Objectives

The primary objective of this tender is to supply, install, replace, commission, test, and train staff on five (5) new heat pump units at Queen Nandi Hospital. The project aims to upgrade and enhance the hospital's heating and cooling systems, ensuring energy efficiency, compliance with standards, and minimal disruption to hospital operations.

Scope

The scope includes:

• Removal and decommissioning of existing heat pumps (5 units)
• Supply, installation, and commissioning of:
• Three (3) new 22 kW heat pumps in the basement plant room
• Two (2) new 43 kW outdoor heat pumps in the auditorium area
• Provision of hydraulic, electrical, control, insulation works, and civil modifications as necessary
• Testing, commissioning, and staff training on the new units
• Ensuring minimal disruption during installation within an occupied hospital environment

Technical Requirements

The technical specifications mandate that:

• All equipment must conform to South African standards (SANS 1352, SANS 5151, SANS 10252-1, etc.) and municipal regulations
• Units must be new, unused, and of high quality, with SABS or international certification
• Capacity, efficiency, refrigerant type (preferably low-GWP like R32 or R454B), and control features must meet specified minimums (e.g., COP ≥ 4.0 for basement units)
• Units should be compatible with existing systems or include redesign if necessary
• Proper integration with existing hot water/heating circuits, including backup systems, fault detection, and BMS interface
• All installations must comply with safety, waterproofing, fire-sealing, and electrical wiring standards
• Commissioning, testing, and staff training are mandatory, with detailed documentation and as-built drawings

Skills Requirements

The tenderer must demonstrate:

• Proven experience in installing and commissioning heat pump systems, with at least two similar projects completed
• Qualified personnel including mechanical, refrigeration, electrical trades with valid trade test certifications
• CIDB Grade 1 ME or higher registration
• Valid SAQCC licenses and refrigerant handling certifications
• Capability to prepare detailed installation, commissioning, and testing plans
• Ability to provide technical support, staff training, and comprehensive documentation