SDT/SET
Installation & Operation Manual
20
6
Start-up and Check-out
1. Make sure the system is free of leaks and that air is
purged from the system.
CAUTION
Fix any leaks found before proceeding
further. Leakage from the boiler piping
can result in severe damage to the boiler.
2. Many soldering fluxes contain Zinc Chloride which
can cause severe corrosion damage to stainless steel. After
completing all domestic water connections, flush the
indirect water heater thoroughly before leaving the
installation. This is particularly important if the indirect
water heater will be unused for an extended period of time
after installation. Flush the indirect water heater by
drawing at least three times its volume from the tank.
3. Make sure that all electrical connections are made correctly
and that no high voltage wiring is exposed.
4. Make sure that each zone valve or circulator operates only
when its thermostat calls for heat. Let each zone operate
long enough to purge any remaining air from the system.
5. Set the indirect water heater to the desired temperature.
Because hot water presents a scald hazard, it is best to set
the thermostat at 120°F or lower and raise it only if
necessary to provide adequate hot water.
6. Re-enable the burner and allow the boiler to operate.
Make sure that the boiler shuts down when the indirect
water heater is satisfied.
