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46 

 

Outside RH Not 

Configured 

Enthalpy economizer 
is configured on the 
RTULink but an 
outside air relative 
humidity sensor is not 
configured. 

Verify that an outside air relative humidity sensor is connected to one of 
the RTULink inputs.  Install and connect one if one has not already 
been connected.  Once the sensor is connected, configure the sensor 
via the onboard HMI.  For details on how to configure an RTULink 
input, view the FUNCTIONALITY portion of this manual 

Return RH Not 

Configured 

Differential enthalpy 
economizer is 
configured on the 
RTULink but a return 
air relative humidity 
sensor is not 
configured/connected. 

Verify that a return air relative humidity sensor is connected to one of 
the RTULink inputs.  Install and connect one if one has not already 
been connected.  Once the sensor is connected, configure the sensor 
via the onboard HMI.  For details on how to configure an RTULink 
input, view the FUNCTIONALITY portion of this manual 

Invalid Schedule 

RTULink has received 
a schedule from 
CASLink that is 
invalid for its current 
control mode (i.e. a 
set point schedule 
has been passed and 
the board 

doesn’t 

support set points). 

Login to CASLink and ensure that all RTULink board data has 
timestamps that are current.  If the board is currently reporting all data, 
overwrite the current schedule with an “OFF” control mode and pass a 
new one. 

Gap In Schedule 

 The RTULink has 
been disconnected 
from CASLink and 
there is a gap in 
scheduling. 

Check all RTULink communication network wiring.  If the wiring is 
accurate, ensure the communication module is connected to CASLink 
by viewing the latest heartbeat in CASLink. 

Stat Missing 

(Return, Outside, 

Intake, Discharge, 

Space) 

If the temperature 
sensor signal being 
sensed is too low, a 
missing fault will be 
active. 

Install and wire sensor. 
Check for faulty wiring to the sensor. 

Stat Broken 

(Return, Outside, 

Intake, Discharge, 

Space) 

If the temperature 
sensor signal being 
sensed is too high, a 
broken fault will be 
active. 

Install and wire sensor. 
Check for faulty wiring to the sensor.  

Space HMI Missing 

One of the HMIs in 
the system is not 
connected properly, 
or one of the settings 
is not properly set. 

Verify that the “# of HMIs” is set correctly. 
Verify there is no damage to the HMI(s). 
Check for loose or damaged wiring to the HMI(s).  
If space temperature is being utilized, make sure “HMI Averaging” is set 
to ‘On’ for all space HMIs. 

HMI Config Error 

HMI is not connected, 
or HMI is assigned 
incorrectly. 

Install HMI or change HMI address using bottom 2 buttons on HMI. 

 

 

Содержание RTULink

Страница 1: ...rior and exterior damage and if found report it immediately to the carrier Also check that all accessory items are accounted for and are damage free WARNING Installation of this control panel should o...

Страница 2: ...2...

Страница 3: ...ontrol 24 Monitor Only 24 External Mode 24 Emergency Heat 24 FUNCTIONALITY 25 Info 25 Configuration 25 Faults 29 Reboot 29 Main Board HMI Menu Tree 30 Space HMI and Remote Room Sensor Installation 35...

Страница 4: ...apacity 5 The invoice is not paid within the terms of the sales agreement The MANUFACTURER shall not be liable for incidental and consequential losses and damages potentially attributable to malfuncti...

Страница 5: ...to during installation testing servicing and repairing of these boards Component damage may result if proper procedures are not followed To ensure proper operation do not install any of the monitorin...

Страница 6: ...y offering remote and dynamic monitoring control and scheduling Components whose processes were previously invisible such as damper economizer powered exhaust demand control ventilation and more are e...

Страница 7: ...ing or rerouting existing RTU wiring Secure the board with four of the provided self tapping screws Become familiar with the terminal labeling on the RTULink RTULink Control Kit Thermistors Figure 2 s...

