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| MarketManager » Modeling HVAC Systems |
Q: Can you model a system in MarketManager that preheats O/air, cools it back down and then reheats it?
A:
A:
With MarketManager you can model these unusual situations. You should chose a terminal reheat system, and change any defaults as needed. The TRH system will model both the "induction units" reheating the cool supply and the actual terminal reheat system together.
- Select TRH
- Go to outside air, and remove economizer
- Set outside air % to 100
- Add preheat coil, set switchover at about 120F (means always preheat), set PHT to 114F.
- Give it PH Coil enough capacity
- Make sure boiler will supply PH Coil, RH Coil
- Make sure that HW is not reset, as low HW temps will reduce PHTs.
- Also check HDT, CDT resets, I don't think you want any.
- Check supply air temps in system (HTG SAT is the max SAT coming off the reheats, CLG SAT is the clg coil leaving temp)
- Add zone temp setpoints.
Now check diagnostics and see the air temperatures after the preheat coil, cooling coil and reheat coil.
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