PVI Industries PV500-44U - Manual (Page 6)

6
PV500-44U 06/12
2 STANDARD FEATURES AND EQUIPMENT
2.1 Performance
 98% thermal efficiency at full fire from 40° to 140°F
 Up to 99% thermal efficiency with modulation
 < 20 ppm NOx (399 to 900 MBH)
 Ducts direct combustion air up to 100 equivalent feet through 6-inch diameter material (requires UL
approved vent cap, see optional equipment list)
 Vents up to 100 equivalent feet through 6-inch diameter material
2.2 Pressure Vessel
 AquaPLEX  tank (unlined duplex alloy)
 Storage tank ASME stamped and National Board registered for 150 psi MAWP
 Nonferrous, removable fittings at all tank connections
 Hand hole cleanout
 Fiberglass insulation
 Steel jacket panels with industrial-grade finish
 Drain valve
2.3 Heat Exchanger
 Three-pass, fire tube design
 AquaPLEX  fire tubes
 Secondary economizer for low temperature flue gas
2.4 Codes and Standards
 Intertek / ETL listed to US and Canadian safety standards
 Intertek / ETL listed for use with CPVC vent material (SANI models require listed Cat IV SS vent)
 Intertek / ETL certified as low-lead compliant
 FM compliant
 ASHRAE 90.1 compliant
2.5 Burner, Operating Controls & Safeties
 Pre-mix surface burner with self-adjusting, proportionate gas/air ratio
 UL 795 compliant gas train
 Electronic flame safeguard with pre- and post-purge
 Combustion sequence panel lights including lockout
 Programmable electronic operating control with digital temperature readouts,
adjustable from 70°F to 180°F
 Immersion temperature limiting device (high limit control)
 ASME-rated temperature and pressure relief valve
 NEMA-1 control enclosure
 Terminals for remote on-off
 Flame failure audible alarm and indicating light with remote contacts
 Seamless VFD modulation with 7-to-1 turndown
2.6 Warranty and Service Policy (see warranty or service policy for details)
 10-Year tank warranty (PV 627)
 3-Year scale failure warranty (PV 563)
 First-year cost-free service policy (PV 551)
 10-Year chloride-induced stress corrosion cracking warranty (PV 8083)
2.7 Miscellaneous
 Factory authorized startup
 Vent termination cap, 6-inch diameter (larger cap optional)
 Factory-equipped for connection to direct inlet air (requires UL listed vent termination cap, see options list)
 Condensate “P” trap (provided for field installation)