Страница 8: ...which will provide the most accurate reading A hole should be drilled in the return duct so that the sensor probe can be inserted through the duct and into the return airstream Two of the provided sel...

Страница 9: ...the remaining subsections to determine which features will repurpose board terminals Figure 5 RTULink RTU Wiring Table 1 RTULink to RTU Wiring Terminals TERMINAL LABEL SIGNAL VOLTAGE RTULINK INPUT OUT...

Страница 10: ...o individually disconnect the incoming thermostat wire and connect it on the THERMOSTAT side of the RTULink Do not disconnect all of the wires at once disconnect wires one at a time so it is easier to...

Страница 11: ...reas near diffusers areas near appliances areas more than 6 ft above the floor etc Route the thermistor wire to the RTULink and connect it to the and C terminals thermistor input is not polarity sensi...

Страница 12: ...12 Figure 10 Space Temperature RTULink Wiring Figure 9 Space Thermistor Detail Plastic Housing Wall Mount...

Страница 13: ...onnect the RTULinks together using the CAT5 cable If an RTULink is the last in a line it will only have one CAT5 cable connected to it and will require an end of line resistor PN EOL120A in its unused...

Страница 14: ...holes in the junction box should be completely sealed with caulk to prevent humid air from coming in contact with the sensors circuit board Figure 12 shows an install detail for a wall mounted temper...

Страница 15: ...uld remain OFF These dip switches can be seen in the sensor detail in Figure 14 Once the sensor is wired to an input enter the configuration menu of the RTULink via the onboard HMI and configure the c...

Страница 16: ...or connecting conduit to the knockout make sure that they are properly sealed with liquid tight fittings to prevent moisture from entering the sensor housing Standard 18 5 thermostat wire should be us...

Страница 17: ...ng wire back to the RTULink control board Standard 18 5 thermostat wire should be used for sensor wiring The sensor has a bank of eight dip switches that control the range of the output voltage of the...

Страница 18: ...of the airways Once the sensor is in its final position secure it to the duct with self tapping screws Wire nuts will be provided with the sensor so that wire connections can be made The sensor will...

Страница 19: ...80 amp Connect the positive and negative terminals of the current transducer to the positive and negative terminals of a 0 10VDC input on the RTULink PN A CTV 50 is used to measure components in the...

Страница 20: ...hich are explained in Table 3 For enthalpy economizers enthalpy is calculated using temperature and relative humidity In Table 3 the outside air enthalpy is represented as OAE and the return air entha...

Страница 21: ...s not provide power to the powered exhaust it only signals an ON OFF state Powered Exhaust 0 10VDC If the RTULink will be using a 0 10VDC as the control signal for a powered exhaust it must be configu...

Страница 22: ...this Once this feature is enabled the RTULink must we wired accordingly Wire the DEFROST terminal on the TO THERMOSTAT side of the RTULink to the RTU occupied terminal this will send the occupied sig...

Страница 23: ...is performed only once at the beginning of the startup procedure If a hardware configuration parameter is incorrectly set or if the RTULink board is switched from one RTU to another or if Hardware Co...

Страница 24: ...o action will be taken to correct the fault An external thermostat is required in order to operate in this control mode External Mode External mode is a hybrid control mode It offers the ability to co...

Страница 25: ...page 25 for nomenclature explanations used in this menu Hardware Config The hardware configuration settings are displayed in this menu No settings or parameters can be changed in this menu current set...

Страница 26: ...MI when the screen is inactive HMI x Avg Enable Sets if averaging is ON or OFF Heating SP The heating set point is the default set point that the RTULink defaults to if it ever comes out of a schedule...

Страница 27: ...llowed to turn OFF This timer is intended to reduce condenser cycling and increase life cycle of the cooling components The timer is in a MM SS format and is adjustable from 00 00 to 20 00 Min Heat Of...

