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Hi everyone I'm trying to model an existing building in eQuest 3.65.

The building has a chilled water loop and a hot water loop (the same pumps changeover to pump HW in winter and CHW in summer).

All apartments have a non-ducted 2-pipe Fan Coil Unit. Nothing controls the coil (there's no 2-way valve), there's just a fan selector (LOW-SPEED/HI-SPEED/OFF), and there is no outside air being supplied to the apartments.

I'm struggling to understand how to properly model this in eQuest:

• Should I create one HVAC SYSTEM (type FCU) per zone? Or one FCU system serving all of my zones? (Both seem to work, but I'm guessing there could be a drawback to using one versus the other)

• What is the easiest way to ensure the outside air is zero?

• How should I configure the FCU to mimic as closely as possible the (lack of) controls I have?

Thanks for any insight you can provide!

Hi everyone I'm trying to model an existing building in eQuest 3.65.

The building has a chilled water loop and a hot water loop (the same pumps changeover to pump HW in winter and CHW in summer).

All apartments have a non-ducted 2-pipe Fan Coil Unit. Nothing controls the coil (there's no 2-way valve), there's just a fan selector (LOW-SPEED/HI-SPEED/OFF), and there is no outside air being supplied to the apartments.

I'm struggling to understand how to properly model this in eQuest:

• Should I create one HVAC SYSTEM (type FCU) per zone? Or one FCU system serving all of my zones? (Both seem to work, but I'm guessing there could be a drawback to using one versus the other)

• What is the easiest way to ensure the outside air is zero?

• How should I configure the FCU to mimic as closely as possible the (lack of) controls I have?

Thanks for any insight you can provide!

Hi everyone I'm trying to model an existing building in eQuest 3.65.

The building has a chilled water loop and a hot water loop (the same pumps changeover to pump HW in winter and CHW in summer).

All apartments have a non-ducted 2-pipe Fan Coil Unit. Nothing controls the coil (there's no 2-way valve), there's just a fan selector (LOW-SPEED/HI-SPEED/OFF), and there is no outside air being supplied to the apartments.

I'm struggling to understand how to properly model this in eQuest:

• Should I create one HVAC SYSTEM (type FCU) per zone? Or one FCU system serving all of my zones? (Both seem to work, but I'm guessing there could be a drawback to using one versus the other)

• What is the easiest way to ensure the outside air is zero?

• How should I configure the FCU to mimic as closely as possible the (lack of) controls I have?

Thanks for any insight you can provide!

Hi everyone I'm trying to model an existing building in eQuest 3.65.

The building has a chilled water loop and a hot water loop (the same pumps changeover to pump HW in winter and CHW in summer).

All apartments have a non-ducted 2-pipe Fan Coil Unit. Nothing controls the coil (there's no 2-way valve), there's just a fan selector (LOW-SPEED/HI-SPEED/OFF), and there is no outside air being supplied to the apartments.

I'm struggling to understand how to properly model this in eQuest:

• Should I create one HVAC SYSTEM (type FCU) per zone? Or one FCU system serving all of my zones? (Both seem to work, but I'm guessing there could be a drawback to using one versus the other)

• What is the easiest way to ensure the outside air is zero?

• How should I configure the FCU to mimic as closely as possible the (lack of) controls I have?

Thanks for any insight you can provide!