HMI HLS Series – Heat Limit Switch
HLS-1100 – Heat Limit Switch Information Sheet – Printer Friendly (PDF)
The HMI Hoyme HLS-1100 – Heat Limit Switch
The HLS-1100 Heat limit Switch can be used in conjunction with a regular appliance attached to the Hoyme HOM – Combustion Air Damper without interfering with it’s normal operation.
Hoyme HLS-1100 Operational Details:
- The Heat limit Switch is placed in-line with the source of 24v Power to the Motor of the Damper
- Usually connected between “R” on the appliance and #5 (blue wire) of the HOM – Combustion Air Damper using regular Thermostat Wire
- The Heat Limit Switch is normally closed but opens when it reaches 130°F cutting the power to the Damper and causing the Damper to drop open
- After it has cooled back down to 115°F the switch returns to the closed position and restores power to the motor causing the Damper to also close
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Wiring Diagrams used with the HLS-1100:
- #1A. Combustion Air Damper (HOM-0x11-SF1) Interlocked to a Furnace and Interconnected to a DHW with a Heat Limit Switch.
- #1B. DHW with Heat Limit Switch (HLS-1100) Interconnected to a Combustion Air Damper (HOM-0x11-SF1), No Furnace.
HLS-1100 – Heat Limit Switch Information Sheet – Printer Friendly (PDF)