Страница 28: ...d View APPENDIX C for enthalpy economizer operation and logic Dry Bulb Band Dry bulb band is the modulation band for the dry bulb economizer in degrees Fahrenheit View APPENDIX C for dry bulb economiz...

Страница 29: ...s View the current transducer documentation to determine the amperage per volt supplied by the current transducer Diagnostics Diagnostics mode allows for binary and analog inputs to be turned ON OFF a...

Страница 30: ...30 Main Board HMI Menu Tree...

Страница 31: ...31...

Страница 32: ...32...

Страница 33: ...33...

Страница 34: ...34...

Страница 35: ...r surface mounted or recessed mounted HMIs have a built in temperature relative humidity RH sensor which is typically used to help control the automatic function of the unit The HMI can also be config...

Страница 36: ...r to change or set certain temperature and configurations on the unit Any changes within this menu do not require a reboot to take effect Factory settings Requires a password to enter this menu 1 1 1...

Страница 37: ...tput signals Y and O B are used Standard output signals Y and W are used HP O B Mode For heatpump units this will set the reversing valve to activate for heating or cooling Heat Stages Sets the number...

Страница 38: ...upancy can be overridden on the HMI Room Ovrd Duration Length of override timer If override is active it can be manually stopped by pressing the end override button on the HMI The default setting is 1...

Страница 39: ...is selected temperature and humidity will be used to control the economizer If Dry Bulb is selected the temperature will be used to control the economizer Select None if an economizer is not equipped...

Страница 40: ...For a modulating powered exhaust the speed of the exhaust will modulate linearly as the economizer damper opens from this threshold to fully open 100 open Enable Max HP Setting to enable or disable ma...

Страница 41: ...41...

Страница 42: ...42...

Страница 43: ...43...

Страница 44: ...44...

Страница 45: ...nsor is faulty Discharge Temp Not Connected Temperature sensor has been disconnected or has failed Verify correct resistance across Type II 10k thermistor and replace if the sensor is faulty Out of Sc...

Страница 46: ...SLink and ensure that all RTULink board data has timestamps that are current If the board is currently reporting all data overwrite the current schedule with an OFF control mode and pass a new one Gap...

Страница 47: ...20 amp or 0 50 amp and one with an adjustable range of 0 100 amp 0 200 amp or 0 250 amp The measurable range is based on the position of the jumper on the top of sensor L M or H respectively The range...

Страница 48: ...t sticks out of the sensor should always be pointed downward to protect it from the elements To improve sensor readings mount this in a location that will be free from the elements and direct sunlight...

Страница 49: ...49 APPENDIX A NOTE DO NOT ROUTE COMMUNICATION WIRING WITH HIGH VOLTAGE WIRES Daisy Chain Topology Figure 29 Daisy Chain Ideal Configuration Star Topology Figure 30 Star...

Страница 50: ...50 APPENDIX B 1 Strip the CAT5 cable and arrange the wires in the color configuration seen below Figure 31 Straight Through Wiring Configuration Figure 32 RJ45 Pinout...

Страница 51: ...Ensure that the wires are completely inserted into the connector You can accomplish this by looking at the tip of the RJ45 connector the end without the opening and being able to see the copper ends o...

Страница 52: ...52 APPENDIX C Fixed Dry Bulb Economizer Figure 34 Fixed Dry Bulb Economizer Operation...

Страница 53: ...53 Differential Dry Bulb Economizer Figure 35 Differential Dry Bulb Economizer Operation...

Страница 54: ...54 Fixed Enthalpy Economizer Figure 36 Fixed Enthalpy Economizer Operation...

Страница 55: ...55 Differential Enthalpy Economizer Figure 37 Differential Enthalpy Economizer Operation...

Страница 56: ...ddress Address City City State State Zip Zip Phone Number Phone Number Fax Number Fax Number Contact Contact Purchase Date Startup Date MAC Address Static IP if Assigned Maintenance Date Service Perfo...

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