Bulgaria – Repair and maintenance services of building installations – "Subscription maintenance and provision of spare parts and consumables for air conditioners and air-conditioning installations installed in buildings of the Territorial Division of the National Social Security Institute – Lovech"

Opportunity description

The awarding of this public procurement contract aims to ensure optimal microclimate parameters in the work premises in the administrative building of the Territorial Division of the National Social Security Institute – Lovech, and the administrative service center (ASC) of the Territorial Division of the National Social Security Institute – Lovech, Lovech, 44 "Bulgaria" Blvd.; Unified Social Security Archive (USSA) – Teteven, Teteven, 30 "Varshets" St.; IRM office – Troyan, Troyan, 55 "G. S. Rakovski" St.; IRM office – Teteven, Teteven, 2-a "D. Blagoev" St.; IRM office – Lukovit, Lukovit, 1 "Momchilets" St. To maintain constant comfort and the employees’ ability to work, it is necessary to commission post-warranty subscription maintenance and technical servicing of air-conditioning equipment, as follows: Residential air-conditioning equipment with a capacity of up to 14 kW, high-wall installation – 52 units and floor-wall installation – 3 units; The TANGRA EVB-ROT-16-M-ST50 general-exchange ventilation system (heat-recovery unit): Energy-recovery unit with ST 50 mm panel. TANGRA — ЕVB ROT 16M for outdoor installation: - 2 M5/F7 filters - equipment inlet/outlet - pressure switches for "dirty filters" signaling - rotary "air-to-air" heat exchanger with efficiency of ~ 82.3% - 2 EC fans with parameters V=1000 m3/h, at ext. pressure 370Pa, pressure after the refrigerant section 350Pa, 2х780W/380V, control 0-10V, protection IP44 - Roof for outdoor installation of the energy-recovery unit - Dimensions with thermal box 1125/3100/1290mm (W/L/H) + TB-DX: Thermal box with 50mm panel with a four-row refrigerant heat-exchange section measuring 700/400. Qheat.=7.6kW, at condensation temperature Tcond.=43°C with inlet air temperature tin.=14° and outlet air temperature tout.=30°.Qcool.=8.74kW, at evaporation temperature Tevap.=6°C with inlet air temperature tin.=30° and outlet air temperature tout.=16°C - Roof for outdoor installation of the thermal box. Outdoor unit RAS-4HNC2E with parameters: Qcool. (min-max)=10.0(4.5-11.2)kW; Qheat. (min-max)=11.2(5.0-14.0)kW; EER=4.68; COP=5.16; Dimensions 1380/950/370. Commissioned – November 2023. Procedure: open. Estimated value: 8,243.25 EUR. Review the original TED notice for the complete requirement, lots, amendments and attachments.