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NHB-55 premium features and benefits
2″ venting up to 65′;
3” up to 150’ (including schedule 40 PVC).
The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
NHB integrated control provides industry-leading options and features including adjustable heat capacity, temp boost for outdoor reset control, adjustable anti-cycle timer and freeze protection.
|Dimensions||43.2cm W x 61.0cm H x 30.5cm D (17.0″ W x 24.0″ H x 12.0″ D)|
|Boiler weight||33.1 kg (73 lbs)|
|Installation type||Indoor wall-hung|
|Venting type||Forced draft direct vent|
|Natural gas supply pressure (from source)||3.5 ” WC to 10.5 ” WC|
|Propane gas supply pressure (from source)||8 ” WC to 13 ” WC|
|Natural gas manifold pressure||-0.03 ” WC|
|Propage gas manifold pressure||-0.03 ” WC|
|Connection sizes||Gas inlet||3/4″ NPT (hembra)|
|Power supply||Main supply||120V AC, 60Hz|
|Maximum power consumption||Less than 10A|
|Materials||Casing||Cold rolled carbon steel|
|Heat exchangers||Primary and secondary heat exchangers: stainless steel|
|Venting||Exhaust||2″ or 3″ PVC, CPVC, approved polypropylene (see installation manual for more details) 2″ or 3″ special gas vent type BH (Class III, A/B/C)|
|Intake||2″ or 3″ PVC, CPVC, polypropylene 2″ or 3″ special gas vent type BH (Class III, A/B/C)|
|Vent clearances||0″ to combustibles|
|Safety Devices||Flame rod, APS, gas valve operation detector, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor|