Reznor VCT Unit Installation Manual

INSTALLATION / OPERATION / MAINTENANCE

Applies to: Model VCS/VCT 120V 60Hz

Gas-Fired, Tubular, Radiant,

Low-Intensity Infrared Heater

Model VCS/VCT (Harsh Environment )
On/Off & High/Low Burner/Control Box
with 20 - 80 ft Tube/Reflector Length

Part No. 270685

Introduction.

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

Document Index.

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

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.

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

1. Installation Requirements.

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

D. The unit shall be electrically grounded in

E. The heater may be installed in aircraft

2

and Propane Installation Code, CSA B149.1.

accordance with National Electric Code
ANSI/NFPA 70 and Canadian Electrical

Code CSA C22.1.

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

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

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.

G. Massachusetts Requirement: If the
heater is being installed in the Commonwealth
of Massachusetts, this unit must be installed by

a licensed plumber or licenced gas fitter.

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

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.)

be purpose made to sound engineering

practice or supplied by others.

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.

Figure 1. Recommended Methods of Heater Suspension.

Suitable Chain

Working Load Limit

100lb.

3

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)

1/2”

Outlet

Linear heater side view

U Tube heater side view

1/2”

U bend

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.

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

100

125

150

170

200

* distance with end caps fitted.

74 (188) 29 (74) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 14 (36) 10 (26)

74 (188) 32 (82) 41 (105) 6(16) / 3(8)* 8 (21) 22 (56) 8 (21) 16 (41) 10 (26)

74 (188) 39 (99) 47 (120) 6(16) / 3(8)* 8 (21) 22 (56) 20 (51) 18 (46) 10 (26)

74 (188) 39 (99) 48 (122) 6(16) / 3(8)* 8 (21) 22 (56) 20 (51) 18 (46) 10 (26)

86 (219) 48 (122) 48 (122) 6(16) / 3(8)* 11 (28) 22 (56) 20 (51) 20 (51) 10 (26)

86 (219) 48 (122) 48 (122) 6(16) / 3(8)* 11 (28) 22 (56) 20 (51) 20 (51) 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.

4

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

B1

A

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.

Outlet end.

Angled view.

C3

End

unvented

Above outlet

unvented

Return end on

U tube heater

WARNING!

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.

applicable

5

1.4 Gas Connection and Supply

WARNING: Before installation, check
that the local distribution conditions,

nature of gas and pressure, and adjustment

of the appliance are compatible.

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.

Figure 3. Correct orientation of Ball Valve

Gas Flow

Gas Flow

Figure 4. Correct Installation of Flexible

Gas Connection

* 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)

Table 3

HOSE SIZE USA CANADA

3/4” CE4

CONTACT

FACTORY

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.

6

F2

F1

R
C

W1

W2

24V AC

Terminals

(120V AC Fan

Terminals)

120V AC

Supply

24V AC 2-Stage

Thermostat (Ext.)

R C

W1 W2

Burner 1

E
N

L

N

E

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.

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

Figure 5a. External Wiring Schematic. (VCT)

1.5 Electrical Connections

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.

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.

BK

BK

G

W

BL

R
O

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.

VCS models can have an optional

24V AC single stage thermostat.
(See Fig. 5c overleaf)

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.

KEY:

BK-BLACK

BL-BLUE

R-RED

O-ORANGE

G-GREEN

W-WHITE

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.

7

Supply circuit

120V 60Hz 1 Ph

L2
L1 (HOT)

GND

T

110V Thermostat

other burners

Burner 1

F2

F1

R
C

W1

24V AC

Terminals

(120V AC Fan

Terminals)

120V AC

Supply

24V AC Single Stage

Thermostat (Ext.)

R C

W1

Burner 1

E
N

L

N

E

R
C

W1

Burner

Figure 5b. Single and Multiple Heater Installations 120V Control (VCS)

G

BK

T

W

BK

120V Thermostat

W

BK

KEY:
G-GREEN
W-WHITE
BK-BLACK

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.

G

Other burners

Link

Figure 5c. External Wiring Schematic (VCS)

BK

G

W

BK

BL

R

KEY:

BK-BLACK

BL-BLUE

R-RED

G-GREEN

W-WHITE

8

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.

