Schwank sportSchwank Series Installation instructions

sportSchwank Manual
IM080731
RD: APR 2019
RL: 01B
sportSchwank
HIGH EFFICIENCY INFRARED HEATER
INSTALLATION / OWNER’S MANUAL
INSTALLER: LEAVE THESE INSTRUCTIONS WITH THE CONSUMER
CONSUMER: RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
Keep this manual in a secure place .
Record for future reference:
Model #:
Serial #:
(information located on heater rating label)
DANGER
If you smell gas:
1. Shut off gas to the appliance.
2. Extinguish any open flame
3. If odor continues, keep away from the appliance and
immediately call your gas supplier or fire department.
WARNING:
Do not store or use gasoline or other flammable vapours
and liquids in the vicinity of this or any other gas fired
appliance.
An LP-cylinder not connected for use shall not be stored
in the vicinity of this or any other appliance.
WARNING: For Outdoor Use Only

sportSchwank Manual
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NOTICE:
The manufacturer reserves the right to make changes to equipment and specifications
without obligation or notification.
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
PO Box 988, 2 Schwank Way 5285 Bradco Boulevard
Waynesboro, Georgia, Mississauga, Ontario
USA 30830 L4W 2A6
Customer Service & Technical Support
Phone: [phone]
Fax: [phone]
email: [email protected]
www.schwankgroup.com
FIELD CONVERTIBILITY:
“The conversion shall be carried out in
accordance with the requirements of
the authorities having jurisdiction and
in accordance with the requirements
of the B149.1 (latest edition) installa-
tion code” in Canada, and ANSI
Z223.1 (latest edition) in the U.S.A.
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.

sportSchwank Manual
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TABLE OF CONTENTS
TOPIC ..............PAGE
1. GENERAL ........................................3
2. INSTALLATION REQUIREMENTS ..3
2.1 MOUNTING CLEARANCES.......3
2.2 HEATER MOUNTING.................4
2.3 SERVICE ACCESS ....................4
2.4 GAS SUPPLY INSTALLATION ..4
2.4 PRESSURE & LEAK TESTING..4
2.5 GAS PRESSURE NEEDS ..........5
3. INSTALLATION PROCEDURES......5
4. LIGHTING INSTRUCTIONS............6
5. SHUT DOWN INSTRUCTIONS........6
6. DIMENSIONS...................................8
7. MINIMUM CLEARANCES TO COM-
BUSTIBLES......................................9
8. ELECTRICAL REQUIREMENTS....10
sportSchwank
SERIES
HIGH EFFICIENCY INFRARED HEATER
FOR OUTDOOR SPACES
TOPIC .............. PAGE
9. SEQUENCE OF OPERATION-
FENWAL 35-60 DSI ....................... 10
10.WIRING DIAGRAM– FENWAL 35-60
DSI ................................................. 12
11.WIRING DIAGRAM - MULTIPLE
HEATERS PER ZONE................... 13
12.SPARK IGNITION CIRCUIT........... 14
13.HEATER FINISH ........................... 14
14.MAINTENANCE GUIDE................. 15
15.SERVICE ACCESS........................ 16
16.TROUBLESHOOTING GUIDE....... 17
17.COMMISSIONING REPORT ......... 19
18.REPLACEMENT PARTS LIST....... 21
19.LIMITED WARRANTY ................... 22
IMPORTANT WARNING INFORMATION: ……FRONT & INSIDE COVER, PAGE 1, 2
FIGURES / DRAWINGS PAGE
FIGURE 1 SERVICE ACCESS CLEARANCE ……………………………………….4
FIGURE 2 MOUNTING HARDWARE CONCEPTS …………………..……………..7
FIGURE 3 HEATER DIMENSIONS …………………………………………………...8
FIGURE 4 MINIMUM CLEARANCES TO COMBUSTIBLES………………………..9
FIGURE 5 SERVICE ACCESS - COTTER PIN REMOVAL ……………………….16
FIGURE 6 SERVICE ACCESS - END COVER REMOVAL ………………………..16
FIGURE 7 REPLACEMENT PARTS - EXPLODED VIEW …………………………21

sportSchwank Manual
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Installation and repair should be done by a qualified service per-
son. The heater should be inspected before use and at least annu-
ally by a qualified service person.
More frequent cleaning may be required as necessary. It is impera-
tive that control compartment, burners and circulating air passage-
ways of the heater be kept clean.
The heater must be installed and the gas supply connected and tested
in accordance with all local codes or, in the absence of local codes, with
the National Fuel Gas Code ANSI Z223.1/ NFPA 54 in the USA, or in
Canada the Natural Gas and Propane Installation Code, CSA B149.1, or
the Propane Storage and Handling Code, B149.2.
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the installation, operating and mainte-
nance instructions thoroughly before installing or servicing this equipment.
WARNING
Page 1
• Children and adults should be alerted to the hazards of high sur-
face temperatures and should stay away to avoid burns or clothing
ignition.
• Young children should be carefully supervised when they are in
the area of the heater.
• Clothing or other flammable materials should not be hung from the
heater, or placed on or near the heater.
• Any guard or other protective device removed for servicing the
heater must be replaced prior to operating the heater.
WARNING
Maintain adequate clearance around air openings into the combustion
chamber and clearances from combustible material. Provide for accessi-
bility and for combustion and ventilation air supply to the heater.
WARNING

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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 flammable or explosive objects, liq-
uids or vapors in proximity of the heater.
The structure, materials, or items in proximity to, or stored under the
heater will be subjected to radiant heat and could be seriously damaged.
The clearances to combustible material represent the minimum distances
that must be maintained between the outer heater surface and a nearby
surface so that a surface temperature of 90F°(50C°) above ambient is not
exceeded.
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.
It is beyond the scope of these instructions to consider all conditions that may be en-
countered. 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 for the certified clearances to combustibles that ap-
ply to the appropriate model input/size.
WARNING
Page 2
Clearance from combustibles
WARNING
The heater, when installed, must be electrically grounded in accordance
with local codes or, in the absence of local codes, with the National Elec-
trical Code, ANSI/NFPA 70 in the USA, or the Canadian Electrical Code,
CSA C22.1.

