Objectives

The primary objective of this tender is to supply, replace, install, test, commission, and train staff on seven (07) heat pump units at Queen Nandi Hospital. The project aims to upgrade and optimize the hospital's heating systems through the provision of modern, efficient heat pumps, ensuring compliance with relevant standards and standards, and enhancing operational capacity.

Scope

The scope encompasses the full lifecycle of the heat pump units, including:

• Supply of seven (07) heat pump units (including outdoor and indoor units)
• Replacement of existing heat pumps at specified locations (Basement Plant, Auditorium, Philani Clinic)
• Installation of new units with all associated hydraulic, electrical, and control works
• Testing, commissioning, and performance verification of installed units
• Training of hospital staff on operation and maintenance
• Provision of documentation, drawings, and certification (including compliance certificates)

Technical Requirements

The technical specifications include but are not limited to:

• Heat pumps with capacities approximately 20 kW (Basement) and 38 kW (Auditorium and Philani Clinic)
• Units must conform to South African National Standards (SANS) and municipal regulations
• Use of environmentally friendly refrigerants such as R410A or low-GWP alternatives (e.g., R32, R454B)
• Efficiency minimum COP of 4.0 to 4.2 at rated conditions
• Units must be suitable for outdoor or indoor installation as specified
• Inclusion of safety features: high/low pressure cut-out, overload protection, anti-freeze, phase-loss detection
• Hydraulic and control systems integrated with existing hospital systems, including sensors, valves, insulation, and backup systems
• Compliance with SANS 1352, SANS 5151, SANS 10252, SANS 10400 series, and relevant electrical and plumbing standards
• Provision of detailed installation, commissioning, and testing plans
• Performance testing including COP verification and 72-hour continuous operation
• Training manuals and as-built documentation provided post-installation

Skills and Skills Requirements

The successful bidder must demonstrate:

• Proven experience in installing and commissioning heat pump systems in healthcare or similar environments
• Qualified technical personnel with relevant trade certificates (e.g., refrigeration, electrical, plumbing)
• Capability to design and implement hydraulic, electrical, and control systems compliant with South African standards
• Ability to prepare detailed technical documentation, including drawings, wiring diagrams, and performance curves
• Knowledge of environmental and safety regulations, including refrigerant handling and electrical safety
• Capacity to provide ongoing support, maintenance, and staff training
• Compliance with CIDB Grade 1 ME or higher for relevant trades