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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