Ambirad ARC Series User manual

CONTINUOUS RADIANT TUBE HEATING SYSTEMS
ARC Series
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause
property damage, injury or death. Read the installation,
operating and maintenance instructions thoroughly
before installing or servicing this equipment.
INSTALLATION / OPERATION / MAINTENANCE
Applies to: Model ARC 120V 60Hz
Gas-Fired, Continuous Radiant
Tube Heating System
Part # 700150

2
Document Index.
1 Installation Requirements
1.1 Health & Safety
1.2 Warnings
1.3 Burner Model Definitions
1.4 Heater Suspension
1.5 Wall Mounting
1.6 Clearance to Combustibles
1.7 Gas Connection & Supply Details
1.8 Electrical Connections
1.8.1 Fan Terminal Connections
1.8.2 Pressure Switch Connections
1.8.3 Optional Modulation Damper
1.8.4 Typical Wiring Schematic
1.8.5 Typical External
1.8.6 Wiring Details
1.9 Ventilation Requirements
1.10 Ducted Air Inlet Considerations
1.11 Vacuum Fan Details
1.12 Technical Data
2 Assembly Instructions
2.1 Tools Required
2.2 Assembly Notes
2.2.1 Radiant Tubes
2.2.2 Couplers
2.2.3 Reflectors
2.2.3.1 Standard Reflectors
2.2.3.2 Perimeter Reflectors
2.2.3.3 Corner Reflectors
2.2.3.4 Tee Reflectors
2.2.4 Brackets
2.2.4.1 Suspension Brackets
2.2.4.2 Reflector Support Brackets
2.2.4.2.1 Reflector Support Attachment
2.2.5 Burner
2.2.5.1 LR Burner
2.2.5.2 Burner Head
2.2.6 End Vent Module
2.2.7 Vacuum Fan
2.3 Installation of End Vent/In-line Section
2.4 Installation of Radiant Tube to Tail Pipe
2.5 Installation of Main Reflectors
2.6 Installation of Corner Reflector
2.7 Installation of Tee Reflector
2.8 Final Fixture and Adjustments
2.9 Installation of Fan Exhaust System
2.9.1 Vertical Discharge
2.9.2 Horizontal Discharge
2.9.3 Fan Mounting
2.9.4 Condensate Trap
2.9.5 Optional Modulation Damper
2.10 Full Breakdown of Typical System
2.11 Installation of End Vent and In-line Burners
2.12 Installation of End Vent Module (EVM)
2.13 Installation of Ducted Air Adaptors
2.13.1 Burner Assembly Adaptor
2.13.2 End Vent Module Adaptor
2.14 Installation of Ball Guard System
2.14.1 Installation
2.14.2 Blanking Shield
2.15 Installation of Slimline Decorative Grille System
2.15.1 Standard Modular Assembly
2.15.2 Shortened Assemblies
2.16 Installation of Blanking Shields
2.17 Installation of Undershield Deflectors
2.18 End Vent Silencer
3 Commissioning Instructions
3.1 Tools Required
3.2 General
3.3 Commissioning Procedure
3.3.1 Start Up Checks
3.3.1.8 Burner Timer Dip-switch Settings
3.4 Set Up
3.5 Final Commissioning
3.6 Optional Damper Suction Procedure
3.6.1 Optional Damper Technical Details
3.7 Typical Unequal Balanced System Layout
4 Servicing Instructions
4.1 Tools Required
4.2 Burner Exploded Views
4.3 Vacuum Fan
4.4 Radiant Tubes
4.5 Tube Couplers
4.6 Reflectors
4.7 Condensate Trap
4.8 Burner Electrodes
4.9 Burner Head
4.10 Filters
4.11 Combustion Chamber Viewing Window
5 Spare Parts
5.1 Required Spares List
5.2 Injector/Air Shutter Selection
6 Fault Finding Guide
7 Replacing Parts
7.1 Removal of Burner Assembly
7.2 Gas Valve Replacement
7.3 Filter Replacement
7.4 Controller Replacement
7.5 Sequence Timer Replacement
7.6 Electrode Assembly Replacement
7.7 Injector Replacement
7.8 Combustion Chamber Window Replacement
8 User and Operating Instructions
8.1 To Start Heater
8.2 To Switch Off Heater
8.3 Routine Maintenance Between Service Intervals
8.4 Frequency of Servicing

3
Introduction.
radiant branches manifolded together, linked by
a tail pipe to a vacuum fan discharging the spent
products of combustion to atmosphere. A
system may comprise of just one burner and
one vacuum fan, to multiple burners in multiple
radiant branches with one or more vacuum fans.
To enable exact matching of operational needs
within an area, distances between burners and
ratings of the burners can vary. The unique
feature of ‘ARC’ series is a radiant system which
provides uniform heat coverage of the floor
area, eliminating hot/cold spots.
The tube into which the burners are mounted
and over which the reflectors are fitted and
emits the maximum heat is called the radiant
tube. The radiant heat emitted from the hot tube
is directed downwards by reflectors. The
remaining interconnecting tube is called the tail
pipe and radiates with less intensity.
The operating temperatures of the tubes
generally range from 400°F – 900°F max.
The action of the vacuum fan is three fold; to
create a high negative pressure within the
radiant tube and tail pipe so as to discharge the
spent products of combustion from the system
to a point outside the building being heated; to
control the flow of gas and air through each
burner in stoichiometric proportions; to draw
carrier air into the tube system at the start of
each radiant branch, in order to distribute the
heat from the flame along the tube.
Welcome to the range of AmbiRad ARC
Continuous radiant tube heating system. Local
regulations may vary and it is the installer’s
responsibility to ensure that such regulations
are satisfied.
All installation, assembly, commissioning and
service procedures must be carried out by
suitable qualified competent persons and
conform with local building codes, or in the
absence of local codes, with the National Fuel
Gas Code ANSI Z223.1/NFPA 54.
When assembling, installing, commissioning
and servicing is undertaken on radiant tube
heaters specified in these instructions, due care
and attention is required to ensure that working
at height regulations are adhered to at the
mounting heights specified.
PLEASE READ this document prior to
installation to familiarize yourself with the
components and tools you require at the
various stages of assembly.
All Dimensions shown are in inches unless
otherwise stated.
The manufacturer reserves the right to alter
specifications without prior notice.
The Ambi-Rad ARC Continuous radiant tube
heating system comprises of a continuous
system with a number of burners located in
series in a radiant branch, and a number of
1. Installation Requirements.
Isolate any electrical supply to the
heater and controller before proceeding. accordance with National Electric Code
ANSI/NFPA 70.
E. The heater may be installed in aircraft
hangars installed in accordance with the
Standard for Aircraft Hangars, ANSI/
NFPA 409 and in automotive garages
when installed in accordance with the
Standard for Parking Structures, ANSI/
NFPA 88A, or the Standard for Repair
Garages, ANSI/NFPA 88B, and are so
marked.
Ensure that minimum clearances will be
maintained to vehicles parked below the
heater.
For your own safety we recommend the
use of safety boots and leather faced
gloves when handling sharp or heavy
items. The use of protective eye wear is
also recommended
1.1 Health and Safety
A. Heater is intended for heating
non-residential indoor spaces and should
only be installed where flammable gases
or vapors are not generally present.
B. Heaters may be suspended either
horizontal or at an angle, or may be wall
mounted. See section 1.5 for clearance
dimensions.
C. The installation must conform with local
building codes or, in the absence of local
codes, with the National Fuel Gas Code,
ANSI Z223.1/NFPA 54.
D. The unit shall be electrically grounded in

4
gas connections should be made as indicated
Allow for system expansion, use relevant
jointing compounds on gas connections and do
not exceed maximum gas pressure at burners.
ELECTRIC HAZARDS
The heater/vacuum pump must be
grounded in accordance with the relevant
codes in the USA and Canada.
All electrical connections should be made in
accordance with these codes.
A competent electrician familiar with relevant
codes and practice should install the system.
MECHANICAL HAZARD-VACUUM PUMP
High-speed rotation of vacuum pump can
cause serious injury. Care must be taken
when working near pumps, to avoid loose
clothing becoming entangled.
Avoid touching rotating parts with hands. When
inspecting vacuum pumps ensure that electrical
supply is switched off.
TESTING AND BALANCING
On competition of installation start-up
should be undertaken by a competent gas
engineer following the commissioning
instructions provided by the manufacturer.
Special attention should be given to testing and
confirming the correct operation of the ignition
and burner fail safe system and the correct
setting of the gas pressure regulator.
ELECTRICAL/MECHANICAL HAZARDS
When checking for faults do not put hands
near rotating parts of vacuum pumps.
Do not touch live electrical components or wiring
in the burner housing.
When working inside the burner-housing switch
off/disconnect the electrical supply.
HAZARDOUS AREAS
Do not install the system in hazardous
areas containing halogenated
hydrocarbons, corrosive chemicals or volatile
atmospheres. Serious injury or death can result.
1.2 Warnings
FIRE OR EXPLOSION HAZARD
Clearances to combustibles must be
maintained in all situations. Failure to
maintain clearances to combustibles could
result in a serious fire hazard, injury or death.
Minimum clearances must be maintained from
vehicles, aircraft and all items below the
system.
In locations used for the storage of combustible
materials signs shall be posted to specify the
maximum permissible stacking height to
maintain required clearances from the heater to
the combustibles. In addition the manufacturer
recommends posting these signs adjacent to
the heater thermostats for enhanced visibility
MECHANICAL/SUSPENSION HAZARD
During each operating cycle, this
equipment will expand and contract. The
suspension method, gas connection and the
total installation must safely allow for this
movement. Failure to comply with the above,
could result in serious fire or explosion hazard.
Beware of sharp edges on reflectors, tubes and
metal components. Always wear protective
gloves as sharp edges could cause injury.
Use due care in lifting any component of the
system to high level - use adequately sized
lifting tackle for the weight of the component.
Do not lift components when personnel could
be exposed to danger if the lifting tackle were
to fail.
All hooks should be closeable safety link type.
If' ‘S' hooks are utilized, they must be closed to
prevent any possibility of equipment becoming
disengaged.
Do not lean ladders or other objects against the
system. Failure to comply with any of the above
could result in serious injury
GAS EXPLOSION HAZARD
To avoid the possibility of gas leaks,
which can cause damage and death, the
Improper installation, adjustment,
alteration, service or maintenance
can cause property damage, injury or
death. Read the instructions thoroughly
before installing of servicing this
equipment.

5
1.3 Burner Model Definitions
ARCxxLR = Continuous radiant tube heater.
xx denotes kW rating. Models available; 12, 18,
24, 32, 38 and 46
1.4 Heater Suspension
1.4.1 First considerations
• Clearances from combustibles must be
maintained. (See figure 1d)
• For ease of servicing there should be a
minimum clearance distance of 1’6”
between the burners of the heating system
and the building wall. This measurement
can be reduced for perimeter type systems.
(See figure 1c).
• For ease of servicing and burner removal
minimum clearances should be maintained.
(See figure 1e and 1f). In exceptional
circumstances the burner lid may be slid
horizontally for removal thus reducing the
vertical distance.
• Ensure that the suspension is sufficiently
flexible to allow for thermal expansion.
1.4.2 Suspending the heater - General
1.4.2.1 The first support is always positioned at
the support lug suspension point on the end
vent burner combustion chamber.
1.4.2.2 Subsequent supports are placed
approximately 9ft apart, including one at each
combustion chamber location. This gives a
maximum load per support of 53lbs.
1.4.2.3 A support must always be located at a
maximum distance of 6’ 6” from a tee or elbow
fitting.
1.4.2.4 Except for the combustion chamber
support lug suspension points, suspension
support brackets are installed to support the
tube section which is then covered with
reflectors.
1.44.2.5 Tail pipe hangers are installed for the
tube section which will be without reflectors.
If there are any doubts as to the strength or
suitability of roof steelwork to which heaters are
to be suspended, please refer to a Consultant,
Architect or owner of the building.
Attachment to the heater support lugs should be
made by a ‘speed link’, D shackle, carabiner clip
or in the case of drop rods, a closed formed
hook. The hanging attachments to overhead
steelwork etc. must be purpose made to good
sound engineering practice or of a proprietary
type fixing. They must be adequately fixed and
designed to carry the whole weight of the
heater. In the event of suitable roof steelwork
being unavailable, additional steelwork should
be fitted to enable vertical hangers to be used
for suspending the heaters.
These methods are illustrated in Figure 1a and
1b. If there are any doubts as to the strength or
suitability of roof steelwork to which heaters are
to be suspended, please refer to a Consultant,
Architect, structural engineer, or owner of the
building.
The suggested mounting heights for AmbiRad
heaters are given in table 1 below.
1.5 Wall Mounting
These radiant tube heaters can be wall mounted
using the appropriate bracket.
When using the wall mounting brackets the
heater must be inclined at an angle between 35°
and 55°, when side wall (perimeter) reflectors
are not used.
Model Minimum Mounting
Heights (ft/in)
ARC12LR 10’ 0”
ARC18LR 12’ 0”
ARC24LR 13’ 0”
ARC32LR 15’ 0”
ARC38LR 18’ 0”
ARC46LR 20’ 0”
The system is assembled at high level
suspended by chains from first fixings to
the roof structure.
(First fixings by others)

6
Figure 1a. Recommended Methods of Heater Suspension.
DROP ROD CHAIN
BEAM CLAMP
3/8"Ø ROD
TURNBUCKLE
(±3"ADJUSTMENT) 2/0 GA CHAIN
(TWISTED LINK, PLATED)
TUBE
NOTE.
HOOKS ARE TO BE CLOSED
UP AFTER ASSEMBLY
OPTIONAL
REFLECTOR
BRACKET
EYE HOOKS
AMBIRAD SPEEDLINK
# 6524
SIDE #1 BACK
FRONT
"GRIPPLE" TYPE SUSPENSION
AT FIRST HANGER AFTER
BURNER AND EVER THIRD
HANGER THEREAFTER
CEILING ANCHOR
BY CONTRACTOR
FRONT & BACK BRACE IN LINE WITH TUBING & REFLECTOR SUSPENSION
SIDE #2
APPROX.
45 DEGS
Figure 1b. Bracings to eliminate sway - optional

7
Figure 1.c Overall Dimensions
1.6 Clearance to Combustibles.
The minimum clearances to combustible materials are given in table 2.
These minimum distances MUST be adhered to at all times.
The stated clearance to combustibles represents a surface temperature of
90°F (32°C) above room temperature.
Building material with a low heat tolerance may be subject to degradation at lower temperatures.
It is the installer’s responsibility to assure that adjacent material are not subject to degradation.
WARNING:
Minimum clearance from the heater must be maintained from vehicles parked below heater.
In all situations, clearances to combustibles must be maintained.
Signs should be posted in storage areas to specify maximum stacking height to maintain
required clearance to combustibles. Refer to mounting clearance tables.
WARNING:
IMPORTANT:
A - Burner Tube
B - LR Burner
C - Optional Perimeter Reflector
D - Wall
10"
11 ¼"
14"
6"
20" MINIMUM
D
B
A
6 ¾"
14"6 1/8”
C
(4” MIN - Perimeter Systems)

8
Figure 1d Diagram illustrating the clearance to combustibles
ARadiant tube; BStandard reflector; CCombustible material underneath; D Combustible material on side;
ECombustible material above; FPerimeter reflector;
Burner Model ARC12LR ARC18LR ARC24LR
End vent In-line End vent In-line End vent In-line
Below tube
Dim DWithout undershield in 44 50 44 50 44 50
Dim DWith undershield in 30 34 30 34 30 34
Dim CAbove Tube in 4
Horizontally
Dim BStandard reflector in 20 20 20 20 28 28
Dim APerimeter reflector in 12 12 12 12 12 12
Burner Model ARC32LR ARC38LR ARC46LR
End vent In-line End vent In-line End vent
Below tube
Dim DWithout undershield in 56 67 63 83 67 83
Dim DWith undershield in 30 34 31 41 34 41
Dim CAbove Tube in 4
Horizontally
Dim BStandard reflector in 28 34 28 39 28 39
Dim APerimeter reflector in 12 20 12 24 12 24
Table 2 clearance to combustibles

9
Figure 1.e Clearance for servicing - distances to walls and obstacles above.
Figure 1.f Clearance for servicing - distances to obstacles above.
G
18”8”
1”
50” MIN
16”
8” MIN
G
E
B - Reflector
D - Obsticalce to side
E - Obstacle over burner
F - End vent module
G - Burner lid
H - Heat shield
18” MIN
H
H

10
1.7 Gas Connection and Supply
The gas connection on the heater is ½” N.P.T
external thread.
Injector sizes and manifold pressure for the
burners are shown in the table 3. The gas
supply piping and connections must be installed
so that the minimum pressure stated is
achieved.
A gas shut off valve and union should be fitted
in the gas supply line close to the heater and a
⅛” N.P.T plugged tapping, accessible for test
gauge connection, provided immediately
upstream of the appliance gas inlet.
It is essential to provide some flexibility in the
final gas connection preferably by use of an
approved flexible gas connector or stainless
steel expansion loop.
Take care when making a gas connection
to the heater not to apply excessive turning
force to the internal controls.
Depending on the specific installation, the
flexible gas hose may be routed to the gas cock
at any of the following angles in relation to the
burner:
Care must be taken to observe the minimum
pipe bend diameter (minimum 10”, maximum
14”) & pipe expansion distance (minimum 1⅛”,
maximum 3¾”).
The correct installation as shown will allow
for approx 4” of movement due to expansion.
WARNING: Before installation, check
that the local distribution conditions,
nature of gas and pressure, and adjustment
of the appliance are compatible.
Figure 2. Correct orientation of Ball Valve
Gas Flow
Gas Flow
Figure 3. Correct Installation of Flexible
Gas Connection
WARNING: CONNECTOR MUST BE INSTALLED IN A “U” CONFIGURATION. USE
ONLY THE 24” LONG CONNECTOR OF ½” NOMINAL ID THAT WAS
FURNISHED WITH THIS HEATER.

11
1.8 Electrical Connections
This appliance must be electrically grounded
Supply 120V 60Hz single phase.
Standard heater 0.16HP.
Current rating 1.2 amp max (inductive).
Fuse: external 3 amp.
Important: All electrical work should
be done by a qualified electrician in
strict accordance with the National
Electrical Code ANSI/NFPA 70.
The electrical supply to the heater
is by three wires: live, neutral and
ground connections.
Install in accordance with all state
& local codes.
It is recommended that the
electrical circuit controlling the
heater or group of heaters are
controlled via a SmartCom
Control Panel.
SmartCom³ provides cost
effective energy for small single
heater installations through to
large multi-zone applications
requiring centralised control.
For further information, please
contact your local distributor.
Where alternative manufactures’
controls are used, please refer to
their instructions for their siting
and installation details.
Table 3 Gas Supply Pressures
WARNING: Before making electrical
connections, switch OFF the main
electrical disconnect. There may be more
than one disconnect switch. Lock out
and tag switch with a suitable warning
label. Electrical shock can cause
personal injury or death.
WARNING: FIRE OR EXPLOSION HAZARD - Expansion of the radiant pipe occurs with
each firing cycle causing the burner to move with respect to the gas line. This can
result in a gas leak producing an unsafe condition. It is therefore essential to provide some
flexibility in the final gas line connection by use of an approved armoured flexible
connector or stainless steel expansion loop as shown in the drawings.
Gas Type Natural Gas Propane
Max Supply Pressure (in w.c.) 14 14
Min Supply Pressure (in w.c.) 4.8 4.8
Gas Supply Connection ½” N.P.T internal thread
Nominal Supply Pressure (in w.c.) 7 11

12
1.8.2 Pressure Switch Connections
The pressure switch is attached to the
damper assembly
Release the plastic cap via two screws.
FOR SMARTCOM CONTROLLERS
ONLY:
connect the incoming cable to
terminal 1 - (normally closed contact) and
terminal 3 - (common contact)
Replace the plastic cap via two screws.
Note: remove label covering the 1/4” hole
3
1
CW
124
365
L.V.
CW
W5
W2V2U2
V5U5
U1 V1 W1
CW
W5
W2V2U2
V5U5
U1 V1 W1
1.8.1 Fan Terminal Connections
1.8.3 Optional Modulation Damper
The modulation damper (optional -
where fitted) is attached to the damper
assembly
The three cables from the damper
modulator unit are wired:
Black: common 0V,
Red +Hot 24V and
White: 0-10Vdc signal.
115/230V~60/1 400/460V~60/3
200/230V~60/3
C
ontrol Signal (+)
2 to 10VDC (-)
24VAC Transformer
Line
V
olts Blk (1)
Red (2)
Wht (3)
Common
+ Hot
Y2 to 10V Input
NM24-SR US
LR

13
The fan damper is wired
via a plug and socket
arrangement. The socket is
connected to the assembly
via a bracket.
Release the loose plug and
remove the cap via two
screws.
Connect the incoming 24V cable
from SmartCom #40 onto terminal L3.
Connect the incoming 0-10V cable from
SmartCom #66 and #64 onto terminals L1
and GND respectively, ensuring correct
orientation.
* IMPORTANT:
An additional cable is required between
SmartCom #2/N and contractors plug
terminal GND only if the 24VAC supply to
the panel DOES NOT originate from the
secondary of an isolating transformer.
Replace the cap and plug into socket. 24V AC LINE VOLTAGE
L3 TO #40 ON SMARTCOM
CONTRACTORS
CONNECTION PLUG
FIXED CONNECTION
SOCKET TO
DAMPER
L3
L1
G0-10V MODULATION
SUPPLY L1 TO #66
AND G TO #64 ON
SMARTCOM
See note *
1.8.4 Damper Connections

14
Tail Pipe
1st Branch Zone 1
In-line Burner
To 'Mains In' on
End Vent Burner
SmartCom³ no.2 'SLAVE' (SC3-MZ)
115V 60Hz
Mains Supply
Networking Cable
Shielded pair Beldon
9841 or equiv
Isolator
End Vent
Module
In-line Burner
Branch Zone 2
18 Awg
Shielded
Cable
Sensor
Zone 2
In-line Burner
In-line Burner
In-line Burner
2nd Branch Zone 1
End Vent
Module
End Vent
Burner
1 phase
115V Pump
115V 60Hz
Mains Supply SmartCom³
no.1 'MASTER' (SC3-MZ)
Fan Centre Relay
Sensor
Zone A
Heater Relay
18 Awg
Shielded Cable
Fan Switch
End Vent Burner
End Vent
Burner
Isolator
Isolator
Isolator
Isolator
Isolator
Isolator
Isolator
Isolator
Outside Air Sensor
(optional)
End Vent Module
Condensate Tee
1.8.5 ARC LR system - Typical External Diagram

15
Figure 4.b. LR internal wiring diagram - c/w N/O or N/C volt free Lockout contacts
MAIN
RED
FLAME SENSOR
IGNITOR
8
7
9
11
10
12
1
3
2
4
PURPLE
RED
LAMPS
ON
MAINS
BROWN
SOLENOID
GREEN/YELLOW
ON
BURNER
BLUE
BROWN
VALVE
J.S.T.
BLACK
1
3
2
VALVE
J.S.T.
BLUE
12345
BLUE
DELAY TIMER
BLUE
BROWN
GRN/YEL
N
L3
L2
L1
120V 60Hz
A1 A2
C.
N.O.
N.C.
RELAY
RED
EMC FILTER
Supply
MAINS INPUT
Detail shows
either N.O. or
N.O. contacts
Figure 4.a. LR internal wiring diagram
MAIN
RED
FLAME SENSOR
IGNITOR
8
7
9
11
10
12
1
3
2
4
PURPLE
RED
LAMPS
ON
MAINS
BROWN
SOLENOID
GREEN/YELLOW
MAINS INPUT
120V
ON
BURNER
BLUE
BROWN
VALVE
J.S.T.
60Hz
BLACK
1
3
2
VALVE
J.S.T.
BLUE
12345
BLUE
DELAY TIMER
BLUE
BROWN
N
LGRN/YEL
Supply
1.8.6 Wiring Details

