Work project on reconstruction of the heating system of the building

Work project on reconstruction of the building heating system (complete replacement) is required. Linking the projected system with nature, calculating the coefficients of heat transfer and heat loss, calculation of heating devices, hydraulic calculation, placement of risers and devices on the plans, solution of the system scheme with drawing, all other works included in the scope of development of the working project. Provide for the restoration of the decoration of the premises after the installation work.
Main characteristics of the object: Building 3 floors (2 floors and basement), total area of 2000 m2. There's no ventilation. Thickness and material of walls: brick 600 mm.
From the initial data there is: passport, design assignment, inspection act (heat supply conditions), photos of the main existing nodes. A sketch showing the places of risers.
Desirable deadline: no more than 2 weeks.