HSB108S01 – Modine Steam/Hot Water Unit Heater
| Heating Capacity (Steam) |
108,000 BTU/hr at 2 psi |
| Heating Capacity (Hot Water) |
83,700 BTU/hr at 200°F entering water |
| Water Flow Rate |
8.7 GPM at 200°F |
| Airflow |
2010 CFM |
| Motor |
1/8 HP Explosion-Proof |
| Voltage |
115V/1/60 |
| Coil Type |
Serpentine Copper Tube |
| Discharge Width |
25-1/2″ |
| Dimensions (W x H x D) |
25-1/2″ x 24-7/16″ x 16-1/4″ |
| Weight |
74 lbs |
| Connection Size |
1-1/4″ FNPT (Top/Bottom) |
| Mounting |
Suspended (Threaded Rod) |
| Certifications |
CSA, Made in America |
| Warranty |
2 Year Parts |
Installation and Piping Flexibility for Modine HSB108S01
Top and bottom 1-1/4″ FNPT supply and return connections allow the unit to rotate 360° without modifying piping configurations. This flexibility simplifies installation in tight spaces or when matching existing piping layouts. The two-piece casing provides fast access to the coil for routine maintenance or inspection without full unit removal.
Pre-drilled tapped holes accept threaded rod suspension, eliminating field drilling and reducing installation time. For smaller applications, the optional pipe hanger adapter kit offers an alternative mounting method. The unit’s 74 lb weight and compact 24-7/16″ height make it manageable for two-person installation crews.
Construction and Durability
High-grade steel casing with baked-on polyester paint provides corrosion resistance while blending into industrial environments. The neutral finish withstands the temperature cycling and moisture exposure common in hydronic heating systems. CSA certification confirms the unit meets safety and performance standards for commercial installations.
The serpentine copper tube design maintains structural integrity under repeated thermal expansion and contraction cycles, extending service life in systems with frequent on/off cycling. This thermal shock resistance is particularly valuable in steam applications where rapid temperature changes occur during startup.
Compatible Systems and Applications
The HSB108S01 integrates into new or existing hydronic systems using standard 1-1/4″ threaded connections. It works with steam pressures up to 2 psi or hot water systems operating at 200°F entering water temperature. The unit’s vent-free design eliminates combustion venting requirements, simplifying installation compared to gas-fired unit heaters.
Common applications include warehouse heating, loading dock areas, corridors, and perimeter wall heating in manufacturing facilities. The horizontal discharge pattern works well for spaces with higher ceilings where heat needs to be projected across longer distances before stratifying.
Support and Availability
Heinlein Supply stocks the Modine HSB108S01 and related replacement components for same-day shipping on orders placed before 3 pm.
Our technical staff can verify compatibility with your existing system and recommend appropriate piping configurations for your facility layout. Professional installation is required by the manufacturer to maintain the 2-year parts warranty. Contact our experts to verify specifications and get current lead times on HSB108 units.
