Smith Cast Iron Boilers GS110W - Manual (Page 24)

GS110 DIRECT VENT BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 24
BOILER SET UP
NOTE: Before starting the boiler, turn off the
electrical supply going to it. Make sure that gas is
available at the gas valve inlet. Open the valves in
the return and supply piping. Failure to take these
precautions will prevent the boiler from operation
properly.
Fill the boiler and all of the radiation with water. Make
sure that the system is completely purged of air.
Review these instructions and make sure that the boiler
installation complies with ALL of the instructions up to
this point.
BOILER OPERATION
WARNING: Before operating read and
understand the instructions contained in this
manual. Do not attempt to operate this boiler if
it has not been installed in accordance with the
guidelines set forth in this manual. Read and
fully understand the operating instructions in
the “For Your Safety Read Before Operating”
section of this manual, pg 22 & 23. Failure to
comply with this WARNING could result in a fire
or explosion!
Should overheating occur or the gas supply fail to shut
off, do not turn off or disconnect the electrical supply to
the pump. Instead, shut off the gas supply at a location
external to the appliance.
En cas de surchauffe ou si l’alimentation de gaz ne peut
être coupée, ne pas couper ni débrancher l’alimentation
électrique de la ponpe. Fermer plutôt le robinet
d’admission de gaz à l’extérieur de l’appareil..
Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control that has been under
water.
N’utiliisez pas cet appareil s’il a été plongé dans l’eau,
même partiellement. Faites inspecter l’appareil par un
tecnicien qualifié et remplacez toute partie du système
de contrôle et toute commande qui ont été plongés dans
l’eau.
Direct Ignition System
A. Connect a manometer to the pressure ports shown
in Figure 20. Make sure that the gas supply piping has
been purged of air and that all gas joints up to the gas
valve have been thoroughly checked for leaks. Wait at
least five minutes for any gas to dissipate before turning
on the electrical power.
B. Read, understand and follow the operating
instructions, on pg. 22 of this manual.
C. Raise the thermostat at least 5 degrees above the
room temperature. A delay of about 30 seconds will take
place as the silicon carbide ignitor heats up. Once the
ignitor is hot, the main gas valve will open and the burner
should light. If the burner fails to light the system will
make two more ignition attempts. If the burner lights, but
goes out within 4 seconds, the system will make three
ignition attempts. If the burner has not lit after the last
ignition try, the gas valve will close and the system will
go into lock out. DO NOT attempt to reset the system
until the ignition system has been inspected and the
problem resolved. Once the problem has been resolved
and 5 minutes have passed since the last ignition attempt,
reset the system by turning the thermostat to it's lowest
setting and then back to where it was or by momentarily
interrupting the electrical power to the boiler.
D. With the burner in operation the manometer should
show 1.9" W.C. manifold pressure. If not, see the BOILER
CHECKING & ADJUSTMENT section. Close the manual
shutoff valve in the gas supply line. As soon as the burner
flame goes out, open the manual shutoff valve. A normal
ignition sequence should take place.
E. With the burner in operation, interrupt the power to
the control circuit by lowering and raising the thermo-
stat. A normal ignition sequence should follow.
F. To test the ignition safety shutoff device, close the
manual shutoff valve in the gas supply line. Within 6
seconds of main burner flame extinction, the main gas
valve solenoid should close with an audible noise. The
igniter should glow and make three attempts at ignition.
After unsuccessfully attempting to light the burner the
ignition module should lock out.
Open the manual shutoff valve in the gas supply line.
Reset the ignition control system by interrupting, then
restoring electrical power to the boiler. A normal ignition
sequence should take place.