Schwank terrasSchwank+ 4 User manual

terrasSchwank+
Patio gas-infrared-heater
terrasSchwank+ 4 (manual control)
terrasSchwank+ 4A (single-stage automatic control)
terrasSchwank+ 7/2A (two-stage automatic control)
terrasSchwank+ 7/2A
with housing
Technical Manual NL (English)
0085BR0505
Document version date 21.02.2014 Technical specification subject to change

terrasSchwank+ Technical Manual
1
Content
General ...................................................................................................................................2
Safety instructions.................................................................................................................2
Mounting and Commissioning .............................................................................................3
Safety distances to combustibles........................................................................................4
Technical data and dimensions............................................................................................6
User instruction.....................................................................................................................9
Adjusting nominal thermal load .........................................................................................10
Service / Maintenance .........................................................................................................12
Technical operation data.....................................................................................................13
Installation of the housing..................................................................................................16
Spare parts...........................................................................................................................17
EC type examination certificate..........................................................................................18
EC declaration of conformity..............................................................................................21

terrasSchwank+ Technical Manual
2
General
The set-up and operation of this infrared gas
heater complies with the standards and safety
regulations valid in Europe.
Please read these technical instructions
carefully before using this device.
Consideration of the stated instructions and
pre-set requirements is a pre-condition for our
warranty and is necessary for proper
installation and trouble-free operation.
The patio heater terrasSchwank+ is
exclusively designed for heating outdoor
areas or well ventilated rooms (at least 1/4 of
the surrounding surface is open). An
operation which is different or goes beyond
this, is not considered as the intended
operation. For any possible damage resulting
from this, Schwank will not be liable. Any risk
resulting from this will be borne by the user
alone.
Safety instructions
This device has been designed by recognized
safety rules. However, in case of improper
operation, dangers may arise for the user or
for third parties or damage may arise to the
device and other properties.
In order to avoid this, it is important that you
carefully read and follow the following safety
instructions.
General safety instructions
•Use only the device as intended and in a
technical perfect condition.
•Ensure that all persons who operate, fit, install,
commission, service or repair this device have
read this Technical Manual. Keep the Technical
Manual at the same place of operation.
•Consider all generally valid legal and other
mandatory rules related to accident prevention.
•Don’t make any alterations, additions or
conversions of the device without the express
approval of Schwank GmbH.
•All spare parts must comply with the technical
requirements. Therefore apply only
original spare parts delivered by Schwank
GmbH.
Safety Instructions on electrical fittings
•Risk of electrical shock!
You can be fatally be injured by electrical
shocks. Any working on electrical fittings
may be only done by an electrical specialist
or by trained persons under the guidance and
supervision of an electrical specialist in
accordance with the rules of electrical
engineering.
•Check the electrical fittings regularly. Damaged
cables etc. must be replaced immediately.
•When working on the electrical fittings, the
device must be set to a zero potential. Ensure
that the device cannot be accidentally switch-on
during the working.
Safety by handling the device
Assembly, installation, commissioning, repair and
maintenance working may only be carried out by
competent persons for these purposes. If you have
questions on this, please contact the after-sales
service of SCHWANK GmbH Germany
Tel.: [phone].
•
••
•We recommend that these installation guidelines have
to be followed together with national rules in force, any
local byelaws and the current IEE wiring regulation. This
affects specially:
Gas installation
Heater installation
Electrical installation
Ventilation installation.
Notwithstanding their limited scope, the appliance must
be installed by a competent person in accordance with
the relevant provisions of the relevant gas safety
regulations. Full compliance with all relevant regulations,
including amendments, in force at the time of installation
is a pre-requisite of our warranty.
•
••
•Fire risk !
Observe the safety distances to combustibles
(see page 4 and 5).
•
••
•Ensure in assembly and mounting that the ignition
part is easy to access.
•
••
•Lay the gas lines and electric cables so that they cannot
be heated by the rising waste gases or by direct thermal
radiation of the heater. Use heat resistant cables near
the heater.

