ES2 User Information Manual

2
109547-01 - 6/19
1. Instructions to safely light and shut down this boiler are shown on pages 5 - 7, as well as on a label affixed to the
boiler. When the boiler is working properly, this boiler will light and shut down automatically in response to the
building thermostats(s). If it does not, the boiler must be inspected by a qualified gas service technician.
2. All boilers are equipped with a means of preventing the boiler from firing if there is an excessive blockage in the
vent system. Depending on the type of boiler, one of two means are used:
• Boilers designed for chimney venting are equipped with a blocked vent switch located as shown in Figure
1 or 2, depending on the specific boiler design. If this switch opens, the boiler will not fire. Call a qualified
heating service agency to diagnose and the problem and reset this switch if necessary.
• Boilers equipped with a fan for sidewall venting are equipped with an air pressure switch that will
automatically reset if the blockage is removed. If the boiler fails to fire and the vent terminal on the outside
of the building can be safely assessed, inspect the terminal for a blockage such as ice buildup or a nest. If
such a blockage is not present, or cannot be safely removed, call a qualified heating service agency
to diagnose and correct the problem.
3. All boilers are equipped with a flame rollout switch (Figure 3). This switch will shut the burners down in the
event that flames exit the burner compartment through the front opening. If this happens, the flame rollout switch
must be replaced. If the boiler fails to fire, call a qualified heating service agency to diagnose and correct the
problem.
The following terms are used throughout this manual to bring attention to the presence of hazards of various
risk levels.
Basic Operation
CAUTION
Indicates a potentially hazardous situation
which, if not avoided, may result in moderate
or minor injury or property damage.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death,
serious injury or substantial property
damage.
!!
WARNING
• A shutdown of the burners due to the blocked vent switch is an indication that there is a problem with
the vent system, such as a blockage, or the combustion air supply. The blocked vent switch should only
be reset after a qualified gas service technician has diagnosed and corrected the venting/combustion
air problem that caused the blocked vent switch to open.
• In the event that the flame rollout switch opens, the cause of the flame rollout must be diagnosed and
corrected by a qualified gas service technician before the boiler is restarted.
• A “tripped” flame rollout switch must be replaced by an identical switch having the same
temperature setting.
• 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.
• This boiler is equipped with safety devices, which could cause it to shutdown, requiring service to
restore normal operation. Where such a shutdown could result in damage from low temperatures (such
as frozen pipes), do not leave the heating system unattended during cold weather unless alarms or
other safeguards are in place to prevent damage.
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