Ambirad VCLUS 40-S10 User manual

VCLUS / VCLUS HL OWNERS MANUAL
INSTALLATION / OPERATION / MAINTENANCE
Applies to: Model VCLUS/VCLUS HL 120V 60Hz
Gas-Fired, Tubular, Radiant,
Low-Intensity Infrared Heater
700111
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.
Vision Range

2
Introduction.
Document Index.
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.
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.
Welcome to the new range of powered harsh
environment infrared heaters. 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 or the
National Gas and Propane Installation Code
CSA B149.1.
When assembling, installing, commissioning
1. Installation Requirements.
and Propane Installation Code, CSA B149.1.
D. The unit shall be electrically grounded in
accordance with National Electric Code
ANSI/NFPA 70 and Canadian Electrical
Code CSA C22.1.
E. The heater may be installed in aircraft
hangars 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, or the
Canadian Natural Gas and Propane
1.1 Health and Safety
A. Heater is intended for heating outdoor or
non-residential indoor spaces and should
only be installed where flammable gases or
vapours are not generally present.
B. Heaters may be suspended either horizontal
or at any angle. See section 1.3 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 or the Natural Gas
1 Installation Requirements
1.1 Health & Safety
1.2 Heater Suspension
1.3 Clearance to Combustibles
1.4 Gas Connection & Supply Details
1.5 Electrical Connections
1.6 Ventilation Requirements
1.6.1 Unvented Units
1.6.2 Vertical Venting
1.6.3 Horizontal Venting
1.7 Fresh Air Intake
1.8 Technical Details
2 Assembly Instructions
2.1 Tools Required
2.2 Assembly Notes
2.2.1 Tubes
2.2.2 Turbulators
2.2.3 Brackets
2.2.4 Couplers
2.2.5 Reflectors
2.2.6 End Caps (optional)
2.2.7 Bends (where required)
2.2.8 Burner/Fan Assembly
2.2.9 Heating Configurations
2.2.10 Detailed Assembly Drawings
3 Start Up Instructions
3.1 Tools Required
3.2 Start up procedure
4 Servicing Instructions
4.1 Tools Required
4.2 Burner Description
4.3 Burner Removal
4.4 Burner Gas Injector Servicing
4.5 Burner Head and Electrode Servicing
4.6 Combustion Fan Assembly
4.7 Radiant Tube Servicing
4.8 Reflector Servicing
4.9 Cleaning of Vent
4.10 Re-commissioning after Service
5 Spare Parts
6 Troubleshooting Guide
7 Replacing Parts
7.1 Burner Controller Replacement
7.2 Air Pressure Switch Replacement
7.3 Gas Valve Replacement
7.4 Optional Extra Kits
8 User and Operating Instructions
8.1 To Start Heater
8.2 To Switch Off Heater
8.3 Servicing

3
Installation Code, CSA B149.1, and are so
marked.
Ensure that minimum clearances will be
maintained to vehicles parked below the
heater.
F. These heaters are approved for installations
between 0 - 2000ft (0 - 610m) for the US
and 0 - 4500 ft (1370m) for Canada. Consult
factory for installations above these heights
in the USA.
Note: Any outdoor installations must be
installed with a vent cap at the inlet and
the flue end.
1.2 Heater Suspension
Attachment to the heater support lugs should
be made by D shackle. The hanging
attachments to overhead steelwork etc. must
be purpose made to sound engineering
practice or supplied by others.
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 1. 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.
It is recommended that the heater is raised to its
final position once the assembly of the tube/
bracket/reflector has been completed. Longer
tube assemblies may be raised in more than
one sub-assembly with final tube connection
made in the air.
Ensure that the installer uses the burner roof
support mounting bracket when suspending the
heater. This is situated on the front of the
burner. When packed the bracket is reversed
and must be turned to its correct state for
mounting. (ref page 18.)
Figure 1. Recommended Methods of Heater Suspension.
WARNING:
If not installed, operated and maintained in accordance with the manufacturer’s instructions,
this product could expose you to substances in fuel or from fuel combustion which are
known to the state of California to cause cancer, birth defects or other reproductive harm.
CHAIN 55° SUSPENSION
2/0 GA CHAIN
(TWISTED LINK, PLATED)
NOTE.
HOOKS ARE TO
BE CLOSED UP
AFTER ASSEMBLY
EYE HOOKS
EXHAUST
END
BURNER
END
U TUBE VARIANTS
Suitable Chain
Working Load Limit
100lb.

