Pelican Connect
- Can I schedule when notifications are active?
- When is a low battery notification generated?
- What does a cool failure notification mean?
- When will a door has been left open notification be generated?
- What does a heat failure notification mean?
- What does a thermostat unreachable notification mean?
- What does an economizer position failure notification mean?
Admin
- Can I pay for multiple site subscriptions at once?
- Can I pay for my subscriptions using a purchase order (PO)?
- How do I change my site type (residential, business, hotel)?
- How do I pay for my site’s subscription?
- What does the Standard Subscription provide?
- What is the Subscription Renewal History?
- Why has my subscription expired?
- How do I view my LTE Gateway Subscription Receipt?
- How do I change my LTE Subscription Email Address?
- How Can I Cancel My LTE Gateway Subscription?
Comfort Control
- How do I adjust a room temperature?
- How do I turn off all thermostats for an emergency?
- How do I turn ON-OFF cooling?
- How do I turn ON-OFF heating?
- How do I turn ON-OFF the Fan? - not done
- What does Cool Running mean?
- What does Economizer Active mean?
- What does Fan Running mean?
- What does Heat Running mean?
- What does Space Satisfied mean?
- What does Waiting mean?
- Why did cooling start on its own? - not done
- Why did heating start on its own? - not done
- Directions on maintaining proper ventilation rates: COVID-19
- What is Outside Ventilation in a schedule?
- Does Pelican adjust an outside damper based on fan speed?
- How do I adjust the CO2 level to generate additional ventilation?
- How do I commission a PEARL for proper ventilation?
- How do I turn off ventilation for all thermostats on a poor outdoor air day?
- What are CO2 Levels?
- What do different CO2 levels indicate ?
- Does Pelican detect CO2 levels as a life safety system?
- How do I adjust my CO2 ventilation configuration?
- What is the Outside Ventilation setting?
Schedules
- Can I schedule a thermostat to a set points beyond its allowable heat or cool range? - not done
- Can I schedule when Fan Circulation Minutes is active?
- What is unoccupied setback in a thermostat schedule?
- How to set set fan to auto during unoccupied setback periods?
- How do I set an a single thermostat's schedule?
- What is Outside Ventilation in a schedule?
- What are the schedule Repeat options?
- What is optimum start?
- Why did cooling start on its own? - not done
- Why did heating start on its own? - not done
- How do I create an event schedule for a single thermostat?
- How do I delete an event scheduled for a single thermostat?
- How do I create an event schedule for multiple thermostats?
- How do I edit a multiple thermostat event scheduled?
- How do I delete a multiple thermostat event scheduled?
- How do I edit an event scheduled for a single thermostat?
- How do I create shared schedules? - not done
- How do I edit a shared schedule?
- How do I create unoccupied set point override periods?
- How do I rename a shared schedule?
- How do I copy an existing shared schedule?
- How do I delete an existing shared schedule?
- How do I create an event schedule for multiple thermostats?
- How do I edit a multiple thermostat event scheduled?
- How do I delete a multiple thermostat event scheduled?
Thermostat
- Can a Pelican thermostat control a floating actuator?
- Can a Pelican thermostat control a two-position actuator?
- Can a Pelican thermostat control a multiple fan speeds?
- Can I "lock-out" compressors based on an outdoor temperature?
- Can I disable or lock a thermostat’s Fan Button?
- Can I disable the thermostat’s internal temperature sensor?
- How do I hide a thermostat on the app?
- How does Pelican assist with freeze prevention?
- How do I control a dual fuel Heat Pump?
- How many Cool Stages do I select for a thermostat?
- How many Fan Stages do I select for a thermostat?
- How many Heat Stages do I select for a thermostat?
- What do I set Heat Needs Fan to?
- What is CO2 Ventilation?
- What is Compressor Lockout?
- What is Cool Range?
- What is Fan Circulation Minutes?
- What is Heat Range?
- What is the difference between Auxiliary and Emergency Heat?
- What should I set a thermostat’s Reversing Valve to?
- What should I set a thermostat’s System Type to?
- What should I set Anticipation Degrees to?
- What should I set Cycles Per Hour to?
- When should I use the thermostat Calibration Degrees?
- What should I set a thermostat’s Zone Controller configuration to?
- What should I set Fan Purge Cycle to?
- What should I set Damper Type to?
- What should I set Reheat Type to?
- What should I set Notification Settings to?
- How to hide a section within an article.
- How can I Delete a Thermostat from a site?
- How do I delete a Wired Temperature Sensor or PEARL Economizer Controller?