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1. GENERAL
These instructions are for the sportSchwank Series heater, a gas fired combined intensi-
ty infrared heater suitable for outdoor installation. This appliance shall be used only in a
well-ventilated space and shall not be used in a building, garage or any other enclosed
area.
This appliance may be installed with shelter no more inclusive than:
(a) With walls on all sides, but with no overhead cover
(b) Within a partial enclosure which includes an overhead cover and no more than two
side walls. These side walls may be parallel, as in a breezeway, or at right angle to
each other.
(c) Within a partial enclosure which includes an overhead cover and three side walls, as
long as 30 percent or more of the horizontal periphery of the enclosure is perma-
nently open.
Installation must conform to all local codes or, in the absence of local codes to:
• U.S.A.: National Fuel Gas code ANSI Z223.1 / NFPA 54, and the National Electrical
Code ANSI/NFPA No 70 (latest editions)
• Canada: The Natural Gas and Propane Installation Code CSA B149.1 and the Cana-
dian Electrical Code CSA C22.1 (latest editions).
• Periodic changes to standards and requirements, may make revision to equipment
and installation procedures necessary. In case of discrepancy, the latest installation
manual will take priority.
This heater is designed and certified for use outdoors in accordance with Stand-
ards ANSI Z83.26-2007 / CSA 2.37-2007.
Schwank Group warrants that the heater will operate as designed in wind condi-
tions up to 10 MPH. Note this unit is not designed to operate in adverse weather
conditions including higher wind speeds exceeding the certification requirement
of 10 MPH.
2. INSTALLATION REQUIREMENTS
2.1 MOUNTING CLEARANCES
sportSchwank Series heaters must be mounted with minimum clearances as shown in
Section 8.4. The heater should also be located with respect to building con-
struction and equipment so as to provide sufficient clearance and accessibil-
ity for servicing and cleaning of burners and ignition control. Minimum mount-
ing height is to be no less than 96”. Do not store or place anything directly un-
derneath heater.
2.2 HEATER MOUNTING
The sportSchwank Series heater is approved for both horizontal and angle mounting.
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When angle mounting, the short axis may be rotated to a maximum of 30°. Refer to
FIGURE 3. Improper angle mounting can result in damage to the heater and unsafe or
uncertain operation, and will void warranty.
IMPORTANT: For either horizontal or angle mounting, the long axis of the heater must
be level. Use only non-combustible mounting hardware. FIGURE 2 on Page 5 illus-
trates typical suspension hardware that may be used.
Maintain adequate clearance around air openings into the combustion chamber, clear-
ances from combustible material, provision for accessibility, and for combustion and
ventilating air supply.
2.3 SERVICE ACCESS CLEARANCE
FIGURE 1
Refer to Section 16 for complete Service Access instruction
2.3 GAS SUPPLY LINE INSTALLATION
• All piping must be installed according to local codes or, in the absence of local
codes, with the National Fuel Gas Code ANSI Z223.1/ NFPA 54 in the USA, or in
Canada the Natural Gas and Propane Installation Code, CSA B149.1, or the Pro-
pane Storage and Handling Code, B149.2..
• A drip-pocket at the inlet connection must be provided.
• Piping joint compounds must be resistant to the action of liquefied petroleum gases.
• Ensure gas pipe is sized to meet the capacity requirements of all heaters in the sys-
tem, and the supply pressure requirements outlined in Section 2.5 below.
• DO NOT INSTALL ANY GAS PIPING IN HEAT ZONES
2.4 PRESSURE AND GAS LEAK TESTING
Test the gas supply piping system for leaks:
• Test piping joints for leaks with a soap and water solution
• Test piping system for leaks using gas meter / pressure gage test.
CAUTION:
• DO NOT USE AN OPEN FLAME TO TEST FOR GAS LEAKS
• The appliance and its individual shutoff valve must be disconnected from
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the gas supply piping system during any pressure testing of that system
at test pressures in excess of 1/2 psig [3.5 kPa] .
• The appliance must be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure testing of
the gas supply piping system at test pressures equal to or less than 1/2
psig [3.5 KpA].
2.5 GAS PRESSURE REQUIREMENTS
The sportSchwank Series heater is to utilize natural gas only.
The maximum supply pressure must be limited to 14" w.c. (0.5 psi) [35 mb]. If the sup-
ply line pressure is above 14" w.c. [35 mb], then a separate pressure reducing regula-
tor must be installed. The minimum pressure at the inlet to the heater must be equal
to or greater than 6.0" w.c. [15 mb] for natural gas.
The sportSchwank 30 model is equipped with a safety control system (low gas pres-
sure cut-off switch) designed to shut the burner off in the event of inadequate gas pres-
sure (4.5” w.c. [11.3 mb] minimum gas supply line pressure required).
The burner requires the following gas supply conditions to operate:
Natural Gas: Orifice sized for heat content 1000 Btu/cu ft [37.5 Mj/cu m].
3. INSTALLATION PROCEDURES
1. Install gas line as outlined in Section 2.
2. MOUNTING HARDWARE: The heater manufacturer cannot anticipate all structural
conditions and other wind and weather conditions in which the heater will be mount-
ed or attached:
• Mount heaters using non-combustible mounting hardware
• Ensure the mounting hardware/brackets and anchoring to the structure is of suf-
ficient engineering design, strength, quality and workmanship, to support the
weight of the heater and any other loads such as snow accumulation
• Provide bracing as required to prevent undue movement of the heater
• Seismic bracing, if required, must conform to local codes and engineering prac-
tices
• Use Table 2 and Figure 2 to determine the heater dimensions and weight re-
quirements for the design of mounting hardware / brackets
Page 5
TABLE 1 LINE PRESSURE MANIFOLD PRESSURE
MINIMUM ” w.c. [mb] MAXIMUM ” w.c. [mb] ” w.c. [mb]
NATURAL GAS 6.0 [15] 14.0 [35] 5.0 [12.5]

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3. The sportSchwank Series heater is approved for both horizontal and angle mount-
ing. When angle mounting, the short axis may be rotated to a maximum of 30°.
For either horizontal or angle mounting on the short axis, the long axis of the heater
must be in a horizontal position.
4. Maintain the minimum clearances to combustibles as indicated in Section 7.
5. Connect heater to the main gas line. When possible, use an approved 1/2" flexible
connector (available as an option from the manufacturer or your local supplier) to
absorb gas line expansion and any vibration - check local code requirements.
6. Leak and pressure test all gas supply lines
7. Set up gas supply pressures at heater to ensure proper manifold pressure (see
Section 2.5 and TABLE 1)
8. Ensure proper electrical rating in the system by checking voltage at ignition module
terminals. (refer to Section 9) To avoid system malfunction, the voltage range must
be within 21.6 Volts to 26.4 Volts, and correct polarity must be maintained through-
out the system.
9. Test-fire the heating system by following the lighting instructions as shown below
and on heater.
4. LIGHTING INSTRUCTIONS
1. Ensure the correct voltage is supplied and gas valve is in the ON position.
2. Turn on power to heater, set thermostat (if applicable) to desired setting, the heat-
er will light.
3. If heater does not light: Turn off power to heater, turn gas valve to OFF position.
4. Wait for five minutes and repeat steps above. If heater does not light after three
attempts, call a qualified service technician.
5. SHUT DOWN INSTRUCTIONS
1. For temporary shutdown, turn off the electrical supply.
2. For complete shutdown, turn off the electrical supply and turn gas control knob to
the "OFF" position.
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30°
30°
30°

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6. DIMENSIONS & CONFIGURATION sportSchwank SERIES
TABLE 2
FIGURE 3: DIMENSIONS
To ‘size’ the transformer required to oper-
ate multiple heaters in one control zone:
• First heater in zone requires 40 VA
• Each additional heater: plus 20 VA
• The sum total will be the required
transformer rating
• If total VA exceeds one available
transformer rate (in between sizes) se-
lect the next higher VA rating
Refer to Section 9 - Electrical Require-
ments
sportSchwank
Dimensions Capacity Weight
Elect.*
L
In [cm]
S
In [cm] Btuh [kW] Lbs [kg]
10 35" [89] 21.7" [55.1] 33,500 [10] 50 [23]
24 VAC
60 Hz
0.55 A
15 50" [127] 32.6" [82.8] 50,000 [15] 71 [32]
20 57" [145] 43.5 [110.5] 67,000 [20] 94 [43]
30 78.7" [200] 65" [165.1] 103,000 [30] 132 [60]
Heater may rotate up to 30° in this direc-
tion. ‘Front’ side must always be located
uppermost when angle mounted. Gas
supply is on the right end when viewed
from front.
END VIEW ALL MODELS
Gas and
electrical
supply this
end.
1/2” MPT

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Page 9
TABLE 3: MINIMUM CLEARANCES TO COMBUSTIBLE
7. MINIMUM CLEARANCES TO COMBUSTIBLES
The structure, materials, or items in proximity to, or stored under the
heater will be subjected to radiant heat and could be seriously damaged.
The clearances to combustible material represent the minimum distanc-
es that must be maintained between the outer heater surface and a
nearby surface so that a surface temperature of 90F°(50C°) above ambi-
ent is not exceeded.
It is the installer’s responsibility to ensure that building materials with a
low heat tolerance which may degrade at lower temperatures are pro-
tected to prevent degradation.
sportSchwank
Angle Mounted 1° to 30° Horizontal
ABOVE
A
In. [cm]
REAR
R
In. [cm]
BELOW
B
In. [cm]
FRONT
F
In. [cm]
TOP
T
In. [cm]
SIDES
S
In. [cm]
UNDER
U
In. [cm]
10 24" [61] 8" [20] 66" [91] 66" [170] 18" [46] 30" [76] 90" [229]
15 24" [61] 8" [20] 66" [91] 66" [168] 18" [46] 30" [76] 96" [244]
20 24" [61] 8" [20] 70" [91] 70" [178] 18" [46] 36" [91] 100" [254]
30 24" [61] 8" [20] 74" [91] 74" [188] 18" [46] 42" [107] 105" [267]
FIGURE 4: MINIMUM CLEARANCES TO COMBUSTIBLE
R
A
F
B
T
S
U
S
HorizontalAngle Mounted
1° to 30°