terrasSchwank+ Technical Manual
3
Mounting and
Commissioning
•This heater can be mounted on a rain-protected
wall or under a roof. For outdoor installation
please install additionally the housing
(accessory).
•Start mounting by fixing the bracket of the
heater on the wall. Use the metal links between
bracket and reflector. Consider the safety
distances to combustibles to the top and to both
sides.
•In that case you want to install the housing
(accessory), then please fix first the second
bracket for the housing at the wall (the vertical
distance to the heater bracket is 123 mm).
•Now mount the heater by two metric screws /
washers / nuts M8 at the bracket link and by
fixing the screws adjust the radiant angle of the
heater (30°– 60°).
•For gas supply connect the flexible hose to the
gas valve.
•For electrical supply of the automatic heaters
4A and 7/2A connect the line 230 V, 50 Hz
to the control unit. For the 7/2A connect
additionally the second electrical supply cable
to the solenoid.
The ionisation and ignition cable are already
connected.
•Check the gas inlet pressure:
Natural gas L: 25 mbar for Type 4
Natural gas L: 22 mbar for Type 4A and 7/2A
Propane: 50 mbar.
In that case you have a higher line pressure then
apply a governor (accessory). Ensure that all gas
connections are tight.
•Now start the heater and check all functions.

terrasSchwank+ Technical Manual
4
Safety distances to combustibles
terrasSchwank+ 4 und 4A
The heater can be angled (by two screws, washers and nuts) at the wall bracket.
Permissible range of angling: min 30°– max 60° (between burner and horizontal)
Max. temperatures of ceilings or walls: 85°C – with air flow min. 0,25 m/s
Safety distance to the side: 250 mm (measured from outer edge of reflector)
The noted safety distances on top of the heater are only valid
for the installation of heater and housing as shown.
Minimum hanging height and angle
Range of angling (a) 30 – 60°
terrasSchwank 4 and 4A 2100 mm

terrasSchwank+ Technical Manual
5
terrasSchwank+ 7/2A
The heater can be angled (by two screws, washers and nuts) at the wall bracket.
Permissible range of angling: min 30°– max 60° (between burner and horizontal)
Max. temperatures of ceilings or walls: 85°C – with air flow min. 0,25 m/s
Safety distance to the side: 250 mm (measured from outer edge of reflector)
The noted safety distances on top of the heater are only valid
for the installation of heater and housing as shown.
Minimum hanging height and angle
Range of angling (a) 30 – 60°
terrasSchwank 7/2A 2500 mm

terrasSchwank+ Technical Manual
6
Technical data and dimensions
terrasSchwank+ 4
Gas connection: Burner Rp 1/4’’ (inside), flexible hose Rp 1/2“ (inside)
Gas / nominal input load Natural gas L (G25) / 3,9 kW / 25 mbar / 0,35 m³/h
/ inlet pressure: Propane (G31) / 3,5 kW / 50 mbar / 0,28 kg/h
/ consumption
Weight without housing: 3,2 kg
Weight with housing: 8,9 kg
Burner: 8/16 (with ceramic tile 14/4 EF)
Delivery scope:
•Burner with radiant grid and reflector
•Thermoelectric safety device (assembled completely)
•Wall bracket
Accessoires:
•Housing (against rain and for reduced safety distances on top)
•Connection hose with gas cock (Rp 1/2“, length 500 mm) and thermally activated shut-off device
•Gas governor

terrasSchwank+ Technical Manual
7
terrasSchwank+ 4A
Gas pipeline: Burner Rp 1/4’’ (inside), flexible hose Rp 1/2“ (inside)
Max. inlet pressure: 100 mbar
Min. inlet pressure: Natural gas L (G25): 22 mbar, Propane and Butane: 50 mbar
Gas / nominal input load Natural gas L (G25) / 3,5 kW / 20 mbar / 0,35 m³/h
/ orifice pressure: Propane (G31) / 3,5 kW / 48 mbar / 0,28 kg/h
/ consumption
Weight without housing: 5,2 kg
Weight with housing: 10,9 kg
Burner: 8/16 (with ceramic tile 14/4 EF)
Delivery scope:
•Burner with radiant grid and reflector
•Solenoid valve, pilot burner electrical ignition (assembled completely), automatic control
•Electric supply cable for the control unit
•Wall bracket
Accessoires:
•Housing (against rain and for reduced safety distances on top)
•Connection hose with gas cock (Rp 1/2“, length 500 mm)
•Control box with 1 or 3 switches
•Gas governor

