meitav-tec PYROBOX3/19 User manual

PYROBOX3/19
PYROBOX3C/19
PYROBOX5/19
Installation and Operating manual
Rev. 5.3.7

Index
Introduction…………………………………………………………………...……. 4
PYROBOX Installation notes ……...…………...………………………………..5
Wiring the PYROBOX3/19………………………………………………………. 6
Wiring the PYROBOX3C/19…….………………………………………………. 7
Wiring the PYROBOX5/19………………………………………………………. 8
Connecting snow sensors and PYROBOX/19 slaves……………….…….... 9
Installation and Wiring Connections – PYROSENSE…………………………10
Installation and Wiring Connections – PYROSENSE-GUTTER……………. 11
Installation and Wiring Connections – PYROSENSE-GROUND…………… 12
Operating instructions………………………………………………………...…. 13
Green power lamp…………………….…………………………………………. 13
RED GOUND FAULT RESET lamp and button………………………………. 13
Turning the syste, ON and OFF………………………………………………… 13
Selecting temperature scale…………………………………………………….. 13
Selecting Automatic or Manual mode …………………………………………. 13
Heaters indication………………………………………………………………... 13
Snow flake icon and digital time indication……………………………………. 13
Technician settings……………………………………………………………….. 14
Enter technician settings mode…………………………………………...……. 14
P01 - Temperature set point……………………………………………………. 15
P02 - Lower limit temperature for heating …………………………………….. 16
P03 – Upper limit temperature for heating…………………………………….. 16
P04 -Time delay before stopping the heaters………………………………….17
P05 - Manual mode ON time……………………………………………………. 17
P06 – Heaters cycle and splitting time………………………………………….18
P07 - Heater outputs logic by PYRO sensors or by 3rd party sensor ……... 19
P08 - Snow sensor sensitivity ……………………………………………..…… 20
P88 - Snow detection threshold………………………………………………… 20
P09 - Number of snow sensors connected……………….……………….….. 21
P10 - Test conditions mode…………………………………………………….. 22
P11 – Master/Slave……………………………………………………………….23
P12 - Controller’s MAC Address……………………………………………….. 23
P13 – Not in use …………………………………………………………………. 24
P14 – Reset PYRO sensors MAC Address…………………………………… 25
P15 – Offset for calibration of measures temperature……………………….. 24
Save changes and return to normal display…………………………...…..…. 24
Restore default values………………………………………………………...…. 24
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Owner’s manual & Technician Settings
Pg. 2

Index
DIP Switch settings……………………………………………………………….. 25
DIP switch S2 - Short measuring times (test only) …………………………... 25
DIP switches S3 and S4 – heaters sequencing logic………………………... 25
Enable/Disable zones ………………………………………………………...…. 26
Select critical zones……….…………………………………………………...…. 27
BMS communication protocol – BACnet/Modbus (DIP switch S6) …...…. 28
Temperature reading errors……………………………………………………... 28
Ambient temperature sensor readings out of range………………………….. 28
Communication error with one or more snow sensors………………………..28
Upper limit temperature sensor is not connected or short circuit …………... 28
Object list - Modbus……….…………………………………………………...…. 29
Object list - BACnet……….…………………………………………………...…. 30
Appendix 1 - Calibrating and testing the internal GFEP ……….………….. 31
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Owner’s manual & Technician Settings
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Introduction
The PYROBOX3/3C/5/19/19 power boxes together with the PYROCON12/19 controller and interface
panel, offer smart and easy control over the PYRO Snow & Ice Melting system.
It can operate up to 4 snow melting zones and one auxiliary zone, with selectable sequencing method.
Typical applications include driveways, sidewalks, loading docks, stairs, pavements and gutters.
The backlit LCD screen provides full interface and information of the system status.
The use of several zones staggering allow covering larger area for snow melting with a limited available
electrical power.
The PYROBOX/19 offers various operating and programming options such as:
- Switchable temperature scales (°F or °C) - Adjustable Lower ambient temperature limit to stop
- Both Automatic and Manual modes heaters (lockout)
- Adjustable heaters cycle and splitting times - Energy saving temperature limit
- Adjustable heaters hold on off delay - Adjustable snow sensor sensitivity
- Optional auxiliary control based 3rd party - Commissioning/Test environment
snow sensor (e.g. Gutter/Pavement sensor) - Master/Slave connections
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Owner’s manual & Technician Settings
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Optional 3rd party sensor
(e.g. Gutter/Pavement sensor)
Optional PYROSENSE
(Up to 4 Aerial sensors)
(Do not run communication cables close
to heaters or high voltage wires)
General system layout
Optional PYROSENSE-GUTTER
(up to 2 Gutter sensors)
Optional T2 –
Outdoor temperature sensor
BMS (Bacnet/Modbus)
or WiFi module
Optional PYROSENSE-GROUND
(Up to 2 Ground sensors)
PYRO-JBOX
Junction Box
PYROCON19
Optional PYROULS –
Upper limit sensor
PYROBOX3/3C/5/19 Zone
1
Zone
5
Zone
2
Zone
3
Zone
4
Auxiliary control
(e.g. Gutter or
Pavement heaters)

