Schwank primoSchwank Operating instructions

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11A - BA
HIGHEFFICIENCYCOMBINED INTENSITY
Gas-FiredLuminous(HighIntensity)InfraredHeaters
INSTALLATION / OWNER’S MANUAL
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or death.
Read the installation and operating and maintenance instruc-
tions thoroughly before installing or servicing this equipment.
Not approved for use in any residential application.
SAFETY ALERT:
This heater must be installed and serviced only by a trained gas service techni-
cian. Failure to comply could result in personal injury, death, fire and/or property
damage.
Do not store or use gasoline or other flammable vapours and liquids in the
vicinity of this or any other gas fired appliance.
IF YOU SMELL GAS:
 Extinguish any open flame
 Do not attempt to light this or any other appliance
 Don’t touch any electrical switch, or telephone
 Immediately leave the area and call your gas supplier from a neighbor’s
phone
 Follow any and all instruction from your gas supplier
 If your gas supplier is not available, call the fire department
WARNING
FIELD CONVERTIBILITY:
This appliance is field con-
vertible to LP gas. Use kit
available from manufacturer.
See Page 14. Follow all
local and national codes.
INSTALLER: PRESENT THIS MANUAL
TO THE END USER.
Keep this manual in a secure place .
Record for future reference:
Model #:
Serial #:
(located on heater rating label)
primoSchwank & supraSchwank

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 2
NOTICE:
This manual is current for this product. Occasional revision of the product Certification Stan-
dard may require changes to the product and/or this manual.
This publication, or parts thereof, may not be reproduced in any form, without prior written
consent from The Manufacturer. Unauthorized use or distribution of this publication is strictly
prohibited.
Schwank Group
Schwank and InfraSave brands
5285 Bradco Boulevard
Mississauga, Ontario,L4W 2A6
PO Box 988, 2 Schwank Way
Waynesboro, Georgia 30830
Customer & Technical Services
Phone: [phone]
Fax: [phone]
e-mail: [email protected]
www.schwankgroup.com
www.infrasave.com

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IM091112
RD: NOV 2009
RL: 11A - BA
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primoSchwank
supraSchwank
HIGH EFFICIENCY COMBINED INTENSITY
GAS FIRED INFRA-RED HEATERS
TABLE OF CONTENTS
TOPIC .........PAGE
IMPORTANT INFORMATION - READ FIRST
APPLICATION ............................................. 4
HEATER EXPANSION................................. 5
GAS CONNECTION............................... 5, 14
VENTING................................................ 5, 13
‘SMOKE’ & DISCOLORATION ................... 5
CLEARANCE TO COMBUSTIBLES........... 6
Clearances Figure & Table ....................... 7
STACKING HEIGHT SIGN NEW.............. 8
1. GENERAL APPLICATION............................... 9
LABOR REQUIREMENTS ............................... 9
2. INSTALLATION IN AIRCRAFT HANGARS..... 9
3. INSTALLATION IN COMMERCIAL
GARAGES ....................................................... 9
4. INSTALLATIONS OTHER THAN
SPACE HEATING............................................ 9
5. PRE-INSTALLATION SURVEY..................... 10
6. MOUNTING CLEARANCES.......................... 11
SERVICE CLEARANCE ................................ 11
7. HEATER PLACEMENT GUIDELINES .......... 12
8. VENTILATION ............................................... 13
9. GAS SUPPLY & PIPING ............................. ..14
GAS CONVERSION..................................... 14
TOPIC ……...PAGE
10. ELECTRICAL & THERMOSTAT ..................... 15
11. INSTALLATION .............................................. 16
DIMENSIONS & CAPACITIES ........................ 17
12. LIGHTING INSTRUCTIONS ........................... 19
13. SHUT DOWN INSTRUCTIONS ...................... 19
14. DISCOLORATION OF HEATER BODY.......... 19
15. WIRING DIAGRAM - 24V THERMOSTAT...... 20
16. WIRING DIAGRAM - 120V THERMOSTAT.... 21
17. SERVICE GUIDE ............................................ 22
18. TROUBLESHOOTING GUIDE........................ 23
19. HIGH ALTITUDE INSTALLATION .................. 26
ORIFICE CHARTS.................................... 26
20. SEQUENCE OF OPERATION ........................ 27
21. SPARK IGNITION CIRCUIT............................ 27
22. START– UP / COMMISSIONING SHEET....... 28
23. OPTIONAL ACCESSORIES .......................... 30
24. PARTS LIST ................................................... 32
WARRANTY STATEMENT .............BACK PAGE
IMPORTANT Installer: Present this manual to the end user. Acquaint the
end user with Important Information: Cover & pages 4 to 8.
END USER: In particular you must be aware of ‘Clearances to Combustible’ re-
quirements and the limitations of stacking or placing material near the heaters.
Inform your safety personnel and staff of this information.

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 4
APPLICATION
A gas-fired luminous (high intensity) radiant heater may be installed for heating of commercial /
industrial non-residential spaces. It is beyond the scope of these instructions to consider all
conditions that may be encountered. Installation must conform with all local building codes or,
in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the
U.S.A. or the Natural Gas and Propane Installation Code, CSA B149.1 in Canada. The latest
edition Electrical Code ANSI/NFPA N0 70 in the U.S.A. and PART 1 CSA C22.1 in Canada
must also be observed.
Installation of a gas-fired radiant heater must conform to all heating installation design proce-
dures including clearance to combustibles, connection to the gas and electrical supplies, and
ventilation.
This heater is not for installation in a Class 1 or Class 2 explo-
sive environment, nor for any residential application. If installa-
tion of this equipment is in question, consult with local authori-
ties having jurisdiction (Fire Marshall, labor department, insurance underwriter, or others).
Revisions to codes and/or standards, may require revision to equipment and installation proce-
dures. In case of discrepancy, the latest codes, standards, and installation manual will take pri-
ority over prior releases.
IMPORTANT: DO NOT INSTALL THIS HEATER IN A STRUCTURE WITH NO INSULATION
IN THE ROOF—CONDENSATION WILL OCCUR.
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read and understand this installation and op-
eration manual thoroughly prior to assembly, installation, operation or service to
this appliance.
This heater must be installed and serviced only by a trained gas service techni-
cian.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity
of this or any other gas fired appliance.
Failure to comply could result in personal injury, death, fire and/or property dam-
age.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity
of this or any other gas fired appliance.
This appliance may have sharp edges and corners. Wear protective clothing such
as gloves and protective eye wear when servicing this or any other appliance.
WARNING
WARNING
IMPORTANT Installer: Present this manual to the end user. Acquaint the
end user with Important Information: Cover & pages 4 to 8.
END USER: In particular you must be aware of ‘Clearances to Combustible’ re-
quirements and the limitations of stacking or placing material near the heaters.
Make your safety personnel and staff aware of this information.

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IM091112
RD: NOV 2009
RL: 11A - BA
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Heater Expansion
It is a normal condition that during heat-up and cool-down a radiant
heater will expand and contract. Allowances for heater expansion
must be made in the gas connection and heater suspension. Im-
proper installation, alteration, or adjustment can result in property
damage, injury or death.
WARNING
Venting
Inadequate venting of a heater may result in asphyxiation, carbon
monoxide poisoning, injury or death. This heater is indirectly vented
from the space. Venting must be in accordance with all local, state,
provincial, and national codes (ANSI Z223.1/NFPA 54 in USA; B149.1 in Canada) and as indi-
cated in this manual. Refer to Sections 11 & 12
Gas Connection
Improper installation, connection, or adjustment can result in property
damage, toxic gases, asphyxiation, injury or death. Use an approved
stainless steel flexible gas connector (field supplied) to connect to the
gas supply to the heater in accordance with all local, state, provincial, and national codes
(ANSI Z223.1/NFPA 54 in USA; B149.1 in Canada) and as indicated in this manual.
WARNING
WARNING
WARNING ‘Smoke’ & Discoloration Condition
During start-up, the heating of material coatings used in the production process of the heater
may create a small amount of smoke during the initial period of operation. This condition is
normal and temporary .
Ensure that there is sufficient ventilation to adequately clear any ‘smoke’ from the space.
Notify site management and safety personnel to ensure that alarm systems are not unduly
activated.
Under certain conditions in some locations/environments, surface discoloration may occur on the
heater body where the products of combustion discharge from the heater. This discoloration is
due the deposit of ambient air borne particulate or gases that have passed through combus-
tion. The combustion of fuel gas in a clean environment will not cause any discoloration. The
discoloration does not affect the operation of the heater nor the manufacturer’s warranties.

