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Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit
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international.com for up-to-date information.
28
Pre-Start-Up Checklist
Note:
This section to be performed by installer. Consult other information, such as schematics, as necessary.
Heater in permanent location on level surface sufficient for load and anchored
Heater assembled
Transfer pump (if used) in place with flexible water pipe connected
Wiring reconnected
• Water pressure switch
• Blower motor
• UV scanner
• Spark rod
• Burner modulation, if used
• Lower canister float switches
• High temperature switch
• Transfer pump
• Remote storage tank switches or field-supplied relay coil in control panel
Fuel line connected
• Adequately sized
• Adequately supported
• Pressure checked if required
• Purged
Water piping connected
• Sufficient inlet flow and pressure
• Adequately supported
• PRV if large pressure swings
Exhaust piping connected
• CPVC welded or stainless steel
• No unsealed joints
• No bends sharper than 45°
• Properly sized (no back pressure)
• Adequately supported
• Properly terminated
Intake air piping connected or filters installed if necessary
• CPVC, stainless steel, or galvanized
• Adequately sized
• Adequately supported
• Proper termination
Storage tank
• Properly piped
• Float switches installed correctly
• Float switches correctly wired to heater
Main power supply properly connected
• Three phase
• Voltage as specified on nameplate and connections