16
Figure 4.c. ARC Single Zone schematic interconnecting wiring.
SmartCom Mulitizone
NEUT
LIVE 1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
Exhaust
Fan
L2
L1 (HOT)
GND
Drawing No. : 900289 R6 USA
NOTES:
REMOTE SWITCH INPUTS
should be connected by 18 Awg
cable. Max length is 325ft.
Low voltage switching inputs to
be normally open (closed circuit
to enable).
Connect to B0 & B1 for remote
ON (ie BMS time control).
REMOTE SENSOR(s) may be
placed at a max distance of 325ft
from the control unit, using
shielded 18 Awg cable.
Wiring should be kept separate
from mains wiring to minimize
noise pick up. Set within
Engineers functions for any
remote sensors.
Burner
one
Burner
two
L2
L1 (HOT)
GND
20 amp Supply
120V 60Hz 1 Ph
C
40VA
Trans
Relay
S-0700
L1
G
R
Relay
S-0755
Black Bulb
Sensor
Outside
Sensor
(where applicable)
(COMMON)
eg E.M.S.
(REMOTE ON)
(REMOTE OFF)
L2
(n.c.)

17
Figure 4.d. ARC Split Zone schematic interconnecting wiring (2 zones shown)
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
eg
E.M.S.
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
To other slave
controllers
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
To other slave
controllers
eg E.M.S.
(Slave 1) (Master)
Drawing No. :
900290 R6 USA
NOTES: NETWORK. Master-slave (Network)
communication is by shielded
twisted pair cable, RS485
compatible such as Belden 9841.
Maximum overall system length of
1650ft Connect screen to C0.
NOTE: Diagram shows a master
and ONE slave configuration**.
Wire further slaves in parallel.
REMOTE SWITCH INPUTS should
be connected by 18 Awg cable.
Max length is 325ft. Low voltage switching inputs to be
normally open (closed circuit to
enable).
Connect to B0 & B1 for remote ON
(ie BMS time control).
REMOTE SENSOR(s) may be
placed at a max distance of 325ft
from the control unit, using shielded
18 Awg cable.
Wiring should be kept separate
from mains wiring to minimize noise
pick up. Set within Engineers
functions for all remote sensors.
Burners
Zone A
Burners
Zone B
20 amp Supply
120V 60Hz 1 Ph
C
Relay
S-0755 W1
S-0700
Exhaust Fan
L2
L1 (HOT)
GND
Black Bulb
Sensor
Black Bulb
Sensor
Outside
Sensor
(where applicable)
Black Bulb
Sensor
L2 L1 (HOT)
GND 15 amp Supply
120V 60Hz 1 Ph
C
40VA
Trans
Relay
S-0700
L1
G
R
L2
C
40VA
Trans
Relay
L1
G
R
L2
L2 L1 (HOT)
GND
(n.c.)

