Schwank STS-JZ Operating instructions

STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C
INSTALLATION / OWNER’S MANUAL
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 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
Keep this manual in a secure place .
Record for future reference:
Model #:
Serial #:
(located on heater rating label)

STS-JZ
LOW INTENSITY TUBE TYPE
INFRA RED HEATERS
& 
IQ
LOW INTENSITY TUBE TYPE
INFRA RED HEATERS
Improper installation, adjustment, alteration, service or maintenance can
cause property damage, injury or death.
Read the installation and operating and maintenance instructions thoroughly
before installing or servicing this equipment.

THESE HEATER SERIES ARE APPROVED TO ANSI Z83.20-2016/CSA 2.34-2016

2
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C
NOTICE:
This manual is current for this product. Occasional revision of the product Certification Stand-
ard 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 and InfraSave
5285 Bradco Boulevard
Mississauga, Ontario,L4W 2A6
PO Box 988, 2 Schwank Way
Waynesboro, Georgia 30830

Phone: [phone]
Fax: [phone]
e-mail: [e-mail]



3
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C

 ........ 
IMPORTANT INFORMATION - READ FIRST
 ............................................. 4
........................... 5, 22
............................... 5, 23
 ................................................ 5, 15
‘’.................................... 5
....... 5
‘’.............................................. 6
 ........... 6
Clearances Figure & Table........................ 7
......................... 8
1. LABOR REQUIREMENTS............................... 9
2. INSTALLATION: AIRCRAFT HANGARS ........ 9
3. INSTALLATION: COMMERCIAL GARAGE ... 9
4. INSTALLATION: NOT SPACE HEATING ....... 9
5. PRE-INSTALLATION SURVEY…………….....10
6. MOUNTING CLEARANCES …………………..11
SERVICE CLEARANCE …………………...11
7. HEATER PLACEMENT GUIDELINES………...12
8. TURBULATOR LENGTH & LOCATION……….13
TURBULATOR ILLUSTRATION……………….14
9. FLUE VENTING ……………………………..15
MIN./MAX. SYSTEM LENGTHS .…………….16
HEATER EXPANSION & VENT CONFIG. ….17
COMMON VENTING ……………………….....17
VERTICAL VENTING CATEGORY I ………...18
HORIZONTAL VENTING CATEGORY III …..19
10. COMBUSTION AIR DUCT ……………………21
11. GAS SUPPLY / HEATER EXPANSION ...........22
FLEXIBLE GAS CONNECTION ...............23 - 24
12. ELECTRICAL AND THERMOSTAT ................ 25
13. HIGH ALTITUDE INSTALLATION ................... 25
14. LIGHTING INSTRUCTIONS ...........................25
15. RECOMMENDED MAINTENANCE............... ..25
……...
16. SUSPENDING THE SYSTEM - General ….. 26
17. SYSTEMS WITH 90° & 180° ELBOWS... 29-32
ELBOW KIT DIMENSIONS ...………..29, 58
18. BURNER & TUBE INSTALLATION............... 33
SPECIAL COUPLING -100,175 & 200 Mbh ..36, 37
19. REFLECTOR INSTALLATION ...................... 38
20. SEISMIC RESTRAINT .................................. 40
20-A. WIND RESTRAINT.................................... 40
21. WIRING DIAGRAM: FENWAL DSI................. 41
21-A. WIRING DIAGRAM MULTIPLE HEATERS
PER THERMOSTAT .................................... 42
22. SEQUENCE OF OPERATION: FENWAL DSI..... 43
SPARK IGNITER SET UP .............................. 45
23. TROUBLESHOOTING GUIDE: FENWAL DSI ..... 46
24. TROUBLESHOOTING GUIDE: HEATER ............ 47
25. START– UP / COMMISSIONING SHEET ...... 49
WARRANTY STATEMENT................... BACK PAGE

26. HEATER DIMENSIONS / WEIGHTS ………52
INSTALLATION DIMENSIONS ………. ..53
27. BURNER / TUBE KIT ASSEMBLY CHART.....54
28. HIGH ALTITUDE & ORIFICE CHART …..55 - 56
30. OPTIONAL ACCESSORIES ..................... 57 - 60
31. BURNER PARTS LIST ............................ 61 - 63
32. TUBE SYSTEM PARTS LIST .......................... 64
-



4
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C

A gas-fired radiant tube 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 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 Natu-
ral 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 ob-
served.
Installation of a gas fired tube heater must conform to all heating installation design procedures
including clearance to combustibles, connection to the gas and electrical supplies, and ventila-
tion.
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.
-andmay be installed for heating of commercial / industrial non-residential


Models SPW-JZ and IWP have a powder coated water resistant burner enclosure
and may be installed for heating of commercial / industrial non-residential outdoor
spaces and wet indoor environments.
Models STW-JZ and IW have a stainless steel water resistant burner enclosure and
may be installed for heating of commercial / industrial non-residential outdoor spac-
es and harsh wet indoor environments.
Improper installation, adjustment, alteration, service or mainte-
nance can cause property damage, injury or death. Read and
understand this installation and operation 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
California Proposition 65:
: This product can expose you to chemicals including carbon monoxide, which
is known to the State of California to cause birth defects or other reproductive harm. For more
information, go to www.P65Warnings.ca.gov

5
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C

It is a normal condition that during heat-up and cool-down a tube
heater will expand and contract. Allowances for heater expansion
must be made in the gas connection, venting and combustion air
ducting. Improper installation, alteration, or adjustment can result in
property damage, injury or death. 


