Price IZ2 User manual

MANUAL – INSTALLATION + SERVICE
Power and Control Module
Interior and Perimeter Zones Cooling and Heating – IZ2 & PZ1
v100 –Issue Date: 02/12/24
© 2024 Price Industries Limited. All rights reserved.

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priceindustries.com |PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING - Manual
PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
PRODUCT OVERVIEW
PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
TABLE OF CONTENTS
Introduction
In this manual, you will find technical descriptions and
diagrams of underfloor system components along with
their installation instructions. Practical guidelines and
recommendations are also provided. If more information is
required about this equipment, please contact a Price sales
representative.
General Safety Guidelines
This document is intended for use by owner-authorized
operating/service personnel who are expected to possess the
required training to enable them to perform their tasks properly
and safely. This individual must have read and understood this
document and any referenced materials prior to performing any
task on this equipment. Also, it is essential that this individual
be familiar with and comply with all applicable governmental
standards and regulations pertaining to the task in question.
This individual must also verify that installation and connections
comply with local building codes. It is the obligation and
responsibility of the operating/service personnel to identify and
recognize these inherent hazards, protect themselves, and
proceed safely in completing their tasks. Failure to comply
with any of these requirements could result in severe personal
injury or death to themselves and people at the site, as well as
serious damage to the equipment and the property in which it
is situated.
The equipment discussed in this manual is relatively
complicated apparatus and must be handled with the
necessary precautions. Individuals may be exposed to certain
components or conditions such as refrigerants, oils, materials
under pressure, rotating components, and both high and low
voltage during installation, operation, maintenance or service
of this equipment. If misused or mishandled, each item has the
potential to cause bodily injury or death.
Safety Precautions
When using electrical appliances, basic safety precautions
should always be followed including the following:
1. Read all instructions.
2. Do not touch hot surfaces.
3. To protect against electrical shock do not immerse cord,
plugs, or Control Box in water or other liquids.
4. Unplug the unit when not in use and before cleaning.
5. Do not operate any appliance with a damaged cord or
plug or after the appliance malfunctions or has been
damaged in any manner. Return appliance to the nearest
authorized service facility for examination, repair or
adjustment.
6. The use of accessory attachments not recommended by
the appliance manufacturer may cause injuries.
7. Do not use outdoors.
8. Do not let cord hang over edge of a table or counter, or
touch hot surfaces.
9. Do not place on or near a hot gas or electric burner, or in a
heated oven.
10. Always attach plug to appliance first, then plug into the
power source. To disconnect, turn any control to “off”,
then remove plug from power source.
11. Do not use appliance for other than intended use.
12. Save these instructions.
Safety Symbols
The following symbols are used in this document to alert the
reader to areas of potential hazard:
CAUTION
Failure to observe may result in equipment damage.
WARNING
Failure to observe may result in personal injury, death or
equipment damage.
NOTE: Used to highlight additional information helpful to the reader.
Product Overview
Introduction................................................................... 1
General Safety Guidelines..............................................1
Safety Precautions ....................................................... 1
Safety Symbols ............................................................. 1
Underfloor Systems Control Zones................................ 2
General Description....................................................... 3
Features of the PCM ..................................................... 4
Operation ...................................................................... 4
Installation & Mounting Instructions
Installation ..................................................................... 5
Price Flow Response Chart ........................................... 5
Input/Output Description ............................................... 6
Wiring ........................................................................... 7
Thermostat Installation .................................................. 8
How to use Thermostats ............................................... 9
Display Navigation
Initial Startup ............................................................... 10
Service Menu .............................................................. 11
Balancing Menu .......................................................... 12
VVT Menu ................................................................... 13
Setpoint Menu............................................................. 14
Input Menu.................................................................. 15
Output Menu - Aux Binary........................................... 16
Output Menu - Analog Outputs ................................... 17
Stat Setup Menu ......................................................... 18
Info Menu.................................................................... 19
Address Menu............................................................. 20
Networking & Setup
BACnet Networking and Setup ................................... 21
Setting the Device Instance ......................................... 26
LINKER - USB Service Tool ......................................... 27
Maintenance
Troubleshooting........................................................... 28
Hardware Specifications.............................................. 29

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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATINGPCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
PRODUCT OVERVIEWProduct overview
Underfloor Systems Control Zones
INTERIOR ZONES
Constant Air Volume - Cooling Only
Typically, interior zones have relatively stable loads hence
constant volume supply is often employed. A typical interior
zone consists of contant volume or constant pressure turbulent
floor twist outlets installed in a large, common plenum space.
In this method the entire plenum space is treated as one zone
and, under fluctuating loads, the amount of air delivered to
the space is regulated by the relative pressure in this plenum,
modulated by a single point of control. Manual face-adjustable
diffusers (MFD) provide occupant control of airflow volume.
Variable Air Volume - Cooling Only
In the case an open plenum is desired to be divided into
several zones, variable air volume control is possible with the
use of devices installed under the diffuser or with the use of a
variable volume basket. The variable volume diffusers would
be controlled by the PCM. The PCM would open and close
the diffusers releasing air from the pressurized plenum. The
variable volume (VAV) diffusers require a 24 VAC signal which
is provided by the PCM to modulate the actuators. Meanwhile,
the PCM accepts a 0 to 10 VDC cooling signal either from
a manual control signal or from a thermostat. The PCM
modulates the airflow from 0% to 100%.
PERIMETER ZONE
Trough Heating and Cooling
Use of linear floor grilles with integrated heating elements offer
a system with heightened flexibility and efficiency as it omits
the use of fan terminal units and ducting. In cooling mode,
dampers on the LFGH modulate open to the plenum allowing
more airflow into the space to satisfy the cooling demand.
When a call for heat arises, the hot water or electric coil
energizes and the diffusers either open to the plenum or to a
perimeter cavity to allow air to pass over the heating element.
LFGHs are controlled by the PCM where up to 12 LFGHs can
be daisy chained.
TROUGH HEATING AND COOLING
General Description
The Power and Control Module (PCM) for interior and perimeter cooling and heating control is a direct digital controller for
pressurized underfloor plenum cooling zones. It can control up to 30 daisy chained underfloor damper/diffusers – 12 of which
can be perimeter units with integrated heat connected using plug-and-play CFLEX cables. Auxiliary inputs and outputs add to the
PCM’s flexibility.
The PCM offers cutting edge zone control by combining the accuracy of direct digital control with the flexibility of an individual zone
control system; providing maximum control and efficiency. An advanced and configurable proportional integral controller allows for
exceptional user comfort and energy efficiency. Installation of the controller and thermostat is simple and error proof with RJ-45
(network type) connections to the thermostat and BACnet network.
PCM comes as a rugged galvanized enclosure complete with a 100VA transformer and disconnect switch.
CONSTANT AIR VOLUME - COOLING ONLY
VARIABLE AIR VOLUME - COOLING ONLY
METAL SAFETY GUARD
SEPARATING HIGH AND
LOW VOLTAGE AREAS
100VA MULTI-TAP
TRANSFORMER WITH
CIRCUIT BREAKER
DISCONNECT SWITCH
4 GROMMETED
OPENINGS FOR MODULAR
CABLE CONNECTIONS
THERMISTOR INPUT
(MONITORING ONLY) VOLTAGE TEST POINTS
RJ-45 T-STAT PORT FOR
THERMOSTAT CONNECTION
PLUGGABLE 24VAC
POWER TERMINAL
BACNET MS/TP CONNECTIONS
COMMON BINARY OUTPUTS
AUX
DAMPER CLOSED
DAMPER OPEN
BACNET MAC ADDRESS
LED INDICATORS FOR
TROUBLESHOOTING
ANALOG INPUTS
PIN 1 – COOLING
PIN 2 – HEATING
ANALOG OUTPUTS
HEAT
AUX
COM
LFGH OUTPUTS
CONNECT UP TO 6 LFGH UNITS
PER JACK FOR A TOTAL OF 12
LFGH UNITS
MODULAR DAMPER OUTPUTS
CONNECT UP TO 6 UNDERFLOOR
DAMPERS/DIFFUSERS PER JACK
FOR A TOTAL OF 30 DAMPERS/
DIFFUSERS (INCLUDING LFGH)

