HCR/HSI Rectangular Damper with Belimo Modulating Actuator

Custom square and rectangular motorized damper built to your duct dimensions and factory-fitted with a Belimo modulating actuator for proportional 2 to 10 VDC control from a BAS or DDC system. Use the HCR for new ductwork (it connects inline to open duct ends) or the HSI slip-in model for existing ductwork. Specify HCR or HSI in your quote request.

• Belimo TFB24-SR, spring return modulating, 24 Vac/dc
• Belimo LMB24-SR-T, modulating, 24 Vac/dc
• Standard or with end switch
• 58 sizes from 6" x 34" to 18" x 36"
• Custom built and non-returnable, so we confirm every specification before building

Choosing a modulating actuator

Both actuators accept a proportional 2 to 10 VDC control signal from a BAS or DDC controller and position the blade anywhere between closed and fully open.

• TFB24-SR: spring return. The damper drives to a fail-safe position on loss of power.
• LMB24-SR-T: no spring return. The damper holds its last position on loss of power.

Choose the TFB24-SR where the damper must go to a known position during a power failure, such as an outdoor air intake in a cold climate. Choose the LMB24-SR-T where holding position is acceptable.

HCR or HSI: which one do you need?

The HCR connects inline between two open duct ends, for new construction, remodels and any duct run being modified. The HSI slips into existing ductwork through a partial cut on one side only, so there is no need to remove a duct section or cut all four sides. The HSI is built slightly undersize so it slides inside the duct, and a 1" flange seats against the duct exterior. Order the interior duct dimension for either type, and call the factory if you are unsure how to measure.

Before you request a quote

1. Width and height: exact interior duct dimensions, in inches.
2. Type: HCR (inline) or HSI (slip-in).
3. Actuator: choose it on this page.
4. Action or signal: confirm with the controls designer.
5. Configuration: standard or with end switch.
6. Steel gauge: 26 ga. galvanized standard; specify another gauge if the job calls for it.
7. Motor location: shortest side by default; specify another side if clearance requires it.

Dimensions, actuator, action, voltage and motor location cannot be changed after manufacture, and custom dampers cannot be returned. If any dimension is in doubt, call 1-800-661-7382 before ordering.

Specifications

Related products

Hoyme spring drive version (24 Vac on/off): HCR/HSI Custom Rectangular Dampers. Round duct: HAC inline damper series. Replacing a competitor part number: cross-reference tool.

Freight quote required. Add the damper to your cart and send a quote request from the cart. We confirm final pricing and freight by email before anything is ordered. No payment is taken online. Prices shown are list prices.

Contractors: order through your HVAC wholesaler for your account pricing. Find a wholesaler. Questions on sizing or wiring? Call 1-800-661-7382.