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Owner’s manual & Technician Settings
Pg. 5
PYROBOX Series Installation
Installation notes
Familiarize yourself with the markings, warnings, components and terminology.
The PYROBOX power boxes and its accessories must be installed by a qualified electrician in
accordance with local regulations and the requirements of the NEC (NFPA 72 ) and the CEC part 1.
WARNING: Ensure the power is disconnect from all circuits before mounting the power box and
making any connections. Contact with components carrying hazardous voltage can cause electric
shock and may result in severe personal injury or death.
Installer must ensure the installation of approved disconnect means, for all power supply
circuits feeding this unit.
The power boxes are suitable for indoor wall mount installation only.
Ensure wiring according to the provided schematics using copper conductors only.
Make sure the wire gauge (AWG) is suitable for the circuit amperage draw, as specified in the
NEC/CEC table 1.
Ensure that the main breakers (fuses) are suitable for the heating systems rating (80% load).
Grounding means must comply with local regulations and CEC/NEC.
Ensure that the heating system/de-icing system connected to this unit complies with the UL 499 or
UL 515 & CSA 22.2 # 130.3 standard and is certified / listed by an NRTL.
Ensure that all wiring is rated for the application at 60°C (140°F as per UL 515 CSA 22.2 #130
clause 12 table 12.1.
Ensure that any holes punched for conduit are to compromise the integrity of the enclosure ratings.
Ground fault circuit interrupter (GFEP)
The ground fault interrupter/residual current detector installed in this system is a Non class A
GFEP, intended for equipment protection.
Familiar yourself with its operation and required setting.
At installation and commissioning stage use a calibrated milliamp meter to read and record the
heating systems natural leakage.
Set the GFI/RCD to no more than 30 milliamps higher than that reading.
This step might have to be repeated a few times, to avoid nuisance tripping.
The GFEP should be tested monthly. Please refer to the calibration and testing instructions in
appendix 1 of this manual.
PLEASE READ THIS MANUAL AND THE SAFETY WARNINGS CAREFULLY BEFORE INSTALLING
AND USING THE CONTROLLER AND SAVE IT FOR FUTURE USE

