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Boiler Wall Mounted High Efficiency Series 4 399K BTU 94%

Item #:ULTRA399S4 
Manufacturer Item: 383-500-738
Manufacturer: WEIL-MCLAIN
Weil-McLain ULTRA399S4 Boiler High Efficiency Series 4 94%
Weil-McLain Ultra UG-399 Cast Aluminum High-Efficiency Condensing Natural/LP Gas Fired Water Boiler, 91.7% AFUE, 80 - 399K BTU Input, 364K BTU Ouptput
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority
  • Modulates with 5:1 turn-down ratio
  • High grade stainless steel burner features quiet operation
  • U-Control gives the power for easy set-up and maintenance, multiple set-up and zone options, system sensing recognizes system and outdoor temperatures, temperature management for up to three different set-points, control multiple boilers from a single control panel, standard screen messages provide service alerts and maintenance reminders
  • 30 psi ASME relief valve
  • Drain valve
  • Stainless steel burner (80, 105) with woven steel fiber mesh (155, 230, 299 and 399)
  • Variable speed blower assembly, Venturi mixing system with air silencer, negative pressure regulated gas valve, 50 VA transformer
  • Dual scale temperature and pressure gauge, outlet water temperature sensor, inlet water temperature sensor, flue gas temperature sensor, outdoor temperature sensor
  • System water temperature sensors, fully removable jacket front, adjustable boiler legs, on/off power switch, condensate trap with drain tee assembly, propane conversion orifice (all except model 80), water treatment - inhibitor and test kit
  • Control module - 3.5" LCD display, 3-boiler priorities with multiple preset system configurations, color-coded removable terminal blocks, multiple boiler functionality, alarm control functionality, ignition control, high limit and modulating temperature control, low water protection, outdoor reset, ability to control any combination of 3 circulators
  • PVC/CPVC/PP vent material
  • 1-1/2" minimum recommended pipe size
  • 1-1/4 and 1-1/2" flanges (399) taco 0013 boiler circulators
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All Gas Boilers

Brand Name
Weil-McLain
BTU Input
80K BTU-399K BTU
BTU Output
91-142 MBH
Material
Aluminum
Voltage
115
AFUE
94%
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ULTRA399S4
Boiler Wall Mounted High Efficiency Series 4 399K BTU 94%
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