L N

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

Y Y

W

G

BK

W

G

BL BR

PGR

P

GR

BR

W

BK

L NE

120V AC

Supply

BK

NE

120V AC Fan

Terminals

CW1R

24V Stat

Terminals

O

BL

BR

Burner On (amber)

CW1R

Optional

24V single

stage

Thermostat

R

W

G

BK

W

G

BK

O

BL

BR

G

F

E

Figure 6. Internal Burner Wiring Diagram. (VCS)

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

9

L N

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

Y Y

R

W

G

BK

W

G

BL BR

PGR

P

GR

K

BR

W

BK

L NE

120V AC

Supply

BK

F1NEF2

120V AC Fan

Terminals

High Fire

KGR

24V AC
RELAY

21

1424

11

A2

1222

A1

High Fire

Relay

COIL

NC

NO
COM

C

W2W1

R

24V AC Stat

Terminals

K

O

BL

BR

Low Fire

(amber)

C

W2W1

R

24V Two stage

Thermostat

R

W

G

BK

W

G

BK

BL

R

BK

R

K

O

BL

BR

E

Figure 7b. Internal Burner Wiring Diagram. (VCT)

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

10

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 fig 8a)

1.6.3 Horizontal venting

Individual units can be vented horizontally
through side walls. Recommended terminals
are part numbers 111848 for 4” and 111850 for

6”.

Distances from adjacent public walkways,
adjacent buildings, openable 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 gasses.

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

11

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

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

INLET WITH

6" (152mm)

SEAL JOINTS WITH

SILICONE OR DUCT TAPE

WALL

BIRD SCREEN

TERMINAL

36" (914mm) MIN CENTERS

CLAMPS

BURNER

4" (106mm) O.D. FLEXIBLE DUCT

ALUMINUM 4" (101mm) O.D. PIPE

MAX LENGTH = 25'-0" (7.62m) WITH 2-90° LONG RADIUS BENDS

Figure 8.a Vertical Venting.

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

APPROVED CAT III VENT PIPE

pipe, fittings and sealant are not
furnished by the manufacturer. Refer

fig 8c & 8d

CAT III ADAPTER

Figure 8.b Horizontal Venting.

Figure 8.c Fresh Air Ducted Intake. Figure 8.d Wall Terminal Intake Kit.

ELBOWS

4.25” (108mm) O.D FLEXIBLE DUCT

APPROVED CAT 3 VENT PIPE

ELBOWS

ENSURE ALL JOINTS ARE

SEALED

VENT CAT III ELBOW

NOTE: The vent
terminal should be
installed so as to be in
the same atmospheric
pressure zone as the
combustion air inlet of

the appliance

12

1.8 Technical Details - Table 5a (VCS)

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

MODEL

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

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
“WC

Natural Gas LP Gas

BTU/Hr BTU/Hr

N/A

60 80 100 125 150 170 200

4.2 3.5 3.5 4.1 4.2 3.4 3.5

Min. Heater

Length
S ft (m) S ft (m) U ft (m) U ft (m)

50 (15.2) 80 (24.4) 60 (18.3) 80 (24.4)

Max. Heater

Length

USA LP Gas 0- 2000 ft (0-610m)

Size
“WC

60 80 100 125 150 170 200

6.0 5.2 8.2 6.6 7.0 5.7 N/A

Min. Heater

Length

Max. Heater

Length

USA Natural Gas 2001- 4000 ft (611-1220m)

Size
“WC

CANADA Natural Gas 0- 2000 ft (0-610m)

Size
“WC

CANADA Natural Gas 2001- 4500 ft (611-1370m)

Size
“WC

60 80 100 125 150 170 200

4.0 3.3 3.3 3.9 4.0 3.2 3.3

60 80 100 125 150 170 200

4.2 3.5 3.5 4.1 4.2 3.4 3.5

60 80 100 125 150 170 200

4.0 3.3 3.3 3.9 4.0 3.2 3.3

USA LP Gas 2001- 4000 ft (611-1220m)

Size
“WC

CANADA LP Gas 0- 2000 ft (0-610m)

Size
“WC

CANADA LP Gas 2001- 4500 ft (611-1370m)

Size
“WC

13

60 80 100 125 150 170 200

5.8 5.0 8.0 6.4 6.8 N/A

60 80 100 125 150 170 200

6.0 5.2 8.2 6.6 7.0 5.7 N/A

60 80 100 125 150 170 200

5.8 5.0 8.0 6.4 6.8 N/A

N/A

N/A

Technical Details continued

USA & CANADA Natural Gas 0- 2000 ft (0-610m)

Size 60 80 100 125 150 170 200

Burner Orifice Plate

Part No.

Fan Type 270467 270464

Fan Orifice

Part No.

Injector

Part No.

Pressure Switch

Part No.