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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
INSTALLATION & MOUNTING INSTRUCTIONS
4PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING - Manual |priceindustries.com
PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
Product overview
Features of the PCM
• Control up to 30 underfloor dampers.
• Modular connections to dampers – Use RJ-12 cables
included with dampers to connect underfloor dampers to
PCM. LFGH dampers use RJ-45 connections.
• Outputs protected by self-resetting thermal fuses – Prevents
damage to circuit board in the event of a damaged cable.
Fault LED lights when dampers are trying to drive on an
output with damaged cable.
• Auxiliary 24VAC Binary Output – Use for reheat, room lights,
signal to other equipment, etc. Rated for a maximum output
of 0.5A (12VA).
• Auxilary Analog Outputs (2) – Use to connect to other
equipment, BAS, etc. Output range fully configurable (2-
10VDC, 0-10VDC, 10-2VDC, etc.). Rated at a maximum
output of 10mA each.
• Analog Inputs (2) – Configurable to allow control of the
PCM from a source other than a Price Thermostat (BAS,
third party thermostat, etc.). Accepts the standard dual
0-10VDC signal for cooling/heating. (if not using LFGH
or other heaters connected to PCM, only the 0-10V cooling
signal is needed).
• Input (1) 10K type J thermistor – Can be used to monitor a
temperature over the network. Can also be used for heat/
cool changeover.
• Thermostat port - For RJ-45 connection to thermostat from
the PCM controller.
• Native BACnet MS/TP communication – Connect using RJ-
45 cable, or use discrete twisted-pair wire to terminal block.
Available speeds: 9600, 19200, 38400, 76800 (default).
• LED Indication – For ease of troubleshooting – displays
status, damper directions, BACnet status, and output fault.
• Pluggable terminal blocks – For easy installation.
• High-Voltage disconnect switch.
• Max 100VA multi-tap transformer with circuit breaker.
• Metal safety guard separating high and low voltage areas.
• 4 grommeted openings for modular cable connections.
• Temperature sensor input (for monitoring).
• Disconnect switch.
• Pluggable 24VAC power terminal.
Operation
The PCM controller is an advanced and fully configurable
underfloor ModuFlex cooling controller. It is typically interfaced
with one of four Price Thermostats to determine room load and
allow for setup functions. With a variety of output configurations,
the PCM can control up to 30 underfloor dampers, as well as
auxiliary equipment using its auxiliary 24VAC binary outputs, and
analog 0-10V outputs.
Upon an increase in space temperature the controller regulates the
dampers open to increase the flow of cool air. On an increase
of space temperature greater than the proportional band,
the dampers’ positions are maintained at their pre-selected
maximum setting.
On a decrease in space temperature the controller regulates the
dampers closed to decrease the flow of cool air. If connected to
LFGH floor grills with integrated damper and reheat, the PCM
will energize or modulate the heat proportionally to the room
demand. If the space temperature decreases to less than the
proportional band, the dampers’ positions are maintained at
their pre-selected minimum setting.
The PCM can also be configured to accept 0-10V input signals
from a BAS system or third party thermostat for room load
calculations, instead of data from the thermostat.
The PCM can be used as a stand alone unit, or can be
interfaced into a BAS with the MS/TP BACnet network.
The PCM offers five thermostat options that provide a range of
control from room temperature sensing, all the way to motion
sensing. With the use of the LCD Thermostat, balancing and
system setup can be achieved. Further, with the use of the LCD
Thermostat with Motion, the PCM can be used as a motion-
occupied zone and lighting controller. The LCD Thermostat with
Motion offers different levels of sensitivity and still performs all
the functions of the regular LCD Thermostat.
Installation
1. Before installation, make sure that Building installation
should have maximum of 20 A Circuit Breaker.
NOTE: PCM doesn’t contain any primary Protection and
entirely relies on protection from Building Installation.
2. Place the PCM in the underfloor plenum in the center of
the controlled zone.
3. Supply power and ground to terminal per wiring diagram.
NOTE: This task must be completed by a certified and
licensed electrician.
4. Connect underfloor dampers using CFLEX cables supplied
with dampers. Follow these general rules:
A. Connect no more than 30 dampers total
B. Daisy chain up to 6 dampers per output – no more
C. Do not connect standard dampers (with RJ-12 plug) to
LFGH outputs (which use RJ-45 plug)
D. LFGH dampers (up to 12) count towards the maximum
of 30 dampers per controller
5. Run CFLEX thermostat cable to thermostat, and plug into
“T-Stat” port on the PCM. (For thermostat installation
reference the Installation & Mounting Instructions
Thermostat Installation section.)
6. Connect BACnet network (if used). For more detailed
information on networking with PCM reference the Display
Navigation Address Menu section.
7. Flip the PCM’s power switch to the ON position.
Price Flow Response Chart
HCCO Response Cooling
Min
Cooling
Flows
Heating
Min
Heating
Flows
Neutral Supply
Air Flow
PI = Cooling Supply air = Cold D L
PI = Heating Supply air = Cold D L
PI = Neutral Supply air = Cold D L
PI = Cooling Supply air = Hot D L
PI = Heating Supply air = Hot D L
PI = Neutral Supply air = Hot D L
PI = Cooling Supply air = Neutral D L
PI = Heating Supply air = Neutral D L
PI = Neutral Supply air = Neutral D L
“D” indicates the target of the regular dampers and “L” represents the target of the LFGH dampers (with integrated reheat)
NOTE 1: By default the PCM is shipped configured for cold supply air only. This can be changed to enable HCCO with thermistor
probe (however this will almost never be the case).
NOTE 2 : PI = Proportional Integral = room load (either cooling/neutral/heating)
Above is a flow response chart for the PCM, showing the demand, duct air condition, and the controller’s output.
E.g.: PI = Cooling, Supply Air = Cold, Output = Cooling Flows. This indicates that the room demand is in cooling, the supply air is cold,
and the controller would modulate both the regular dampers and the LFGH dampers between the Cool Min and Cool Max values.
Use the above table to determine what airflows are being chased in certain modes. Example: If PCM is trying to heat the room (PI = Heating)
and cool air is being supplied (Duct Air = Cold) it will chase its heating min flow.
TECH TIP