1 2 Z5 22
PYROCON19
R
C
Z1
Z2
Z3
Z4
A
B
T3 T2 B2 A2
GFEP
IN
IN
1
2
Transformer
50VA
120/24VAC
Heater load connection
277 VAC max.
30 AMP max.
Branch circuit protection and
disconnect provided by installer.
C.T (Current Transformer)
Reset Test
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Owner’s manual & Technician Settings
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Wiring the PYROBOX3/19
F-2A
R
BMS
(BACnet/
Modbus)
or WiFi
Module
Main supply 110 VAC, 1.5A
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
OUTDOOR SENSOR (option)
Should be used when only
PYROSENSE-GROUND is connected
PYROULS
Upper Limit Sensor
3rd party sensor (GIT-1/CIT-1/SIT/6E)
or dry contact switch
2
T2
L1
N1
C
ULT
T2
C
Connection to 3rd party sensor: 3-wire shielded cable
Up to 2,000 ft (609 m) using 12 AWG 3-wire shielded cable.
Up to 500 ft (152 m) using 18 AWG 3-wire shielded cable.
1
C
ESS
R
C
R
Black
White
Red
Contactors C1,C2,C3,C5
277 VAC max.
30 AMP max.
Up to 4
PYROSENSE
Aerial sensors
PYRO
JBOXs
A
B
R
C
A
B
R
C
A
B
R
C
A
B
R
C
110
110
Up to 2
GUTTER
SENOSRs
Up to 2
GROUND
SENOSRs
Up to 3
PYROBOX/19 (slaves)
Optional devices
connected to A,B
through PYRO-JBOXs
(See P09 for
instructions on how to
connect sensors)
A
B
To multiple PYRO JBOXs
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
Make sure the wire gauge (AWG) is suitable
for the circuit Amperage draw, as specified
in the NEC/CEC table 1.

Main supply 110 VAC, 1.5A
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
Reset Test
1 2 Z5 22
PYROCON19
R
C
Z1
Z2
Z3
Z4
A
B
T3 T2 B2 A2
GFEP
IN
IN
1
2
Transformer
130VA
120/24VAC
Up to 4
PYROSENSE
Aerial sensors
PYRO
JBOXs
A
B
R
C
A
B
R
C
A
B
R
C
A
B
R
C
110
110
Up to 2
GUTTER
SENOSRs
Up to 2
GROUND
SENOSRs
Up to 3
PYROBOX/19 (slaves)
Optional devices
connected to A,B
through PYRO-JBOXs
(See P09 for
instructions on how to
connect sensors)
A
B
To multiple PYRO JBOXs
C.T (Current Transformer)
277 VAC max.
30 AMP max.
Heater load connection
L1,L2,L3
600 VAC max.
50 AMP max.
per pole
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Wiring the PYROBOX3C/19
F-2A
R
OUTDOOR SENSOR (option)
Should be used when only
PYROSENSE-GROUND is connected
PYROULS
Upper Limit Sensor
3rd party sensor (GIT-1/CIT-1/SIT/6E)
or dry contact switch
2
T2
L1
N1
C
ULT
T2
C
Connection to 3rd party sensor: 3-wire shielded cable
Up to 2,000 ft (609 m) using 12 AWG 3-wire shielded cable.
Up to 500 ft (152 m) using 18 AWG 3-wire shielded cable.
1
C
ESS
R
C
R
Black
White
Red
BMS
(BACnet/
Modbus)
or WiFi
Module
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
Make sure the wire gauge (AWG) is suitable
for the circuit Amperage draw, as specified
in the NEC/CEC table 1.
3-P Contactors C1,C2
60 VAC max.
50 AMP max.
Branch circuit protection and
disconnect provided by installer.
Contactor C5
277 VAC max.
30 AMP max.

Main supply 110 VAC, 1.5A
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
F-2A
R
OUTDOOR SENSOR (option)
Should be used when only
PYROSENSE-GROUND is connected
1 2 Z5 22
PYROCON19
R
C
Z1
Z2
Z3
Z4
A
B
T3 T2 B2 A2
GFEP
IN
IN
1
2
Transformer
130VA
120/24VAC
Up to 4
PYROSENSE
Aerial sensors
Reset
PYROULS
Upper Limit Sensor
3rd party sensor (GIT-1/CIT-1/SIT/6E)
or dry contact switch
PYRO
JBOXs
A
B
R
C
A
B
R
C
A
B
R
C
A
B
R
C
110
110
Up to 2
GUTTER
SENOSRs
Up to 2
GROUND
SENOSRs
Up to 3
PYROBOX/19 (slaves)
Wiring the PYROBOX5/19
Optional devices
connected to A,B
through PYRO-JBOXs
(See P09 for
instructions on how to
connect sensors)
A
B
BMS
(BACnet/
Modbus)
or WiFi
Module
To multiple PYRO JBOXs
2
T2
L1
N1
Test
C.T (Current Transformer)
277 VAC max.
30 AMP max.
Heater load connection
L1,L2,L3 - 600 VAC max.
50 AMP max. per pole
3-P Contactors C1,C2,C3,C4
600VAC, 50A Max. per pole
Contactor C5
277VAC, 30A Max.
Branch circuit protection and disconnect
provided by installer
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1
C
ESS
R
C
ULT
T2
C
C
R
Black
White
Red
Connection to 3rd party sensor: 3-wire shielded cable
Up to 2,000 ft (609 m) using 12 AWG 3-wire shielded cable.
Up to 500 ft (152 m) using 18 AWG 3-wire shielded cable.
Caution: Incorrect voltage may cause
fire or seriously damage the unit.
Make sure the wire gauge (AWG) is suitable
for the circuit Amperage draw, as specified
in the NEC/CEC table 1.