- How can I Replace a Thermostat?
- Show all articles ( 18 ) Collapse Articles
Networking
- How do I install a Pelican cellular gateway?
- How do I replace a Pelican Cellular gateway with a Pelican Ethernet gateway?
- Can I set a Pelican gateway for a static IP address?
- Do I need a Public IP address for a Pelican gateway?
- Does a Pelican gateway use a DHCP or static IP address?
- Does a Pelican gateway use Inbound firewall ports?
- How do I change a Pelican gateway from static back to DHCP?
- How do I install a Pelican Ethernet gateway?
PEARL
Zone Coordinator
- Why won’t my zone controller connect?
- What do the lights on the zone controller indicate? - not done
- What does the light on a zone controller's antenna indicate? - not done
- Why is a zone controller unreachable? - not done
- What do the zone controller lights indicate? - not done
- What do the zone controller's antenna lights indicate? - not done
- Zone Controller Dehumidify Sequences
- How does Pelican control a parallel fan powered box during a heating cycle?
- How does Pelican control a series fan powered box during a heating cycle?
- How does Pelican control a zone box during a heating cycle?
- How does Pelican control a parallel fan powered box during a cooling cycle?
- How does Pelican control a series fan powered box during a cooling cycle?
- How does Pelican control a zone box during a cooling cycle?
- How does Pelican control a parallel fan powered box during a ventilation cycle?
- How does Pelican control a series fan powered box during a ventilation cycle?
- How does Pelican control a zone box during a ventilation cycle?
Sensors
OpenAPI
How do I wire a PEARL to control a variable speed fan?
Note:
There is a detailed diagram for this installation in the PEARL’s installation guide.
Type of signal:
The PEARL can adjust a supply fan speed of an HVAC unit based on the active cycle the HVAC unit is in. The type of output from the PEARL is a modulating type; 0-10VDC. The VDC output is proportional to the desired fan speed. For example, if the PEARL outputs 2VDC, then the fan would be at 20% fan speed.
Wiring the PEARL to a Supply Fan Variable Frequency Drive (VFD):
There are a variety of different VFD manufacturers that have their own representative terminals that get wired to. For further assistance outside of this article. contact Pelican Technical Support.
When wiring a supply fan variable frequency drive to a PEARL, you will us the (A2) output from the PEARL to control the fan speed.
- Use a standard 18G unshielded thermostat wire and wire the (A2) output from the PEARL to the 0-10VDC speed input at the variable frequency drive (VFD).
- Use a second 18G unshielded thermostat wire and connect the common (C) terminal from the PEARL to the variable frequency drive’s speed input common (-) terminal.
- All variable frequency drives have a start/stop input. This is normally a 24VDC signal. Because the PEARL only outputs 24VAC, you will need to install a 24VAC normally-open relay at the VFD. Use a third 18G unshielded thermostat wire and connect the (G) terminal at the PEARL to one side of the relay’s 24VAC coil. Use a fourth 18G unshielded thermostat wire and connect the common (C) terminal at the PEARL to the other side of the relay’s 24VAC coil. Find the 24VDC power source at your variable frequency drive. Wire a new 18G unshielded thermostat wire from the 24VDC power source to one side of your normally-open relay’s contact pin. Find the 24VDC start/stop input terminal at your variable frequency drive. Wire a new 18G unshielded thermostat wire from the other side of your normally-open relay’s contact pin to the start/stop input terminal at the variable frequency drive.
When wired correctly, when the PEARL wants to enable the supply fan the follow will occur:
- The PEARL’s (G) output will enable, placing 24VAC onto the normally-open start/stop relay’s coil, closing the relay’s contact. When the relay is closed, 24VDC will be made to the 24VDC start/stop input at the variable frequency drive. This should place the variable frequency drive into RUN mode and the supply fan should run at a minimum at the variable frequency drive’s configured minimum fan speed.
- The PEARL’s (A2) output will send a DC voltage to the 0-10VDC speed input of the variable frequency drive. The variable frequency drive should run the supply fan based on the voltage output of the PEARL. For example, if the PEARL outputs 8VDC, the supply fan should be at 80% speed.
Example Diagram
Below is an example diagram for wiring a variable frequency drive to a Pelican PEARL. Note that this diagram only represents the required connections from the PEARL to the variable frequency drive. Many frequency drives require additional jumpers to be installed and dip switches to be set correctly at the drive. Please reference the variable frequency drive’s manufacturer’s installation documentation for more detail OR contact Pelican Technical Support for further assistance.