Rinnai 37AHB specifications Optional Equipment, Nomenclature, Heating Capacities

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Connect an auxiliary 2.5 FLA, 2.5 LRA @ 115 VAC max Humidifier. Connections are made via the “HUM” quick connects. The humidifier output is on whenever a heating demand is being satisfied. The contacts of this output are isolated to allow application of 24 VAC or 115 VAC to one terminal and the humidifier load to the other.
Connect an auxiliary Electronic Air Cleaner; rating shall be max 1.0 Amp @ 115 VAC. This output is energized whenever any of the four blower speeds are energized. Connections are made via 0.250 x 0.032” male quick connect terminals labeled "EAC" and "N3".
Connect an auxiliary UV lamp (if required); rating shall be max 1.0 Amp @ 115 VAC. This output is energized whenever any of the four blower speeds are energized. Connections are made via 0.250 x 0.032” male quick connect terminals labeled "UV" and "N2".
Can accomodate most brands of evaporator A-coil for cooling applications.

37AHB Series Hydronic Furnace

Optional Equipment

FIELD-SUPPLIED ACCESSORIES capable of interfacing with the Rinnai Hydronic Furnace:

Humidifier (HUM)

Electronic Air Cleaner (EAC)

UV Lamp

Cooling Coil

Nomenclature

 

Model

37AH B

045 08 K

A 5

 

 

Multi-position

 

 

 

 

 

 

 

 

 

37AH - Multi-speed Hydronic Furnace

 

 

 

 

 

5 = Yes

 

Series

 

 

 

 

 

 

 

2 = No

 

 

 

 

 

 

 

 

 

 

 

A - Unit with PSC Motor

 

 

 

 

 

Engineering Digit

 

B - Unit with ECM Technology

 

 

 

 

 

Denotes minor change

 

 

 

 

 

 

 

 

 

 

 

Nominal Heating Capacity (BTU/h)

 

 

 

Voltage Code (V-Ph-HZ)

045 = 45,000

 

 

 

 

Cooling / Heating

 

 

 

 

 

 

K = 115 - 1 - 60

060 = 60,000

 

 

 

 

 

 

 

 

 

Air Flow Range (CFM)

 

 

 

 

L = 240 - 1 - 50 (export models)

075 = 75,000

 

 

 

 

08 = 800 (650-800)

 

 

 

 

 

 

 

 

 

 

090 = 90,000

 

 

 

 

 

 

 

 

 

 

 

 

 

12 = 1200 (650-1200)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14 = 1400 (1000-1600)

 

 

 

 

 

 

 

 

 

 

 

16 = 1600 (1200-1750)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating Capacities

 

 

Nominal heating capacities as tested with Rinnai tankless water heaters.

 

 

 

 

 

For final rated capacities refer to the Air Delivery and Performance

 

 

 

 

 

 

 

 

 

 

Tables in the Operation and Installation Manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AHB45 (BTU)

 

AHB60 (BTU)

 

AHB75 (BTU)

 

AHB90 (BTU)

 

 

 

120º F

 

27,700

 

36,400

 

43,700

 

 

54,900

 

 

 

130º F

 

33,300

 

45,100

 

52,900

 

 

63,900

 

 

 

140º F

 

40,100

 

50,800

 

61,600

 

 

76,200

 

 

 

150º F

 

47,700

 

59,700

 

70,400

 

 

86,600

 

 

 

160º F

 

51,200

 

68,100

 

78,900

 

 

96,300

 

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Contents 37AHB Series Hydronic Furnace FeaturesEquipment AccessoriesAHB45 BTU AHB60 BTU AHB75 BTU AHB90 BTU Optional EquipmentNomenclature Heating CapacitiesDimensions WarrantyUnit Size Air Nominal AIR Delivery Chart Bottom or Side Return w/ FilterSpecifications

37AHB specifications

The Rinnai 37AHB is a modern, advanced heating appliance designed to meet the demands of contemporary homes. It stands out due to its unique blend of efficiency, reliability, and innovative features, making it an ideal choice for anyone looking to enhance their home heating experience.

One of the standout features of the Rinnai 37AHB is its high efficiency rating. The unit operates with a remarkable energy efficiency level, helping to reduce heating costs and lessen environmental impact. This is particularly beneficial for homeowners looking to maintain a comfortable temperature without incurring high energy bills.

The 37AHB is equipped with a powerful heating capacity, making it suitable for medium to large spaces. With its ability to deliver consistent warmth even during the coldest seasons, the unit ensures maximum comfort for residents. This is further enhanced by its advanced heat exchanger technology, which optimizes heat transfer and distribution throughout the home.

The Rinnai 37AHB also features an intuitive digital control panel, allowing users to easily adjust settings for personalized comfort. This feature enables direct access to temperature settings, timer functions, and mode adjustments, making it user-friendly and convenient. The ability to set precise temperatures ensures that living spaces are always kept at optimal conditions.

Safety is a priority with the Rinnai 37AHB, as evidenced by its built-in safety features. The unit includes a flame failure device and an overheat protection mechanism, providing peace of mind for users and ensuring reliable operation without the risk of accidents. Additionally, the appliance is designed with high-quality materials, ensuring durability and longevity.

Installation of the Rinnai 37AHB is straightforward, with various options available for venting and placement. This flexibility allows homeowners to choose the best configuration for their space. Plus, its sleek and modern design enables it to blend seamlessly with various interior styles, enhancing overall aesthetic appeal.

Finally, the Rinnai brand is known for its exceptional customer support and warranty offerings, which provide added assurance for buyers. With the combination of efficiency, advanced technology, and design flexibility, the Rinnai 37AHB stands out as a top choice for those seeking an effective heating solution that prioritizes both comfort and safety. Whether upgrading an existing system or investing in a new one, the Rinnai 37AHB is an excellent option for modern heating needs.