IBC SL 35-199 User manual

1
SL 45-260
PROPANE CONVERSION PARTS KIT# P-170B
120-166 R2
DANGER
Check the rating plate of the boiler
to ensure it is congured for the
fuel you are using.
Failure to perform the proper fuel
conversion when required can
result in an immediate hazard.
Operating any IBC boiler using a
fuel other than the fuel listed on
its rating plate is prohibited. If
these instructions are not followed
exactly, a dangerous situation can
result, leading to re, explosion or
production of carbon monoxide,
which may cause property damage,
personal injury, or loss of life.
NOTE
These instructions are to be closely followed, and referenced to the details in
the boiler’s current certied Installation and Operating Instruction Manual.
The above listed modulating boilers are factory re-tested to operate with natural
gas, or propane as ordered. The rating plate will be marked to indicate which fuel
the particular boiler has been set up with. Firing a boiler with a fuel other than what
is listed on the rating plate is prohibited unless the following conversion procedure
is completed by a qualied technician.
The boiler will automatically de-rate the maximum input at a rate of approximately
2% per 1,000’ above 4,500’. The gas valves zero governor will ensure that the
gas:air mixture is not a󰀨ected at altitude.
Important Note: If converting from Propane to Natural Gas - Order Propane
to Natural Gas Conversion Kit, IBC Part# P-223 from your authorized IBC
Distributor.
MODEL NUMBER NATURAL GAS
TO PROPANE
PROPANE TO
NATURAL GAS
SL 35-199 P-224 P-223
SL 45-260 P-170B P-223
Table 1: Fuel Conversion Kits
INCLUDED WITH CONVERSION KIT
(IBC PART# P-170B)
• 1 x 6.8mm Orice, Marked 6.80 – IBC Part #180-044
• 1 x Rating Plate Fuel Overlay - IBC Part# 80-108A
• 1 x Gas Valve Conversion Label - IBC Part# 80-107B
• 1 x Installer Identier Label - IBC Part# 80-171A
• 1 x Instruction Sheet - IBC Part# 120-166 R2
WARNING
This conversion kit shall be installed by a qualied service agency in accordance with the manufacturer’s
instructions and all applicable codes and requirements of the authority having jurisdiction. If the information
in these instructions is not followed exactly, a re, an explosion or production of carbon monoxide may result
causing property damage, personal injury or loss of life. The qualied service agency is responsible for the
proper installation of this kit. The installation is not proper and complete until the operation of the converted
appliance is checked as specied in the manufacturer’s instructions supplied with the kit.

2
SL 45-260
PROPANE CONVERSION PARTS KIT# P-170B
120-166 R2
Refer to the details in the boiler’s current Installation and Operation Manual,
section 3.3 - “COMMISSIONING”, 3.4 “FUEL CONVERSION”
The Low Fire (Zero-o󰀨set) valve adjustment cap on the gas valve has been factory
set. This screw (4mm Hex) must not be tampered with. The Zero-oset
screw is not to be adjusted in the eld. Consult factory for written instructions if
considering eld adjustment of the Low Fire (zero o󰀨set) adjustment.
The High Fire (Gas:Air) ratio adjustment screw (2.5mm Hex) will have to be
adjusted to attain optimum combustion results whenever fuel conversion is
undertaken, however, no mixture adjustment shall be performed unless
done by a qualied technician using properly functioning and calibrated
combustion analyzing equipment. The following procedure must be carried out
by a qualied technician:
MODEL HIGH FIRE LOW FIRE CO MAX
PPM
RANGE TARGET RANGE TARGET
SL 35-199
(Natural Gas) CO2
9.1 – 9.7 9.5 8.4 – 9.0 8.7 150
SL 35-199
(Propane) CO2
10.5 – 11.1 10.8 9.4 – 10.2 9.8 180
SL 45-260
(Natural Gas) CO2
9.1 – 9.7 9.5 8.4 – 9.0 8.7 120
SL 45-260
(Propane) CO2
10.5 – 11.1 10.8 9.4 – 10.2 9.8 150
Table 2: Combustion Test Target Range – CO2
Fuel Conversion Instructions
The following procedure must be carried out by a qualied technician.
1. Ensure you are installing the correct fuel conversion kit for your boiler.
Compare the boiler model number with the Kit# found in table #1. Ensure you
have the correct Orice by checking the Orice size with the Chart on page 3.