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RD: NOV 2009
RL: 11B - BA 6
Clearance to Combustibles
Location of flammable or explosive objects, liquids or vapors close to the heater may cause fire
or explosion and result in property damage, injury or death. Do not use, store or locate flamma-
ble or explosive objects, liquids or vapors in proximity of the heater.
The clearance to combustible material represents the minimum dis-
tance that must be maintained between the outer heater surface and
a nearby surface. The stated clearance to combustibles represents a
surface temperature of 90F° (50C°) above room temperature.
It is the installer’s responsibility to ensure that building materials
with a low heat tolerance which may degrade at lower temperatures
are protected to prevent degradation. Examples of low heat toler-
ance materials include vinyl siding, fabrics, some plastics, filmy ma-
terials, etc.
In locations used for the storage of combustible materials, signs must be posted to specify the
maximum permissible stacking height to maintain the required clearances from the heater to
the combustibles. For your convenience, a sign is supplied with this heater - see page 8 for de-
tails. Such signs must either be posted adjacent to the heater thermostats or in the absence of
such thermostats in a conspicuous location.
In addition to stored or stationary material, consideration must also be given to moveable ob-
jects such as cranes, vehicles, and overhead doors, and structural objects such as electrical
and gas lines, electrical fixtures, and sprinkler heads.
Heaters must be located an appropriate distance from sprinkler heads. This distance may be
greater than the certified clearance to combustibles. Check the temperature rating of the sprin-
kler heads and locate heaters at a safe distance - in some instances the sprinkler heads may
need to be replaced by higher temperature heads.
It is beyond the scope of these instructions to consider all conditions that may be encountered.
Consult local authorities such as the Fire Marshall, insurance carrier, or safety authorities if you
are uncertain as to the safety or applicability of the proposed installation.
Refer to Figure 1 and Table 1 NEXT PAGE for the certified clearances to combustibles
for the appropriate model input/size.
WARNING

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11A - BA
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SUSPENDED AT AN ANGLE OF 30° *: Measured from outer surface of heater
SUSPENDED HORIZONTALLY: Measured from outer surface of heater
MOUNTING CLEARANCE TO COMBUSTIBLES
MODEL BELOW ‘C’
Inches [cm]
SIDES ‘S’
Inches [cm]
TOP ‘A’
Inches [cm]
ENDS ‘E’
Inches [cm]
primoSchwank 10
primoSchwank 15
primoSchwank 20
primoSchwank 30
90" [229]
96" [244]
100" [254]
105” [267]
30” [76]
30” [76]
36” [91]
42” [107]
18" [46]
18" [46]
18" [46]
18" [46]
48" [122]
48" [122]
48" [122]
48" [122]
supraSchwank 10
supraSchwank 15
supraSchwank 20
supraSchwank 30
90" [229]
96" [244]
100" [254]
105” [267]
30” [76]
30” [76]
33” [84]
36” [91]
16” [41]
16” [41]
16” [41]
16” [41]
48" [122]
48" [122]
48" [122]
48" [122]
FIGURE 1: MINIMUM DISTANCES TO COMBUSTIBLES - refer to Table 1 for values
NOTE: A ‘PEEL & STICK’ SIGN IS SUPPLIED: USE AN INDELIBLE MARKER TO
ENTER VALUES ‘H’, ‘S’, ‘F’, & ‘B’ ON .
POST THE SIGN ADJACENT TO THE HEATER THERMOSTAT OR IN A
PROMINENT LOCATION. See next page for details.
C
A
A
S S
SUSPENDED
HORIZONTALLY
C
A
A
F B
SUSPENDED
AT 30°
TABLE 1: MINIMUM CLEARANCE TO COMBUSTIBLES
MODEL BELOW ‘C’
Inches [cm]
FRONT ‘F’
Inches [cm]
BACK ‘B’
Inches [cm]
TOP ‘A’
Inches [cm]
ENDS ‘E’
Inches [cm]
primoSchwank 10
primoSchwank 15
primoSchwank 20
primoSchwank 30
67” [170]
66” [168]
70” [178]
74” [188]
67” [170]
66” [168]
70” [178]
74” [188]
8” [20]
8” [20]
8” [20]
8” [20]
24” [61]
24” [61]
24” [61]
24” [61]
48" [122]
48" [122]
48" [122]
48" [122]
supraSchwank 10
supraSchwank 15
supraSchwank 20
supraSchwank 30
66” [168]
66” [168]
69” [175]
72” [183]
66” [168]
66” [168]
69” [175]
72” [183]
8” [20]
8” [20]
8” [20]
8” [20]
24” [61]
24” [61]
24” [61]
24” [61]
48" [122]
48" [122]
48" [122]
48" [122]
NOTE: Suspended between horizontal and 30°: Use the largest clearance from each column
~ See additional notes on previous & next pages ~
T = Site distance
to floor Site distance to floor = T

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 8
In locations used for the storage of combustible materials signs
must be posted specifying the maximum permissible stacking height to
maintain the required clearances from the heater to the combustibles.
The signs must be posted either adjacent to the IR heating system thermostats or in the ab-
sence of such thermostats, in a conspicuous place.
For your convenience a “peel and stick” sign is provided with this heater.
Use a permanent marker to record the required dimensions on the sign.
To calculate the value ‘H’( Maximum Material Stacking Height):
Maximum Material Stacking Height: H= T(distance from heater to floor) minus C (the com-
bustibles clearance below the heater)
or H= T- C
 Measure the on-site distance between bottom
of the heater and the floor = ‘T’ inches (cm).
 Refer to Table 1 to get the value ‘C’ (clearance
to combustibles below heater) that corresponds
to the model you are installing
 Subtract the clearance below the heater ‘C’
from ‘T’ to get value ‘H’ (maximum material
stacking height).
 Enter this value ‘H’ on the sign with permanent
marker.
 Then, for the heater model/size being installed,
refer to the information in Figure 1 and Table 1
to get the values for dimensions ‘S’, ‘F’ and ‘B’
(Fand Bare for ‘angle mounted’ heaters only).
WARNING
Post this sign as instructed above.
The clearance to combustible materials represents the minimum distance that must be main-
tained between the heater and a nearby surface. The stated clearance to combustibles
represents a surface temperature of 90F° (50C°) above room temperature.
It is the installer’s responsibility to ensure that building materials with a low heat toler-
ance which may degrade at lower temperatures are protected to prevent degradation.
Examples of low heat tolerance materials include vinyl siding, fabrics, some plas-
tics, filmy materials, etc.

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RL: 11A - BA
9
1. GENERAL APPLICATION
A gas-fired radiant heater may be installed for heating of commercial / industrial non-residential
spaces. It is beyond the scope of these instructions to consider all conditions that may be en-
countered. Installation must conform with all local building codes or, in the absence of local
codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the U.S.A. or the Natural
Gas and Propane Installation Code, CSA B149.1 in Canada. The latest edition Electrical Code
ANSI/NFPA N0 70 in the U.S.A. and PART 1 CSA C22.1 in Canada must also be observed.
Installation of a gas-fired radiant heater must conform to all heating installation design proce-
dures including clearance to combustibles, connection to the gas and electrical supplies, and
ventilation.
This heater is not for installation in a Class 1 or Class 2 explosive environment, nor a resi-
dence. If installation of this equipment is in question, consult with local authorities having juris-
diction (Fire Marshall, labor department, insurance underwriter, or others).
Revisions to codes and/or standards, may require revision to equipment and installation proce-
dures. In case of discrepancy, the latest codes, standards, and installation manual will take pri-
ority over prior releases.
Models primoSchwank and supraSchwank may be installed for heating of commer-
cial / industrial non-residential indoor spaces.
IMPORTANT: DO NOT INSTALL THIS HEATER IN A STRUCTURE THAT HAS NO INSULA-
TION IN THE ROOF - CONDENSATION WILL OCCUR.
This heaters cannot be installed inside a degreasing plant, nor in an area where chlo-
rine, fluorine or bromine are present.
2. INSTALLATION IN COMMERCIAL AIRCRAFT HANGARS
Luminous (high intensity) radiant tube heaters are suitable for use in aircraft hangars when
installed in accordance with the latest edition of the Standard for Aircraft Hangars, ANSI/NFPA
No 409 in the USA, or the Canadian Natural Gas and Propane Installation Code, B149.1.
A. A minimum clearance of 10 ft (3 m) above either the highest fuel storage compartment or
the highest engine enclosure of the highest aircraft which may occupy the hangar. The
clearance to the bottom of the heater shall be measured from the upper surface of either
the fuel storage compartment or the engine enclosure, whichever is higher from the floor.
B. A minimum clearance of 8 ft (2.4 m) must be maintained from the bottom of the heater to
the floor in other sections of the aircraft hangar, such as offices and shops, which communi-
cate with areas for servicing or storage. Refer to Table 1 for proper mounting clearances to
combustibles.
C. Heaters must be located so as to be protected from damage by aircraft and other objects,
such as cranes and movable scaffolding.
D. Heaters must be located so as to be accessible for servicing and adjustment.
LABOR REQUIRMENTS
Two persons are required to safely install this equipment. Wear gloves and other required
safety protection.

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RL: 11B - BA 10
3. INSTALLATION IN COMMERCIAL GARAGES AND PARKING STRUCTURES
Luminous (high intensity) radiant heaters are suitable for use in commercial garages when in-
stalled in accordance with the latest edition of the Standard for Parking Structures, ANSI/NFPA
88A, or the Standard for Repair Garages, ANSI/NFPA No. 88B, or the Canadian Natural Gas
and Propane Installation Code, B149.1.
An overhead heater shall be located high enough to maintain the mini-
mum distance to combustibles, as shown on the heater rating plate, from
the heater to any vehicles parked below the heater.
Overhead heaters shall be installed at least 8 ft (2.4 m) above the floor.
4. INSTALLATIONS OTHER THAN SPACE HEATING
Use for process or other applications that are not space heating will void the C.S.A. certification
and product warranty. Process application requires field inspection and/or certification by local
authorities having jurisdiction. Process application design should be provided by local experi-
enced process design experts.
WARNING
5. PRE INSTALLATION SURVEY
It is recommended that a full heating design including heat loss calculation be conducted on
the structure or area to be heated. Heater sizing and placement must consider available
mounting height, sources of greatest heat loss, and obstructions on the site. The certified clear-
ances to combustibles with respect to stored material, moveable objects (cranes, vehicles, lifts,
overhead doors, etc), structural components, and sprinkler system heads. Consideration must
also be given to ventilation fan placement. Carefully survey the area to be heated, and for best
results place heaters in the coldest area(s) and at sufficient spacing to provide radiant heat
coverage.
Installation must conform with all local, state, provincial and national code requirements includ-
ing the current latest edition ANSI Z223.1 (NFPA 54) in the U.S.A. and B149.1 installation
code in Canada, for gas burning appliances and equipment. The latest edition Electrical Code
ANSI/NFPA N0 70 in the U.S.A. and PART 1 CSA C22.1 in Canada must also be observed.
The heating system must have gas piping of the correct diameter, length, and arrangement to
provide for the total system input. A layout drawing is necessary to calculate properly sized
gas supply piping.

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6. MOUNTING CLEARANCES
This heater must be mounted with at least the minimum clearances between the heater and
combustibles as shown in FIG-1, TABLE 1, Page 7. The clearances to combustible material
represent a surface temperature of 90 F° (50 C°) above ambient. It is the installer’s responsibil-
ity to ensure that building materials with a low heat tolerance which may degrade at lower tem-
peratures are protected to prevent degradation.
Positioning of lights, sprinkler heads, overhead doors, storage areas, gas and electrical lines,
parked vehicles, cranes and any other possible obstruction or hazard must be evaluated prior
to installation.
Ensure adequate clearance around the air intake at the burner to allow sufficient com-
bustion air supply to the heater.
6A. SERVICE CLEARANCE: To allow servicing of burner and controls, provide a minimum
clearance of 24 inches (61 cm) from the gas supply / ignition-controls of the heater to a wall or
obstruction . (see Figure 2 below) - the minimum clearances to combustibles must always be
maintained.
For guidelines to heater placement refer to TABLE 2 (next page).
FIGURE 2: SERVICE CLEARANCE
7. HEATER MOUNTING / PLACEMENT
The primoSchwank / supraSchwank Combined Intensity Heaters are approved for both hori-
zontal and angle mounting.
When angle mounting, the short axis may be rotated to a maximum of 30° with
the venturi always in the upper position. Improper angle mounting can result in
damage to the heater or unsafe operation.
For either horizontal or angle mounting, the long axis of the heater must be level. Use
only non-combustible mounting hardware.
See FIGURE 3 and TABLE 2 next page for ‘Typical Layout Mounting Distances’
IMPORTANT:

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SUSPENDED HORIZONTALLY TO 30°:
TABLE 2: SUGGESTED LAYOUT MOUNTING DISTANCES FOR COMFORT*
MODEL
primoSchwank or
supraSchwank
TYPICAL ABOVE
FLOOR
< X >
TYPICAL BETWEEN
HEATERS
< Y >
TYPICAL
BETWEEN ROWS
< Z >
10
15
20
30
15' (460 cm)
18' (550 cm)
20' (610 cm)
24' (730 cm)
25' (760 cm)
30' (915 cm)
35' (1070 cm)
45' (1370 cm)
30' (915 cm)
40' (1220 cm)
50' (1525 cm)
70' (2135 cm)
FIGURE 3: SUGGESTED SPACING FOR COMFORT
* The Mounting distances are suggested, and may vary depending on insulation val-
ues, air movement / change, and other site conditions. If in doubt, please contact
Schwank Technical Services.
For ‘spot’ heating, the distance above the floor can be reduced by 2 to 4 feet (61 to
132 cm) depending upon site conditions.
** IMPORTANT: When angle mounted the gas-inlet/venturi side of the heater
MUST BE IN THE UPPER POSITION.
Y
X
X
Z
X
Z
SUSPENDED AT AN ANGLE** 30° TO 45°:
MODEL
primoSchwank or
supraSchwank
TYPICAL ABOVE
FLOOR
< X >
TYPICAL BETWEEN
HEATERS
< Y >
TYPICAL
BETWEEN ROWS
< Z >
10
15
20
30
13' (400 cm)
16' (490 cm)
18' (550 cm)
21' (640 cm)
25' (760 cm)
30' (915 cm)
35' (1070 cm)
45' (1370 cm)
50' (1525 cm)
75' (2290 cm)
100' (3050 cm)
140' (4270 cm)
Venturi
in upper
position
Long axis always level
Short axis may
rotate up to 30°

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8. VENTILATION
Inadequate venting of a heater may result in asphyxiation, carbon monoxide
poisoning, injury or death. Heating system venting must be in accordance with
all local, state, provincial, and national codes (ANSI Z223.1/NFPA 54 in USA;
B149.1 in Canada).
This heater is approved for unvented (indirect venting) application. Ensure that there is ade-
quate ventilation to supply combustion air and to dilute the products of combustion in accor-
dance with all local, state, provincial, and national codes. A balanced exhaust / inlet air system
is required to ensure that a negative air condition is not created. See below for a summary of
exhaust capacity requirements by the national codes in the U.S.A. and Canada.
Air Supply: “Loose” buildings may not require any additional air supply if infiltration rates are
sufficient. However, for “tighter” buildings, or if air movement is stagnant in an area, air can
typically be supplied via inlet(s) with an area of 1 sq. in. per 1,000 Btuh input (22 sq cm per
kW). Locate air inlet(s) up at the level of the heaters to avoid cold drafts at work level, and ef-
fectively supply combustion and dilution air to the heaters and balance the system.
Heater Zoning: Exhausters are sized according to the input requirements of each controlled
zone of heaters. Multiple smaller zones are usually more effective in both comfort and ventila-
tion control than one large zone. Maximum zone size is limited by the total input that can be
handled by the capacity of an exhauster, and by the proximity of the exhauster to heaters in the
zone.
Exhauster Location & Proximity: Exhaust must be located as high as practicable in the
structure above the level of the heater(s) to effectively dilute and remove the warm (rising)
products of combustion. The exhauster should be as centrally located as practicable in the
zone of heaters. Schwank recommends a maximum 6:1 ratio of the horizontal distance be-
tween the exhauster and the furthest heater in a zone, to the height the heaters are mounted
above the floor . For example, if heaters are mounted 20 ft above the floor, then the exhaust
fan should be located no more than 120 ft from the furthest heater in the zone. Sufficient air
supply must be provided.
Exhauster Capacity:
USA: Natural or mechanical means shall be provided to supply and exhaust at least
4ft3/min/1000Btuh (0.38m3/min/kW) Natural Gas input of installed heaters [4.5ft3/
min/1000Btuh (0..43m3/min/kW) Propane input]. Some local codes may require an inter-
lock to a dedicated exhaust fan. Consult your local code and ANSI Z223.1 latest edition
for all venting requirements and practices.
Canada: It is required that the heater(s) be electrically interlocked to dedicated exhaust
fan(s) by means of an Air Proving Switch. Exhaust fan(s) must be sized to create 300
cfm (8.5 cu m/min) exhaust for every 100,000 Btuh (30 kW) or any fraction thereof of
total input of installed equipment. Provide combustion and ventilation air supply com-
patible with exhaust volume . Consult the latest edition of CSA.B149.1 Section 7.22.
WARNING

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 14
WARNING
9. GAS SUPPLY PIPING
A. Gas piping must be sized to provide adequate input capacity to all heaters and appliances
in the system and at the pressure indicated in Table 3 below.
IMPORTANT: Minimum supply line pressure at the inlet to the heater regu-
lator must not be lower than 6.0 inches of water column pressure for natu-
ral gas and 12” w.c. for propane. The supply gas pressure must be
checked with all heaters in operation.
B. Provide a 1/8 in (3.2 mm) NPT plugged tapping, accessible for test gauge connection, im-
mediately upstream of the gas supply connection to the heater.
C. It is recommended to install an approved flexible connector between the heater and gas
piping - available as option from Schwank or from your local supplier.
D. A drip-leg prior to the inlet connection to the heater must be provided in the gas line.
E. On propane-fired units, a main line filter is recommended.
F. Piping joint compounds must be resistant to the action of natural gas or LPG
G. TEST FOR LEAKS: Apply soap suds solution to all connections and joints and if bubbles
appear, leaks have been detected and must be corrected. DO NOT USE A MATCH OR
OPEN FLAME OF ANY KIND TO TEST FOR LEAKS. NEVER OPERATE THE HEATER
WITH LEAKING CONNECTIONS. Leak test according to local or national codes.
DO NOT use pressure greater than 1/2 psig to pressure check the heater.
The supply system should be checked first with heater turned “OFF” followed by another
check with heater turned “ON”.
Do not install any gas piping or wiring in the heat zone directly above the heater.
Do not subject heater controls to leak test pressures when checking the main supply piping.
WARNING Install and connect gas lines in accordance with lo-
cal, state, provincial and national codes (ANSI
Z223.1/NFPA 54 in USA; B149.1 in Canada).
Incorrect installation and connection of gas lines
may results in fire, explosion, property damage, in-
jury or death
GAS CONVERSION
This heater may be field converted from one fuel gas to another (natural gas or
LPG). Conversion must be accomplished with a kit available from the manufac-
turer . Contact your local distributor for the kit that is specific to the model in-
stalled. Conversion may include changing of the air restrictor as well as the ori-
fice and gas valve spring. Follow the instructions supplied with the conversion kit.
Gas conversion must only be done by a trained gas service technician, according
to all local and national codes. Incorrect conversion may result in fire, explosion,
property damage, injury or death

