Rinnai 37AHB Specifications

AHB90
FEATURES
● Four models covering a range of heating capacities
○ 27,100 to 96,300 BTU/hour
● Multi-position (upflow, downflow, horizontal left,
horizontal right) without modifications *
○ Modifiable for side-entry return air
● Low-flow, high-head pump custom designed to work
with Rinnai's tankless water heaters
● Integrated control board with learning algorithm
● No combustion air infiltration losses when used with
a Rinnai tankless water heater
● Four selectable heat blower off delay times
● Multi-speed motors (ECM)
● Strong 20-gauge steel cabinet
○ Galvanized, painted
○ Fully insulated cabinet
○ Low 34 inch profile
● Multi-position control box
● Designed for serviceability
● Schrader valves to purge air from the system
● Integral filter rack with filter
● Fan motor with ECM technology
*
NOTE: The unit is not designed to be installed on its back or
face down.
AHB75
AHB60
The optimum in hydronic technology, the newly
designed Rinnai® multi-position hydronic furnaces
offer a unique solution for a wide variety of small- and
medium-sized residential and light commercial
applications. They are compact and ready to fit in tight
spaces which may include, but not limited to, attics,
basements, closets, crawlspaces, and utility rooms.
Intelligent Microprocessor Controller
The 37AHB units are equipped with an intelligent
microprocessor control that allows for domestic hot
water priority and adapts to available hot water flow for
space heating by automatically regulating the pump
and fan sequence to maximize comfort.
Fine Tuned to Work with Rinnai Tankless
Water Heaters
These unique hydronic furnaces are designed to work
in combination with our line of Rinnai® tankless water
heaters to deliver heating capacities that cover a wide
spectrum of residential and light commercial heating
applications. When combined, the units form the Rinnai
Tankless Heating System, the first matched, tankless
hydronic heating solution in the industry!
37AHB Series Hydronic Furnace
Part of the Rinnai Tankless Heating System
AHB45
UL recogniz ed
component
PATENT PENDING
This product is manufactured in a
facility registered by UL to ISO
9001.
600000060 (7/2010)