2. Ensure the fuel conversion instructions supplied with the fuel conversion kit are
read, understood and followed carefully.
3. The gas supply shall be shut o󰀨 prior to disconnecting the electrical power, and
before proceeding with the conversion. Ensure that the gas supply is turned o󰀨
at the gas shut o󰀨 valve.
4. Using a #25 Torx wrench, undo the 3 venturi mounting screws.
5. Lift the gas valve up and away from the venturi.
6. Insert the orice in to the O-ring and re-seat the gas valve on the venturi.
7. Re-install the 3 venturi mounting screws and tighten.
8. Restore gas supply by opening the gas control valve, and using an approved
leak detection solution, soap test all joints.
9. Carefully follow the procedures on page 3, Combustion Testing and Adjustment
10. Place the conversion labels associated with the new fuel onto the boiler at the
positions indicated page 4 of this Instruction Document.
CAUTION
The gas supply shall be shut o󰀨
prior to disconnecting the electrical
power, before proceeding with the
conversion.
DANGER
A combustion test must be done
by a qualied, trained and licensed
gas tter in order to complete any
fuel conversion.
Making adjustments to the IBC gas
valve without a properly calibrated
gas combustion analyzer and by
persons who are not trained and
experienced in its use is forbidden.
Failure to use an analyzer can
result in an immediate hazard.
Venturi without an orice in an SL 45-
260 Natural Gas boiler. This Natural
Gas model does not use an orice.
Orice inserted for an SL 45-260 boiler
using Propane.

3
SL 45-260
PROPANE CONVERSION PARTS KIT# P-170B
120-166 R2
Combustion Testing and Adjustment
To verify the proper operation of the gas valve in the eld, the following procedure
can be carried out by a qualied technician (diagrams on this page).
Normal ignition system sequence of operation: The boiler control, upon a call
for heat or DHW, will turn on the combustion fan for a 20 second pre-purge, then
energize the spark electrode and gas valve for a 4 second trial for ignition. If the
burner does not light and prove ame, the process is repeated until the burner
lights and ame is detected or after 3 trials for ignition the boiler will lock out and
will need to be manually reset by clearing the error. The boiler will automatically
reset after 60 minutes if no action is taken.
1. Turn o󰀨 the boiler’s gas shut o󰀨 valve. With a small (1/8” or 3 mm) at
screwdriver, open the inlet gas supply pressure test port by turning its center-
screw 1 full turn counterclockwise. Attach a manometer to the pressure test
port and turn on gas to appliance. Static manometer reading should be ideally
7” w.c., for Natural Gas and 11” w.c. for Propane. Minimum and maximum
static pressure should be between 5” and 14” w.c. Monitor pressure throughout
the comissioning procedure. Pressure may droop up to 1” to 2” w.c. at high
re. Outlet Pressure (Manifold Pressure) should be between -0.04” w.c. and
0.00” w.c. with a target of -0.02” w.c. NOTE: The outlet pressure should
only be measured with an accurate digital manometer. Consult factory before
considering eld adjustment.
2. Set a load as manual control and run the boiler at 260MBH. This load should
be large enough to allow the boiler to operate at high re for 10 plus minutes.
Take note of what the load was set for before you change it to manual control.
3. Turn the High Fire (Gas : Air Ratio Adjustment) screw 1-1/4 turns clockwise
using a 2.5mm hex key.
4. With a combustion analyzer probe in the ue gas test port, turn the High Fire
(Gas : Air Ratio Adjustment) screw clockwise (see diagrams on this page) to
achieve results. This screw o󰀨ers very ne adjustment, and may require several
turns. Turning the High Fire (Gas : Air Ratio Adjustment) screw clockwise will
lean out the ame. NOTE: Clock the gas meter to conrm full maximum rating
plate input. Check the measured results with Table 3 - High Fire.
5. Set the heat out value in manual mode to 45MBH.
6. While the boiler is at Low Fire, compare the combustion reading against the
readings in Table 2. The readings should be within the range listed in Table 2.
7. Restore the load to the previous load type. All the programmed settings will
be restored and the load will operate as it was previously. Conrm a smooth
ignition sequence.
8. Turn o󰀨 the gas supply at
the gas shut o󰀨 valve and
disconnect the power to
the boiler. Disconnect the
manometer. Close the gas
supply test port screw by
turning clockwise. Turn on the
gas supply shut o󰀨 valve and
test for gas leaks. Restore
power to the boiler.