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INSTALLATION & MOUNTING INSTRUCTIONSINSTALLATION & MOUNTING INSTRUCTIONS
Wiring
Below is an example of a typical PCM layout.
100VA
Input/Output Description
24VAC Binary Outputs Description
BO – DPR OPN Plenum damper open. Used for floating point actuators.
BO – DPR CLO Plenum damper closed. Used for floating point actuators.
BO – AUX Aux binary output available.
Analog Outputs
AO – Heat Signal sent to LFGH diffusers (0-10VDC)
AO – Aux Aux analog output available (0-10VDC)
Analog 0-10VDC Inputs
AI4 – Cooling
Can be configured (along with AI5) to control the PCM from a third party
thermostat. In this configuration, AI4 is the 0-10VDC cooling load input.
Can also be used for simple voltage monitoring when analog
inputs are not configured as control source.
AI5 – Heating
Can be configured (along with AI4) to control the PCM from a third party
thermostat. In this configuration, AI5 is the 0-10VDC cooling load input.
Can also be used for simple voltage monitoring when analog
inputs are not configured as control source.
Additional Inputs
AI1 – 5VDC Sensor Typically used for voltage monitoring over BACnet network.
THERM
Analog Input for temperature probe hookup with 10k Type J Thermistor.
Typically used for temperature monitoring over BACnet network.
Can also be configured for heat/cool changeover if required.

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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATINGPCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
INSTALLATION & MOUNTING INSTRUCTIONSINSTALLATION & MOUNTING INSTRUCTIONS
Thermostat Installation
General Description
The PCM Thermostats are all physically the same size and
mounting instructions will be typical.
Location
1. The Third-Generation Underfloor ModuFlex Controller
(PCM) Thermostats must be mounted to a wall and wired
to the controller via the supplied plenum rated via the
supplied plenum rated CFLEX cable. This cable plugs into
the thermostat and the PCM controller with the ease of
RJ-45 connections.
NOTE: The cable run can be extended to 70 ft. using a
Price cable coupler and additional 35 ft. cable.
2. Mount the required thermostat in a place that is
convenient for the end user, but the following should be
taken into consideration:
• Do not mount a thermostat in direct sunlight i.e. across
from a window where heat can alter the temperature
reading.
• Should not be installed on an outside wall.
• Keep away from hot equipment like computers,
monitors and heaters etc.
• Ensure nothing will restrict vertical air circulation to the
thermostat. (Do Not Cover)
• Ensure wall is NOT pressurized! Hot/Cold air from a
pressurized wall will blow directly onto the thermostat’s
temperature sensor causing inaccurate readings.
Installation
1. The back plate on each thermostat is removable and can
be mounted to a standard electrical box or directly to
drywall using anchors supplied by others.
2. Run the CAT-5 cable through the center hole in the plate
and connect the cable to the thermostat. Then, secure the
thermostat onto the wall plate by inserting the top portion
of the thermostat first, then snapping the bottom half in.
3. All thermostats will come equipped with a 0.050 in. Allen
Key for the set screw at the bottom.
Careful thermostat installation will reduce field issues! Do
not twist or kink the blue CAT-5 thermostat cable. Damaged
cables are difficult to troubleshoot!
Thermostat cable product code: C25 Cable
TECH TIP
www.priceelectronics.ca
Page 6 of 24
Thermostat Installation
Location
1. The Price Analog Controller (PAC) Thermostats mu st be mounted to a wall and wired to the PAC
controller. The connecting cable screws into the thermostat and the PAC controller with the
supplied terminal blocks. Note: the cable run can beup to 70 ft.
2. Mount the required thermostat in a place that is convenient for the end user, but the following
should be taken into consideration:
•Do not mount a thermostat in direct sunlight i.e. across from a window where heat can
alter the temperature reading.
•Should not be installed on an outside wall .
•Keep away from hot equipment like computers, monitors and heaters etc.
•Ensure nothing will restrict vertical air circulationto the thermostat. (Do Not Cover)
•***Ensure wall is NOT pressurized! Hot/cold air fr om a pressurized wall will direct
blow onto the thermostat’s temperature sensor causi ng ‘bad’ readings. ***
Installation
1. The back plate on each thermostat is removable and can be mounted to a standard electrical box
or directly to drywall using anchors supplied by ot hers.
2. Run the cable through the center hole in the plate. Connect the cable to the thermostat, and then
secure the thermostat onto the wall plate inserting the top portion of the thermostat first, and then
snapping the bottom half in.
3. The thermostat will come equipped with a 0.050” Allen key for the set screw at the bottom.
How to use the Dial Thermostat
•The Dial Thermostat is powered from the PACcontroller.
•Measures room temperature and features a dial adju stment and an occupancy
button.
•Temperature Setpoint limits can be adjusted throug h free setup software using
the Price LINKER, or through an LCD Setup Stat.
•Simply use the adjustable dial for temperature adj ustment.
•Occupancy button can be used to override the systemduring unoccupied
times. Default setting is 4hrs.
T
ECH TIP: Careful thermostat installation will reduce field
issues! Do not twist or kink the thermostat cable.
Damaged cables are difficult to troubleshoot!
1.25" (32MM)
WALL FASTENERS
BY OTHERS
PLENUM RATED CFLEX CABLE INCLUDED
SURFACE MOUNT DETAIL
How to use Thermostats
Room Sensor Thermostat
• Measures room temperature.
• Setpoint can be adjusted from a hidden dial on the back of the thermostat using a
small flat-head screw driver.
• Setpoint limits can be adjusted through free setup software using the Price
LINKER, or through a BACnet system.
• Eliminated problem of unauthorized tampering with the thermostat.
• Occupancy button can be used to override the system during unoccupied times.
Default setting is 4 hours.
Dial & Wireless Thermostat
Dial Thermostat
• Measures room temperature and features a dial adjustment and an occupancy button.
• Temperature Setpoint limits can be adjusted through free setup software using the
Price LINKER, or through a BACnet system.
• Simply use the adjustable dial for temperature adjustment.
• Occupancy button can be used to override the system during unoccupied times.
Default setting is 4 hours.
• LED light indicates what mode the thermostat is in. One blink is cooling mode,
two blinks is heating mode, three blinks is neutral.
Wireless Thermostat
• Functionally identical to the Dial Thermostat.
• Requires wireless receiver, see Wireless Thermostat manual for details on
installation.
LCD Thermostat
• Measures room temperature and features an LCD screen with push button day
Setpoint adjustment.
• Temperature Setpoint limits are set through the thermostat setup menus, free
setup software using the Price LINKER, or through a BACnet system.
• Balancing and additional setup functions also available through the menus.
• [Optional]: Add CO2 and humidity measurement with PIC-TS-CO2H
LCD Thermostat with Motion Sensor
• This model measures room temperature, features an LCD screen with day
Setpoint adjustment, and motion sensor with lighting control.
• Temperature Setpoint limits are set through the thermostat setup menus, free
setup software using the Price LINKER, or through a BACnet system.
• Balancing and additional setup functions are also available through the menus.
• This model is equipped with a motion sensor to determine occupancy of the
space. This sensor can also be used to control lighting.
NOTE: All Price Thermostats are powered via the RJ-45 connection to the controller
ROOM SENSOR THERMOSTAT
DIAL & WIRELESS THERMOSTAT
LCD THERMOSTAT
LCD THERMOSTAT W/ SENSOR