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8. ELECTRICAL REQUIREMENTS
The heater, when installed, must be electrically grounded in accordance with local
codes, or in the absence of local codes, with the National Electrical Code ANSI/NFPA
70, or the Canadian Electrical Code, CSA C22.1.
Single heater requires a 24 Volt, 60 Hz electrical transformer sized at 40 VA. When
multiple heaters are controlled in a single zone, a 24 Volt 60 Hz transformer sized at 40
VA for the first heater, plus 20 VA for each additional heater in the zone. If the total VA
requirement exceeds a standard available transformer rating (in between sizes) select
the next higher available transformer VA rating.
For example, five heaters controlled together (wired in parallel), require a 150 VA
transformer (40 + 20 + 20 + 20 +20 = 120 -> go to available size = 150 VA).
PROPER WIRING POLARITY MUST BE MAINTAINED, particularly when grouping the
heaters in a zone.
Ensure that wire gauge is properly sized to suit distances between control and heaters.
Malfunction of the heating system will result if the voltage varies by more than +10% or
-10%.
9. SEQUENCE OF OPERATION FOR FENWAL 35-60 DSI CONTROL
WARNING: The Series 35-60 uses voltages
of shock hazard potential. Wiring and initial
operation must be done by a qualified ser-
vice technician.
Start up - Heat Mode
On a call for heat the Fenwal 35-60 control will reset, per-
form a self check routine, flash the diagnostic LED for up to
four seconds. The gas valve and spark are energized com-
mencing the 21 second trial for ignition period.
When flame is detected during the trial for ignition, spark is
shutoff immediately and the gas valve remains energized. The thermostat and main
burner flame are constantly monitored to assure the system continues to operate
properly. When the thermostat is satisfied and the demand for heat ends, the gas valve
is de-energized.
Flame Failure - Multi Trial Model:
Should the main burner fail to light, or the flame is not detected during the first trial for
ignition period, the gas valve is de-energized and the control goes through an inter-
purge delay before another ignition attempt. The control will attempt two additional igni-
tion trials before going into lockout and the valve relay is de-energized.
Recovery from lockout requires a manual reset by either resetting the thermostat or
removing 24 volts for a period of 5 seconds. If the thermostat is still calling for heat af-
ter one hour the control will automatically reset and attempt to ignite the burner again.
Flame Failure - Re-Ignition:

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If the established flame signal is lost while the burner is operating, the control will re-
spond within 0.8 seconds. The HV spark will be energized for a trial ignition period in
an attempt to relight the burner.
If the burner does not light the control will make two more attempts to relight the burner
before de-energizing the gas valve. If the burner does not relight, the control will go in-
to lockout as noted above in “Failure to light”. If flame is re-established, normal opera-
tion resumes. Multi-try models will allow three tries for ignition including interpurges.
Cautions:
1. Ceramic insulators should not be in or close to the flame.
2. Electrode assemblies should not be adjusted or disassembled. Elec-
trodes should have a gap spacing of 1/8”- 3/16” (3.12± 0.81 mm). If this
spacing is not correct, the assembly must be replaced. Electrodes are pre-
set and NOT field adjustable.
3. Exceeding the temperature limits can cause nuisance lockouts and premature elec-
trode failure.
Flame current is the current which passes through the flame from the sensor to
ground. The minimum flame current nec-
essary to keep the Fenwal 35-60 system
from lockout is 0.7 µA (microamps). To
measure the flame current, connect ana-
log DC microammeter to the FC-FC+ ter-
minals.
Meter should read 0.7 µA or higher. If the
meter reads below “0” on scale, meter
leads are reversed. Disconnect power
and reconnect meter leads for proper po-
larity.
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Fenwal Control Terminal Designation
TH/W Thermostat Input
GND System Ground
V1 Valve Power
V2 Valve Ground
NC Alarm
S1 Remote Flame Sensor
Fault Conditions:
The LED will flash on for 1/4 second,
then off for 1/4 second during a fault
condition. The pause between fault
codes is 3 seconds.
Error Mode LED Indication
Internal Control Failure Steady on
Flame with No Call for
heat
2 flashes
Ignition Lockout 3 flashes
10. WIRING DIAGRAM - Fenwal 35-60 DSI Control
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11.WIRING DIAGRAM - Fenwal 35-60 DSI Control
- 24 VOLT SWITCHING
Page 13
Fault Conditions:
The LED will flash on for 1/4 second, then off for 1/4 second during a fault condi-
tion. The pause between fault codes is 3 seconds.
Error Mode LED Indication
Internal Control Failure Steady on
Flame with No Call for
heat
2 flashes
Ignition Lockout 3 flashes

