Specifications

Armstrong International
IOM-706
Flo-Direct Water Heater
Page 27 of 45
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 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