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Connecting communicating sensors and PYROBOX/19 slaves
These devices/sensors can be connected directly to A,B terminals on the
PYROBOX/19 or through multiple PYRO-JBOX junction boxes with built
in 50VA, 110~24VAC transformer - Allowing connection and powering up
to 3 sensors.
Device/Sensor
type
PYROSENSE
Aerial sensor
Gutter sensor
Ground sensors
Number of
sensors/devices
Up to 4
Up to 2
Up to 2
Power
consumption
(24VAC)
4VA
4VA
15.6VA
Power/Comm.
cable length
32.8ft / 10m
32.8ft / 10m
32.8ft / 10m
MAC
Address
1-4
7-8
5-6
PYROBOX/19
(slaves) Up to 3 x x 14-16
A
B
PYROBOX/19
Master
PYRO-
JBOX
R C A B R C A B R C A B R C A B
110V 110V
Internal transformer
110~24VAC,50VA
Supply
110VAC
White Blue Red Black White Blue Red Black White Blue Red Black
PYROBOX/19
Slave #3
(2 wires A,B to A,B)
or Sensor #3
(4 wires R,C,A,B)
Notes:
1. Use multiple SJBs Junction
Boxes to connect up to 6 sensors
and 3 PYROBOX/19 slaves
2. A,B Communication wire to
slaves: flexible twisted pair
overall foil + braid shielded and
overall jacketed with a flexible
PVC compound, 2000 ft, (600 m)
maximum length.
PYROBOX/19
Slave #2
(2 wires A,B to A,B)
or Sensor #2
(4 wires R,C,A,B)
PYROBOX/19
Slave #1
(2 wires A,B to A,B)
or Sensor #1
(4 wires R,C,A,B)

Installation and Wiring Connections – PYROSENSE
2
3
3
1
2
2
4
4
5
2
3
4
5
3
1
1
1
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Owner’s manual & Technician Settings
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Roof installationWall mount installation
Roof side installation
The PYROSENSE aerial sensors are supplied with:
1. A plastic cap, to protect the sensor from dust and debris for when the sensor
is not in use (off season).
Important! The protective cap must be removed before use of the sensor.
If the protective cap is not removed, the sensor will not detect snow!
2. Plastic spikes, to be used if necessary, to keep birds off the sensor.

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Power cable (R,C)
18AWG - Up to 500ft / 150m
12AWG - Up to 1000ft / 300m
Communication cable (A,B)
Jacketed shielded twisted
pair 120 Ohm,
18AWG - Up to 500ft / 150m
Power cable (R,C)
18AWG - Up to 500ft / 150m
12AWG - Up to 1000ft / 300m
Communication cable (A,B)
Jacketed shielded twisted
pair 120 Ohm,
18AWG - Up to 500ft / 150m
Installation and Wiring Connections – PYROSENSE

Installation and Wiring Connections – PYROSENSE-GUTTER
Gutter sensor installation
Installation and Wiring Connections – PYROSENSE-GROUND
Ground sensor installation
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Power cable (R,C)
18AWG - Up to 500ft / 150m
12AWG - Up to 1000ft / 300m
Communication cable (A,B)
Jacketed shielded twisted
pair 120 Ohm,
18AWG - Up to 500ft / 150m
Power cable (R,C)
18AWG - Up to 500ft / 150m
12AWG - Up to 1000ft / 300m
Communication cable (A,B)
Jacketed shielded twisted
pair 120 Ohm,
18AWG - Up to 500ft / 150m

