Burnham K2WTC - Page 104

104
107774-01 - 9/17
XIII. Operation (continued)
7. Ignition Failure
The Control monitors ignition using a burner mounted
amesensor.Intheeventofanignitionfailure,the
control retries 5 times and then goes into soft lockout
for one hour.
8. Central Heating System Frost Protection
When enabled, Frost Protection starts the boiler and
systempumpandrestheboilerwhenlowoutsideair
and low supply water temperatures are sensed. The
Control provides the following control action when
frost protection is enabled:
Table 13.2: Frost Protection
Device
Started
Start
Temperatures
Stop
Temperatures
Boiler Pump
Outside Air < 0°F (-18°C)
Supply Water < 45°F (7.2°C)
Outside Air > 4°F (-16°C)
Supply Water > 50°F (10°C)
Boiler Supply Water < 38°F (3.3°C) Supply Water > 50°F (10°C)
D. Multiple Boiler Control Sequencer
This boiler may be used as a slave in a multiple boiler
system where the other boilers employ the same
control. Consult factory for additional information on
doing this.
CAUTION
The Control helps provide freeze protection
for the boiler water. Boiler ue gas
condensate drain is not protected from
freezing. Since the Control only controls
the system and boiler circulators individual
zones are not protected. It is recommended
that the boiler be installed in a location that
is not exposed to freezing temperatures.