terrasSchwank+ Technical Manual
8
terrasSchwank+ 7/2A
Gas pipeline: Burner Rp 1/4’’ (inside), flexible hose Rp 1/2“ (inside)
Max. inlet pressure: 100 mbar
Min. inlet pressure: Natural gas L (G25): 22 mbar, Propane and Butane: 50 mbar
Gas / nominal input load Natural gas L (G25) / 6,7 – 4,7 kW / 20 – 10mbar / 0,67 m³/h
/ orifice pressure: Propane (G31) / 6,7 – 4,7 kW / 48 – 24 mbar / 0,52 m³/h
/ consumption
Weight without housing: 7,6 kg
Weight with housing: 14,5 kg
Burner: 16/2 (with ceramic tile 14/4 EF)
Delivery scope:
•Burner with radiant grid and reflector
•Solenoid valve, pilot burner electrical ignition (assembled completely), automatic control
•Electric supply cable for he control unit and the solenoid
•Wall bracket
Accessoires:
•Housing(against rain and for reduced safety distances on top)
•Connection hose with gas cock (Rp 1/2“, length 500 mm)
•Control box with 1 or 3 switches
•Gas governor

terrasSchwank+ Technical Manual
9
User instruction
terrasSchwank+ 4
(manual control)
Never light up the heater directly
at the gas orifice or injector!
Switching on
(1) Open the gas cock.
(2) Press the ignition safety device and at
the same time hold a lighter at the ceramic
burner.
(3) Keep the ignition safety device pressed
for 30 seconds after the heater has
ignited.
(4) If the heater extinguish after you have
released the ignition safety device, then
repeat the procedure up to item (2).
Switching off
(1) Close gas cock.
Faults
After you have released the ignition safety device,
the heater extinguish again:
•Check the position of the thermo-couple.
The head of the thermo-couple has to be
circa 10 mm inside the ceramic burner
surface. The distance of the head to the
ceramic tile has to be circa 12 mm.
•The thermo-couple is defective.
•The ignition safety device is defective.
Heater burns towards inside, uniformly or only
partially:
•Ceramic tiles are damaged or polluted.
Close the gas cock and call for an installer.
terraSchwank+ 4A und 7/2A
(automatic control)
Switching on
(1) Open gas cock.
(2) Switch on heater by switching on the
electrical supply.
(3) Approximate 2 seconds after this the
ignition process starts. The ignition
process lasts max. 30 seconds.
As soon as the valve opens and the
flame appears, so the control unit
monitors the flame by the ionisation
electrode.
(4) If after 30 sec. no flame appears, then
the control unit stops the ignition process
and starts a second attempt after a pause
of 20 seconds.
Switching off
(1) Switch off the heater using the electrical
supply device.
(2) Close the gas cock in case of long term
off time.
Faults
No ignition spark present:
•Automatic control, ignition electrode or
ignition cable defect.
•No voltage present.
Flame appears, but is not monitored by the control
and heater shuts down after 30 seconds
•Automatic control defect or connections
are not correct.
•Ionisation electrode or ionisation cable
defect.
•Distance between ionisation electrode
and pilot burner head too large (max. 7 mm).
Heater does not get gas:
•Gas cock closed or solenoid valve defect.
Heater burns towards inside, non-uniformly or only
partially:
•Ceramic tiles are damage or polluted.
Close the gas cock and call installer.

terrasSchwank+ Technical Manual
10
Adjusting nominal
thermal load
terrasSchwank+ 4A (single stage)
Caution!
Pressure regulators are not
adjusted at the factory. The
system may not be put into
operation until adjustment has
been carried out
Determine the related orifice pressure
(table page 13). This table is for natural gas
with a calorific value Hi,n. If the calorific value of
the used natural gas is different, determine the
related orifice pressure with the pressure-
Wobbe-diagram (diagram on page 14). Please
get information about the Wobbe-Index of your
district from your gas supply company.
Select the heater which is installed furthest away
from the inlet of the gas to carry out the following
works:
Determine inlet pressure
Open first the gas cock which is at the end of
the flexible gas hose.
Open the test nipple (1) (Fig. 1)
Connect a pressure measuring device to the
test nipple and determine the inlet pressure.
The inlet pressure must be at least 2 mbar
higher than the related orifice pressure.
Fig. 1: Solenoid valve (single-stage)
Close the test nipple
Check the test nipple after every
measurement. The test nipple
must be closed!
Adjustment of the orifice pressure
Open the test nipple (2) (Fig. 1)
Connect a pressure measuring device to the
test nipple (2) and determine the orifice
pressure.
Remove the sealing screw on the pressure
regulator (3) and turn the adjustment screw (4)
until the screw is flush with the valve housing
(5) (Fig. 2).
Fig. 2: Sectional view of the valve with set screw
Put the heater into operation.
Slowly screw in the adjustment screw (4) while
continuously watching the pressure measuring
device.
As soon as the required orifice pressure is
reached, be sure not to turn the screw further.
Close the test nipple.
Check the test nipple after every
measurement. The test nipple
must be closed!
Mount the sealing screw (3).
Check all connections for gas-tightness when
the heater is in operation (use a leak detector).