Operating instructions
Turning the system ON and OFF
Press the [SELECT] button to switch between modes:
“Automatic”
Heating will start and stop automatically depending on snow detection by the
snow sensor/sensors.
“Manual ON”
Heating will start regardless of snow sensor measurements and will stop after a
preset time (pls. refer to the “Manual ON” section in the technician settings P05).
Note: Mode will always return to “Automatic” after switching the unit OFF and ON.
Press and hold the [ON] button for 0.5 seconds to turn
the system ON or OFF.
The words “ON” or “OFF” will appear on display.
Selecting Automatic or Manual mode
Selecting temperature scale
Press the [+] button for Celsius.
Press the [-] button for Fahrenheit.
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Heaters indication
Heater ON
Heater OFF
The number beneath the heater icon indicate the heater stage (1 to 5).
Stg.
1
Stg.
2
Stg.
3
Stg.
4
Stg.
5
Black icon – Heater ON
White icon – Heater OFF
A solid snow flake icon will appear on display while sensing snow and during normal
heaters operation.
Snow flake icon and digital time indication
A blinking snow flake icon will appear on display during heaters off delay or when manual mode is
activated. The digital clock will count down the remaining time until the heaters are turned off.
The snow flake icon will disappear from display as long as the heaters are turned off.
Green POWER lamp
The green power lamp will light when
power is supplied to the unit (120 VAC)
GFEP Test/Reset button
RESET GFEP (RED button)
- Press for 5 seconds
TEST GFEP (GREEN button)
GROUND FAULT RESET lamp
will lit when the internal GFEP is tripped

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Owner’s manual & Technician Settings
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Technician settings
P01 Temperature set point
P02 Lower ambient temperature limit to stop heaters
P03 Energy saving, upper slab temperature limit to stop heaters
P04 Time delay before stopping the heaters
P05 ON time for manual mode
P06 Heaters cycle time / Splitting time
P07 Sensors and heaters control logic
P08 Snow sensor sensitivity
P88 Snow detection threshold
P09 Enable/Disable PYROSENSE sensors connected to system
P10 Commissioning / Test mode
P11 Master/Slave
P12 Controller’s MAC Address for BMS
P13 Scan the system for new sensors
P14 Reset PYRO sensors MAC Address
P15 Offset for calibration of measured temperature
Restore defaults
Move DIP switch S1 located on the side of thermostat to ON position.
Press the [SELECT] and [+] buttons simultaneously to move forward to the
next technician parameter.
Press the [SELECT] and [-] buttons simultaneously to return to the previous
technician parameter.
Enter technician settings mode
Enter technician
settings mode
Important: Changes made to technician parameters will not take effect
as long as DIP switch S1 is in ON position. Save changes
and exit
technician
settings mode
Save changes and exit technician settings mode
Move DIP switch S1 located on the side of thermostat to OFF position.
Cont’
Use the technician settings to view and adjust the following parameters:
The PYROCON19 will return to normal operation after leaving
technician settings mode at OFF state.

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Cont’
P01 - Temperature set point
Move DIP switch S1 located on the side of thermostat to ON position to enter
technician settings mode.
“P01” and the temperature set point will appear on display.
Use the [+] and [-] buttons to adjust the temperature set point.
Range: 14…59°F / -10…+15°C, default 37°F / +3°C
As long as the ambient temperature is lower than the temperature set point P01, the
heaters will turn ON upon receiving a positive snow signal from the snow detector.
Temperature
set point
Technician settings
Ambient
temperature
sensor
Snow
detector
Snow
detector
Ambient
temperature
sensor
PYROSENSE-GUTTER PYROSENSE
The controller will read the ambient temperature from the connected sensors in
the following priority:
1. PYROSENSE – aerial sensor.
2. PYRO-GUTTER gutter sensor.
3. T2 sensor – When no aerial or gutter sensors are used.
P02 - Lower limit temperature for heating
Press the [SELECT] and [+] buttons simultaneously.
“P02” and the low limit temperature will appear on display.
When the temperature on the temperature sensor drops below the low
temperature limit, the heating system will stop.
Use the [+] and [-] buttons to adjust the temperature set point.
Range: -40…+23°F / -40…0°C Default: -31°F / -35°C
Press the [SELECT] and [+] buttons simultaneously again.
The word “ON” or “OFF” will appear on display.
Use the [+] and [-] buttons enable (ON) or disable (OFF) the P02
parameter.
If disabled, the heating system will operate without low temperature
limitations.
Low limit
Temperature
P02 enabled P02 disabled

