The following terms are used throughout this manual to bring attention to the presence of hazards of various risk levels.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death, serious injury or substantial property damage.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in moderate or minor injury or property damage.
Basic Operation
CAUTION
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 I'admission de gaz ne peut étre coupée, ne pas couper ni débrancher l'alimentation électrique de la pompe. Fermer plutôt le robinet d'admission de gaz à l'extérieur de I'appareil.
Do not use this boiler if any part has been under water. Immediately call a qualified service technician to inspect the boiler and to replace any part of the control system and any gas control which has been under water.
A.General. This water boiler is equipped with controls for proper operation. All controls must be in proper working order. Contact a qualified service agency to provide annual maintenance as specified in Installation, Operating and Service Instructions.
1.Limit. See Figure 1. A device which automatically interrupts boiler operation when the water temperature exceeds the set point. Maximum allowable temperature is 220°F.
Original equipment with this boiler is U.S. Boiler
IQ Control and Limit Rated Sensor combination. The IQ Control shuts off boiler main burners when boiler water temperature exceeds
IQ control water temperature set point. Boiler main burners will
2.Flame Rollout Switch. See Figure 1. A device which automatically interrupts boiler operation when flames or excessive heat are present in the combustion area enclosure. The control is a single use device. The control is located in the combustion area enclosure. If the control was activated to interrupt boiler operation, do not attempt to place boiler in operation. Contact a qualified service agency.
WARNING
Service on this boiler should be undertaken only by trained and skilled personnel from a qualified service agency.
WARNING
Do not reset Blocked Vent Switch unless a qualified service agency has determined and corrected the cause of any blockage in the vent system or chimney.
3.Blocked Vent Switch See Figure 1. A device which automatically interrupts boiler operation when excessive vent system blockage occurs. If the control was activated to interrupt boiler operation, do not attempt to place boiler in operation. Contact a qualified service agency.
4.Electronic Ignition System - see Figure 1. The
Electronic Ignition (EI) System consists of:
a.a solid state ignition control with integral ignition module to initiate, monitor and stop burner operation.
b.a combination gas valve to regulate gas flow to the main burners.
c.a pilot burner to provide the ignition source for the main burners.
B.Instructions to place the boiler in operation and to turn off the boiler are shown on the Operating Instruction Label posted on the left jacket panel of the boiler. The Operating Instruction Label is shown in Figure 2.
