Behncke QWT 100-20, QWT 100-40, QWT 100-30, QWT 100-104, QWT 100-70 Operating Instructions Manual
...
Operating Instructions
Water/water heat exchanger
• Heating/swimming pool water (QWT, WTI)
• Solar system/swimming pool water (SWT, SWT-T)
Read the operating i nstructions before commencing any work!
Doc ID: 07/2015
Water/water heat exchanger – QWT, WTI, SWT, SWT-T
BEHNCKE GmbH
Bavaria:
Michael-Haslbeck Strasse 13
85640 Putzbrunn, Germany
Telephone: +49 (0)89 45 69 17-0
Fax: +49 (0)89 46 85-11
Saxony-Anhalt:
Stoetterlinger Strasse 36 a
38835 Bühne, Germany
Telephone: +49 (0)39421 - 796-0
Fax: +49 (0)39421 / 796-30
Email: info@behncke.com
Website: www.behncke.com
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Contents
General ............................................................................................................... 4
1 Safety ........................................................................................................... 5
1.1 Dangers in working with t his heat exchanger ........................................................ 5
1.2 Safety instructions and tips ................................................................................ 6
1.3 Proper use ........................................................................................................ 7
1.4 Sources of danger ............................................................................................. 8
1.5 Safety precautions at the installation site ............................................................. 9
2 Technical specifications .............................................................................. 10
2.1 QWT 100* ...................................................................................................... 10
2.2 SWT 100* ...................................................................................................... 10
2.3 SWT 100 Titanium* ......................................................................................... 11
2.4 WTI 100* ....................................................................................................... 11
3 Setup/installation ...................................................................................... 12
3.1 Transport/storage ........................................................................................... 12
3.2 Setup and connection dimensions ...................................................................... 12
3.3 Setup ............................................................................................................ 14
3.4 Installation ..................................................................................................... 15
3.4.1 Installation layout above the water level ...................................................... 15
3.4.2 Installatio n layout below the water level ...................................................... 16
3.4.3 Connecting the heat exchanger ................................................................... 16
4 Function ..................................................................................................... 18
5 Commissioning ........................................................................................... 19
6 Maintenance/repair .................................................................................... 20
6.1 Winter storage of the WHE in frost-free areas ..................................................... 20
6.2 Winter storage of the WHE in areas exposed to freezing ....................................... 20
6.2.1 Heat exchanger in vertical layout ................................................................ 20
6.2.2 Heat exchanger in horizontal layout ............................................................. 20
7 Maintenance of the stainless steel .............................................................. 21
8 Faults and remedies ................................................................................... 22
9 EC Declaration of Conformity in the context of the EC Directives ............... 23
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
General
General
Dear customer
We congratulate you on your purchase of your ne w, high quality water hea t exchanger "Made
in Germany".
Your specialist dealer will be pleased to provide any assistance you require.
Please read the installation instructions caref ully .
Keep the installation instructions on hand for future refere nce.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Safety
1 Safety
1.1 Dangers in working with this heat exchanger
The heat exchanger is manuf actured in accordance with the latest technological advances and
recognised safety regulations. However, it may be dangerous when in use, as follows
• injury to the operator or
• third parties, or
• faults on the heat exchanger or
• damage to other objects.
All persons involved with installatio n, commissi oning, operation, maintenance and repair of the
heat exchanger must meet the following requirements
• mentally and physically qualified.
• appropriately qualified.
• carefully observe the installation instruc t io ns.
The heat exchanger m ust used under the following conditions only
• for the intended use.
• in perfect technically safe condition.
Faults that could affect safety must be repaire d by a qua lified plumber.
Your safety is at stake.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
CAUTION!
If it is not observed, injury or property damage may result.
IMPORTANT!
may result.
1.2 Safety instructions and tips
The following icons a re used in the operating instructions:
DANGER!
This icon indicates an immediate danger to the health of persons.
WARNING!
This icon indicates a potential danger to the health of persons.
If it is not observed, serious injury may result.
Safety
This icon indicates a potentially dangerous situation for the health of
persons.
This icon indicates important instructions for correct working with the system.
If the instructions are not observed, faults in the system or the surroundings
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
IMPORTANT!
reasons.