2
1
3

terrasSchwank+ Technical Manual
11
terrasSchwank+ 7/2A (two-stage)
Caution!
Pressure regulators are not
adjusted at the factory. The
system may not be put into
operation until adjustment has
been carried out.
Determine the related orifice pressure
(table page 13). This table is for natural gas
with a calorific value Hi,n. If the calorific value of
the used natural gas is different, determine the
related nozzle pressure with the pressure-
Wobbe-diagram (diagram page 14). Please get
information about the Wobbe-Index of your
district from your gas supply company.
Choose the heater which is installed furthest away
from the inlet of the gas to carry out the following
works:
Determine inlet pressure
Open first the gas cock which is at the end of
the flexible gas hose.
Open the test nipple (1) (Fig. 3).
Connect a pressure measuring device to the
test nipple and determine the inlet pressure.
The inlet pressure must be at least 2 mbar
higher than the related orifice pressure.
Fig. 3: Solenoid valve (two-stage)
Close the test nipple.
Check the test nipple after every
measurement. The test nipple
must be closed!
Adjustment of the orifice pressure
Open the test nipple (2) (Fig. 3).
Connect a pressure measuring device to the
test nipple (2) and determine the orifice
pressure.
Use a small screwdriver (5) to remove the
housing (4) of the plug (3). Put the screwdriver
into one of the gaps and lift the housing with the
screwdriver and the hand (Fig. 4).
Fig. 4: Sectional view of the valve with set screw
Orifice pressure for max. load:
In table page 13 (or diagram page 14) you can
find the relevant orifice pressure for max. and min.
load for different heaters and gas types.
Determine the orifice pressure for your heating
system for max. load.
Switch the power supply for regulator and
control on.
Turn the adjustment screw A (width 8 mm) until
you slightly exceed the needed nozzle pressure
and then reduce to the correct value.
Clock-wise: gas pressure increase,
Counter-clockwise: gas pressure decrease
Orifice pressure for min. load:
Determine from Table page 13 the relevant
orifice pressure for your heating system for min.
load.
Switch the power supply for regulator I on
(see wiring diagram page 15).
Disconnect the power supply to the solenoid.
Turn the adjustment screw Bwith the
screwdriver until you reach the needed orifice
pressure.
1
2
3

terrasSchwank+ Technical Manual
12
Check the adjustment, described above.
Close the test nipple
Check the test nipple after every
measurement. The test nipple
must be closed!
Mount the housing (4) of the plug (3).
Put the heating system into operation.
Check the inlet orifice pressure in full operation.
Carry out the check at a heater installed
furthest away from the inlet of the gas. The
connection pressure must be at least 2mbar
above the actual nozzle pressure.
Service /
Maintenance
Regular maintenance is a requirement for trouble-
free operation. For safety reasons the maintenance
of gas heaters is therefore required and recommended.
The maintenance is to be carried out annually.
Depending on the operation conditions (e.g. dusty air
or sea side) we recommend maintenance in shorter
intervals.
Checks during service:
•Check the heater with gas connections and
electrical connections concerning damage or
pollution, clean if necessary.
•Check tightness of all gas connections, fittings
and components.
•Check the safety function of the gas valve,
control unit, ignition and flame sensor.
•Check the gas line pressure.
•For faults read page 9.
•Check the safety distances to combustibles.

