Replacement of 73 Fan Coil Units

19AU9026Q0007_Q&A Q&A and technical clarifications Project number: 19AU9026Q0007 Name: Replacement 73 Fan Coil Units Q1 – Hydronic System Drainage Question: Is the hydronic system planned to be drained and prepared prior to FCU replacement works? Answer: Drainage of the cooling system to the required extent is part of the project’s Scope of Work (SOW) and must be included in the offer. Q2 – Valve Replacement Scope Question: Should valve replacement occur only where necessary after inspection, or is replacement of all valves expected? Answer: Delivery and installation of FCUs including all pipes, valves, actuators, and room controllers — replacement of all valves is part of the project’s SOW. Q3 – Working Hours and Site Access Restrictions Question: Are there restrictions regarding working hours, workforce size, simultaneous work areas, or evening/extended hours? Answer: All work must be performed Monday through Friday, 08:00–17:00. Extended hours may be approved by the COR. Worker count depends on supervisory availability and security regulations. Any complications must be included in pricing; no additional claims accepted except for client-ordered interruptions (see page 7 of SOW). Q4 – Manufacturer of Existing Cooling Equipment Question: Please provide manufacturer of the existing chiller / outdoor cooling equipment. Answer: The existing cooling equipment is manufactured by AIRSTACK / MULTISTACK. Q5 – Model Designation Question: Please provide model designation of the equipment. Answer: The equipment is an air‑cooled packaged chiller, model ASP 75T (2 modules). Q6 – Available Technical Data Question: Please provide any available technical data sheets or equipment schedules. Answer: Refrigerant type: R‑134a; Cooling capacity: 2 × 75 tons. -- 1 of 2 -- 19AU9026Q0007_Q&A Q7 – Glycol Concentration Question: Please confirm glycol concentration within the existing system. Answer: Glycol concentration is 35–45%. Q8 – Drawings or Documentation Question: Please provide any available system drawings or documentation. Answer: No drawings or documentation available (N/A). -- 2 of 2 --