The electrical scope that HVAC contractors hand off.
HVAC contractors supply and mount the equipment.
The electrical scope — power feeds, control wiring, interlocks, and BAS integration — is where Pro Call Electric comes in.
Our HVAC electrical scope includes:
- Power connections: dedicated branch circuits for RTUs, AHUs, exhaust fans, MAUs, FCUs, and chillers — properly sized to nameplate data and CEC requirements.
- Control wiring: thermostat and BAS sensor wiring, zone valve wiring, and damper actuator wiring.
- Variable frequency drives (VFDs) for HVAC: fan speed control drives for AHUs, exhaust fans, and cooling tower fans — installation, wiring, and commissioning.
- Building Automation System (BAS) integration: wiring to BAS controllers, protocol commissioning (BACnet, Modbus), and point verification.
- Freeze protection and heat trace: heat trace on fresh air intakes, condensate lines, and outdoor HVAC components.
- Emergency contacts and interlocks: fire alarm interface, smoke detector shutdown wiring, and fire/smoke damper wiring to NFPA 90A requirements.
- Unit heater and makeup air unit (MAU) wiring: electric resistance heaters, gas-fired MAU controls, and combustion air fan wiring.
Alberta winters demand HVAC systems that work at -30°C — controls included.
In Alberta, HVAC failures in winter aren’t just uncomfortable — for commercial buildings, they can lead to pipe freezing and property damage.
For industrial facilities, they affect pressurisation and fire protection integrity.
HVAC controls in Alberta need: Pro Call Electric has been connecting and commissioning HVAC electrical systems in Alberta for 20 years — we understand what the Alberta winter asks of these systems.
- Low-temperature alarm setpoints that trigger before freeze damage occurs.
- Reliable heat trace on any outdoor air component that can freeze.
- Backup heating strategies that work when primary systems fail.
Electrical expertise that understands HVAC.
- Complete electrical scope: power distribution, control wiring, VFDs, and BAS integration — all in one contract.
- BAS protocol experience: BACnet, Modbus, and LonWorks interface commissioning.
- HVAC and refrigeration code knowledge: CEC requirements for HVAC circuits and Alberta Mechanical Code coordination.
- Master Electricians Alberta and FSR BC: qualified for commercial and industrial HVAC electrical scopes.
- CEC permit compliance: all work permitted and inspected to Alberta Safety Codes Act requirements.