Safety
1.3 Proper use
The QWT series heat exchanger is designed exclusively for heating pool water via hot water
heating.
The SWT series heat exchanger is designed exclusively for heating pool water via heat pump,
solar system or a low temperature heating system.
The WTI series heat exchanger is designed exclusively for heating pool water via hot water
heating; suitable for water with a raised chloride content (e.g. brine pools, therapy pools,
seawater pools).
The SWT-T series heat exchanger is designed exclusively for heating pool water via heat
pump, solar system or a low temperature heating system; suitable for water with a raised
chloride content (e.g. brine pools, therapy pools, seawater pools).
Any other use or use beyond this is not considered proper use. The manufacturer, BEHNCKE
® GmbH, will not be liable for any damage resulting from improper use.
Any other use requires consultation with and approval by the manufactur er.
Proper use also includes
• following all directions in the installation inst ructions and
• compliance with inspection and maintenance schedules.
The maximum approved operating pressure must not be excee ded.
Heating coil (primary side) max. 1000 kPa (10 bar)
Pool water (secondary side) max. 300 kPa (3 bar)
Only water with the following values may be used:
QWT, SWT WTI, SWT-T
Chloride content max. 500 mg/ l max. 3000 mg/l
Free chlorine max. 1.3 mg/l unlimited
pH 6.5 - 8.2 6.5 - 8.2
Salt content – max. 3.5%
Conversions and modifications of the heat exchanger are prohibited for safety
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
CAUTION!
sustain leaks.
WARNING!
temperatures up to 100 °C.
CAUTION!
thus become damaged.
CAUTION!
heat exchanger may be subject to contact corrosion due to immersion in wa ter.
CAUTION!
the pool water.
1.4 Sources of danger
The heat exchanger may be damaged.
If the max. operating pressure of 300 kPa (3 bar) is exceeded on the pool water
side or 1000 kPa (10 bar) on the heating water side, the heat exchanger m a y
There is a risk of combustion.
The connections on the heating water side of t he h eat exchanger can attain
Safety
The heat exchanger can heat up to the feed tempera ture of the heating water if
the pool water does not flow through it.
Connected plastic pipes may be thermally loaded to a non-permitted level and
If the heating circuit is not locked with the circulating/filter pump, the heat
exchanger may heat up to the feed temperature of the heating water.
The heat exchanger may be damaged.
Due to water drips onto the exterior skin or metal parts being swept into the
Pool water can become contaminated.
Metal parts being swept away into the heating coil of the heat exchanger can
cause leaks in the coil due to contact corrosion. Heating water can enter into
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CAUTION!
damage at least once a week during pool operation.
Safety
1.5 Safety precautions at the installation site
The heat exchanger must be fitted in a frost-free area using the bracket supplied.
Make sure that the maximum positive operating pressure of 300 kPa (3 bar) on the seconda ry
side and 1000 kPa (10 bar) on the primary side is not exceede d .
The heat exchanger or surroundings may be damage d .
Inspect the heat exchanger and its connec tions for leakage and external
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Minimum pumping output
Output:
kW for
Heating
Pool water
Connection
Article
70 °C
m³/h
kPa
m³/h
kPa
Inches
Article no.
QWT 100-20
16 2 4.3
10
4.3
1 ½ ¾
305.018.00
QWT 100-30
20 2 6.4
10
4.9
1 ½ ¾
305.026.00
QWT 100-40
30 2 9.7
10
5.3
1 ½ ¾
305.033.00
QWT 100-70
50 3 3.5
12
6.6
1 ½ 1
305.017.00
QWT 100-104
90 5 14
15
11.25
2 1
305.027.00
QWT 100-140
115
2 x 3
2 x 3.5
20
12.9
2 1
305.037.00
QWT 100-209
200
2 x 5
2 x 14
25
25.3
2 1
305.047.00
Minimum pumping output
Output:
kW for
Heating
Pool water
Connection
Item
70°C 50°C
m³/h
kPa
m³/h
kPa
Inches
Article no.