4
Table 1 Clearance to Combustibles, inches (cm)
MODEL A B B1 C1 C2 C3 D1 D2 E
60 74 (188) 29 (74) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 14 (36) 10 (26)
80 74 (188) 29 (74) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 14 (36) 10 (26)
100 74 (188) 32 (82) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 16 (41) 10 (26)
125 74 (188) 39 (99) 47 (120) 6(16) / 3(8)* 8 (21) 22 (56) 20 (51) 18 (46) 10 (26)
150 74 (188) 39 (99) 48 (122) 6(16) / 3(8)* 8 (21) 22 (56) 20 (51) 18 (46) 10 (26)
170 86 (219) 48 (122) 48 (122) 6(16) / 3(8)* 11 (28) 22 (56) 20 (51) 20 (51) 10 (26)
200 86 (219) 48 (122) 48 (122) 6(16) / 3(8)* 11 (28) 22 (56) 20 (51) 20 (51) 10 (26)
40 49 (125) 24 (74) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 14 (36) 10 (26)
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. Such signs must either be
posted adjacent to the heater thermostats or in the absence of such thermostats in a conspicuous location.
Refer to mounting clearance tables.
* distance with end caps fitted.
ON U TUBE VARIANTS THE HEATER SHOULD SLOPE DOWNWARDS TOWARDS THE RETURN BEND AND
ON LINEAR VARIANTS SHOULD SLOPE DOWNWARDS TOWARDS BURNER BY APPROX. ½” FOR
HORIZONTAL INSTALLATIONS AS SHOWN BELOW (DIAGRAMS EXAGGERATED FOR CLARITY)
1.3 Clearance to Combustibles.
Minimum clearance to combustibles are shown in Table 1 below.
IMPORTANT: The stated clearance to combustibles represents a surface temperature of 90°F (50°C) above room
temperature. Building material with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, etc.) may be
subject to degradation at lower temperatures. It is the installer’s responsibility to ensure that adjacent materials are
protected from degradation.
1/2” 1/2”
U Tube heater side view U bend Linear heater side view
Outlet

5
Figure 2 Clearance to Combustibles (Standard indoor reflectors).

The minimum clearances to combustible materials are given in the tables below. These
minimum distances MUST be adhered to at all times. Adequate clearance MUST be provided
around air openings into the combustion chamber and there MUST be suitable clearance for
accessibility and for combustion / ventilating air supplies.
C2
C1
A
B1
B
B
A
E
D2
0° to 55°
D1
Ensure that there is adequate
provision in the building for
combustion and ventilation air
supply. Installation must meet
minimum requirements and
appliciable codes.
Burner end.
Outlet end.
Angled view.
End view.
C3
Below
heater
Side
vented
Side
unvented
End
unvented
Above outlet
unvented
Above
Reflector
Above
Burner
Service
distance
Return end on
U tube heater
Ensure that there is adequate
provision in the building for
combustion and ventilation air
supply. Installation must meet
minimum requirements and
appliciable codes.
WARNING!
applicable

6
1.4 Gas Connection and Supply
The gas connection on the heater is ½” N.P.T
internal thread.
Injector sizes and manifold pressure for the
burners are shown in the table 4. 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 by use of an approved
flexible gas connector. (See Fig 4.)
Take care when making a gas connection
to the heater not to apply excessive turning
force to the internal controls.
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 3. Correct orientation of Ball Valve
Gas Flow
Gas Flow
Figure 4. Correct Installation of Flexible
Gas Connection
Table 3
* Connector must be certified for use on a
radiant tube type infrared heater and must
comply with Standard for Connectors for Gas
Appliances, ANSI Z21.24/CSA 6.10 or with the
Standard for Elastomeric Composite Hose and
Hose Couplings for Conducting Propane and
Natural Gas, CAN/CGA 8.1.
For heaters up to 150,000Btu/h, ½” ID x 24”
long.
For heaters 150,000Btu/h and above, ¾” ID x
36” long.
NOTE: For Canada all heaters MUST use a
hose 36” long.
(See Table 3)
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 flexible connector as shown
in the drawings.
HOSE SIZE PART No.
3/4” A4129
1/2” A4128

7
1.5 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 or Canadian
Codes CSA C22.1.
The electrical supply to the
heater is by three wires: hot
(Live), neutral and ground
connections.
Install in accordance with all
state & local codes.
Where alternative manufacturers
controls are used, please refer to
their instructions for their
installation details.
Table 4 Gas Supply Pressures
Gas Type Natural Gas LP/Propane Gas
Required Gas Pressure (in W.C) 7.0 11.0
Maximum Supply Pressure (in W.C) 14.0 14.0
Gas Supply Connection ½” N.P.T thread
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.
Figure 5a. External Wiring Schematic. (VCLUS HL)
F2
F1
R
C
W1
W2
24V AC
Terminals
(120V AC Fan
Terminals)
120V AC
Supply
24V AC 2-Stage
Thermostat (Ext.)
RC
W1 W2
Burner 1
E
N
L
N
E
Notes:
Use 18/4 class 2 thermostat cable
between heater and thermostat.
Max. length @ 18 Awg (0.8mm²) =
100ft.
Only one burner can operate from one
thermostat as supplied.
When servicing heaters ensure the
electricity supply is isolated from the
mains.
120V AC supply is still present at each
burner when the thermostat is switched
off.
CONNECTOR MUST BE INSTALLED IN A “U” CONFIGURATION. FOR HEATERS
UPTO 150,000 BTU/H, A 24” LONG CONNECTOR OF AT LEAST ½” ID MUST BE
USED. FOR HEATERS ABOVE 150,000 BTU/H, A 36” LONG CONNECTOR OF AT
LEAST ¾” NOMINAL ID MUST BE USED.
BL
BK
KEY:
BK-BLACK
BL-BLUE
R-RED
O-ORANGE
G-GREEN
W-WHITE
R
O
BK
G
W
VCLUS models can have an optional
24V AC single stage thermostat.
(See Fig. 5c overleaf).

8
Figure 5b. Single and Multiple Heater Installations 120V Control (VCLUS)
Supply circuit
120V 60Hz 1 Ph
L2
L1 (HOT)
GND
T
110V Thermostat
other burners
Burner 1
120V Thermostat
KEY:
G-GREEN
W-WHITE
BK-BLACK
BK
G
W
W
G
BK
BK
Other burners
T
Figure 5c. External Wiring Schematic (VCLUS)
If heaters are wired using the method shown above, a link wire must be
fitted to the burner terminals as shown in the diagram opposite. Link
F2
F1
R
C
W1
24V AC
Terminals
(120V AC Fan
Terminals)
120V AC
Supply
24V AC Single Stage
Thermostat (Ext.)
RC
W1
Burner 1
E
N
L
N
E
BK
R
BL
BK
G
W
KEY:
BK-BLACK
BL-BLUE
R-RED
G-GREEN
W-WHITE
Notes:
Use 18/4 class 2 thermostat cable
between heater and thermostat.
Max. length @ 18 Awg (0.8mm²) =
100ft.
Only one burner can operate from one
thermostat as supplied.
When servicing heaters ensure the
electricity supply is isolated from the
mains supply.
120V AC supply is still present at each
burner when the thermostat is switched
off.
R
C
W1
Burner

9
If any of the original wire as supplied with the appliance must be replaced, it must be replaced
with wiring material having a temperature rating of at least 220°F/105°C
Figure 6. Internal Burner Wiring Diagram. (VCLUS)
LN
E
L1
Gas Control
MV
X
C
COM
W1
PS0
PS1
IND
R
E
Gas Valve
C
M
E
NOTES:-
Power On light is permanently illuminated when 120V / 60 Hz AC external supply is connected to burner.
Additional wiring is required to install a thermostat and / or time clock.
Wire specification:- 18 AWG (1.0mm²), Tri-rated, 105°C
Pressure Switch
120v/24VAC 60Hz
Transformer
Power ON (red)
BK BK
Y
O
BR
GR
BL
KEY:
BL - BLUE
BK - BLACK
BR - BROWN
GR - GREY
G - GREEN
W - WHITE
Y - YELLOW
O - ORANGE
P - PURPLE
BR
Y
P
YY
W
G
BK
W
G
BL BR
PGR
P
GR
BR
W
BK
LNE
120V AC
Supply
BK
NE
120V AC Fan
Terminals
CW1 R
24V Stat
Terminals
O
BL
BR
Burner On (amber)
CW1 R
Optional
24V single
stage
Thermostat
R
W
G
BK
W
G
BK
O
BL
BR
G
F
E

10
If any of the original wire as supplied with the appliance must be replaced, it must be replaced
with wiring material having a temperature rating of at least 220°F/105°C
Figure 7b. Internal Burner Wiring Diagram. (VCLUS HL)
LN
E
L1
Gas Control
MV
X
C
COM
W1
PS0
PS1 IND
R
E
Gas Valve
C
M
HI
NOTES:-
Power On light is permanently illuminated when 120V / 60 Hz AC external supply is connected to burner.
Additional wiring is required to install a thermostat and / or time clock.
Wire specification:- 18 AWG (1.0mm²), Tri-rated, 105°C
Pressure Switch
120V/24VAC 60Hz
Transformer
Power ON (red)
BK
R
Y
O
BR
GR
BL
KEY:
BL - BLUE
BK - BLACK
BR - BROWN
GR - GREY
G - GREEN
K - PINK
R - RED
W - WHITE
Y - YELLOW
O - ORANGE
P - PURPLE
BR
Y
P
YY
R
W
G
BK
W
G
BL BR
PGR
P
GR
K
BR
W
BK
LNE
120V AC
Supply
BK
F1 NE F2
120V AC Fan
Terminals
High Fire
KGR
24V AC
RELAY
21
1424
11
A2
1222
A1
High Fire
Relay
COIL
NC
NO
COM
CW2W1 R
24V AC Stat
Terminals
K
O
BL
BR
Low Fire
(amber)
CW2W1 R
24V Two stage
Thermostat
R
W
G
BK
W
G
BK
BL
R
BK
R
K
O
BL
BR
E

11
1.6 Vent Requirements and Details
1.6.1 Unvented units
Heaters may be installed without a vent
providing the governing building codes are met
and consideration is properly given to
possibilities of condensation on cold surfaces.
Installation shall meet the following
requirements when unvented:
 Internal volume of the heated room must
be greater than 214cu.ft. per 100 BTU
per hour of heaters installed.
OR
 Natural or mechanical means shall be
provided to supply and exhaust at least 4
CFM per 1000 BTU per hour input of
installed heaters.
 Combustion gasses shall not impinge on
combustible materials.
1.6.2 Vertical venting
The heater can be installed with a vertical vent.
All vent piping should be adequately supported
from the building structure and terminated with
an approved terminal. The maximum
recommended vent length is 25ft (7.6m) with
a maximum of two 90° elbows. All
connections should be properly sealed.
(refer to fig. 8a)
1.6.3 Horizontal venting
Individual units can be vented horizontally
through side walls. Recommended terminals
are part numbers V0700 for 4” and V0800 for
6”.
Distances from adjacent public walkways,
adjacent buildings, opening windows and
building openings, consistent with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 or the
Natural Gas and Propane Installation Code,
CSA B149.1.
Maximum length of vent is 25ft (7.6m) with two
- 90° elbows.
Runs of 12ft (3.6m) or shorter can use
4” (101mm) diameter vent. runs over 12ft
(3.6m) should use 6” (152mm) vent pipe.
Any portion of vent that passes through a
combustible wall must be insulated, or use an
approved insulating thimble.
Standard vent terminals must extend at least
6” (152mm) from the wall and at least
24” (609mm) from any combustible overhang.
Protect the building material from degradation
by the vent gases.
Vent joints should be sealed and secured
according to the vent manufactures instructions.
Should condensation occur the vent should be
shortened or insulated.
The terminal should be at least 3ft (0.91m) away
from any air intake to the building.
If the heater is equipped with ducted combustion
air, the vent terminal must be at least 3ft
(0.91m) away from the air inlet and located
higher than the inlet.
The vent terminal must be installed at a suitable
height above the ground to prevent blockage by
snow.
1.7 Fresh Air Intake
Whenever the heater is installed in locations
where airborne dust or other pollutants are
present, a fresh air supply should be ducted to
the burner.
A fresh air duct of 4” (101mm) diameter should
be installed from the fresh air to the air intake
connection on the burner housing. A flexible
jointing piece should be installed at the burner
connection with hose clamps to facilitate
expansion and contraction.
The maximum recommended length air duct is
25ft (7.6m) and the maximum number of elbows
is two. The minimum length is 18” (456mm).
The location of the fresh air duct inlet must be
where it will receive dust free clean air. An inlet
cap with bird screen must be fitted at the inlet of
the duct. If the duct inlet is located above the
roof the underside of the inlet terminal must be
at least 2ft (0.61m) above roof level and at least
10” (254mm) above any projection on the roof
within 7ft (2.1m) of the inlet. Intake pipe, fittings
and sealant are not furnished by the
manufacturer. Refer to figs. 8c & 8d.

12
Figure 8.a Vertical Venting.
Figure 8.b Horizontal Venting.
Figure 8.c Fresh Air Ducted Intake. Figure 8.d Wall Terminal Intake Kit.
NOTE: The vent
terminal should be
installed so as to be
in the same atmos-
pheric pressure zone
as the combustion air
inlet of the appliance
RADIANT
TUBE
REFLECTOR
4" (101mm) TO 6" (152mm) DIA. ALUMINUM ADAPTER
TERMINAL
6" (152mm)
COLLAR
SEAL JOINTS WITH
HIGH TEMPERATURE
WALL
REQUIRED ONLY FOR 6" (152mm) DIA. VENTS
ALUMINUM 4" (101mm) O.D. MAXIMUM LENGTH = 12'-0" (3.66m)
ALUMINUM 6" (152mm) O.D.MAXIMUM LENGTH = 25'-0" (7.62m)
(PLUS A MAXIMUM OF 2 x 90° BENDS
END OF
SUPPLIED BY OTHERS
COUPLER
SILICONE
INLET WITH
BIRD SCREEN
36" (914mm) MIN CENTERS
ENSURE ALL JOINTS ARE
SEALED
APPROVED CAT 3 VENT PIPE
VENT
ELBOWS
REFLECTOR
END OF RADIANT TUBE
VENT ADAPTOR ELBOW
12'-0" (3.66m)
12'-0" (3.66m)
(APPROXIMATE
MAXIMUM DIMENSIONS)
CODE APPROVED VENT
THROUGH ROOF
SEAL
SUPPLIED BY OTHERS
ROOF
4" (101mm) O.D. OR
HIGH TEMPERATURE SILICONE
SEAL JOINTS WITH
REQUIRED ONLY FOR 6" (152mm) DIA. VENT
4" (101mm) TO 6" (152mm) DIA. ALUMINUM ADAPTER
6" (152mm) O.D. FLUE
ALUMINUM
APPROVED CAT III VENT PIPE
VENT CAT III ELBOW
CAT III ADAPTER
PLAN VIEW
ALUMINUM 4" (101mm) O.D. PIPE
CLAMPS
4" (106mm) O.D. FLEXIBLE DUCT
BURNER
MAX LENGTH = 25'-0" (7.62m) WITH 2-90° LONG RADIUS BENDS
4.25” (108mm) O.D FLEXIBLE DUCT
WITH TWO– 90° ELBOWS
INLET WITH
6" (152mm)
SEAL JOINTS WITH
SILICONE OR DUCT TAPE
WALL
BIRD SCREEN
TERMINAL
36" (914mm) MIN CENTERS
VENT
SIDE VIEW
NOTE: The vent terminal must NOT be
installed below the fresh air intake.

13
1.8 Technical Details - Table 5a (VCLUS)
No of Injectors 1
Gas Connection ½” N.P.T
Electrical Supply 120 volt 1 phase 60Hz
Vent size (in) 4” or 6” (101mm or 152mm)
Unitary Fan Motor Details 120 volt 1 phase 60Hz
Current Rating 1.2A MAX
Ignition Electronic Program Start up with Spark Ignition
N/A
MODEL Natural Gas LP Gas Min. Heater
Length Max. Heater
Length
Min. Heater
Length Max. Heater Length
BTU/Hr BTU/Hr S ft (m) S ft (m) U ft (m) U ft (m)
60 60,000 60,000 20 (6.1) 40 (12.1) 20 (6.1) 40 (12.1)
80 80,000 80,000 20 (6.1) 40 (12.1) 20 (6.1) 40 (12.1)
100 100,000 100,000 30 (9.1) 50 (15.2) 40 (12.1) 40 (12.1)
125 123,500 125,000 40 (12.1) 60 (18.3) 40 (12.1) 60 (18.3)
150 150,000 150,000 40 (12.1) 70 (21.3) 40 (12.1) 60 (18.3)
170 169,000 169,000 50 (15.2) 80 (24.4) 60 (18.3) 80 (24.4)
200 200,000 N/A 50 (15.2) 80 (24.4) 60 (18.3) 80 (24.4)
40 41,500 41,500 10 (3.0) 30 (9.1) 20 (6.1) 20 (6.1)
N/A
Appliances can be installed up to 10,000 ft in the USA. Altitude conversion kits are available on request.
USA Natural Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC 4.2 3.5 3.5 4.1 4.2 3.4 3.5
40
3.2
USA LP Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC 6.0 5.2 8.2 6.6 7.0 5.7 N/A
40
4.5
USA Natural Gas 2001- 4000 ft (611-1220m)
Size 60 80 100 125 150 170 200
“WC 4.0 3.3 3.3 3.9 4.0 3.2 3.3
40
3.0
USA LP Gas 2001- 4000 ft (611-1220m)
Size 60 80 100 125 150 170 200
“WC 5.8 5.0 8.0 6.4 6.8 N/A
40
4.3
CANADA Natural Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC 4.2 3.5 3.5 4.1 4.2 3.4 3.5
40
3.2
CANADA LP Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC 6.0 5.2 8.2 6.6 7.0 5.7 N/A
40
4.5
CANADA Natural Gas 2001- 4500 ft (611-1370m)
Size 60 80 100 125 150 170 200
“WC 4.0 3.3 3.3 3.9 4.0 3.2 3.3
40
3.0
CANADA LP Gas 2001- 4500 ft (611-1370m)
Size 60 80 100 125 150 170 200
“WC 5.8 5.0 8.0 6.4 6.8 N/A
40
4.3

14
USA & CANADA Natural Gas 0- 2000 ft (0-610m)
MODEL 40 60 80 100 125 150 170 200
Burner Orifice Plate
Part No. 201063-57 201063-45 201063-29 201063-23 201063-26 201063-25 201063-24 201063-24
Fan Type 201957 202132
Fan Orifice
Part No. 201970 L200281 201654 L200281 L200262 201637 201425 201911
Injector
Part No. 201007-13 201007-15 201007-18 201007-21 201007-24 201007-30 201631-28 201631-32
Pressure Switch
Part No. 201508 201697201676
USA & CANADA LP Gas 0- 2000 ft (0-610m)
MODEL 40 60 80 100 125 150 170 200
Burner Orifice Plate
Part No. 201063-75 201063-74 201063-72 201063-56 201063-55 201063-54 201063-68
N/A
Fan Type 201957 202132
Fan Orifice
Part No. 201970 L200301 L200301 201825 L200244 L200246 202352
Injector
Part No. 201007-10 201007-11 201007-13 201007-13 201007-15 201007-17 201007-19
Pressure Switch
Part No. 201508 201676
Technical Details continued
MODEL U Tube Straight Tube
U20 U40 U60 U80 S20 S30 S40 S50 S60 S70 S80
60 ●●●●●
80 ●●●●●
100 ●●●●
125 ●●●●●
150 ●●●●●●
170 ●●●●●●
200 ●●●●●●
S10
40 ●
●●●

15
1.8 Technical Details - Table 5b (VCLUS HL)
No of Injectors 1
Gas Connection ½” N.P.T
Electrical Supply 120 volt 1 phase 60Hz
Vent size (in) 4” or 6” (101mm or 152mm)
Unitary Fan Motor Details 120 volt 1 phase 60Hz
Current Rating 1.2A MAX
Ignition Electronic Program Start up with Spark Ignition
Thermostat 24Vac 60Hz 1.5A Max. total load
MODEL Natural Gas LP Gas Min. Heater
Length Max. Heater
Length Min. Heater Length Max. Heater Length
High / Low
Rate BTU/Hr High / Low Rate BTU/Hr S ft (m) S ft (m) U (ft) U (ft)
60 60,000/45,000 60,000/45,000 20 (6.1) 40 (12.1) 20 (6.1) 40 (12.1)
80 80,000/60,000 80,000/60,000 30 (9.1) 40 (12.1) 40 (12.1) 40 (12.1)
100 100,000/65,000 100,000/65,000 30 (9.1) 40 (12.1) 40 (12.1) 40 (12.1)
125 123,500/95,000 125,000/95,000 30 (9.1) 50 (15.2) 40 (12.1) 40 (12.1)
150 150,000/100,000 150,000/100,000 40 (12.1) 60 (18.3) 40 (12.1) 60 (18.3)
170 169,000/125,000 169,000/125,000 50 (15.2) 70 (21.3) 60 (18.3) 60 (18.3)
200 200,000/150,000 N/A 50 (15.2) 70 (21.3) 60 (18.3) 60 (18.3)
40 41,500/31,125 41,500/31,125 10 (3.0) 20 (6.1) 20 (6.1) 20 (6.1)
N/A
Appliances can be installed up to 10,000 ft in the USA. Altitude conversion kits are available on request.
Natural Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC Hi 4.2 3.9 4.9 4.5 4.4 4.0 3.5
USA
“WC Lo 2.4 2.3 2.1 2.7 2.2 2.4 2.2
40
3.4
1.9
LP Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC Hi 6.1 5.2 8.2 7.6 7.2 6.8 N/A
USA
“WC Lo 3.5 3.0 3.7 4.4 3.3 3.9 N/A
40
3.7
2.1
Natural Gas 2001- 4000 ft (611-1220m)
Size 60 80 100 125 150 170 200
“WC Hi 4.1 3.7 4.7 4.3 4.2 3.8 3.3
USA
“WC Lo 2.3 2.1 2.0 2.5 2.0 2.2 2.0
40
3.3
1.8
USA LP Gas 2001- 4000 ft (611-1220m)
Size 60 80 100 125 150 170 200
“WC Hi 6.0 5.0 8.0 7.4 7.0 N/A
“WC Lo 3.4 2.9 3.5 4.2 3.1 N/A
40
3.6
2.0
Natural Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC Hi 4.2 3.9 4.9 4.5 4.4 4.0 3.5
CANADA
“WC Lo 2.4 2.3 2.1 2.7 2.2 2.4 2.2
40
3.4
1.9
LP Gas 0- 2000 ft (0-610m)
Size 60 80 100 125 150 170 200
“WC Hi 6.1 5.2 8.2 7.6 7.2 6.8 N/A
CANADA
“WC Lo 3.5 3.0 3.7 4.4 3.3 3.9 N/A
40
3.7
2.1
Natural Gas 2001- 4500 ft (611-1370m)
Size 60 80 100 125 150 170 200
“WC Hi 4.1 3.7 4.7 4.3 4.2 3.8 3.3
CANADA
“WC Lo 2.3 2.1 2.0 2.5 2.0 2.2 2.0
40
3.3
1.8
CANADA LP Gas 2001- 4500 ft (611-1370m)
Size 60 80 100 125 150 170 200
“WC Hi 6.0 5.0 8.0 7.4 7.0 N/A
“WC Lo 3.4 2.9 3.5 4.2 3.1 N/A
40
3.6
2.0

16
USA & CANADA Natural Gas 0- 2000 ft (0-610m)
MODEL 40 60 80 100 125 150 170 200
Burner Orifice Plate
Part No. 201063-57 201063-77 201063-67 201063-23 201063-26 201063-25 201063-24 201063-24
Fan Type 201957 202132
Fan Orifice
Part No. 202483 202479 L200301 L200281 L200262 201425 202133 201911
Injector
Part No. 201007-13 201007-15 201007-18 201007-19 201007-23 201007-29 201631-28 201631-32
Pressure Switch
Part No. 201508 201697201676
USA & CANADA LP Gas 0- 2000 ft (0-610m)
MODEL 40 60 80 100 125 150 170 200
Burner Orifice Plate
Part No. 201063-75 201063-74 201063-72 201063-56 201063-55 201063-54 201063-68
N/A
Fan Type 201957 202132
Fan Orifice
Part No. 202483 202253 L200301 201825 L200244 L200246 202141
Injector
Part No. 201007-10 201007-11 201007-13 201007-13 201007-15 201007-17 201007-19
Pressure Switch
Part No. 201508 201676
Technical Details continued

17
MODEL TUBE TYPE MATERIAL MIN DISTANCE
TO BEND
Stainless Steel Stainless Steel
60 TUBE 1 REMAINDER 10 (3.1)
80 TUBE 1 REMAINDER 15 (4.6)
100 TUBE 1 REMAINDER 15 (4.6)
125 TUBE 1 REMAINDER 15 (4.6)
150 TUBE 1 REMAINDER 20 (6.1)
170 TUBE 1 & 2 REMAINDER 25 (7.6)
200* TUBE 1 & 2 REMAINDER 25 (7.6)
40 TUBE 1 REMAINDER 10 (3.0)
Technical Details continued
MODEL U TUBE STRAIGHT TUBE
U20 U40 U60 S10 S20 S30 S40 S50 S60 S70
60 ●●●●●
80 ●●●
100 ●●●
125 ●●●●
150 ●●●●●
170 ●●●●
200* ●●●●
40 ●●●
Options * Not available on LP Gas
1 All standard units fitted with unvented vent, natural gas and stainless steel reflectors.
2 1 off 180° ‘U’ bend or up to 2 off 90° ‘L’ bends can be fitted at no less than 50% of the total heater length.
3 5ft tube kit, 4” (101mm) or 6” (152mm) vent terminal.
4 Combustion air kit or wind and rain hood kit for outdoor installation.
5 Reflector end caps.
6 Altitude conversion kit.
7 LP Gas and high altitude LP Gas conversion kits.

18
2. Assembly Instructions.
2.2.3 Brackets
There can be four types of brackets supplied
with these heaters:
2.2.3.1 Brackets for Indoor heaters
 Type ‘H’ are suspension brackets with tube
straps.
 Type ‘G’ are suspension brackets with no
tube straps.
2.2 Assembly Notes.
2.2.1 Tubes
Each heating unit has two types of emitter
tubes. For details of the tube types please refer
to the table (page 13 of this instruction
manual).
Identify and position tubes on saw horses. For
aesthetics it is advisable to position all tube
seams facing down. Position coupling
fastener so that these cannot be seen from
beneath the heater.
Mark out the position of the bracket centers
from the dimensions shown on the assembly
drawings.
Turbulators: Ensure that the correct
turbulator or burner insert is fitted, as this
could void your warranty if they are incorrectly
fitted or omitted.
2.2.2 Turbulators (where fitted)
Insert turbulator into correct
tube as indicated in the
assembly drawings.
PLEASE READ this section prior to
assembly to familiarize yourself with the
components and tools you require at the
various stages of assembly. Carefully open the
packaging and check the contents against the
parts and check list.
The manufacturer reserves the right to alter
specifications without prior notice.
Please ensure that all packaging is
disposed of in a safe environmentally
friendly way.
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.
Phillips
Screwdriver
Saw
Horses
Leather
Faced
Gloves
Tape
Measure

5/16”
Drive
Cordless
Drill
Wrench
Set
2.1 Tools Required.
The following tools and equipment are advisable
to complete the tasks laid out in this manual.
Suitable alternative tools may be used.
Please read these assembly notes in
conjunction with the correct assembly
drawings (figs 10 to 20).
"A"
VIEW ON "A"
3/16” (5mm)
5/32” (4mm)
Allen
wrench

19
Slide the coupler over the tube ensuring that the
screw stop has butted up to the tube ends.
Using the Allen wrench to tighten the bolts.
DO NOT OVERTIGHTEN.
Moving between the two bolts, tighten each one
in turn ensuring that equal pressure is applied to
both. Complete assembly by drilling and
screwing self tapping retention zip screws.
A standard stainless steel 4” coupling which is
used for all other fixings. Slide the coupler over
the tube ensuring that the rivet stop has butted
up to the tube ends. Using the 5/16” drive,
tighten the bolts.
DO NOT OVERTIGHTEN!!
 Type ‘F’ are fixed reflector brackets.
 Type ‘S’ are sliding reflector brackets.
Slip the suspension brackets onto the tube
assembly. The fixed suspension point ’H’
shown on the drawings are adjacent to the
burner and secures the first suspension bracket
to the tube with a tube strap. All other
suspension brackets ’G’ shown on the
drawings, have floating suspension points.
Reflectors are fixed at point ’F’ with a reflector
support bracket and reflectors are held in
position with fixing screws. Fixed and sliding
joints alternate along the heater at the
spacing's indicated on the individual heater
assembly sheets.
2.2.4 Couplers
The couplers are used for joining radiant tubes
and L bends.
There are two types of couplers for joining
radiant tubes and L bends. A high temperature
stainless steel 4” coupling which is used as
detailed in the table below.
2 x SCREWS TIGHTENED TO FIX REFLECTOR
LEAVE 1/8" MIN. GAP TO ALLOW REFLECTOR TO SLIDE
Locknut
Ensure security locknut is
tightened on both fixed
and sliding types of
bracket.
Model First coupler Second coupler
40-100 Standard Standard
125-150 Hi-temp Standard
170-200 Hi-temp Hi-temp
At this point raise the tube assembly into
position and suspend from previously
fixed chains (Working Load 100lb). Longer
tube assemblies may be raised in more than
one sub-assembly with final tube connection
made in the air.
STAINLESS
STEEL
SPACER
SELF TAPPING ZIP
SCREWS
DRAW BAND COUPLING
BOLTS
Self Tapping
Zip Screws
Draw Band Coupling
Bolts
Stainless
Steel
Spacer

20
2.2.7 Bend(s) (where fitted)
The heater can be installed with 1 or 2 90°
bends or a 180° U bend.
Slide the bend into the open end of the
coupler ensuring that the screw stop has butted
up to the tube ends. Refer to 2.2.4 for fastening.
Typical usage of optional bend kits:
2.2.5 Reflectors.
After removing the protective plastic coating (if
fitted), slip the reflectors through the hanger
brackets until they overlap each other.
The first and second reflector are fixed at the
point F by a type ‘F’ reflector support bracket
and are held in place by tightening the fixing
screws. Alternate fixings of further reflectors by
type S and type ‘F’ reflector brackets and space
as indicated by individual assembly sheets.
2.2.6 End Caps (optional)
Position an end cap beneath the reflector
profile (where required) with the end cap
flanges facing inwards.
Fasten to reflector using the four ’Z’ clips.
Note: For high wind/outdoor applications use
additional drill screws to secure end cap to
the reflector.
End Cap
Bends must be fitted at a distance of at
least 50% of the total heat exchanger
e.g. for a 60ft long heater, the closest to
the burner a bend can be is 30ft.
End Caps
16” crs
15”
U Bend
Corner reflectors (optional)
Corner reflectors kit (optional)
End Caps
Corner reflector kit optional 90° Elbow
All reflectors must be positioned/attached
to the brackets exactly as detailed in the
assembly drawings.
Reflector support bracket assemblies are fitted
at each reflector joint, with the clamp screws
adjusted so that reflectors are fixed together.
Each subsequent reflector must
OVERLAP the previous one as shown
below and to a distance as indicated by
their individual assembly sheets.
HFSF
Burner
Assembly
Reflectors
2/0 GA CHAIN
(TWISTED LINK, PLATED)
NOTE.
HOOKS ARE TO
BE CLOSED UP
AFTER ASSEMBLY
EYE HOOK