Objectives

The primary objective of this tender is to supply and install heat pumps and hot water tanks at Murchison Hospital, ensuring efficient hot water provision through modern heat pump technology. The project aims to improve energy efficiency, reduce operational costs, and ensure reliable hot water supply in the hospital facilities.

Scope

The scope includes:

• Supply and installation of heat pumps (22kW and 1500L hot water vessels) in designated hospital plantrooms and casualty areas.
• Removal of existing steam and hot water systems, including dismantling redundant components.
• Reconfiguration of hot water reticulation systems to integrate new heat pumps and vessels.
• Provision of electrical connections, control panels, and safety devices.
• Commissioning, testing, and handover of fully operational systems.
• Provision of maintenance manuals and guarantee for 12 months.

Technical Requirements

The technical specifications include:

• Supply of vertical hot water storage tanks (6mm mild steel, epoxy coated, insulated with mineral wool, stainless steel cladding).
• Hot water piping of copper (SANS 460 Class 0), insulated with mineral wool, with galvanised cladding.
• Air-to-water heat pumps capable of heating water to 55–65°C, with COP ≥ 3, automatic defrost, safety features, and noise level ≤ 70dB.
• Electrical connections with 25mm² cables, 80A circuit breakers, and isolators.
• Control panels with user interface including on/off, timer, temperature set point, error status, ambient and exhaust air temperatures.
• Compliance with relevant standards: SANS 347, 10142, 10400, Occupational Health & Safety Act, and local fire regulations.
• Installation in accordance with specifications, including civil, electrical, and mechanical requirements.
• Testing, commissioning, and guarantee for 12 months.

Skills Requirements

The tenderer must demonstrate:

• Proven experience and competence in installing heat pumps and hot water systems, with relevant project references.
• CIDB contractor grading of 2ME or higher.
• Technical expertise in electrical and plumbing trades, supported by valid trade test certificates.
• Qualified personnel with a minimum of 5 years post-qualification experience.
• Capability to prepare detailed method statements covering installation procedures, quality control, steam termination, and commissioning.
• Provision of comprehensive CVs for key technical staff, demonstrating relevant experience.
• Ability to manage project timelines, safety, and quality standards effectively.