustible materials.
2. Vent pipe
–
at least 1"
(
25 mm
)
from combustible materials.
The installation area/room must have the following provisions:
120 V - 60 Hz power source socket with ground.
Open connection to the sewer system for draining condensing water.
A wall or stand to properly support the weight of the boiler.
Depending on the current of the used circulator apply a circuit breaker up to a maximum of 15 A.
The installation of the Slant Fin gas appliance must conform to the
requirements of this manual,
your local authority and the CAN/CGA B149 Installation Codes. Where
required by the authority
having jurisdiction, the installation must conform to the standard for Controls and Safety Devices
fo
r
Automaticall
y
Fired Boilers ANSI/ASME CSD-1
The wall used for mounting the boiler must be able to hold the weight of the boiler, piping and
fittings, and the weight of the water. If not, it is recommended to mount the boiler by means of
a
(
optional cascade
)
stand.
The boiler must NOT be installed on or near carpeting.
Table 6. 1
Figure 6. 2
Figure 6. 1
NOTICE
Ceiling
Wall
Circulator
E93.1601EN032.C VGH installation manual
18
Boiler Installation Location Requirements:
The installation of this boiler when installed using room air must comply to NFPA 54.
The flue gas pipes must be connected to the outside wall and/or the outside roof. (“Flue gas instructions”
manual.)
The installation area must be dry and frost-free.
The boiler has a built-in fan that will generate noise, depending on the total heat demand. The boiler
location must minimize any disturbance this might cause. Preferably mount the boiler on a solidly
constructed wall or stand.
There must be sufficient lighting available in the boiler room to work safely on the boiler.
When a boiler is positioned at the highest point of the installation, the supply and return pipes must first
protrude 20” above the top of the boiler, before these pipes go to the installation side. In other words, the
water level must always be 20” above the top of the boiler and an automatic air vent must be installed in
the supply or return pipe. It is recommended to install a low water cut off above the boiler, when the boiler
is installed above the system or at the highest point in the installation.
Do not install the boiler in a location where it will be exposed to temperatures 100 °F or higher.
Do not install the boiler in a location where it will be exposed to high levels of humidity and moisture or
where condensation might fall onto the boiler.
Make sure there is an open connection with the sewer to drain the condensate. This connection must be
lower than the condensate drains level of the boiler, if not a condensate pump will be required.
Do not locate the boiler in an area which contains corrosive or other contaminants as outlined in section
9.6 tables 9-12 and 9-13
When considering installation locations consideration must be given to the combustion air supply
whether using indoor air or sealed combustion.
Do not allow the combustion air to come from a source or area which contains corrosive or other
contaminants as outlined in section 9.6 tables 9-12 and 9-13
The boiler must be positioned and installed by a qualified installer or the gas company in accordance with all
applicable standards, local codes and regulations. Commissioning of the boiler must be done by a qualified
installer or technician, who is trained for this type of boiler.
In the Commonwealth of Massachusetts this boiler must be installed by a licensed Plumber or Gas Fitter.
E93.1601EN032.C VGH installation manual
19
Mounting the boiler
Before mounting and installing the boiler the following connections must be considered:
Flue gas system and the flue gas pipe connections
Air supply system and connections
Supply and return pipe connections
Condensate and pressure relief valve drainage
Power supply (preferably the power connection positioned above the boiler)
Gas pipe sizing.
Automatic Air Vent Connection.
Needed tools : wrench 13 and 10 mm
All lines/piping must be mounted free of tension. The weight of the installation components must
be supported separately from the boiler so there will be no standing forces on the connections.
This might influence the mounting position of the boiler.
Determine the position of the boiler by using the included suspension bracket or a suspension frame (when
supplied). While marking the holes, ensure that the suspension bracket or frame is perpendicular, and the boiler
does not lean forward. If necessary, adjust the position with the leveling bolts at the lower rear side of the back
panel (see figure 6.2). When the leveling bolts aren’t sufficient, fill the gap behind the bolts to get the boiler in
position. The boiler position lies between the boiler hanging level and hanging slightly backwards (min. 0.5° - max
1.5°).