Orice and O-ring
PROPANE ORIFICE CHART
MODEL
NUMBER
ORIFICE
SIZE
SL 45-260 6.8 mm
MODEL
NUMBER
HIGH FIRE
INPUT
NATURAL GAS OR PROPANE
SL 45-260 260 MBH
Table 3: Rated input of a converted boiler
Clocking the Meter
(Natural Gas)
1. Turn o󰀨 all other appliances and
pilots
2. Turn on the boiler and set the
boiler to high re. Ensure the
boiler has a large load to heat so
that the boiler will not shut o󰀨.
3. With a Stop-Watch, record
the number of seconds for the
smallest dial to make 1 full
revolution.
4. CFH = (3600 x Dial Size) /
Seconds
5. CFH x 1000 (check local Btu
content) = Input Btu’s
NOTE:
• For 2 PSI meters multiply CFH x
1.097
• For Metric meters multiply CFH x
35.3
• For 2 PSI metric meters multiply
CFH x 1.097 x 35.3
• For Altitude above 4,500’ deduct
2% per 1,000' of altitude from the
Input Btu’s
Gas Valve Adjust

4
SL 45-260
PROPANE CONVERSION PARTS KIT# P-170B
120-166 R2
NOTE
The Installer must ll in the
information and a󰀩x the included
fuel conversion labels to the boiler
in the positions indicated after the
conversion is completed
80-172A
Address/Adresse
Installation Company
Entreprise d'installation
Kit No.
Trousse No.
Better
Boilers
THIS BOILER HAS BEEN CONVERTED FROM
PROPANE TO NATURAL GAS
This boiler was converted on day / month / year
Cette chaudière a été convertie le jour / mois / année
Upon completion of the fuel conversion, affix this completed label inside the boiler, beside
the rating plate.
Fuel / Carburant
Natural Gas / Gaz naturel
Inlet Pressure / Pression d’entrée
14” W.C. / po C.E. max.
5” W.C. / po C.E. min.
Manifold Pressure / Pression du
- 0.02” W.C. / po C.E.collecteur
Input / Entrée
Unchanged / Inchangé
Installer accepts the responsibility that this conversion has been properly made.
Installer accepte l'entière responsabilité de la qualité de la conversion.
(Low fire, door off / Faible feu,
porte hors)
CETTE CHAUDIÈRE A ÉTÉ CONVERTI À PARTIR DU
PROPANE AU GAZ NATUREL
À la fin de la conversion de carburant, apposer cette étiquette complété l’intérieur de la
chaudière, à côté de la plaque signalétique.
SL / VFC SERIES BOILERS
SL / VFC SÉRIE CHAUDIÈRE
Natural Gas
Kit No./Trousse N
80-174A
oP-223
Gaz naturel
Propane
Kit No./Trousse N
80-173A
oP-224
80-171A
Address/Adresse
Installation Company
Entreprise d'installation
Kit No.
Trousse No.
Better
Boilers
THIS BOILER HAS BEEN CONVERTED FROM
NATURAL GAS TO PROPANE
This boiler was converted on day / month / year
Cette chaudière a été convertie le jour / mois / année
Upon completion of the fuel conversion, affix this completed label inside the boiler, beside
the rating plate.
Fuel / Carburant
Propane
Inlet Pressure / Pression d’entrée
14” W.C. / po C.E. max.
5” W.C. / po C.E. min.
Manifold Pressure / Pression du
- 0.02” W.C. / po C.E.collecteur
Input / Entrée
Unchanged / Inchangé
Installer accepts the responsibility that this conversion has been properly made.
Installer accepte l'entière responsabilité de la qualité de la conversion.
(Low fire, door off / Faible feu,
porte hors)
CETTE CHAUDIÈRE A ÉTÉ CONVERTI À PARTIR DU
GAZ NATUREL AU PROPANE
SL / VFC SERIES BOILERS
SL / VFC SÉRIE CHAUDIÈRE
À la fin de la conversion de carburant, apposer cette étiquette complété l’intérieur de la
chaudière, à côté de la plaque signalétique.
Propane
Kit No./Trousse N
80-108A R1
oP-170
80-107B R1
This control has been converted for use with:
Natural Gas Gaz naturel
Propane Propane
Cette commande a été convertie pour
fonctionner au gaz: