Prolon C1050 Series Installation instructions

HARDWARE GUIDE
Heatpump Controller C1050 Series
Specifications and Operational Guide
REV. 7.3.0
PL-HRDW-HP-C1050-C/F-EN
www.proloncontrols.com |[e-mail]
17 510, rue Charles, Suite 100, Mirabel, QC, J7J 1X9

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Table of Contents
General Information ....................................................................................................................................................... 4
PL-C1050 Heatpump Controller.....................................................................................................................................................................4
Description............................................................................................................................................................................................................4
General Behaviour..............................................................................................................................................................................................4
Operating Sequence ....................................................................................................................................................... 5
General...................................................................................................................................................................................................................5
Occupied Mode...................................................................................................................................................................................................5
Unoccupied Mode..............................................................................................................................................................................................5
Components .................................................................................................................................................................... 6
Component Identication...............................................................................................................................................................................6
LEDs .........................................................................................................................................................................................................................7
Addressing Dipswitch Conguration for Network Communication................................................................................................7
Input and Output Identication....................................................................................................................................................................8
Inputs ............................................................................................................................................................................... 9
Analog Input.........................................................................................................................................................................................................9
Temperature Sensors ........................................................................................................................................................................................9
Occupancy Mode (Night Setback) ............................................................................................................................................................ 10
Proof of Fan........................................................................................................................................................................................................ 10
Dry Contact for Alarm Signal........................................................................................................................................................................11
Outputs .......................................................................................................................................................................... 12
Output Specications .....................................................................................................................................................................................12
Typical Connection of the Triac Outputs 1 Through 4 ........................................................................................................................13
Typical Connection of Output #5................................................................................................................................................................13
Power Source / Network ............................................................................................................................................... 14
Power Source .....................................................................................................................................................................................................14
Network Communication..............................................................................................................................................................................14
Technical Specications ............................................................................................................................................... 15
Compliance .................................................................................................................................................................... 16
FCC User Information ..................................................................................................................................................................................... 16
Industry Canada .............................................................................................................................................................................................. 16
Overall Dimensions........................................................................................................................................................17

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Table of Figures
Figure 1 - Component Identication..................................................................................................................................................................6
Figure 2 - LEDs Identication................................................................................................................................................................................7
Figure 3 - Addressing Dipswitches......................................................................................................................................................................7
Figure 4 - Input and Output Identication.......................................................................................................................................................8
Figure 5 - Analog input ...........................................................................................................................................................................................9
Figure 6 - Connecting the Temperature Sensors...........................................................................................................................................9
Figure 7 - Night Setback Contact Connection............................................................................................................................................. 10
Figure 8 - Connecting the Proof of Fan Contact to the Controller ....................................................................................................... 10
Figure 9 - Connecting the Alarm Contact to the Controller ....................................................................................................................11
Figure 10 - Connection of Outputs 3 and 4 ...................................................................................................................................................13
Figure 11 - Connecting the Analog Output (External Power) .................................................................................................................13
Figure 12 - Connecting the 24VAC Power Source........................................................................................................................................14
Figure 13 - Connecting to the Network...........................................................................................................................................................14
Figure 14 - C1050 Size Diagram..........................................................................................................................................................................17

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Description
The Prolon PL-C1050 Heatpump controller is a microprocessor-based controller designed to operate residential or
commercial heatpump equipment. It uses PI (Proportional-Integral) control loops and acts as a master when used on a
network with Prolon zone controllers.
The Standalone model of this controller will not act as a master to other Prolon zone controllers, relying instead on the
demand provided by a local sensor.
General Behaviour
Although fully congurable, the Prolon C1050 Heatpump controller uses pre-established control sequences or ’’proles’’
to operate specic HVAC equipment with dedicated output functions. These can be fully optimized to obtain the best
results for each type of system. Numerous parameters enable the modication or ne tuning of the fan, the compressor
outputs, the action of the heating outputs (On-or-O / pulsed / modulating), the proportional bands, integration times,
dierentials, operational ranges, setpoints and a whole range of limits and safeguards. The various programming op-
tions also allow the user to modify unoccupied mode settings, morning warm-up and supply air pre-heating sequences
as well as the network demand control strategy best suited for the building space it is controlling. All these parameters
can be accessed by using the Prolon Focus software.
General Information
PL-C1050 Heatpump Controller

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Operating Sequence
General
The Prolon C1050 Heatpump controller receives readings from three dierent temperature sensors: outside air, return
air and supply air. Also, as a Master device, it receives data from the zone controllers or thermostats sent on the network
bus. The controller then analyzes all the data and demands sent by the zones and commands the appropriate outputs
to respond accordingly, within parameters set by the temperature sensors and other safety limits. When working as a
network Master, it sends back information to its network such as supply air temperature, occupancy status and other
relevant data for the zone controllers to use.
Occupied Mode
The controller operates the fan. When there is a cooling demand from the zones, the Heatpump controller will put the
reversing valve into cooling mode and activate the compressor outputs as long as all temperature limits, delays and
other related parameters are respected. Once the demand is satised, the outputs are deactivated within the prescribed
minimum on/o time delays.
When there is a heating demand from the zones and the outside temperature is above the low balance point, the Heat-
pump controller will put the reversing valve into heating mode and activate the compressor outputs as long as all tem-
perature limits, delays and other related parameters are respected. If the outside temperature is below the low balance
point, the controller will activate the auxiliary heating outputs. If the heatpump is congured for water-to-air mode, the
low balance point is ignored and the use of compressors is permitted all year round. Protection sequences are in place
that will activate auxiliary heat upon failure of the compressors. Once the demand is satised, the outputs are deactivat-
ed within the prescribed minimum on/o time delays.
When there is no cooling or heating demand from the zones, only the fan is enabled. If the heating equipment permits,
a supply air pre-heating sequence may be enabled. This allows cold mixed air to be heated to a more comfortable level
for subsequent use by the zones for ventilation.
Unoccupied Mode
The fan can be congured to operate in intermittent mode. When there is a cooling or heating demand from any single
zone, the Heatpump controller will activate the fan and the necessary cooling or heating outputs as long as all tempera-
ture limits, delays and other related parameter are respected. Once the demand is satised, the fan and any cooling/
heating outputs are deactivated within the minimum on/o time delays set.
During the unoccupied period, the Heatpump controller can be driven by the highest demand on the network and will
operate the fan and relevant outputs accordingly.

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Components
Component Identification
Legend:
A-Analog Input Signal Mode Jumpers
B-Addressing dipswitch
C-Jumpers for terminating and bias resistors for the INT port (see I)
D-Jumpers for terminating and bias resistors for the NET port (see K)
E-SOURCE/SINK dipswitch for Output 4
F-SOURCE/SINK dipswitch for Output 3
G-SOURCE/SINK dipswitch for Output 2
H-SOURCE/SINK dipswitch for Output 1
I-INT port for RS485 communication (terminal block)
J-Alternate terminal blocks for 24 VAC (provides power to an optional digital sensor)
K-NET port for RS485 communication (terminal block)
L-Inputs (4 total)
M-Terminal Blocks for Outputs 1 to 5
N-Terminal Blocks for 24 VAC
INT
BIAS THERM
DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
NET
BIAS THERM
UI3
UI2
UI1
Figure 1 - Component Identification

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LEDs
The C1050 has various LEDs which are linked to dierent functions and outputs of the controller. Each LED is individually
identied to help the user make a quick visual diagnostic of the controller’s activity and status.
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
Blue light: Internal 24VDC power source OK
Status light for analog output 5
Status light for triac output 4
Status light for triac output 3
Status light for triac output 2
Status light for triac output 1 (Fan)
Red light: Transmission to interface
Reserved
Figure 2 - LEDs Identification
Green light: Reception from INT port
Blue pulsing: indicates that
the CPU is online
Red light: Transmission to main bus
Green light: Reception from main bus
Addressing Dipswitch Configuration for Network Communication
A unique address must be congured on each controller by setting the rst 7 switches on the addressing dipswitch to
the desired value.
These switches are numbered from 1 to 7 and represent a binary value from 1 to 64 (1, 2, 4, 8, 16, 32, and 64 respectively).
The last switch (#8) is reserved. The value of each switch that is in the ON position is added together to form the numeri-
cal address of the controller.
The example in Figure 1 shows the switches 1, 2 and 4 in the ON position. Therefore, the corresponding values are 1, 2
and 8, giving an address sum of 11.
The Prolon network allows a maximum of 127 addresses, therefore 127 controllers.
Figure 3 - Addressing Dipswitches

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Figure 4 - Input and Output Identification
Input and Output Identification
All the inputs and outputs of the C1050 use pluggable screw type terminal blocks with elevator style clamping, which
make connections easier and more secure. Output functionality will vary depending on the number of compressors in
use (1 or 2 - see below).
The C1050 Heatpump Controller has 2 separate communication ports oering varying functionality based on whether
or it is a heatpump standalone controller (HPS) or not (HP).
DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
PL-C1050-HP PL-C1050-HPS
1 Compressor 2 Compressors
PL-C1050-HPS: Power supply to digital sensor (24 VAC)
Output 5 - Preheating /
Aux Heat / Econo
Output 4 - Aux Heat
Output 3 - Rev Valve
Output 2 - Compressor 1
Output 1 - Fan (G)
Controller’s power source Unit’s R&C terminal (24VAC)
Output 5 - Aux Heat
Output 4 - Rev Valve
Output 3 - Compressor 2
Output 2 - Compressor 1
Output 1 - Fan (G)
External dry contact for night setback or proof of fan
Outside temp (10K therm), water intake temp (10K therm)
or dry contact for alarm
Supply temperature sensor (10K thermistor)
Common for all the inputs
Return temperature sensor (10K thermistor)
NET Port: Prolon digital temperature
Sensor - OR - Incoming RS485
network communication (Modbus)
NET Port: Outgoing RS485
network communication
to zones (Modbus)
INT Port: Prolon digital temperature
sensor - OR - Incoming RS485
network communication (Modbus)
INT Port: Incoming RS485
network communication
(Modbus)

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Inputs
Temperature Sensors
he C1050 Heatpump controller has three analog inputs that monitor outside air, return air and supply air temperatures
and will integrate these readings into its control sequence. The sensors used are standard 10k type 3 thermistors that
share a single common connection.
Alternatively, the supply air temperature can be retrieved from a zone controller that has its own supply sensor and
belongs to the C1050’s network.
The outside air temperature can be also be provided by an alternate source. If a network controller is present on the
network, it can retrieve the outside temperature reading from one controller and distribute it to any other controllers on
the network.
Figure 6 - Connecting the Temperature Sensors
Analog Input
Figure 5 - Analog input
The C1050 series controllers are equipped with three general purpose analog inputs. These inputs can be congured to
receive signals of the following types:
• Thermistor (Ω) •0-5V
• 4 -20mA •0-10V
When a thermistor is used, the thermistor must be 10KΩ TYPE 3.
Each C1050 analog input is equipped with a fast-switching barrier diode to protect against surges and short circuits.
By default, the C1050-HP analog inputs are set up for thermistor mode. The input signal mode can be changed by setting
jumpers U1, U2 and U3, situated inside the casing, in the desired position:
JUMPERS
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET RS485
INT
INT
BIAS THERM
NET
BIAS THERM
UI3
UI2
UI1
Supply air sensor
Return air sensor
Outside air sensor

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Proof of Fan
Figure 8 - Connecting the Proof of Fan Contact to the Controller
The C1050 has a digital input that can be used to receive the proof of fan signal. Please refer to Figure 9 to see how to
correctly connect it. To indicate proof of fan, the contact must be closed. NOTE: This input can instead be used as an
occupancy contact input, depending on the software conguration.
Occupancy Mode (Night Setback)
Figure 7 - Night Setback Contact Connection
Temperature setback savings can be obtained by using a dry contact originating from an external timer to switch the
controller from occupied to unoccupied mode. The timer contact used must be connected to the "OCC" and the "GND"
terminals. To indicate occupied mode, the contact must be open. To indicate unoccupied mode, the contact must be
closed. If operating as a network Master, the Heatpump controller will then send the occupancy status to all known
slaves on his network. NOTE: This input can instead be used as a prof of fan input, depending on the software congura-
tion. Alternatively, occupancy can be supplied by the NC2000 network controller.
HBEAT S TAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Timer
HBEAT S TAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET RS485
INT
Proof of pump

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Dry Contact for Alarm Signal
Figure 9 - Connecting the Alarm Contact to the Controller
The C1050 has an analog input which can be designated as an alarm signal input. Please refer to Figure 9 to see how to
correctly connect it. To signal an alarm, the contact must be closed. Closing this contact will prevent the use of the com-
pressors, either in heating or cooling. Auxiliary heating will still activate as required.
HBEAT S TAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Alarm

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Outputs
Output Specifications
Output Type Action Applications
(1 Compressor)
Application
(2 Compressors)
1Triac Source: 24VAC
Max Current: 300 mA On-or-O Fan Fan
2Triac Source: 24VAC
Max Current: 300 mA On-or-O Compressor Compressor (1st Stage)
3Triac Source: 24VAC
Max Current: 300 mA On-or-O Reversing Valve Compressor (2nd Stage)
4Triac Source: 24VAC
Max Current: 300 mA On-or-O Auxiliary Heat Reversing Valve
5
Congurable Analog Output:
- 0 to 10 VDC
- 2 to 10 VDC
- 0 to 5 VDC
Max Current: 40mA
Modulating
Proportional /
Pulsed /
On-or-O
Preheating /
Auxiliary Heat
(2nd Stage )/
Economizer
Auxiliary Heat
The C1050 Heatpump controller contains 5 customizable outputs, 4 being Triac type switch outputs and one being
0-10Vdc analog modulating / pulsed / On-or-O output. Some outputs are congurable and follow a proportional and
integral algorithm (PI) to ensure precise adjustment of the device. Output conguration is performed via the Prolon
Focus software.
An integrated resettable fuse protects each of the four Triac outputs of the C1050 against current surges and short cir-
cuits. This protection will cut the current to the output as soon as an overload condition is detected. It consists of a round
yellow-coloured thermal fuse that will change to orange and heat up on a short circuit condition. When the faulty wiring
or circuit is xed, the breaker will automatically reset and activate the output again.