The boiler may not lean forward in the mounted position.
Lock the suspension bracket with
the security cover before making
any other connections to the boiler.
This security cover will prevent the
boiler from falling off the bracket.
Don't use excessive force during
the mounting of the boiler
connections.
Figure 6. 2
NOTICE
3. Lock boiler with locking plate
and two bolts
1. Attach mounting bracket to wall
with inclined side facing upwards
suspension
detail
4. Level boiler using
adjusting bolts
2. Suspend
boiler with
suspension
bracket on
mounting
bracket
Slightly backwards (min. 0.5° - max 1.5°)
for the condensate to properl
y
drain
E93.1601EN032.C VGH installation manual
20
7 CONNECTIONS
Boiler connections
1 – Water outlet / Flow
2 – Water inlet / Return
3 – Gas
4 – Condensate trap clean out.
5 – Condensate drain
6 – Automatic air drain.
Gas pipe connection
The gas supply piping must conform to all local codes and regulations and/or National Fuel Gas Code, ANSI
Z223.1/NFPA 54. In Canada refer to CAN/CGA B149.1 installation codes, and local codes for gas piping
requirements and sizing. Pipe size running to the appliance depends on: Length of pipe; Number of fittings;
Maximum input requirement of all gas appliances in the residence. See the gas sizing table below for help when
sizing the gas connection. For information on propane sizing consult your local propane gas supplier.
Schedule 40 Black Steel Pipe in Cubic Feet of Natural Gas per Hour.
(
Based on inlet pressure less than 2 psi, pressure drop of 0.3 W.C. and specific
g
ravit
y
0.6
)
Nominal Pipe
Size
(
In
)
¾” 1” 1¼” 1½” 2”
Len
g
th
(
ft
)
10 273 514 1060 1580 3050
20 188 353 726 1090 2090
30 151 284 583 873 1680
40 129 243 499 747 1440
50 114 215 442 662 1280
60 104 195 400 600 1160
70 95 179 368 552 1090
80 89 167 343 514 989
90 83 157 322 482 928
100 79 148 304 455 877
7.2.1 G
AS LINE CONNECTION
Consult, the gas code to determine gas pipe size. It is required to install a manual shutoff gas valve in front of the
gas pressure regulator to make sure that the gas line can be closed in case of maintenance. The entire piping
system, gas meter and regulator must be sized properly to prevent pressure drop greater than 1 "wc as stated in
the NFPA54. If you experience a pressure drop of greater than 1” w.c., regulator or gas line is undersized.
Slant/Fin recommends a nominal value of 7” to 10” W.C. of gas pressure when using Natural gas and 11 to 13”
W.C. when using LPG, will be available at the boiler gas valve inlet at maximum boiler firing rate. See technical
specifications datasheet for minimum and maximum allowed gas pressures.
When an in-line regulator is used to drop gas pressure from 2 psi to 0.5 psi, it must be located a minimum of 6 ft
from the boiler.
Slant Fin requires a minimum 1” diameter flex hose if flex gas hose is going to be used. Ensure that: the gas line
connection to the appliance does not apply any weight or pressure to the gas valve.
Create an installation layout such that the piping does not interfere with the vent pipe, or any other serviceable
components.
The appliance shall be installed such that the gas ignition system components are protected from water (dripping,
spraying, rain etc.) during installation, operation and servicing.
No appreciable drop in line pressure may occur when any unit (or in the instance of a cascade installation when
all of the installed units).
lights or runs. Use common gas line sizing practices. Make sure the gas pressure is within specification during all
conditions. Always use a pipe-threading compound. Apply sparingly to all male threads, starting at two threads
from the end. Over doping or applying dope to the female end, can result in a blocked gas line.
DO NOT TIGHTEN FITTINGS WITHOUT SUPPORTING THE GAS VALVE, A BACKING WRENCH MUST BE
USED
Figure 7. 1
Table 7. 1
1 2 3 4 5 6
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