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DISPLAY NAVIGATIONDISPLAY NAVIGATION
Initial Startup
(LCD & Motion Thermostat only)
When the LCD thermostat is powered from the PCM, it will display the following information:
Changing the Setpoint – LCD & Motion Thermostat only
Day Setpoint Adjustment. Increase and decrease push buttons for Day Setpoint adjustment
PRICE ELECTRONICS Start-up screen
LCD THERMOSTAT
STANDARD MODEL Standard/Motion Model
LCD THERMOSTAT
VERSION X.XX Displays firmware version of thermostat
LOADING:
INITIALIZING Loading parameters
PCM
VERSION X.XX Controller type and controller firmware version
SEQUENCE
XXXX
Displays sequence programmed into stat
NOTE: a sequence number of 0 means the stat has NOT been calibrated
MAC ADDRESS
XXX Displays current MAC Address
DEVICE INST.
XXXXXXX Displays current Device Instance
ROOM TEMP.
75.0°F (For example)
DAY SETPOINT
75.0°F
DAY SETPOINT
SAVING...
Service Menu
(LCD & Motion Thermostat only)
The Service menu allows the balancer/installer to access to the controller setup to change settings.
For example setting flows, heating outputs, etc.
Hold ‘Enter Menu’ button for 5 seconds. Display will show ‘Passcode:’
Use ‘Up’ and ‘Down’ buttons to enter this passcode: Down - Up - Up - Down.
BALANCING • Allows you to force damper open/close/min/max
VVT • Allows you to set limits (%) in VVT mode
SETPOINT • Setup of Setpoint limits (day minimum/maximum)
• °F / °C selection
INPUT • Shows thermistor reading
• Allows setting of HCCO if desired
OUTPUT • Allows setup of auxiliary binary and analog outputs
• Allows setup of room light output (motion stat only)
ADDRESS • Allows setup of BACnet addresses
• MAC address, Device Instance Baud Rate
STAT SETUP • Allows setup of LCD back lighting, sounds, motion sensor
• Adjustment of HVAC and room lighting timeouts
PRESS MENU
TO EXIT
• This will exit the Service Menu if you press the Enter/Menu button
• NOTE: Service menu will automatically time out after 20 seconds

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DISPLAY NAVIGATIONDISPLAY NAVIGATION
Balancing Menu
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter/Menu’ button to apply your changes. ‘...Saving...’ will display as
your changes are applied.
BALANCING
PRESS MENU
TO EXIT
DPR. OVERRIDE
DISABLED DPR. OVERIDE
GOTO COOL MIN Cool Min
Regular and LFGH dampers go to their Cool Minimum positions
DPR. OVERIDE
GOTO COOL MAX
Cool Max
Regular and LFGH dampers go to their Cool Maximum positions
DPR. OVERIDE
GOTO HEAT MIN
Heat Min
Regular and LFGH dampers go to their Heat Minimum positions
DPR. OVERIDE
GOTO HEAT MAX
Heat Max
Regular and LFGH dampers go to their Heat Maximum positions
DPR. OVERIDE
GOTO NEUTRAL
Neutral Flow
Regular and LFGH dampers go to their Neutral Supply Air positions
DPR. OVERIDE
GOTO FULL OPN
Full Open
Force all dampers and LFGH full open
DPR. OVERIDE
GOTO FULL CLO
Full Close
Force all dampers and LFGH closed
POSITION
TARGET
• Display shows current target and position
• Controller will remain in this mode until user exits the
menu
VVT Menu
(Pressure Dependent Damper Ranges)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter/Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.
VVT
PRESS MENU
TO EXIT
DPR. RUNTIME
90 SEC.
Damper Runtime
• Damper runtime (time to drive through entire damper range)
• Range: 0-600 seconds Default: 90 seconds
LFGH COOL MIN
0%
LFGH Cool Min Position
• LFGH Cool Minimum Position in %
• Range: 0-100% Default: 0%
LFGH COOL MAX
100%
LFGH Cool Max Position
• LFGH Cool Maximum Position in %
• Range: 0-100% Default: 100%
LFGH HEAT MIN
0%
LFGH Heat Min Position
• LFGH Heat Minimum Position in %
• Range: 0-100% Default: Depends on sequence
LFGH HEAT MAX
100%
LFGH Heat Max Position
• LFGH Heat Maximum Position in %
• Range: 0-100% Default: Depends on sequence
LFGH NEUTRAL
0%
LFGH Neutral Supply Air position (not normally used)
• LFGH position (in %) when Neutral supply air is present
• Range: 0-100% Default: 50%
LFGH RUNTIME
90 SEC
LFGH Neutral Supply Air position (not normally used)
• LFGH Damper runtime (time to drive through entire damper range)
• Range: 0-600 seconds Default: 90 seconds
DPR. COOL MIN
0%
Damper Cool Min Position
• Cool Minimum position in %
• Range: 0-100% Default: 0%
DPR. COOL MAX
100%
Damper Cool Max Position
• Cool Maximum position in %
• Range: 0-100% Default: 100%
DPR. HEAT MIN
0%
Damper Heat Min Position
• Heat minimum position in %
• Range 0-100% Default: 0%
DPR. HEAT MAX
100%
Damper Heat Max Position
• Heat Maximum Position in %
• Range 0-100% Default: 100%
DPR. NEUTRAL
0%
Damper Neutral Supply Air position (not normally used)
• Damper position (in %) when Neutral Supply Air is present
• Range 0-100% Default: 0%
UNOCC DPR POS
33%
Unoccupied Damper Position
• Unoccupied (Night Setback) Damper position in %
• Range: 0-100% Default: 33%