Inadequate venting of a heater may result in asphyxiation, carbon
monoxide poisoning, injury or death. This heater may be directly or
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 indicated in this manual.

Improper installation, connection, or adjustment can result in property
damage, toxic gases, asphyxiation, injury or death. Using an ap-
proved flexible gas connector in the USA or Type 1 hose connector
in Canada, the gas supply to the heater must be connected and test-
ed 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. 

 -‘’ 
During start up, the heating of material coatings used in the production process of tubes and
reflectors will create 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 and safety personnel to ensure that alarm systems are not unduly activated.
 
Infrared radiant (IR) heating system provide comfort with the effect of radiant heat and ambient
air heat.
If your IR system is controlled with a thermostat (TruTemp or ThermoControl Plus) that senses
radiant heat, then set the thermostat to the desired comfort temperature (ie: 65°; 68°; 20°C).
If your IR system is controlled with a standard 24V or 120V thermostat that senses only air tem-
perature, then start with a thermostat setting that is 5° to 7°F (3° to 5°C) lower than the desired
comfort temperature. Some trial and error setting may be required to ‘fine tune’ the comfort tem-
perature that best suits your site and provides most economical operation.


6
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C

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.




’
         


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. 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 objects such as cranes, vehicles, and
overhead doors, and structural objects such as sprinkler heads, electrical and gas lines, and
electrical fixtures.
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.

.
WARNING
WARNING “”
It is a normal condition that the combustion tube (1st tube) can appear to “glow red”. For inputs
up to 150,000 Btuh, the top surface of the tube can appear red where heat is trapped between
the reflector and the tube. The stainless steel tube used for inputs 175,000 and greater can ap-
pear to entirely glow red. The tube material is designed into the heater because it can with-
stand the high temperature of combustion, and the “red glow” is a normal occurrence.

7
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C

-refer to Table 1 for values
*The clearance to combustible materials represents the minimum distance that must be main-
tained between the heater and a nearby surface. 
.
‘’ 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.






Suspended at an
angle up to 45°
Suspended
horizontally

FLOOR



Maximum Stack
Height
 = T- C
‘T’ is measured
on site, ‘C’ is in
Table 1
FLOOR

Maximum Stack
Height
 = T- C
‘T’ is measured
on site, ‘C’ is in
Table 1






inches (cm)

inches (cm)

inches (cm)

inches (cm)

inches (cm)

inches (cm)

inches (cm)
STS-JZ / IQ 200 (33)  (15.2) (188)  (178) (36) (112)  (193)
STS-JZ / IQ 175 (31)  (15.2) (183)  (172) (33) (107)  (188)
STS-JZ / IQ 155 (14)  (2.5) (163) (163) (9) (48) (178)
STS-JZ / IQ 130 (11)  (2.5) (152) (152) (9) (28) (165)
STS-JZ / IQ 110 (9)  (2.5) (137) (137) (5) (25) (137)
STS-JZ / IQ 100 (16.5)  (2.5) (145) (172) (15) (56) (172)
STS-JZ / IQ 80  (8)  (2.5) (59) (97) (5) (15) (97)
STS-JZ / IQ 60 (6)  (2.5) (43) (86) (4) (14) (86)
STS-JZ / IQ 45 (7)  (2.5) (61) (81) (6) (18) (81)

8
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C
VENT END CLEARANCE: Clearances from the vent pipe are determined by local or national
installation codes, but must not be less than 6 inches (15 cm).
For ‘unvented’ installation, a minimum distance of 48 inches (122 cm) is required from the end
of heater to a combustible surface.

 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.
“” 



To calculate the value ‘’: ( =  - )
• Measure the on site distance between bottom of
the heater and the floor = ‘’ inches (cm).
• Refer to Table 1 to get the value ‘’ that corre-
sponds to the model you are installing
• Subtract the clearance below the heater ‘’ from
‘’ to get value ‘’.
• Enter this value ‘’ on the sign.
Refer to the information for the heater model
being installed in Figure 1 and Table 1 to get
the values for dimensions ‘’, ‘’ and ‘’.
WARNING
Post this sign as instructed above.
 that in the above table the .
’




9
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C
 
Low intensity radiant tube heaters are suitable for use in aircraft hangars when installed in ac-
cordance 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.
 
Two persons are required to safely install this equipment. Wear gloves and other required safe-
ty protection.

Low Intensity Heaters are suitable for use in commercial garages when installed 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 Installa-
tion 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.
 
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.
WARNING

10
STS-JZ-F / IQ-F I&O Manual Z83.20-2016
IM101220
RD: APR 2019
RL: 20C
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read and understand this installation and
operation 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 technician.
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 damage.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity
of this or any other gas fired appliance.
 
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 the certified clearances to combustibles
with respect to stored material, moveable objects (cranes, vehicles, lifts, overhead doors, etc),
sprinkler system heads, and other obstructions on the site. Consideration must also be given to
vent / duct placement and the allowable combined lengths of vent and duct. Carefully survey
the area to be heated, and for best results place burner and combustion chamber in the coldest
area(s) .
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
function properly. For this reason, a layout drawing is necessary.