SWT 100-20
40 / 24
1.2 8 10 6 1 ½ ¾
330.004.00
SWT 100-25
65 / 35
1.8
27
10 7 1 ½ ¾
330.006.00
SWT 100-40
68 / 40
2.2 4 10 6 1 ½ 1
330.008.00
SWT 100-52
112 / 65
3.5
15
12 7 1 ½ 1
330.010.00
2 Technical specifications
2.1 QWT 100*
Technical specifications
2.2 SWT 100*
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Minimum pumping output
Output:
kW for
Heating
Pool water
Connection
Item
70°C 50°C
m³/h
kPa
m³/h
kPa
Inches
Article no.
SWT 100-20
40 / 24
1.2 8 10 6 1 ½ ¾
331.004.00
SWT 100-40
68 / 40
2.2 4 10 6 1 ½ ¾
331.008.00
Minimum pumping output
Output:
kW for
Heating
Pool water
Connection
Item
70 °C
m3/h
kPa
m3/h
kPa
Inches
Article no.
WTI 100-20
16 2 4.3
10
4.3
PVC 40 ¾
305.080.55
WTI 100-30
20 2 6.4
10
4.9
PVC 40 ¾
305.081.55
WTI 100-40
30 2 9.7
10
5.3
PVC 40 ¾
305.082.55
WTI 100-70
50 3 3.5
6.6
6.6
PVC 40 1
305.083.55
WTI 100-104
90 5 14
11.25
11.25
PVC 50 1
305.084.55
WTI 100-140
115
2 x 3
2 x 3.5
12.9
12.9
PVC 50 1
305.085.55
WTI 100-209
200
2 x 5
2 x 14
25.3
25.3
PVC 50 1
305.086.55
2.3 SWT 100 Titanium*
2.4 WTI 100*
Technical specifications
* Subject to modifications or custom versions.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Item
A
mm
B
mm ø
C
mm
D
DN
E
Inches
F
Inches
QWT 100-20
275
125
90
50
1 1/2
3/4
QWT 100-30
315
125
135
50
1 1/2
3/4
QWT 100-40
385
125
205
50
1 1/2
3/4
QWT 100-70
520
190
290
50
1 1/2
1
QWT 100-104
660
190
430
60 2 1
SWT 100-20
530
153
335
50
1 1/2
3/4
SWT 100-25
710
153
520
50
1 1/2
3/4
SWT 100-40
800
190
570
50
1 1/2
1
SWT 100-52
1090
190
870
50
1 1/2
1
Setup/installation
3 Setup/installation
3.1 Transport/storage
Transport the water heat exchanger only when empty.
Always store the washed and drained water heat exc hanger indoors in a non-aggressive
atmosphere.
3.2 Setup and connection dimensions
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Item
A
mm
B
mm ø
C
mm
G
mm
D
DN
E
Inches
F
Inches
QWT 100-140
920
190
295
100
60 2 1
QWT 100-209
1190
190
430
100
60 2 1
Item
A
mm
B
mm ø
C
mm
D
DN
F
Inches
WTI 100-20
395
125
90
PVC DN40
3/4
WTI 100-30
440
125
135
PVC DN40
3/4
WTI 100-40
505
125
205
PVC DN40
3/4
WTI 100-70
640
190
290
PVC DN40
1"
WTI 100-104
820
190
425
PVC DN40
1"
SWT-T 100-20
545
153
335
PVC DN40
3/4
SWT-T 100-40
815
130
570
PVC DN40
1"
Setup/installation
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Item
A
mm
B
mm ø
C
mm
G
mm
D
DN
F
Inches
QWT 100-140
1080
190
295
100
PVC DN50
1
QWT 100-209
1350
190
430
100
PVC DN50
1
CAUTION!
Max. water pressure, secondary 300 kPa (3 bar)
When operating the heat i ng circuit, the running empty of the heat exchanger on
Setup/installation
3.3 Setup
Set up the heat exchanger indoors in frost-proof, dry rooms with a non-aggressive atmosphere
only. Dripping water may damage the heat exchanger.
Make sure access for assembly and disassembly is guaranteed.
The heat exchanger can be installed above or below the water level.
The following water values must be observed for the heat exchanger.
