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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 O

2

is 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.

6/18/2018

www.ibcboiler.com

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Summary of Contents for SL 10-85 G3

Page 1: ...he 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 O2 is 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 anal...

Page 2: ...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 controll...

Page 3: ...g 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 bac...

Page 4: ...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 th...

Page 5: ...k 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 S...

Page 6: ...et 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 ...

Page 7: ...rential your design or setpoint temperature 5 F 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 o...

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