Existing building added VAVs and hot water coils now new addition too cold????.
Whats up I have a issue with a building we did a TI in we added about 10 new vavs that run off existing boiler with bypass valves self balancing valves and a new unit on roof for cooling basically a reheat system with no morning warm up everything was engineered. The rest of the building is fine all zones are doing well with same basic set up except of course the new system we put in. On my way home I stop by real quick 1st time at building to get a look at things so I find water supply cold to box boiler set pretty low raised to 170 also found osa dampers opened quite a bit choked down temporarily to see what happens confirmed operation of a couple hot water valves we messed around with a couple boxes with mins and max cfms still zones stayed cold I had 165 supply water at coil in and 140 out with 88 supply on one box with supply air from unit 61 degrees boxes on other floors are all 95 plus I am also finding out if airbalance was done and water balance but I saw auto balance hwc at box and confirm correct boxes etc . Any input or anything I am missing they are closed till after newyears so I will try and gather some info from plans or anything else to look at before I go to the engineers to say boxes are to small?thanks