Hoyme HCR-HSI – Universal Square & Slip-in Type Damper – Welcome to Hoyme Manufacturing Inc.

HMI HCR & HSI Series – Rectangular Universal Air Control Damper

Series HCR, HCR Economizer & HSI are custom made Universal Motorized 24Vac Air Control Dampers (also available as 120Vac) , in a square or rectangular shape to the size and dimensions required.

NOTE: Motor is mounted on the Shortest Side unless Otherwise Specified.

HCR – Rectangular Dampers

The HCR series fastens to a square or rectangular air duct in-line to control the flow of air, partially or completely, depending on its mechanical setting. This Damper may be ordered with two different one Motor types (depending on the size) or one of a variety of Belimo Actuators.

HSI – Rectangular Dampers

The HSI series “Slip-in Type” is similar to the HCR but instead of connecting to two open ends of a Rectangular Air Duct it is designed to be an easier install for existing Rectangular Ducts. To install only part of one side of the existing Duct needs to be cut away allowing the HSI to “Slip-In” the side making for a fast and easy installation solution for your Rectangular Damper needs.

Features of both the HCR and HSI Include:

Easy to install in-line as part of Standard Rectangular or Square Air Duct.
Durable, patented HMI HOYME ‘Spring Motor Drive’ with Nylon Bearings.
26 ga. galv. steel is standard however other sizes and weight of steel can be used upon request.
These Dampers can be used for the new ventilation code which requires a designated Exhaust Fan, a centrally located switch marked ‘VENTILATION‘ and a Fresh Air Intake Damper, all interconnected to the Furnace Circulation Fan.
See HMI Interface Relay Adaptors’ which have been specially designed for these Dampers and new ventilation codes.
Series HCR and HSI Dampers are spring returned with a Power Open or Power Closed configuration (some exceptions for dampers using specific Belimo Actuators).

Hoyme Customer Request (HCR) Rectangular Dampers are identified as per the following example:

An 8″ Wide X 12″ High, Power Closed Damper, no switch and one relay would be, HCR-0812-OPC-R:

Series	Width (in)	Height (in)	End Switch	Power Open/Closed	Relay/ Economizer/ Motor Type
HCR	08	12	O	PC	R

NOTE: Motor is Mounted on the Shortest Side unless Otherwise Specified.

Hoyme Customer Request:

Dimensions (inches) (Width x Height) – (Motor is mounted on the Height side of the damper)
Damper Proving Switch (O for none, S if required)
Power Open (PC for power closed)
-R if a Relay is required
-E if Damper is used as an Air Conditioning ECONOMIZER (uses Belimo TFB24 – 24 Vac Spring Return Motor)

Complete list of last column Codes for Ordering with HCR Dampers:

0 – Lg. Black MS10A Actuator with ¼” Drive
1 – Belimo LMX 120 (120 Vac 3 Wire On/Off)
B – Belimo LMB24-3-T (3 wire On/Off)
E – Air Conditioning Economizer (uses TFB24 – Spring Return Motor)
G – Belimo TFB24 – 24Vac Spring Return Motor
K – Belimo TFB120 (120 Vac On/Off – Spring Return)
M – Belimo LMB24-SR-T (3 Wire – Modulating type)
R – Add Relay
V – Belimo FSLF 24 (24 Vac Fire and Smoke)
W – Belimo FSLF 120 (120 Vac Fire and Smoke)

HCR – Economizer Damper

The HCR Economizer Damper Series fastens to a Square or Rectangular Air Duct in-line to control the flow of fresh air with an Air Conditioner. The Damper closes when the outside temperature is higher than 55ºF and opens when lower than 55ºF.

Operation of the Air Conditioner Economizer

Thermostat Cooling Cycle – power is supplied to AC ‘Y’ from thermostat ‘Y’:

When outside temperature is higher than 55°F:
- a) Thermo switch is open
- b) Fresh Air Damper is closed
- c) End Switch is closed
- d) Air Conditioner is running.

When outside temperature is lower than 55°F:
- a) Thermo switch is closed
- b) Fresh Air Damper is open
- c) End Switch is open
- d) Air Conditioner is idle.

Thermostat Heating Cycle – Power is not supplied to ‘Y’ terminals:

a) Fresh Air Damper is closed
b) Air Conditioner remains idle.