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11A - BA
15
GAS SUPPLY PRESSURE: The maximum supply pressure must be limited to 14 inches w.c.
(0.51 psi). If the line pressure is above 14 inches w.c. then a separate pressure reducing regu-
lator must be used - follow all codes. The minimum pressure at the inlet to the heater regulator
must be equal to or greater than 6.0 inches w.c. for NG and 12 inches w.c. for LP. A sealed
regulator is supplied with the heater which maintains the proper manifold pressure when the
main burner is operating under the following pressures:
LINE PRESSURE ( “ w.c.) MANIFOLD PRESSURE
inches w.c.
AT TAP IN GAS VALVE
MINIMUM MAXIMUM
NATURAL GAS 6.0 14.0 5.0
PROPANE GAS 11.0 14.0 10.0
TABLE 3
10 ELECTRICAL REQUIREMENTS AND THERMOSTAT CONTROL
All electrical installations must meet local codes and the latest edition Electrical Code PART 1
CSA C22.1 in Canada and ANSI/NFPA N0 70 in the U.S.A..
TRANSFORMER SPECIFICATIONS
Single heater requires 24 Volt, 60 Hz electrical transformer sized at 40 VA.
Multiple heaters in a zone are powered by a single transformer. The proper transformer is 24
Volt AC, 60 Hz, sized at 40 VA for the first heater plus 20VA for each additional heater in the
zone - round up the calculated value to the next higher available sized transformer. For exam-
ple, four heaters in a zone require a transformer of : 1 x 40VA + 3 x 20 VA = 100 VA . It is not
recommended to install more than 12 heaters per zone.
PROPER WIRING POLARITY MUST BE MAINTAINED, particularly when grouping the heaters
in a zone. Total wiring distances of up to 200' must use minimum 16 gauge electrical wire, and
wiring distances of over 200' must use minimum 14 gauge electrical wire. The heater must be
electrically grounded in accordance with local and national electrical codes. Malfunction of the
heating system will result if the voltage varies by more than +10% or -10%.
The heater can be controlled by a line voltage thermostat, a 24 volt thermostat or “off-on”
switch. Total load of all heaters must be considered in determining the required contact rating
of the controlling thermostat or switch.

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 16
11. INSTALLATION
A. Properly size and install ventilation as per Section 8, gas supply as outlined in Section 9,
previous page, and electrical supply as per Section 10 above.
B. Ensure adequate clearance around air openings into the combustion chamber
C. The ignition control assembly is shipped in the carton with the heater. Assemble the gas
valve / ignition control assembly to the heater at the gas-supply union.
D. Suspended infrared heaters shall be fixed in position independent of gas and electric supply
lines. Hangers and brackets shall be of non-combustible material. Heaters subject to vibra-
tion shall be provided with vibration-isolating hangers. Suspension hardware must be of
adequate capacity to support the weight of the heater - see Table 4 next page
E. Mounting at an angle of up to 30°: see Figure 6 page 17
 Rotate on the short axis only - long axis must always be horizontal
 The ‘front’ (gas-supply/venturi side) of the heater must be in the upper position when
angle mounted
 The ‘center of gravity’ of the heater allows angle mounting up to 30° using the sus-
pension tabs attached to the heater
E. Mounting at an angle greater than 30° up to 45°: see Figure 6 page 17
 Rotate on the short axis only - long axis must always be horizontal
 The ‘front’ (gas-supply/venturi side) of the heater must be in the upper position when
angle mounted
 The heater requires an Angle Mounting Bracket (JO-0331-XX - available as an op-
tional accessory) for angle mounting over 30° up to 45° - the Angle Mounting
Bracket bolts to the suspension tabs on the heater - see Figure 6 page 17
F. Mount heaters to structure by using non-combustible mounting hardware such as that illus-
trated in FIGURE 5 on page 17.
G. Observe the minimum clearances to combustibles as per the Clearance To Combustibles
section and Figure 1 and Table 1 pages 6, 7.
H. 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 combustible materials. SEE PAGE 8
I. Connect heater to the main gas line. It is recommended to use a 1/2" flexible connector
(available as option from Schwank) to absorb gas line expansion and any vibration from the
building. The flexible gas connector must be formed into a smooth ‘C’ shape.
J. Mount thermostat at desired location, away from direct infra-red rays of heater. If the ther-
mostat is located on a cold wall, place sufficient insulation behind the thermostat.
K. Test gas line for leaks by using gas pressure test and/or soap test and as per all local and
national codes. Ensure gas pressure meets the requirements outlined in Section 9.
When testing the main gas line pressure, ensure the gas shut-off valve is “OFF”, oth-
erwise damage to the combination gas valve can result.
L. Test fire the heating system by following the lighting instructions on the next page and on
heater.