terrasSchwank+ Technical Manual
13
Technical operation data (NL)
Determine the pressure for terrasSchwank+ 4 (manual control)
Type Gas (1) Gas category
Nominal
heat load
[kW]
Inlet
pressure
[mbar]
Orifice
∅
∅∅
∅ size
[mm]
Air baffle
Orifice
type
for pilot
burner
4 Natural Gas L
2L 3,9 25 1,50 none none
Propane 3P 3,5 50 0,85 none none
Determine the pressure for terrasSchwank+ 4A (single-stage automatic control)
Type Gas (1) Gas
category
Nominal
heat load
[kW]
Orifice
pressure
[mbar]
Orifice
∅
∅∅
∅ size
[mm]
Air baffle
Orifice
type
for pilot
burner
4A Natural Gas L 2L 3,5 20 1,50 none 26.2
Propane 3P 3,5 48 0,85 none 24.1
Determine the pressure for terrasSchwank+ 7/2A (two-stage automatic control)
Type Gas (1) Gas category
Nominal
heat load
[kW]
max. – min.
Orifice
pressure
[mbar]
max. – min.
Orifice
∅
∅∅
∅ size
[mm]
Air baffle
Orifice
type
for the pilot
burner
7/2A Natural Gas L 2L 6,7 - 4,7 20 – 10 2,10 2x 60 26.2
Propane 3P 6,7– 4,7 48 – 24 1,18 2x 60 24.1
Minimal Inlet pressure for single-stage and two-stage devices:
Natural gas L (G25): 22 mbar
Propane (G31): 50 mbar
(1) Nat. gas H (G20): Hi,n= 9.97 kWh/m³ / Ws,n= 14.8 kWh/m³ ( for 0°C / 1013 mbar)
(2) Max. inlet pressure = 100 mbar

terrasSchwank+ Technical Manual
14
Wobbe-index and orifice pressure for terrasSchwank+ 4A (single-stage)
Wobbe-index and orifice pressure for terrasSchwank+ 7/2A (two-stage)

terrasSchwank+ Technical Manual
15
Electrical wiring of the ignition and control unit
terrasSchwank+ 4A
terrasSchwank+ 7/2A

terrasSchwank+ Technical Manual
16
Installation of the housing
Wall bracket, side housing plates, bottom plate:
Top cover:

terrasSchwank+ Technical Manual
17
Spare parts
Gerät /
Device Artikel-Num. / Item number Bezeichnung / Name of item
4 121 02600 Gasanschluß Bgrp. terrasSchwank+ 4 Handzündung
4 122 30370 Sechskantmutter für Thermoelement
4 121 02250 Seitenblech links terras+ (mit Schlitz)
4 192 06009 Thermoelement CT 101 034 320 lg.Gew. M8x1
4 121 02196 Verlängerungslasche Aufhängung R terras+ 4
4A 121 02144 Blechkonsole Regelstr. terrasSchwank+ 4 email.
4A 121 02154 Schutzblech Regelstr. terrasSchwank+ 4 email.
4A 192 11386 Gas-Kombiventil VK4115A mit Gasanschluss (1-stufig) (ohne Kabel !)
4A 192 11382 Zünd/Regeleinheit ESYS 1-stufig terrasSchwank+ (komplett mit Kabel !)
4A 121 02228 Zündgasleitung terrasSchwank+ 4A
7/2A 121 02585 Anschlussstück terras 7 komplett offen
7/2A 121 02140 Blechkonsole Regelstr. terrasSchwank+ 7 email.
7/2A 121 02130 Bodenlochblech terrasSchwank+ 7 email.
7/2A 192 11420 Kabel III zweite Stufe ESYS Automat terrasSchwank+
7/2A 192 11384 Gas-Kombiventil VK4115P mit Gasanschluss (2-stufig) (ohne Kabel !)
7/2A 121 02186 Montagebügel Schutzhaube terrasSchwank+ 7
7/2A 121 02220 Montagebügel terrasSchwank+ 7
7/2A 121 02162 Reflektor terrasSchwank+ 7 email.
7/2A 121 02150 Schutzblech Regelstr. terrasSchwank+ 7 email.
7/2A 121 02124 Schutzhaube terrasSchwank+ 7 email.
7/2A 140 30476 Schwank-Brenner 16/2 14/4 E-F cera
7/2A 121 02050 Streckmetallnetz terrasSchwank+ 7
7/2A 140 05358 Überwurfschraube Kochstellenbrenner
7/2A 192 11380 Zünd/Regeleinheit ESYS 2-stufig terrasSchwank+ (komplett mit Kabel !)
7/2A 121 02230 Zündgasleitung für terrasSchwank+ 7/2A
4, 4A 121 02136 Bodenlochblech terrasSchwank+ 4 email.
4, 4A 121 02164 Reflektor terrasSchwank+ 4 email.
4, 4A 121 02283 Montagebügel Schutzhaube terrasSchwank+ 4
4, 4A 121 02222 Montagebügel terrasSchwank+ 4
4, 4A 121 02126 Schutzhaube terrasSchwank+ 4 email.
4, 4A 140 30484 Schwank-Brenner 8/16 B 14/4 E-F cera m.A
4, 4A 121 02052 Streckmetallnetz terrasSchwank+ 4