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Typical Connection of the Triac Outputs 1 Through 4
Typical Connection of Output #5
On the C1050 Heatpump controller, all triac outputs must be set to SOURCE mode because they all share a single source
supply: the equipment’s transformer. All triac outputs have a SOURCE / SINK conguration switch; they must be set to
“SWITCH” (move switch towards terminal blocks). Only the terminal blocks marked 24 VAC are used for each output.
Output 5 is an analog output 0-10 VDC. It can be congured to modulate a 0@10 VDC load, to pulse a 0 or 10 VDC Triac
relay or to control a 10 VDC On/O relay.
Figure 10 - Connection of Outputs 3 and 4
Figure 11 - Connecting the Analog Output (External Power)
(W1)
Equipment Terminal Board
(Y2)
DO3
DO4
AO
DO3 DO4 AO
(+)
SSR
External Load
(-)
DO3
DO4
AO
DO3 DO4 AO

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Power Source / Network
Power Source
Network Communication
The Prolon controller is powered by the HVAC equipment’s 24 VAC supply by connecting the common or ’’C’’ wire to the
"COM" terminal and the live or ‘’R’’ wire to the "24 VAC" terminal. The common for all inputs and outputs is the same as
the power source’s common. All output power sources also originate from the controller’s power source.
Figure 12 - Connecting the 24VAC Power Source
Figure 13 - Connecting to the Network
The Prolon C1050 Heatpump controller is primarily designed to work with Prolon zone controllers. When they are net-
worked, the Heatpump and zones all communicate in real-time using Modbus RTU protocol over RS485. The network
connections are made using the NET terminal block located on the Prolon controller.
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Tow a rd
network
NL
120VAC24VAC
DO1
DO124V

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Supply: 24 VAC ±10%, 50/60 Hz, Class 2
Consumption: 2 VA (Consumption), 32 VA (Input)
Inputs: 4 congurable inputs with selectable functions (outside temp / return temp / supply temp / water intake temp /
night setback / proof of fan / alarm)
Digital outputs: 4 triac outputs, 10-30 VAC source or dry contact, 300 mA max (resettable fuse)
Analog output: 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC, 40 mA max (resettable fuse)
Indication lights (LED): State of each output / Communication / Power / State of microprocessor
Microprocessor: PIC18F6722, 8 bits, 40 MHz, 128KB FLASH memory
Casing: Molded ABS, UL94-HB
Communication (HP): Modbus RTU (RS485) or BACnet MS/TP (RS485), up to 127 nodes
Communication (HPS): Modbus RTU (RS485), up to 127 nodes
Baud rate: 9600, 19200, 38400, 57600, 76800, 115200
Connection: Removable screw-type terminal blocks (16 AWG max)
Dimensions: 6.2” x 5.2” x 2.5” (157 mm x 132 mm x 64 mm)
Weight: 0.85 lbs (0.39 kg)
Environment: -4 to 122 ºF (-20 to 50 ºC) Non-Condensing
Certication: UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B
The performance specications are nominal and conform to acceptable industry standards. Prolon Inc. will not be liable for
damages resulting from misapplication or misuse of its products.
Technical Specifications

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• FCC Compliant to CFR47, Part 15, Subpart B, Class B
• Industry Canada (IC) Compliant to ICES-003, Issue 5: CAN ICES-3 (B)/NMB-3(B)
• RoHS Directive (2002/95/EC)
FCC User Information
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Caution: Any changes or modications not approved by Prolon can void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a resi-
dential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment o and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Industry Canada
This Class (B) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment regulations.
Cet appareil numérique de la Classe (B) respecte toutes les exigences du Réglement sur le matériel brouilleur du Canada.
Compliance

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DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
COM
COM
COM
COM
COM
REV. 7.3.0
PL-HRDW-HP-C1050-C/F-EN
5.3"
(135 mm)
6.5"
(165 mm)
2.2"
(55 mm)
Figure 14 - C1050 Size Diagram
Overall Dimensions
© Copyright 2021 Prolon. All rights reserved.
No part of this document may be photocopied or reproduced by any means, or translated to another language without prior written
consent of Prolon. All specications are nominal and may change as design improvements are introduced. Prolon shall not be liable for
damages resulting from misapplication or misuse of its products. All trademarks are the property of their respective owners.