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11A - BA
17
FIGURE 4: DIMENSIONS: primoSchwank & supraSchwank
TABLE 4: DIMENSIONS / WEIGHT / CAPACITY
primoSchwank
MODEL
CAPACITY
GAS
TYPE
INPUT
Btuh [kW]
IR OUTPUT
Btuh [kW]
primoSchwank 10
primoSchwank 15
primoSchwank 20
primoSchwank 30
NG
LPG
NG
LPG
NG
LPG
NG
LPG
37,500 [11]
34,100 [10]
56,000 [16]
51,000 [15]
75,000 [22]
68,500 [20]
113,000 [33]
103,000 [30]
24,600 [7.2]
22,370 [6.6]
35,400 [10.4]
32,230 [9.4]
49,050 [14.4]
44,800 [13.1]
76,500 [22.4]
69,730 [20.4]
‘A’
In.
[cm]
23.75"
[60.3]
34.50"
[87.6]
45.62"
[116]
67.32"
[171]
‘S’
In.
[cm]
21.7"
[55.1]
32.6"
[82.8]
43.5"
[110.5]
65"
[165]
WEIGHT
Lbs.
[kg]
23.5
[10.7]
33.6
[15.2]
40.3
[18.3]
54.9
[24.9]
supraSchwank
MODEL
CAPACITY
GAS
TYPE
INPUT
Btuh [kW]
IR OUTPUT
Btuh [kW]
supraSchwank 10
supraSchwank 15
supraSchwank 20
supraSchwank 30
NG
LPG
NG
LPG
NG
LPG
NG
LPG
29,500 [9]
27,000 [8]
44,000 [13]
40,500 [12]
59,000 [17]
54,500 [16]
88,500 [26]
81,500 [24]
22,800 [6.7]
20,850 [6.1]
34,630 [10.1]
31,870 [9.3]
46,730 [13.7]
43,160 [12.6]
71,700 [21.0]
66,100 [19.4]
‘A’
In.
[cm]
23.87"
[60.6]
34.60"
[87.9]
45.75"
[116]
67.5"
[171]
‘S’
In.
[cm]
21.7"
[55.1]
32.6"
[82.8]
43.5"
[110.5]
65"
[165]
WEIGHT
Lbs.
[kg]
37
[17]
53
[24]
62
[28]
82
[37]

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 18
FIGURE 5: TYPICAL SUSPENSION HARDWARE (supplied by others)
FIGURE 6: MOUNTING HEATER

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11A - BA
19
12. LIGHTING INSTRUCTIONS
A Open the isolation valve in the main gas line and turn gas control knob on the combination
gas valve to the “ON” position.
B Switch on electrical circuit by turning the thermostat to the highest temperature setting.
C The heater should attempt ignition and remain lit within thirty seconds. Note that the corre-
sponding exhaust fan is operating properly.
D If ignition does not occur, then cut off electrical power by turning the thermostat to off posi-
tion.
A. Turn off electrical circuit for temporary shutdown.
B. Turn off the electrical circuit, close gas stop-cock in gas supply line, and turn gas control knob to
the “OFF” position for complete shut-down.
Under certain conditions in some locations/environments, surface discoloration may occur on the
heater body where the products of combustion discharge from the heater. This discoloration is
due the deposit of ambient air borne particulate or gases that have passed through combus-
tion. The combustion of fuel gas in a clean environment will not cause any discoloration. The
discoloration does not affect the operation of the heater nor the manufacturer’s warranties.
13. SHUT DOWN INSTRUCTIONS
If heater back-fires during operation it must be turned off
immediately.
Indication of back-firing:
A. Loud ignition noise, then followed by dis-
tinct hissing sound.
B. Little or no visible burning on the ceramic
tile.
C. Combustion is taking place inside the
burner body.
Cause & remedy of back-firing:
A. Improper gas pressure entering the venturi
tube = test & remedy gas pressure.
B. Breakage of a ceramic tile and or gasket =
replace damaged part.
C. Faulty sealing of the ceramic tile to the
burner body, caused by breakdown of gas-
ket material = contact your Schwank dis-
tributor.
14. DISCOLORATION OF HEATER BODY
WARNING

supra/primo Manual
IM091112
RD: NOV 2009
RL: 11B - BA 20
15. ELECTRICAL WIRING DIAGRAM 24V CONTROL