terrasSchwank+ Technical Manual
18
Gerät /
Device Artikel-Num. / Item number Bezeichnung / Name of item
4A, 7/2A 192 11416 Automatendeckel ESYS Automat (ohne Schraube !)
4A, 7/2A 193 03058 Doppelkegelring 6 DIN 3862 MS
4A, 7/2A 193 03055 Doppelkegelring 8 DIN 3862 MS
4A, 7/2A 192 10560 Gasfeuerungsautomat ESYS S4965R2027B
4A, 7/2A 192 11400 Ionisationskabel Kabellänge 220mm (mit Rundstecker)
4A, 7/2A 192 11410 Kabel I Netzanschluss ESSYS Automat (Stecker X1)
4A, 7/2A 192 11414 Kabel II Kabelbrücke ESYS Automat (Stecker X3)
4A, 7/2A 199 40160 Schnappmutter 4,8 SNU 5594 Edelstahl
4A, 7/2A 226 00830 Schraube 7500 CE (08.95) GEW.FU. LINSKO. A2K M4x10
4A, 7/2A 121 02120 Seitenblech links terrasSchwank+ email.
4A, 7/2A 121 02844 Überwurfschraube Zündbrenner M10 x 1
4A, 7/2A 121 02530 Zündbrenner Bgrp. terrasSchwank+
4A, 7/2A 192 11404 Zündkabel Kabellänge 220mm (mit Rundstecker)
4, 4A, 7/2A 199 40349 Anschweissmutter M4 Typ 912 Wst.Nr. 1.4301
4, 4A, 7/2A 420 01330 Aufkleber "Schwank" 80mm x 12mm Farbe Orange
4, 4A, 7/2A 121 02520 Haltelasche für Schutzhaube terrasSchwank+
4, 4A, 7/2A 121 02210 Montagebügel für Seitenblech terrasSchwank+
4, 4A, 7/2A 121 02020 Schraubenschutzkappe SRM 5SW8 PE schwarz
4, 4A, 7/2A 225 00147 Sechskant-Blechschraube St 4,8 x 13
4, 4A, 7/2A 121 02110 Seitenblech rechts terrasSchwank+ email.
4, 4A, 7/2A 121 02175 Unterlegleiste für Brenner terrasSchwank+
4, 4A, 7/2A 121 02190 Verlängerung für Aufhängung links terrasSchwank+
Düsen und LDS /
Orifices and air baffles:
4, 4A 143 00770 Düse-Kochstellenbrenner Ø 0,77 mm
4, 4A 143 00856 Düse-Kochstellenbrenner Ø 0,85 mm
4, 4A 143 01356 Düse-Kochstellenbrenner Ø 1,35 mm
4, 4A 143 01496 Düse-Kochstellenbrenner Ø 1,50 mm
4A, 7/2A 192 05169 Düse 24.1 für Zündbrenner Flüssiggas G 24.1
4A, 7/2A 192 05150 Düse 26.2 für Zündbrenner Erdgas G 26.2
7/2A 143 01127 Düse-Kochstellenbrenner Ø 1,12 mm
7/2A 143 01186 Düse-Kochstellenbrenner Ø 1,18 mm
7/2A 143 01941 Düse-Kochstellenbrenner Ø 1,95 mm
7/2A 143 02107 Düse-Kochstellenbrenner Ø 2,10 mm
7/2A 140 04211 Luftdrosselscheibe Ø 54 mm
7/2A 140 04203 Luftdrosselscheibe Ø 60 mm