USA & CANADA LP Gas 0- 2000 ft (0-610m)

Size 60 80 100 125 150 170 200

Burner Orifice Plate

Part No.

Fan Type 270464 270467

Fan Orifice

Part No.

Injector

Part No.

Pressure Switch

Part No.

269954 269955 269943 269944 269945 269946 269946

269923 269922 269923 269927 269926 266930 269938

270400 270402 270404 270406 270408 270409 270410

270386 270387

269948 269949 269950 269951 269952 269953

269925 269925 269928 266931 269933 269937

270398 270399 270399 270400 270401 270403

270386

N/A

U Tube Straight Tube

MODEL

U20 U40 U60 U80 S20 S30 S40 S50 S60 S70 S80

60

80
100
125
150
170

200 ● ● ● ● ● ●

● ●

● ● ● ● ●

● ● ● ●

● ● ● ● ●

● ● ● ● ● ●

● ● ● ● ● ●

● ● ●

14

1.8 Technical Details - Table 5b (VCT)

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

Natural Gas LP Gas

Min. Heater

Length

Max. Heater

Length

Min. Heater

Length

Max. Heater

Length

MODEL

60

80
100
125
150
170
200

High / Low

Rate BTU/Hr

60,000/45,000 60,000/45,000

80,000/60,000 80,000/60,000
100,000/65,000 100,000/65,000
123,500/95,000 125,000/95,000

150,000/100,000 150,000/100,000
169,000/125,000 169,000/125,000
200,000/150,000

High / Low

Rate BTU/Hr

N/A

S ft (m) S ft (m) U (ft) U (ft)

20 (6.1) 40 (12.1) 20 (6.1) 40 (12.1)
30 (9.1) 40 (12.1) 40 (12.1) 40 (12.1)
30 (9.1) 40 (12.1) 40 (12.1) 40 (12.1)

30 (9.1) 50 (15.2) 40 (12.1) 40 (12.1)
40 (12.1) 60 (18.3) 40 (12.1) 60 (18.3)
50 (15.2) 70 (21.3) 60 (18.3) 60 (18.3)
50 (15.2) 70 (21.3) 60 (18.3) 60 (18.3)

Appliances can be installed up to 10,000 ft in the USA. Altitude conversion kits are available on request.

Size
“WC Hi
“WC Lo

Natural Gas 0- 2000 ft (0-610m) USA

60 80 100 125 150 170 200

4.2 3.9 4.9 4.5 4.4 4.0 3.5

2.4 2.3 2.1 2.7 2.2 2.4 2.2

Size
“WC Hi
“WC Lo

LP Gas 0- 2000 ft (0-610m) USA

60 80 100 125 150 170 200

6.1 5.2 8.2 7.6 7.2 6.8 N/A

3.5 3.0 3.7 4.4 3.3 3.9 N/A

Size
“WC Hi
“WC Lo

Size
“WC Hi
“WC Lo

Size
“WC Hi
“WC Lo

Natural Gas 2001- 4000 ft (611-1220m) USA

60 80 100 125 150 170 200

4.1 3.7 4.7 4.3 4.2 3.8 3.3

2.3 2.1 2.0 2.5 2.0 2.2 2.0

Natural Gas 0- 2000 ft (0-610m) CANADA

60 80 100 125 150 170 200

4.2 3.9 4.9 4.5 4.4 4.0 3.5

2.4 2.3 2.1 2.7 2.2 2.4 2.2

Natural Gas 2001- 4500 ft (611-1370m) CANADA

60 80 100 125 150 170 200

4.1 3.7 4.7 4.3 4.2 3.8 3.3

2.3 2.1 2.0 2.5 2.0 2.2 2.0

USA LP Gas 2001- 4000 ft (611-1220m)

Size
“WC Hi
“WC Lo

60 80 100 125 150 170 200

6.0 5.0 8.0 7.4 7.0 N/A

3.4 2.9 3.5 4.2 3.1 N/A

LP Gas 0- 2000 ft (0-610m) CANADA

Size
“WC Hi
“WC Lo

60 80 100 125 150 170 200

6.1 5.2 8.2 7.6 7.2 6.8 N/A

3.5 3.0 3.7 4.4 3.3 3.9 N/A

CANADA LP Gas 2001- 4500 ft (611-1370m)

Size
“WC Hi
“WC Lo

15

60 80 100 125 150 170 200

6.0 5.0 8.0 7.4 7.0 N/A

N/A

3.4 2.9 3.5 4.2 3.1 N/A