18
Figure 4.e. ARC Multi Zone schematic interconnecting wiring (2 zones shown)
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
To other slave
controllers
To other slave
controllers
(Master)
Drawing No. :
900454 R1 USA
NOTES: NETWORK. Master-slave (Network)
communication is by shielded
twisted pair cable, RS485
compatible such as Belden 9841.
Maximum overall system length of
1650ft Connect screen to C0.
NOTE: Diagram shows a master
and ONE slave configuration**.
Wire further slaves in parallel.
REMOTE SWITCH INPUTS should be connected by 18 Awg cable. Max length is 325ft. Low voltage switching inputs to be normally open (closed circuit to
enable).
Connect to B0 & B1 for remote ON
(ie BMS time control).
REMOTE SENSOR(s) may be placed at a max distance of 325ft
from the control unit, using shielded
18 Awg cable.
Wiring should be kept separate
from mains wiring to minimize noise
pick up. Set within Engineers
functions for any remote sensors.
Burners
Zone A
Exhaust Fan
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
Exhaust Fan
(Slave 1)
Burners
Zone B
eg
E.M.S.
Black Bulb
Sensor
Black Bulb
Sensor
Outside
Sensor
(where applicable)
eg
E.M.S.
Black Bulb
Sensor
Black Bulb
Sensor
Outside
Sensor
(where applicable)
20 amp Supply
120V 60Hz 1 Ph
C
Relay
W1
S-0700
C
40VA
Trans
Relay
L1
G
R
L2
L2 L1 (HOT)
GND
L2
L1 (HOT)
GND
20 amp Supply
120V 60Hz 1 Ph
C
Relay
W1
S-0700
C
40VA
Trans
Relay
L1
G
R
L2
L2 L1 (HOT)
GND
L2
L1 (HOT)
GND
(n.c.)
(n.c.)

19
Figure 4.f. ARC Single Zone system c/w motorised damper schematic interconnecting wiring.
Drawing No. : 900289R6 D USA
NOTES:
REMOTE SWITCH INPUTS
should be connected by 18 Awg
cable. Max length is 325ft.
Low voltage switching inputs to
be normally open (closed circuit
to enable).
Connect to B0 & B1 for remote
ON (ie BMS time control).
REMOTE SENSOR(s) may be
placed at a max distance of 325ft
from the control unit, using
shielded 18 Awg cable.
Wiring should be kept separate
from mains wiring to minimize
noise pick up. Set within
Engineers functions for any
remote sensors.
SmartCom Mulitizone
NEUT
LIVE 1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
L2
L1 (HOT)
GND
Burner
one
Burner
two
L2
L1 (HOT)
GND
20 amp Supply
120V 60Hz 1 Ph
C
40VA
Trans
Relay
S-0700
L1
G
R
Relay
S-0755
Black Bulb
Sensor
Outside
Sensor
(where applicable)
(COMMON)
eg E.M.S.
(REMOTE ON)
(REMOTE OFF)
L2
(n.c.)
Modulation
Damper

20
Figure 4.g. ARC Modulating Split Zone schematic interconnecting wiring (2 zones shown)
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
eg
E.M.S.
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
To other slave
controllers
SmartCom Mulitizone
NEUT
LIVE
(COMMON)
(REMOTE ON)
(REMOTE OFF)
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20
41 40 7 8 9 25 14 5 6
To other slave
controllers
eg E.M.S.
(Slave 1) (Master)
Drawing No. :
900290 R6 USA
NOTES: NETWORK. Master-slave (Network)
communication is by shielded
twisted pair cable, RS485
compatible such as Belden 9841.
Maximum overall system length of
1650ft Connect screen to C0.
NOTE: Diagram shows a master
and ONE slave configuration**.
Wire further slaves in parallel.
REMOTE SWITCH INPUTS should
be connected by 18 Awg cable.
Max length is 325ft. Low voltage switching inputs to be
normally open (closed circuit to
enable).
Connect to B0 & B1 for remote ON
(ie BMS time control).
REMOTE SENSOR(s) may be
placed at a max distance of 325ft
from the control unit, using shielded
18 Awg cable.
Wiring should be kept separate
from mains wiring to minimize noise
pick up. Set within Engineers
functions for all remote sensors.
Burners
Zone B
20 amp Supply
120V 60Hz 1 Ph
C
Relay
S-0755 W1
S-0700
L2
L1 (HOT)
GND
Black Bulb
Sensor
Black Bulb
Sensor
Outside
Sensor
(where applicable)
Black Bulb
Sensor
L2 L1 (HOT)
GND 15 amp Supply
120V 60Hz 1 Ph
C
40VA
Trans
Relay
S-0700
L1
G
R
L2
C
40VA
Trans
Relay
L1
G
R
L2
L2 L1 (HOT)
GND
Burners
Zone A
Modulation
Damper
(n.c.)