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 | |
