INSTALLATION AND OPERATION INSTRUCTIONS
3-2
SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
3.2 PRIOR TO START-UP
3.2.1 Pre-Ignition Checks
1.
Ensure venting system is complete and seal tested. Confirm any common venting
system at the installation site is isolated and independent of the SL boiler. Also
confirm that any holes left from removal of a previous boiler have been sealed, and
that any resizing of the old flue has been done. Fill the condensation trap.
2.
Check that the water piping system is fully flushed and charged, and that all air has
been discharged through loosened bleed caps. Note that it is possible to switch all
pumps on/off from the keypad – without a call for heat. This greatly simplifies system
filling and air bleeding (go to
Installer Setup
, drop down to
Pump Purge
and toggle to
On
. When complete, return to
Off
, or this will automatically occur with a call for heat).
Use a minimum water pressure of 12 psig. And confirm that the pressure relief valve
is installed and safely drained.
3. Check to see that adequate gas pressure is present at the inlet gas supply test
port. Open the test port (using a small (1/8” or 3 mm) flat screwdriver ) by turning its
center-screw one full turn counterclockwise. Connect a manometer and open the
gas control valve. Requirements are minimum 4” w.c and maximum 14” w.c. Check to
ensure that there are no gas leaks.
4.
Perform a final check of the electrical wiring, and provide power to the boiler to
initialize operation.
3.2.2 Test Ignition Safety Shutoff
With the boiler in operation, test the ignition system safety shutoff device by shutting the
gas control valve immediately outside the boiler case. Ensure boiler has shut off and the
appropriate Error information is displayed on the Touch Screen. To restart boiler, reset power
or press “Clear Errors” in the Advanced Diagnostics section.
3.3 COMMISSIONING
The SL modulating boilers are factory calibrated to operate with natural gas (or propane
if so ordered) at sea level. The Zero-offset valve adjustment cap has been factory sealed
using red paint-seal compound.
This cap must not be tampered with. The Zero-offset
screw is not to be adjusted in the field.
The Gas:Air ratio adjustment screw may have
to be adjusted to attain optimum combustion results if required, however, no mixture
adjustment shall be performed unless done by a qualified technician using properly
functioning and calibrated combustion analyzing equipment.
This boiler model can burn either Natural gas or Propane if equipped with the correct
orifice. Examine the rating plate of the boiler to ensure it is configured for the fuel you are
using. If the boiler is configured for natural gas, but needs to be converted to propane, use
the conversion kit (included with the boiler) to install the appropriate fitting(s) and adjust
the gas valve accordingly. See Table 8 to check that you have the correct conversion kit.
The controller will automatically detect the installation’s altitude and make the appropriate
adjustments to operate the boiler up to 4,500 feet in elevation without de-ration. The boiler
will automatically de-rate at altitudes above 4,500 feet. Refer to the IBC Altitude tables for
further information.
WARNING
Fill trap with water before boiler is
first fired to prevent exhaust fumes
from entering room. Never operate
the boiler unless the trap is filled
with water. Failure to comply will
result in severe personal injury or
death.
Error displayed after testing ignition
safety shut off
Summary of Contents for SL 14-115 G3
Page 71: ...6 3 DIAGRAMS SL 14 115 G3 SL 20 160 G3 SL 30 199 G3 MODULATING GAS BOILERS...
Page 73: ...6 5 DIAGRAMS SL 14 115 G3 SL 20 160 G3 SL 30 199 G3 MODULATING GAS BOILERS...
Page 75: ...6 7 DIAGRAMS SL 14 115 G3 SL 20 160 G3 SL 30 199 G3 MODULATING GAS BOILERS...
Page 81: ...SERVICE RECORD DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE...
Page 82: ...NOTES...
Page 83: ...NOTES...