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12. SPARK IGNITION CIRCUIT
The step-up transformer in the ignition control provides spark ignition at 30,000 volts
(open circuit). To check the spark ignition circuit, proceed as follows.
1Shut off gas supply to the gas control
2Disconnect the ignition cable at the ignition control stud terminal to isolate the
circuit from the spark igniter or igniter/sensor
3Prepare a short jumper lead, using heavily insulated wire such as ignition cable
CAUTION
In the next step, DO NOT allow fingers to touch either the
stripped end of the jumper or the stud terminal. This is a very high
voltage circuit and electrical shock, personal injury or death can
result.
1Perform this test immediately upon energizing the system before the ignition control
goes into safety lockout and interrupts the spark circuit. Touch one end of the
jumper firmly to the ignition control GND terminal. (DO NOT remove the existing
ground lead.) Slowly move the other end of the jumper wire toward the stud
terminal on the ignition control to establish a spark.
2Pull the wire away from the stud and note the length of gap at which spark stops.
3A spark length of 1/8 in. (3mm) or more indicates satisfactory voltage output. If no
arc can be established, or the maximum spark is less than 1/8 in. (3mm), and
power to the ignition control input terminals was proved, replace the ignition
control.
13. HEATER FINISH
The sportSchwank is available with the exterior weather enclosure options:
• constructed of stainless steel
• or constructed of aluminized steel with a black coating
With extended use, exterior heater surfaces may discolor to some extent due to the
impact of heat and the deposit of air born particles that have gone through combustion.
In some environments, the stainless steel lens cover may experience some surface
oxidization and discoloration. These are normal occurrences and in no way affect the
operation of the heater or the manufacturer’s warranty.
OCCASIONAL FINISH MAINTENANCE:
Wear protective gloves, eyewear, and breathing mask when performing finish mainte-
nance. Ensure that power to the heater is disconnected prior to maintenance and the
application of any finish coating. Use a fine steel wool to remove blemishes or unsight-
ly deposit, and smooth the outer surface. The black heater finish coat can be touched
up using a high temperature coating that is compatible with the original finish, such as
Thurmalox Stove Paint-Flat Black-1200°F (650°C) or equivalent. No other coating
type or non-high-temperature paint finish may be applied to the heater – use of
an incompatible finish coating could create a hazardous condition such as fire
or noxious fumes, damage the heater, and void the warranty.
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14. MAINTENANCE GUIDE
• Keep the appliance area clear and free from combustible materials, gasoline and
other flammable vapors and liquids.
• The flow of combustion and ventilation air to the heater must not be obstructed
• Annual servicing and cleaning of the heater by a qualified service technician is es-
sential for continued efficient operation.
• Periodically visually inspect the tile burner for proper operation:
• Proper combustion will cause the tile burner surface to appear a bright lumi-
nous orange
• If a “dark spot” appears on the tile burner surface, dust or other contaminant
has accumulated In the tile perforations and cleaning is required (see below)
• Servicing and cleaning of the heater must be performed by a qualified gas
service technician
• An annual inspection and servicing should be carried out by qualified gas service
technician as follows:
• Clean the ceramic tile with compressed air. Avoid directing air stream at
gasket material between tile and heater body. The air pressure must be
lower than 20 psi [140 kPa].
• Clean the venturi tube with compressed air. The air pressure must be low-
er than 20 psig [140 kPa].
• Visually inspect the burner tiles for proper combustion - clean tiles as above
if required
• If a crack is visible in any tile, the tile must be replaced
• Indication of back firing:
WARNING: If heater backfires during operation, it must be turned off immediately.
Contact a qualified gas service technician for heater repair before putting the
heater back into operation.
• Loud ignition noise, followed by distinct hissing sound.
• Little or no visible burning on the ceramic tile surface.
• Combustion is taking place inside the burner body.
• Cause & remedy of back firing: Service repair required by qualified gas ser-
vice technician
• Improper gas pressure entering the venturi tube: Check gas pressure - Refer
to Table 1 Page 4.
• Broken/cracked ceramic tile and/or gasket: Replace damaged component.
Page 15
WARNING: Improper 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. Service to the heater must be performed
by a qualified gas service technician.

