HVAC Relays Short Form 2020 V1.0

Product catalog summary

Overview
Broyce Control provides monitoring, control, and protection solutions for HVAC systems, focusing on compressors, air handling units, chillers, rooftop systems, heat pumps, and refrigeration systems. Their products are UL listed and made in Britain, ensuring quality and reliability.

3-Phase Compressor Protection
The document outlines solutions for protecting 3-phase compressors using an auxiliary supply. Key features include:

Monitoring for phase loss, phase reversal, and voltage imbalance.
Staggered starting to prevent simultaneous compressor startups.
Anti-short cycle protection to prevent rapid recycling of compressors.

These solutions ensure maximum protection and smooth operation of HVAC equipment.

Product Features
Several products are highlighted, each with specific features:

LPMR/AUX: Wide voltage range monitoring, low-cost installation, and compact design.
THREE PHASE & TIME DELAY: Selectable nominal voltages, adjustable restart delay, and protection against phase loss and reverse running.
LXPRC/S/RD: Adjustable timer for preventing nuisance tripping and easy installation.
LEDO & LEDO/2: Delay on operate with selectable time ranges and LED indication.
DOB: Compressor lockout and anti-short cycle protection with fixed time delay.

Additional Solutions
Broyce Control offers bespoke solutions tailored to specific HVAC applications, ensuring products operate as required and can be branded for companies.

Monitoring and Timing
The document emphasizes the importance of monitoring voltage and current to protect compressors and motors from single phasing and current unbalance. Timing relays are available for controlling specific HVAC equipment.

Contact Information
Broyce Control Ltd. is based in Wolverhampton, UK, and can be contacted via phone, fax, or email. More information is available on their website.

Catalog excerpts

BROYCE CONTROL HVAC SOLUTIONS Passionate about protection and control MONITORING, CONTROL & PROTECTION SOLUTIONS FOR SCROLL/SCREW COMPRESSORS AIR HANDLING UNITS CHILLERS ROOFTOP SYSTEMS HEAT PUMPS REFRIGERATION SYSTEMS

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APPLICATION NOTES ULTIMATE PROTECTION SOLUTIONS 3-Phase Compressor protection (with Aux. supply) Staggered starting of multiple compressors Powered by an external 24V auxiliary source (i.e. from control panel transformer), provides monitoring of the 3-phase compressor supply. Protects compressor against single-phasing (phase loss/blown fuse), rotating in the wrong direction (phase reversal) and overheating (voltage imbalance). Prevents multiple compressors starting simultaneously but adding an intentional delay before starting. Each compressor is fitted with its own 3-phase monitoring relay and...

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HEAT PUMPS FIND ME ONLINE: www.broycecontrol.com 3-PHASE MONITORING Compressor Protection (with delayed restart) Key Features: Selectable nominal voltages - 2 ranges available 200 - 240VAC or 380 - 460VAC L>L Monitors own supply - detects if phases exceed the fixed Under or Over voltage trip levels Detects incorrect phase sequence and loss Adjustable Restart time delay (1 - 500s) Benefits: ü Protects compressor against loss of phase (single-phasing) and reverse running ü Choice of selectable nominal voltages for global applications ü Adjustable Restart delay - allows for staggering of multiple...

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SOLUT HVAC Earth Leakage Protect installations against injury to personnel and damage to equipment due to earth leakage faults. FURTHER SOLUTIONS Monitoring relays for under or over voltage and current sensing. Benefits: ü Maximises safety Benefits: ü Protect compressors and motors from single phasing and current unbalance ü Multi-voltage supply FIND ME ONLINE: www.broycecontrol.com FIND ME ONLINE: www.broycecontrol.com Customised Solutions Choice of timing relays for control of specific HVAC equipment such as compressors, exhaust fans, etc. Need something different for your HVAC application?...

Open the catalog to page 4

All Broyce Control catalogs and technical brochures

LV Electrical Relays Short Form 2020 V1.0
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CONTROL RELAYS
4 Pages
EARTH LEAKAGE RELAYS
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P9600 Shortform
4 Pages
P50 shortform
4 Pages
TIMERS
4 Pages
THREE PHASE RELAYS
4 Pages
BHRM
1 Page
LEIN
1 Page
LEDO
1 Page
LRTM/2
1 Page
LART
1 Page
LMMT
1 Page