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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATINGPCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
DISPLAY NAVIGATIONDISPLAY NAVIGATION
SET LO LIMIT
65.0°F
Day Setpoint Low Limit
• This is the lowest Setpoint allowed
• Range: 10.0°F – 100.0°F Default: 65.0°F
SET HI LIMIT
80.0°F
Day Setpoint High Limit
• This is the lowest Setpoint allowed
• Range: 10.0°F – 100.0°F Default: 80.0°F
TEMP. UNITS
FEHRENHEIT
Termperature Units
• Fahrenheit or Celsius
• Default: °F
NIGHT HEAT SET
62.0°F
Night Heat Setpoint
• PCM will maintain this heating Setpoint when unoccupied
• Range: 10.0°F – 100.0°F Default: 62.0°F
NIGHT COOL SET
83.0°F
Night Cool Setpoint
• PCM will maintain this cooling Setpoint when unoccupied
• Range: 10.0°F – 100.0°F Default: 83.0°F
PRO. BAND
2.0°F
Proportional Band
• The Proportional Band is the temperature range through which the controller calculates a
0-100% load
• Range: 0.5°F – 25.0°F Default: 2°F
DAY DIFF.
1.0°F
Day Differential
• This is the maximum allowed “error” on either side of the room Setpoint before the controller
will enter its heating or cooling proportional bands
• Range: 0.5°F – 25.0°F Default: 1.0°F
CONTROL FROM
THERMOSTAT
Control Source
• Thermostat: Controller uses thermostat temperature and Setpoint to determine room load and
control
• Analog Input: Controller uses 0-10VDC inputs to determine room load and control. Use this
control source type for a 0-10VDC signal by others.
PRESS MENU
TO EXIT
SETPOINT
Setpoint Menu
(Setpoint Limits and Temperature Units)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter/Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.
SUPPLY AIR TEMP
50.0°F
Supply Air Temperature (S.A.T.) readout
• Shows current thermistor probe reading
• Range: -59.0°F – 300.0°F
• “No Probe” means no sensor is connected
NEUTRAL MODE
FORCE COOL
Neutral Mode
Controls Supply Air calculations by the PCM
NOTE: Default mode is “Force Cool”. This will be used 99.9% of the time.
• Neutral Mode: Dynamic
- When Supply Air Temperature (as measured on thermistor input) is below room temp, it is
considered cold
- When Supply Air Temperature (SAT) is above room temp, it is considered hot
- NOTE: There is a 2 degree differential on either side of the current room temperature
which would equate to Neutral Supply Air if the SAT fell within this range.
• Neutral Mode: Conventional
- Uses hot/cold switch points which are hard set below
- Not recommended
• Neutral Mode: Force Cool
- PCM Default
- Controller assumes cold supply air at all times (despite any reading of T1 Thermistor input)
- This is useful by allowing the T1 thermistor input to be used for monitoring only
• Neutral Mode: Force Heat
- Control assumes hot supply air at all times
- Not recommended
HOT SWITCH
0.0°F
Hot Switch - Only active/visible when Neutral mode = Conventional
• Only active/visible when Neutral mode = Conventional
• PCM will consider the supply air warm if at the hot switch temp or above
• Default: 0.0°F – PCM defaults to Cool supply air at all times
COLD SWITCH
0.0°F
Cold Switch - Only active/visible when Neutral mode = enabled
• Only active/visible when Neutral mode = Enabled
• PCM will consider the supply air cold if at the cold switch temp or below
• Default: 0.0°F – PCM defaults to Cool supply air at all times
RM. TMP. OFFSET
0.0°F
SAT OFFSET
0.0°F
PRESS MENU
TO EXIT
INPUT
Input Menu
(Supply Air Temp and Neutral Mode)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.

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DISPLAY NAVIGATIONDISPLAY NAVIGATION
OUTPUT
OUTPUT
ANALOGS
OUTPUT
AUX BINARY
PRESS MENU
TO EXIT
Output Menu - Aux Binary
(Setup of Auxiliary Binary Output)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.
USED AS
HEAT OUTPUT
(Default) Output energized when the room demand is heating and the heat load is at or above
trip point (below)
USED AS
COOL OUTPUT Output energized when the room demand is cooling and the cool load is at or above trip point
USED AS
HEAT AND COOL Output energized when the room demand is heating or cooling and load is above trip point
USED AS
DEADBAND OUTPUT Output energized with room is satisfied
USED AS
ROOM LIGHTS When using Motion Thermostat, output controls room lights
USED AS
FORCE OFF Output de-energized at all times
USED AS
FORCE ON Output energized at all times
TRIP POINT
5%
• Room load at which output is energized. (Heat, Cool, and Heat&Cool modes)
• Range: 1-100%
• Default: 5%
PRESS MENU
TO EXIT
ANA. HEAT MIN
0.0 VDC
Analog Heat Min Voltage
• Outputs this voltage on Analog Heat pin (and LFGH outputs) when there is a minimum call for heating
• Default: 0.0VDC
ANA. HEAT MAX
10.0 VDC
Analog Heat Max Voltage
• Outputs this voltage on Analog Heat pin (and LFGH outputs) when there is a maximum call for heating
• Default: 10.0VDC
ANA. HEAT IDLE
0.0 VDC
Analog Heat Idle Voltage
• Outputs this voltage on Analog Heat pin (and LFGH outputs) when there is no call for heating
• Default: 0.0VDC
AUX COOL MIN
0.0 VDC
Auxillary Cool Min Voltage
• Outputs this voltage on Auxiliary Analog pin when there is a minimum call for cooling
• Default: 0.0VDC
AUX COOL MAX
10.0 VDC
Auxillary Cool Max Voltage
• Outputs this voltage on Auxiliary Analog pin when there is a maximum call for cooling
• Default: 10.0VDC
AUX HEAT MIN
0.0 VDC
Auxillary Heat Min Voltage
• Outputs this voltage on Auxiliary Analog pin when there is a minimum call for heating
• Default: 0.0VDC
AUX HEAT MAX
0.0 VDC
Auxillary Heat Max Voltage
• Outputs this voltage on Heat Analog pin when there is a maximum call for heating
• Default: 0.0VDC
AUX DEADBAND
0.0 VDC
Auxillary Deadband Voltage
• Outputs this voltage on Auxiliary Analog pin when there is no call for heating or cooling (deadband)
• Default: 0.0VDC
PRESS MENU
TO EXIT
OUTPUT
OUTPUT
ANALOGS
PRESS MENU
TO EXIT
OUTPUT
AUX BINARY
Output Menu - Analog Outputs
(Setup of Analog Outputs)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.

