IBC SL 10-85 G3 Owner's manual

Commissioning supplement for SL G3 series boilers
with side piping
The information provided here covers the commissioning process of the SL 10-85 G3, SL 14-115 G3, SL 20-
160 G3, SL 30-199 G3 boilers. It is intended as a supplement to the official information provided in the
Commissioning 3.0 section of the Installation and Operating Instructions manual.
Equipment needed for commissioning
•SL Installation and Operating Instructions manual • #15 Torx screwdriver
• Small adjustable wrench or 1/2" (13mm) wrench • Digital combustion analyzer
• Pocket screwdriver • Manometer
Before you start the commissioning process
1. Review the Commissioning section in the SL Installation and Operating Instructions manual.
2. Prepare your combustion analyzer:
3. a. Clear your combustion analyzer outside in a clean environment, and check that the O2is at
20.9% and CO is at 0.
b. Enter the boiler room with the analyzer operating, and verify that the values remain the same or
within safe working limits.
c. Loosen the vent stack bolt to enable easy access to the combustion analyzer’s wand.
4. Become familiar with the gas valve. You may notice
differences between gas valves and references in
manuals. Consider the following:
Read only the Inlet gas pressure.
Open the inlet gas port and connect the
manometer:
Gas pressure must not exceed 14" water
column (WC).
Gas pressure must not be less than 4"WC
at any firing rate.
Gas pressure at ignition must not fall more
than 2"WC from static pressures.
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Once a flame is established, the gas pressure must not fall more than another 3"WC as
the unit reaches the maximum firing rate.
Commissioning a boiler
For the commissioning of each boiler:
1. Record the type of gas and incoming gas pressure.
Type of Gas _________ Gas Pressure _______ Ignition Gas Pressure _______Lock-up
Gas Pressure _________ Static Gas Pressure______High Fire Gas Pressure________Low Fire
Original CO2%________High Fire Adjusted CO2________High Fire Original CO2%_______Low Fire
Adjusted CO2________Low Fire µA _________High Fire µA ________Low Fire
If your system is comprised of multiple boilers, after commissioning the individual boilers:
Verify the gas pressure provided to the system.
Operate all the boilers at their maximum firing rate, and achieve a steady state.
Record the lowest gas pressure observed _________ .
High fire all boilers ( pressure should not deviate significantly from the individual pressure recorded
earlier).
You will use the V-10 controller's "Manual" mode to perform the following boiler setup. Once
commissioning is completed, you must return the load to the desired load configuration. If this is a
multiple-boiler system, disconnect the boiler network wiring by removing the terminal block TB2 pins 1-10
(unplug the 12-pin connector).
2. Set the Load Type to Manual as well as the maximum supply and the heat output values.

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a. Change the load to Manual mode. Select a load (in our example we've selected Set Point) that can
reject the amount of heat the boiler will create. When you operate the boiler at high fire for a period (for
example, 15 minutes) your selected load will need the capacity to reject this heat.
To select Manual mode, go to the Main Menu >Installer Settings > Select a load
(Load 1, 2, 3 or 4), and set the Load Type to Manual>OK. Set the Maximum
Supply, and set the Heat Output to its maximum value, and then Save.
b. Change the Maximum Supply (high limit) setting value temporarily to keep the boiler safe and
operational.
I. Note the original temperature value ________. Upon completion of the commissioning, use
this value to reset the temperature to its original value.
You may need to Increase this value to extend the duration of the burner-on cycle.
II. In Manual mode, if the limit is reached and the burner is disabled, the boiler will not restart
on this load unless you interrupt the call for heat. To do this remove the thermostat block
(TB2 1-10), wait a minimum of 3 seconds, and then insert the block back in the receive; or
open the call for your chosen heat load, wait a minimum of 3 seconds, and then close the
control circuit once again, or digitally change Manual to Off, then back to Manual and
begin again.
c. Change the heat output to the maximum firing rate and then save the change as shown above.
d. Check the flame current.
To check the flame current, go back to the Main Menu >Dia-
gnostics >SIM Menu >Status. Verify the Flame Current
high fire. For minimum µA values, see the Flame Minimal Signal table
below.