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Cont’
Technician settings (Cont’)
temperature
on heaters
sensor
P03 – Upper limit temperature for heating
Press the [SELECT] and [+] buttons simultaneously.
“P03” and the slab upper limit temperature will appear on display.
Use the [+] and [-] buttons to adjust the upper limit temperature.
Range: +41…+122°F / +5…+50°C Default: 86°F / +30°C
*For numbers above 100, “100” will appear on display.
Press the [SELECT] and [+] buttons simultaneously again.
The word “ON” or “OFF” will appear on display.
Use the [+] and [-] buttons enable (ON) or disable (OFF) the P03
parameter.
If disabled, the heaters will work regardless of the upper limit.
Press the [SELECT] and [+] buttons simultaneously again.
The display will show the temperature on the upper limit sensor.
Upper limit temp.
P03 disabled
P04 -Time delay before stopping the heaters
Press the [SELECT] and [+] buttons simultaneously.
“P04”, “dL” and the time delay before stopping the heaters (Hold ON)
will appear on display. The hours will blink.
Use the [+] and [-] buttons to adjust the hours of the time delay.
Range: 0...9 hours Default: 1 hours
Press the [SELECT] and [+] buttons simultaneously again.
The minutes will blink.
Use the [+] and [-] buttons to adjust the minutes of the time delay.
Range: 00...59 minutes Default: 30 minutes
Note 1. The time delay countdown will start when the snow detection
signal from snow sensor controlling the specific heater will switch
from positive to negative.
Note 2. The staggering sequence will continue during the time delay.
Note 3. The heater icon will blink when the heater is in off delay time.
Time delay (hours)
Time delay (minutes)
P03 enabled

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Owner’s manual & Technician Settings
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Cont’
Technician settings (Cont’)
P05 - Manual mode ON time
Press the [SELECT] and [+] buttons simultaneously.
“P05”, “On” and the “Manual ON” mode time period will appear on display.
The hours will blink.
The delay time parameter defines a time frame in which the heaters remain
ON after receiving an “Manual ON” command.
Use the [+] and [-] buttons to adjust the hours of the working time.
Range: 00...48 hours Default: 6 hours
Press the [SELECT] and [+] buttons simultaneously again.
The minutes will blink.
Use the [+] and [-] buttons to adjust the minutes of the working time.
Range: 00...59 minutes Default: 00 minutes
Manual ON
hours
Manual ON
minutes
P06 – Heaters cycle and splitting time
Press the [SELECT] and [+] buttons simultaneously.
“P06”, “SP” and the splitting time will appear on display.
The minutes will blink.
The heaters cycle / splitting time parameter defines the working time of the
heaters when working in sequence.
Example: the splitting time is set to 120 minutes and 4 heaters work in
sequence, each heater will be ON for 30 minutes (120/4=30).
Use the [+] and [-] buttons to adjust the splitting time.
Range: 1...600 minutes Default: 120 minutes.
Splitting time