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DISPLAY NAVIGATIONDISPLAY NAVIGATION
Stat Setup Menu
(Stat Options)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter/Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.
OCCUPANCY
ON - AIRFLOW
Occupancy
• Show current occupancy source
• ON from VVT (always on), ON from Airflow, ON from Contact, ON from Motion Sensor
MOTION ENABLE
OFF
Motion Enable (Motion sensor STAT only)
• Off – motion sensor disabled – Default for regular LCD Thermostat
• On – motion sensor enabled (only enabled if you have a motion stat)
• Only visible with motion stat
MOTION SENSITIVITY
Motion Sensitivity (Motion sensor STAT only)
• Sets the sensitivity of the motion sensor
• 1 – least sensitive
• 9 – most sensitive
• 5 – DEFAULT
• Only visible when motion is enabled
MOTION TEST
OFF
Motion Test (Motion sensor STAT only)
• Motion Thermostat will beep each time motion is sensed
• This is useful for adjusting the sensitivity value & testing
HVAC TIMEOUT
240 MIN.
HVAC Timeout
• PCM will go into unoccupied after no motion is detected and this timer expires
• Default: 240 minutes
LIGHTS TIMEOUT
60 MIN.
Lights Timeout (Use room light output to select lighting signal)
• PCM will turn off lighting output after no motion is detected and this timer expires
• Default: 60 minutes
LCD BACKLIGHT
ALWAYS ON
LCD Backlight
• Always on (Default)
• Always off
• Button push – lights up on button press
SOUND OPTIONS
LIMITS ONLY
Sound Options
• User Sounds – stat will beep when user tries to exceed a limit – Default
• All off – beeper disabled
• All on – stat will beep when user tries to exceed a limit or stat loses communication with the
controller (for testing use only) – not recommended
PRESS MENU
TO EXIT
STAT SETUP
Info Menu
(LCD & Motion Thermostat only)
The Info menu shows information about the controller status regarding room load, damper position and BACnet Address info.
No values can be changed from this menu and it is not locked or protected in any way.
Press ‘Enter/Menu’ button to enter the User Menu, scroll through using the ‘Up’ and ‘Down’ buttons.
OCCUPANCY
ON - AIRFLOW
Occupancy
The Occupancy can be determined by airflow, contact closure, motion or by a user pressing a button
COOLING MODE
LOAD
Room Load
• Cooling Mode is shown as a load from -1 to -100%. (-100% = max)
• Heating Mode is shown as a load from 0 to 100%. (+100% = max)
• Dead band Mode will be shown as 0%, where the room is satisfied
THERM READING
62.0˚F
Thermistor #1 Input Reading
• If no probe is present, LCD will display No Probe
• If probe present, LCD will display temperature
DAMPER POS.
50%
Damper Position
• This indicates the current position of the damper in percent (%)
• Range is 0-100% (100% = full open or maximum air)
DAMPER TARGET
50%
Damper Target
• This indicates the current target of the damper in percent (%)
• This target is where the damper is currently driving towards
LFGH DPR POS
50%
LFGH Damper Position
• This indicates the current position of the LFGH damper in percent (%)
• Range is 0-100% (100% = full open or maximum air)
LFGH TARGET
50%
LFGH Damper Target
• This indicates the current target of the LFGH damper in percent (%)
• This target is where the LFGH damper is currently driving towards
MAC ADDRESS
10
MAC Address (MAC address must be unique on the network segment)
• MAC address must be unique on the network segment
• Shows the BACnet MAC address. Range 1-99
• MAC Address can be set via DIP switch
DEVICE INST.
210
Device Instance (Instance must be ‘globally’m unique on your site)
• Displays controller’s BACnet Device Instance (if BACnet is attached)
• Device Instance can range from 0 – 4,194,303
PRESS MENU
TO EXIT
This will exit the Info menu if you press the Menu button
NOTE: Info menu will automatically time out after 60 seconds

BACNET WIRING
ELECTRICAL NOISE EXAMPLE
BACnet Wiring
Price controllers, when selected with the optional BACnet
interface, have the option of using supplied 35’ CAT 5 cables
to run BACnet MS/TP, or field supplied cable hardwired into
a pluggable terminal block (see next page if using hardwired
BACnet connections). The RJ-45 jacks for use with the
supplied BACnet cables are directly tied to the pluggable
terminal block, and so any combination of supplied cables
and hardwired connections can be used on a single network
segment.
BACnet networks must be run in a daisy chain configuration,
meaning there is only one main cable and each network device
is connected directly along its path, with no more than 30
devices per segment, and MS/TP segment lengths must not
exceed 1050 feet.
Termination
BACnet MS/TP networks must be terminated to ensure proper
operation. A network should be terminated twice, once at
the beginning and once at the end. Termination helps reduce
reflections and noise. The terminating can be done with a 100
ohm resistor across the + and - lines. Most Price controllers
have the option for enabling termination via a DIP switch #8
or by a software menu selection. Turning on termination via
software will enable the resistor across the lines and also turn
on a green LED labeled “TRM”.
Tech Tip: The Price BACnet MS/TP to IP Router has built
in termination and it is enabled by default (since the router is
typically the beginning of the entire MS/TP network). Now you
only have to go and find/terminate that last device.
Electrical Noise
FROM
PREVIOUS DEVICE
TO NEXT
DEVICE
HIGH VOLTAGE/
CURRENT LINE
BACNET NETWORK
Electrical noise can affect both analog signal and digital communications such as BACnet. Therefore do not route high voltage
lines next to the BACnet network! Avoid noisy electrical sources such as:
• Variable Frequency Drives
• High current power lines
(main panel feeds)
• Fluorescent light fixtures
If you must pass near noisy electrical lines cross at right angles. This will help reduce the amount of noise coupled to the network
wires.
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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
NETWORKING & SETUP
20 PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING - Manual |priceindustries.com
PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
DISPLAY NAVIGATION
MAC SET IN:
HARDWARE
MAC Address
• Hardware – uses DIP switch on BACnet module for MAC Address – Default - recommended
• Software – uses STAT to set MAC Address – this OVERRIDES the hardware switches and
could be confusing if you’re not careful
NOTE: the MAC Address (range 1-99) is added to the Device Instance.
• Example: MAC Address = 1, Device Instance = 100 – total Address for this PCM would be
101
MAC ADDRESS
HARDWARE : 1
MAC Address
• Display current MAC Address
NOTE: DIP switches and software MAC Address are only read on startup!
See Device Instance below.
DEVICE INST.
101
Device Instance
• This is the ‘software’ BACnet Address & MUST be unique on your building site
• Range: 1 – 4,194,303
NOTE: After changing Device Instance the thermostat will send a RESET command to the PCM
to apply the ADDRESS changes. Addresses are only READ on startup, so after any changes you
must reset the controller either via the thermostat (which is automatic) or cycle 24VAC power.
NOTE: Addresses are only read on startup to prevent a controller with faulty damaged/
improperly set DIP switches from popping up all over a network, which would be extremely
difficult to troubleshoot.
BAUD RATE
76800
Baud Rate
• This sets the BACnet MS/TP baud rate
• 9600 baud (all BACnet devices must at least support at least this speed) – slowest
• 19200 baud
• 38400 baud
• 76800 baud (Default baud rate for Price products) – fastest
PRESS MENU
TO EXIT
ADDRESS
Address Menu
(BACnet Addressing Setup)
Scroll through with the ‘Up’ and ‘Down’ buttons. Press ‘Enter/Menu’ button to apply your changes. ‘Saving...’ will display as your
changes are applied.