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Identify μA__________
Note: High fire μA should be greater than 6 μA.
If the value is:
Less than 6 μA, verify combustion.
Correct, check the ignitor is correctly positioned in relation to the burner.
Still low consider replacing the ignitor with the latest ignitor kit.
3. Test the gas lock-up.
To test the gas lock-up, do one of the three methods:
1. Remove the thermostat block (TB2 pins 1-10), wait and record the highest gas pressure observed.
2. Open the call for your chosen heat load, wait and record the highest gas pressure observed.
3. Change Manual to Off, then change back to Manual, wait and then record the highest gas
pressure. If the gas pressure fails to:
Stop under 14"WC, and continues to rise after the call for heat has been disabled, adjust or
replace the regulator.
Lock up under 14"WC, consider the placement of the regulator in relationship to the boiler,
the regulator selection itself, or adjust as needed.
Use the Back button to navigate to the Main Menu, and then see Step 4.
4. Lower the heat output to the minimum firing rate.

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a. Change the heat output in the Installer Settings.
Go to the Main Menu >Installer Settings > Select the Edit button next to the Manual
load type > In the Heat Output box, change the value to the minimum firing rate, and
select Save > Create a demand for heat > Select the Back button to return to the Main Menu.
b. Check the low fire (Flame Current) µA.
To check the flame current, go to the Main Menu >Diagnostics >SIM Menu >
Status >Flame Current.
c. Identify the μA.__________
Low Fire μA should be greater than the minimum values prescribed in the table below.
Flame Minimum Signal
Model Minimum Raw
Value
Anticipated Raw
Value
µA
Min.
Anticipated
Value µA
SL 10-85 G3 400 548 1.6 >2.2
SL 14-115 G3 498 871 2.0 >3.5
SL 20-160 G3 600 946 2.4 >3.8
SL 30-199 G3 498 871 2.0 >3.5

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Flame Minimum Signal
Model Minimum Raw
Value
Anticipated Raw
Value
µA
Min.
Anticipated
Value µA
SL 26-260 G3 498 871 2.0 >3.5
SL 40-399 G3 871 1, 195 3.5 >4.8
If the value is less than anticipated, verify combustion.
If low fire CO2is out of calibration, contact IBC technical support: 1-844-432-8422.
Note: This can be done only after high fire calibration has been set and verified.
Adjust the low fire using the zero-offset adjustment screw (Low Fire adjustment). Note:
This adjustment is sensitive and should only be attempted after consulting with IBC
technical support.
To access the adjustment screw, remove the #15 Torx Cap.
Adjust the nylon screw as specified below:
Only adjust the zero-offset adjustment in 1/8th turns or less and wait for your
analyzer to stabilize.
Never adjust the zero-offset adjustment greater than 1/2 of a revolution in either
direction unless directed by the IBC technical support.
d. Once complete, use the Back button to navigate to the Main Menu.
5. Set the Load type back to your desired load type.
a. Do the following:

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Go to the Main Menu >Installer Settings > Select the Manual load
option, change the load type to the previous load type, and then select OK.>
Set the Boiler Supply and Maximum Supply values and Save.
b. Review your setup information, and verify the settings are set to your preferences.
c. Verify the maximum temperature (High limit) meets your load type.
The maximum temperature should be set to avoid any harm to your heating medium and
system, yet, as high as possible for your application (this is your high limit, not your setpoint).
At a minimum, the maximum temperature value should = 1/2 your differential + your design or
setpoint temperature + 5⁰F for a buffer.
6. Refer to Step 1.
a. Complete the information in Step 1 to establish your baseline.
b. If your system is comprised of multiple boilers, after commissioning the individual boilers, verify the
gas pressure provided to the system.
i. Operate all the boilers at their maximum firing rate and achieve a steady state.
ii. Record the lowest gas pressure observed _________ high fire for all boilers (this pressure
should be deviate significantly from the individual pressure recorded earlier).
7. On a multiple-boiler application, after commissioning the boilers, power cycle the master boiler.
To ensure that the subordinate boilers are registered in the master boiler, cycle the high voltage power of the
master boiler, and allow the touchscreen controller to reboot.