Heat pump(s) for district heating production

The scope of supply is a heat pump unit or heat pump plant containing several heat pump units to produce approximately 8 to 10 MWth of district heating. In later references to the heat pump unit, the same applies to a solution consisting of multiple heat pumps. The cooling source for the heat pump is closed cooling water circuit. The scope of supply contains all the necessary auxiliary equipment with piping and cabling (cabling from terminal boxes to control panels) of heat pump unit excluding the main pipe work, civil works and power supply, but including commissioning and the test run completed (both approved by the Purchaser) and ready for commercial operation at the Purchaser’s site. All materials, components and solutions used in the proposed solution shall be proven functional and reliable. All necessary dimensions, load and process information for designing the civil constructions and foundations is included to the scope of Supply. The heat pump is to be installed on a steel base frames provided with motor, compressor and heat exchangers (evaporator, condenser, auxiliary cooling) etc. to form a complete and well operating heat pump unit. The system shall be designed to minimize loss of refrigerant. Welded fittings are in preference to flanged connections when possible. European standards such as EN 378 must be complied with. The refrigerants tendered shall be safe and suitable for indoor installations: Safety classifications A1 and A2L are accepted. GWP < 500 is required to avoid substances under HFC phase down. The process delivery of the plant with auxiliary systems shall include at least but not limited to the following equipment, their installation, commissioning and testing: - heat pump unit with complete connections with all necessary materials (bolts, nuts etc) and works of fixings, erections and installations (assembly of unit, painting and thermal insulation) - refrigerant system with all needed auxiliary equipment and piping - lube oil system for required lubrication, with all needed auxiliary equipment and piping - cooling water system, with all needed auxiliary equipment and piping - all pipe work of the unit inside the delivery limits - complete protection system for heat pump unit - control, indication and measurement equipment with instrumentation and supervision system with all necessary functions, auxiliaries and accessories - motor line equipment including necessary cubicles and terminal boxes with all necessary auxiliaries and accessories - protective line side surge arrester and capacitors with all necessary auxiliaries and accessories - all cabling inside the scope of supply of the Supplier’s equipment - complete design of the process, design documents, instructions, operating and maintenance manuals etc in the scope of supply are included in the delivery - spare parts according to Supplier’s recommendation for operation of two (2) years (to be listed with unit prices with the tender by the Supplier) - all necessary special tools needed for installation, erection, maintenance etc of equipment and systems shall be included in the delivery (separate list shall be submitted with the tender by the Supplier) - factory tests and site tests of supplied equipment (separate list shall be submitted with the tender by the Supplier) - commissioning and test run (to be approved by the Purchaser) - training of the Purchaser’s operating and maintenance staff.

The contracting entity reserves the right to invite to the procurement procedure a minimum of three (3) and maximum of five (5) bidders. If there are more than five (5) bidders the contracting entity reserves the right to select those five (5) bidders that have the largest number of valid references during the last three (3) years. The candidate must meet all the requirements set out in Section III.1.3. subsections 1 and 2. Any qualifications is made in such a way that the candidates to be selected to the bidding process are ranked based on the number of references in Section III.1.3 Technical and professional ability subsection 3. If two or more candidates have the same number of references calculated based on the subsection 3, they are ranked based on the number of references set out in subsection 1 that exceed the mandatory minimum requirements. The equivalence and number of references are evaluated based on the written report submitted by the candidate.