BACnet Service Menu
Each controller’s MAC address, Device Instance, and Baud rate are set in the BACnet sub-menu of the service menu accessed
through an LCD thermostat or LCD setup tool. For information on how to select a MAC address and Device instance for any
controller on a network, see following pages.
To set the controller’s BACnet settings, enter the Service Menu and adjust settings as follows:
NOTE: When the screen displays a flashing value, that value is ready to be changed and can be adjusted by pressing the arrow
keys. Pressing Menu will save the value.
Hold down the Menu button on the LCD Thermostat for
5 seconds until prompted for a passcode; use and
to enter the passcode; DOWN, UP, UP, DOWN.
The screen will now display “Service Menu: Application.”
Scroll down to the BACnet sub-menu.
Press the Menu button to enter this menu.
Screen will now show ‘MAC set in Hardware’, this is a default
setting that means the physical DIP switched on the BACnet
board must be set to set the MAC address. For easier setup,
Price recommends setting the MAC over software which will
override the DIP switch settings.
Use the up arrow to scroll to whatever MAC you are intending
to set this controller to, once you arrive at the number, press
Menu to save
5 SECONDS
THEN
SERVICE MENU:
APPLICATION
THEN
SERVICE MENU:
BACNET
THEN
MAC ADDRESS:
SOFTWARE 0
MAC SET IN:
HARDWARE THEN
Use Price supplied CAT-5 cables for BACnet whenever
possible. If not possible to use Price supplied cables,
follow these wire specifications.
Network Wire Specifications
For the BACnet MS/TP network specific wire is required.
Do not use standard power or “thermostat” wire. This
wire does not have the necessary requirements for digital
communications. While it’s possible it may work (temporarily)
the network will be unreliable and not operating at optimal.
BACnet MS/TP Wire type recommendations
• Use 1 balanced twisted pair
• Low capacitance (17pF or less)
• Plenum rated (FT6, CMP ratings)
• 100-120 ohm, Balanced
• (CAT5, CAT5E, CAT6 network cable has excellent
specifications and will work in almost any BACnet MS/TP
application.)
• Price recommends using the Orange Complement
for (+), the Orange for (-), and the Brown and Brown
Complement for the (NET COM) connections. These
are paired in a standard CAT5E cable. Pre-terminated
CAT5 cables are available from Price. Model code:
NETC35 (35 ft plenum rated cable, terminated with RJ45
plugs, 568-B standard)
NOTE: NETCOM MUST BE WIRED
PIN 1
PIN 3
PIN 5
PIN 7
PIN 2
PIN 4
PIN 6
PIN 8
WIRING
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NETWORKING & SETUPNETWORKING & SETUP

Setting the MAC Address:
MAC (media access control) must be UNIQUE on an MS/TP network segment within building. An installer setting up an
MS/TP segment must ensure each device has a UNIQUE MAC Address (Range 1-99). The MAC Address is set through
the LCD thermostat or LCD setup tool.
NOTE: Each device on a network segment must be set to run at the same speed or baud rate.
BACnet Networking and Setup
NETWORK SEGMENT #1
NETWORK SEGMENT #2
24 VAC power HOT and COMMON polarities are critical and must not be reversed on ANY devices! Reverse polarity will stop
communication on that MS/TP segment. All 24 VAC transformers must be grounded on their secondary side for BACnet to work.
NET COM wire must be connected at each device and is critical for BACnet network reliability.
Use one twisted pair for + and -, and another twisted pair for NET COM for optimal noise cancellation.
TECH TIP
NET COM
NET COM
NET COM
NET COM
The device instance defaults to 100, but will be displayed with
the last 2 digits as the MAC if the previous screen was set to
enabled. Press Menu then use the arrow keys to change the
device instance.
NOTE: Each Menu press will change allow changes in different
tiers of the device instance (so that you don’t have to scroll for
extended periods to get into the millions range – supposing
that’s where you need to set your device instance)
The baud rate is the speed that the MS/TP network runs at.
EVERY device on the network must run at the same speed.
Price controllers are defaulted to a baud rate of 76800, but can
be changed to 38400, 19200, or 9600. For a network segment
with all Price controllers (including Price PRTU systems), it’s
recommended that the baud rate be left at 76800.
*Choose lower baud rates only when integrating with devices
by other manufacturers whose maximum speed is lower than
76800 (eg. 38400).
THEN
THEN
OR
OR
DEVICE INST.
101
BAUD RATE
76800
Once all settings are made, scroll down to press Menu to exit, and press Menu. The controller will then re-start, this is because all
BACnet info is only read once at startup. If you had left the MAC set in hardware, and adjusted the DIP switch settings to set the
MAC address, you would have to manually restart the controller by cycling 24 VAC power for the new MAC address to take effect
(setting through software makes the restart happen automatically however).
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NETWORKING & SETUPNETWORKING & SETUP

