Control Panels for Building Automation

Sterling Made builds UL 508A control panels for commercial HVAC systems, chiller plants, BMS integration, lighting controls, and energy management applications.

Panel Types

Chiller plant control panels — Chiller staging, primary/secondary chilled water pumps, condenser water pumps, cooling tower fans
AHU panels — VFDs for supply and return fans with duct static pressure, discharge air temperature, and CO2 inputs
BMS integration panels — Protocol conversion and I/O consolidation bridging standalone equipment to BACnet/Modbus BMS
Lighting control panels — Relay/contactor-based panels for area lighting, scheduling, daylight harvesting
Energy management panels — Power monitoring with CTs, demand limiting, load shedding, sub-metering per ASHRAE 90.1

Common Specifications

Specification	Typical Requirement
Enclosure	NEMA 1 or NEMA 12 (indoor); NEMA 3R for rooftop/outdoor
Voltage	208V 3-phase for smaller motors, 480V for larger chiller plants
Communication	BACnet MS/TP or BACnet/IP, Modbus RTU/TCP, LonWorks (legacy)
BMS integration	Tridium Niagara, Johnson Controls Metasys, Siemens Desigo, Honeywell EBI
Energy codes	ASHRAE 90.1, Massachusetts Stretch Energy Code, IECC
Metering	Schneider PM5xxx, Continental Controls WattNode, Veris H8036

Example Project

Chiller Plant Optimization Panel

A property management company operating a 200,000 sq ft commercial office building in Massachusetts upgraded controls for two 300-ton centrifugal chillers, three primary chilled water pumps, two secondary distribution pumps, and two condenser water pumps. Sterling Made built a 480V motor control panel with ABB ACS580 VFDs (7.5–30 HP) for all seven pumps, and a 120V controls panel with a Tridium JACE 8000, 24 DI, 12 DO, 16 AI, and 8 AO. BACnet/IP communication to the building's BMS. SCCR calculated per UL 508A Supplement SB and marked per NEC Article 409.110.

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