Raypak 0180B - Manual (Page 23)

START-UP PROCEDURES
SECTION 1. Filling the System
Fill system with water. Purge all air from the system
using purge valve sequence. After system is purged of
air, lower system pressure. Open valves for normal
system operation, fill system through feed pressure
regulator to minimum 12 PSI. Manually open air vent
on the compression tank until water appears, then close
vent.
On multiple zone systems, purge each zone sepa-
rately. Isolate the other zones while one zone is being
purged of air.
Flush system before putting into operation to as-
sure that foreign material does not damage pump seals.
SECTION 2. Checking the Circulator
Before lighting the boiler and after system is filled,
make sure that circulator is operating properly. Manual
gas valve should be off. By adjusting the wall thermo-
stat to the maximum setting, circulator should run
immediately and allow water to flow through the boiler
and the entire system.
NOTE: Circulator motor supplied with the boiler does
not require lubrication.
CAUTION: In case of a prolonged power failure during
freezing weather conditions, boiler and piping system
must be drained completely to avoid possible damage
to the heating system.
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