Setting the Device Instance
Device Instance:
A Device Instance number identifies a device within an entire building, therefore giving it a unique number or Address,
much like a telephone ext. number. A building can have one telephone number, but all the extensions have a unique
number to identify them. A Device Instance number would work the same way and must be unique throughout the building.
The Device Instance number is user set through the LCD Thermostat or LCD setup tool.
Below is a table defining how a Device Instance number is obtained.
NOTE: Each device on a network segment must be set to run at the same speed or baud rate.
Example Device Instance setup with Default settings:
• MAC Address = 6 (6 x 1 = 6) – Set through software
+
TIER 1 = 58 (58 x 100 = 5800) – Set through software
+
TIER 2 = 1 (1 x 10,000 = 10,000) – Set through software
+
TIER 3 = 0 (0 x 1,000,000 = 1,000,000) – Set through software
=
Final Device Instance = 0,015,806
Description Default Value (Factory) Notes
MAC Address 6 Value: limited to 1-99
Tier 1 (x100) 58 Value: limited to 0-99
Tier 2 (x10,000) 1 Value: limited to 0-99
Tier 3 (x1,000,000) 0 Value: limited to 0-4
0 01 58 06
Tier3
Multiplier
Tier2
Multiplier
Tier1
Multiplier
MAC
Address
When using a controller with a DIAL thermostat,
the you must purchase a setup tool in AIO known
as LCD-SETUP and use this to configure the
controller. Remember, all settings are stored in the
PIC controller and not the thermostat.
TECH TIP
LCD-SETUP
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NETWORKING & SETUPNETWORKING & SETUP
LINKER - USB Service Tool
The Price USB LINKER is the interface that can be used with any of the Price Thermostat for the PCMB. The LINKER connects
to a laptop (not supplied) via a USB A to B cable supplied by Price, and then connects to the service jack of the thermostat via an
RJ-12 cable supplied by Price. Setup of the controller can then be performed using the connected laptop.
LAPTOP CONNECTION
An LCD Thermostat can be purchased as an upgrade and used to perform setup/balancing instead of a laptop/LINKER Tool. The
LCD Thermostat provides full functionality for system setup.
Laptop
Setup Tool
USB A-B Cable
Connects into
laptop & LINKER
LINKER
Interface
RJ-12 Cable
Plugs into LINKER
& then into bottom
of thermostat
Dial Thermostat
LCD CONNECTION
LCD Thermostat
Setup Tool
RJ-12 Cable Dial Thermostat

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PCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATINGPCM - INTERIOR AND PERIMETER ZONES COOLING AND HEATING
MAINTENANCEMAINTENANCE
Fault Solution
BACnet Communication Errors Price does not use EOL or termination on their devices. Terminating a device is almost never
required at the low baud rate of MS/TP devices. In fact terminating can create more problems
than it solves.
The network speed or baud rate must be the same throughout the network.
NOTE: The default speed for Price BACnet MS/TP controls is 76800. BACnet MS/TP currently
supports 4 standard speeds which are: 9600, 19200, 38400 and 76800.
BACnet Communication Errors Binary Address must be unique for each device on the network. No two devices can have the
same Address. This includes if you are incorporating a Price product into an existing network.
Determine the existing Addressing scheme for the existing network. The Address is set on the
Addressable DIP switches on the PCM.
BACnet Communication Errors Grounding and 24VAC polarity: Proper grounding is absolutely essential when wiring the MS/
TP BACnet Network. Proper grounding will prevent many potential problems that can occur in a
network of devices. Common symptoms of a poorly grounded network can include inconsistent
BACnet MS/TP communications and damage from voltage spikes. The most practical method of
grounding is to ground every 24VAC transformer common/neutral used to power the controls.
Connect the “common/neutral” wire of the SECONDARY side of the transformer to earth ground
– such as the ground screw on in the electrical box.
BACnet Communication Errors NOTE: Flipping 24VAC HOT and COMMON will cause the BACnet MS/TP Network to stop
communicating!!! Ensure HOT and COMMON are not reversed on ANY controllers.
WARNING: Controllers will still power up and run even if HOT and COMMON are reversed.
However output signals to other devices such as heaters, relays, etc will not work as intended!
Hardware Specifications
Power Requirements 24VAC, 47-63 Hz 6VA (not including output loading) NEC Class II
Ambient Ratings 32º to 131º F (0º to 55º C) 10 to 90% RH (non-condensing)
Outputs
24VAC Binary Output. Max 0.5Amps
Analog 0-10 VDC (x2). Max: 10mA each - Heat, Aux
Damper outputs - Connect up to 30 dampers
Inputs
Thermistor Sensor (10k Type J thermistor)
Analog 0-10V inputs (x2). 20k ohm input impedance
• Thermostat Inputs
• Room Setpoint Dial
• Temperature Sensor (10K Type J Thermistor)
• Accuracy of +/- 0.5°F from 55°F to 85°F (+/ 0.25°C from 13°C to 25°C)
Communication ports
BACnet MS/TP Connection (optional)
• Communication speeds: 9,600, 19,200, 38,400, 76,800 (default)
• Maximum recommended devices per MS/TP segment: 30 LINKER port
• For local setup using Price USB LINKER service tool
Enclosure Size 15.5 in. x 12.75 in. x 4 in.
Enclosure Weight 15 lbs. (6.8kg)
Fault Solution
Controller appears to be not
responding or have no power.
Green light on the controller is
not blinking. Thermostat green
indication light not on, or LCD
screen is blank.
Check thermostat first for either green indication light, or LCD display. If either of these does not appear,
then check the controller for power (green blinking light). If no power is present, check 24VAC power with
a multimeter. Cycle power to the controller. If this doesn’t restore power, check the power that is feeding
that controller for your problem.
Dampers don’t move, and red
FAULT light is illuminated.
Red fault light means there is a short in the cable from CW/CCW to COM. Find shorted cable(s) in that
string of dampers and replace.
Damper acts erratically If the CW/CCW lines in the cable are shorted together (and not shorted to the COMMON), it could cause
the dampers in a string to act erratically and drive in random directions.
Find bad cable(s) in the string, and replace.
24 VAC Binary Outputs not
functioning
Ensure that the controller has 24VAC power.
Ensure that there is a call for heating or for cooling, room lights, etc. If so, check to see that the GREEN
indication light is on for the output.
The next step would be to check the device that is triggering the output like a relay. Ensure that the relay
has engaged (pulled in) for either heating or cooling application.
Check the output configuration
Analog Outputs not functioning Ensure that the PCM has 24VAC power. Check the analog output for voltage with a multimeter. You should
see a voltage in the range of 0-10VDC.
Direct Acting Output – 0VDC indicates that the field device is closed or at a minimum position. 10VDC
indicates that the field device is open or at a full open position. Direct Acting is typical with cooling
applications.
Reverse Acting Output – 0VDC indicates that the field device is fully opened or maximum position, and
10VDC indicates fully closed or minimum position. Reverse acting is typical with heating applications.
SAT Sensor Analog Input not
functioning
Ensure that there is a sensor wired to the input on the PCM controller. Check the type of sensor, should
be a 10k Ohm Type Thermistor.
BACnet Communication Errors BACnet - MS/TP is based on a RS-485 network. It must be wired in a daisy chain configuration. A daisy
chain means that there is only one main cable, and every network device is connected directly along its
path.
DO NOT use Star, Bus, “T”, or any other type of network configuration. Any of these other network
configurations will result in an unreliable network, and make troubleshooting almost impossible.
Correct polarity is imperative on MSTP wiring. Always ensure that the positive terminal on a device has
the same color wire connected to it throughout the network, same for the negative terminal. Eg. 2 wire
conductor with black and white wires – black to the positive terminal, and white to the negative terminal.
Keep this consistency throughout the network.
Troubleshooting
The following information is provided in the event that the PCM does not appear to function properly after installation.

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