Carrier 50FF Series Control Manual

Also see for 50FC Series: Installation, operation and maintenance instructions Controls, Start-Up, Operation and Troubleshooting User manual Service and maintenance instructions Installation, operation and maintenance instructions

Contents

Carrier 50FF Series Control Manual Manual pdf 34 page image

3413 - OPTIONAL FUNCTIONS OF CONTROL13.2. Zoning of the air flowThe zoning of the air flow up to 4 different zones is done by usinga board assembled in a separate box from the unit 50FF/FC. Thisfunction allows to adapt the indoor air flow to the requirementsof the installation.A different flow rate can be set for each zone. The sum of theseflows must be found within a range:● Maximum total flow: by default 100%.● Minimum total flow: by default 35%. A minimum air flow below35% can never be set to ensure the proper functioning of theunit. Although the flow demanded by the active zones is lessthan 35%, the unit will operate with this flow.Electricalcabinet50FF/FCzone 1(addr.11) Servo. zone 1Servo. zone 2Servo. zone 3Servo. zone 4zone 2(addr.12)zone 3(addr.13)zone 4(addr.14)Zoning box connectionsThe installer must carry out the following connections:● Connection of the zone terminals:- Power supply (the same as the control board) at 230Vac50/60Hz (L&N): 2 wires (section 0.5 at 1.5 mm 2 ).- Communication (RX+/TX+ & RX-/TX-): shielded cable typeAWG20 or AWG22 with 1 braided pair + drainwire + shielding(e.g., model BELDEN 7703NH).Zone terminals can be installed at a maximum distance of 100metres from the zoning box.These terminals are configured with their correspondingaddress in the factory. In the unlikely event of a communicationsfailure the screen will display “Cn”. Please make sure to checkconnections and the firmware version.The main screen shows the ambienttemperature, operating mode, time and dayof the week.The temperature setpoint for this zone canbe modified with the keys.Keys and combinations in the zone terminalsThese terminals are the same as the user’s terminal (optional).Refer to Chapter 2 “User interfaces” for more information on itsoperation.Screens displayed on each terminal zoneIn addition to view the main screen, it is possible to display otherscreens through the set that is activated by pressing the key.The following values will be shown with each press:The electronic control will mange the air flow and the capacitydepending on:● The sensors of the cooling circuits.● The probes of ambient temperature built-in the zone terminals(the location of the terminal is important for the measured value).● The setpoint temperature set by the user for each zone.● The number of active zones.According to the obtained values, the control will order the openingor closing of the supply dampers of each zone independently.The following screen shows the temperaturesetpoint for this zone.This screen shows the zone that correspondsto the terminal.This screen shows the regulation bandassociated with the temperature setpoint.The regulation band for this zone can bemodified with the keys.This screen shows if there is an active alarmby means of a code.Refer to the codes in the “alarms list” ofchapter 15.This display shows the delay set for theopening/closing of the damper.This delay an be modified with thekeys.These terminals allow for schedule programming. See Chapter 9for more information.