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PYROBOX3/3C/5/19
Owner’s manual & Technician Settings
Pg. 18
Cont’
Technician settings (Cont’)
Value Heaters controlled by
PYROSENSE / PYROSENSE-GROUND
Heaters controlled by
PYROSENSE-GUTTER
(when connected)
3Snow on any sensor will trigger all heaters
Heaters 1,2
by PYROSENSE Heaters 3,4,5*
-
-
Heater 5
Heaters controlled by
3rd Party sensor
-
Heaters 1,2,3,4
Heaters 1,2,3,4 Heater 5 -
0
(default)
Heaters 1,2,3,4,5* - -
1Heaters 1,2,3,4 Heater 5-
-
2
-Heaters 1,2,3,4,5
4Heaters 1,2
by PYROSENSE Heaters 3,4 Heater 5 -
P07 - Heaters outputs logic controlled by PYRO sensors or by 3rd party sensor
Press the [SELECT] and [+] buttons simultaneously.
“P07” and the figures “0”, “1”, “2” or “3” will appear on display.
Use the [+] and [-] buttons to define the heaters logic (model dependent) as follows:
The snow sensors will control heaters upon the following logic:
1 Sensor 2 Sensors 3 Sensors 4 Sensors
Heaters 1,2,3,4 Sensor 1 – Heaters 1,2
Sensor 2 – Heaters 3,4
Sensor 1 – Heater 1
Sensor 2 – Heater 2
Sensor 3 – Heaters 3,4
Sensor 1 – Heater 1
Sensor 2 – Heater 2
Sensor 3 – Heater 3
Sensor 4 – Heater 4
Note: Sensors order (1,2,3,4) is defined by their MAC address order.
example: 3 sensors connected:
1 x PYROSENSE (MAC 1 – Sensor 1) - Will control heater 1
1 x PYROSENSE (MAC 2 – Sensor 2) - Will control heater 2
1 x PYROSENSE-GROUND (MAC 5 – Sensor 3) - will control heaters 3,4
*Heaters 4 and 5 will turn ON and OFF together.

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PYROBOX3/3C/5/19
Owner’s manual & Technician Settings
Pg. 19
Cont’
Technician settings (Cont’)
P08 - Snow sensor sensitivity
Press the [SELECT] and [+] buttons simultaneously.
“P08” and the snow sensor sensitivity value will appear on display.
Use the [+] and [-] buttons to adjust the sensitivity.
Range: 20...80 % (20% - Less sensitive, 80% - more sensitive), Default: 50 %
Snow sensor
sensitivity
P88 - Snow detection threshold
Press the [SELECT] and [+] buttons simultaneously.
“P88” and the snow sensor threshold will appear on display.
Use the [+] and [-] buttons to adjust the threshold.
Range: 0...60 minutes Default: 1 minutes
If the threshold is not reached, the logic of turning the heaters either ON or OFF will
not be affected by snow detection.
During countdown to threshold time, the snow flake icon will flash.
Snow detection
threshold

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PYROBOX3/3C/5/19
Owner’s manual & Technician Settings
Pg. 20
Cont’
Technician settings (Cont’)
P09 – Enable/Disable PYROSENSE sensors connected to system
Important! When new sensors are connected to the system, please refer to
technician parameter P13 - scan the system for new sensors.
After the scanning process explained in P13 completes, the sensors found
can be enabled or disabled.
Press the [SELECT] and [+] buttons simultaneously.
“P09” and the MAC address of the first sensor will appear on display.
Use the [+] and [-] buttons to select sensor.
When selected, Press the [ON] button to enable (ON) or disable (OFF)
the sensor.
Repeat the operation for other sensors (1-8) – default: 1-ON, 2-8 OFF.
Sensors MAC Address:
- MAC 1 - PYROSENSE #1 (1st aerial sensor)
- MAC 2 - PYROSENSE #2 (2nd aerial sensor)
- MAC 3 - PYROSENSE #3 (3rd aerial sensor)
- MAC 4 - PYROSENSE #4 (4th aerial sensor)
- MAC 5 - PYRO-GROUND #1 (1st ground sensor)
- MAC 6 - PYRO-GROUND #2 (2nd ground sensor)
-MAC7-PYRO-GUTTER#1 (1
st gutter sensor)
-MAC8-PYRO-GUTTER#2 (2
nd gutter sensor)
After enabling required sensors, an error message “SensErr” and the
number of the first missing sensor will appear on display indicating that
this sensor is not connected to the system.
Connect the first sensor to the system and wait for the error message to
disappear or change to the next missing sensor.
Connect the second sensor to the system and repeat the operation.
Repeat the operation for all sensors in the system.
Sensor
enabled
Sensor
disabled
Communication
error with snow
sensors