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Page 16
• Faulty sealing of the ceramic tile to the burner body, caused by breakdown of
gasket material: Replace gasket and re-seat tile.
• Refer to Section 13. Troubleshooting Guide for further servicing information
• Schwank Technical Service is available during regular business hours (Eastern
Time Zone) to qualified gas service technicians at 1-877-446-3727
• Have available the information required in the Commissioning Report (pages
18 & 19)
15. SERVICE ACCESS
For access to the burner and controls to perform setup, maintenance, and service pro-
cedures, remove only the cotter pins at the front of the heater (2 to 4 pins). The weather
screen will rotate down, out of the way for service, cleaning and other maintenance.
FIGURE 5 - COTTER PIN REMOVAL FOR SETUP & SERVICE ACCESS
FIGURE 6 - END COVER REMOVAL FOR
SERVICE ACCESS
Gas valve
replacement
FIRST - Remove lower screened panel by remov-
ing 3 end screws, plus bottom screw.
Then remove upper end panel - extract 3 screws

sportSchwank Manual
IM080731
RD: APR 2019
RL: 01B
16. TROUBLESHOOTING GUIDE
TURN HEATER ON :
24 VOLTS INTO DSI CONTROL
24 VOLTS OUT FROM DSI CONTROL
24 VOLTS AT GAS CONTROL
SPARK ACROSS IGNITER.
IS HIGH VOLTAGE SPARK
OK ?
ENSURE THE MANUAL KNOB
ON THE VALVE IS OPEN AND
THAT THERE IS GAS SUP-
PLY TO THE VALVE.
*CHECK 120 V AT PRIMARY TRANSFORMER
*CHECK VOLTAGE OUT AT SECONDARY.
*IF THERE IS NOT 24V TO SECONDARY....
.......REPLACE THE TRANSFORMER
*ENSURE GAS IS TURNED ON AT
VALVE.*CHECK ELECTRICAL CONNECTIONS
AT
CONTROL & GAS VALVE.
*CHECK 24V WIRING CONTINUITY FROM DSI
IGNITION CONTROL TO GAS VALVE, RE
*PERFORM IGNITION LEAD TEST DESCRIBED
IN “SPARK IGNITION CIRCUIT”.
*CHECK DSI MODULE IGNITION POST FOR
DEFECTS.
*SPARK IGNITER MAY BE OUT OF POSITION.
*CHECK BOOT OF THE IGNITION CABLE FOR
SIGNS OF MELTING OR BUCKLING. TAKE
PROTECTIVE ACTION TO SHIELD CABLE &
BOOT FROM EXCESSIVE TEMPERATURES.
*CHECK CERAMIC INSULATOR FOR CRACKS *
*CHECK SPARK GAP, 1/8”-3/16” .
*CHECK IGNITION CABLE, AND GROUND
WIRE,
*CHECK 24V WIRING FROM TRANSFORMER
TO IGNITION CONTROL / AND CHECK IF
CORRECT GAUGE OF WIRE FOR DISTANCE.
*REPLACE WIRES IF NECESSARY.
*sportSchwank 30 ONLY: CHECK THAT GAS
SUPPLY PRESSURE EXCEEDS 4.5” W.C. TO
CLOSE LOW GAS PRESSURE SWITCH …..
REMEDY GAS PRESSURE OR REPLACE
SWITCH IF DEFECTIVE
*CHECK FOR 24 VAC ACROSS GAS VALVE
TERMINALS ON CONTROL. IF NO VOLTAGE,
.........REPLACE CONTROL.
YES NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
IF 24V IS PRESENT AND VALVE DOES NOT
OPEN.......REPLACE VALVE
GAS VALVE OPENS.
NO
Page 17
YES
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