QWT, SWT WTI. SWT-T
Chloride content max. 500 mg/l max. 3000 mg/l
Free chlorine max. 1.3 mg/l unlimited
pH value 6.5 to 8.2 6.5 to 8.2
Salt content - max. 3.5 %
Max. water pressure, primary 1000 kPa (10 bar)
IMPORTANT!
the pool water side must be prevented.
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Setup/installation
3.4 Installation
Before installation, check that the heat exchanger has no visible damag e.
The heat exchanger can be installed horizontally or vertically above or below the water level.
3.4.1 Installation layout above the water level
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CAUTION!
Ensure that the water quality and maximum pressure levels are observed.
CAUTION!
The heat exchanger can be damaged by chemicals.
3.4.2 Installation layout below the water level
Setup/installation
3.4.3 Connecting the he at ex c ha nger
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Install the stop and drainage valves in the feed and return lines of the heating
circuit inside the frost-proof area of the building.
The heat exchanger may be damaged.
The heat exchanger may be damaged.
When installing a third-party circuit, make sure that metal parts cannot enter
the heat exchanger.
The heat exchanger and steel pipes are electrically isolated by brass
connections.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
CAUTION!
penetrate the heat exchanger during filter standstill times.
Setup/installation
Purification equipment should always be installed after the heat exchanger.
When using chemicals (e.g. chlorine gas), it is not perm itted for any gases to
3.4.3.1 QWT/SWT/WTI/SWT-T connection to a circulating pump/filter system
• Connect the hot water circuit to the primary side of the heat exchanger.
• Connect the secondary side of the heat exchanger to the pool water pipe via pipe
connections using pipe clips or via the internal thread with plastic/brass screw
connectors.
• Connect the WTI and SWT-T on the secondary side to the pool water pipew ork using
PVC adhesive pipe bonds.
3.4.3.2 QWT 100-140/100-209 and WTI 100-140/100-209 connection to a filter
system
• Connect both heating coils of the heat exchanger to the heating water circuit.
• Connect the secondary side of the hea t exchanger to the pool water pipe via pipe
connections using pipe clips or via the internal thread with plastic/brass screw
connectors.
• Connect the WTI on the secondary side to the pool water pipework using PVC adhesive
pipe bonds.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Function
4 Function
In the QWT counterflow heat exchanger, the heat from the heating water circuit is transferred
to the pool water circuit.
In the WTI counterflow heat exchanger, the heat from the heating water circuit is transferred
to the pool water circuit. The WTI is manufactured from titanium and is suitable for use with
water with raised free chlorine values (e.g. brine pools, therapy pools, seawater pools).
In the SWT counterflow heat exchanger, the heat from the low temperature heating water
circuit or the solar system is transferred to the pool water circuit. The S WT -T is manufactured
from titanium and is suitable for use with water with raised free chlorine values (e.g. brine
pools, therapy pools, seawater pools).
A temperature sensor can be inserted into the integrated clamp in the immersion sleeve. In
combination with a control, the temperature of the poo l water can be controlled via the
temperature controller.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
WARNING!
• Drain both water circuits.
5 Commissioning
Have you read and understood these operating instructions – particularly
chapter 1 Safety? Do not operate the heat exchanger if you have not read and
understood the instructions!
The heat exchanger may be damaged.
Do not climb on the heat exchanger.
Always close all stop valves in both water circuits before performing any
maintenance and cleaning work.
Commissioning
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CAUTION!
filled with water.
6 Maintenance/repair
Inspect the heat exchanger and connections for leaks once a week.
6.1 Winter storage of the WHE in frost-free areas
Changes to technical systems by unqualified persons may result in injuries and
property damage.
If decommissioned in frost-free areas, the heat exchanger must be completely
Maintenance/repair
6.2 Winter storage of the WHE in areas exposed to freezing
The heat exchanger can be stored under freezing conditions after the following preparations.
• Close stop valves in both water circuits.
• Drain the heat exchanger and connecting pipes to the stop valves.
6.2.1 Heat exchanger in vertical layout
• Completely drain the heat exchanger via the drain fittings.
6.2.2 Heat exchanger in horizontal layout
• Remove the hea t exchanger in horizontal layout .
• Rinse the heat exchanger to remove contamination, and store dry.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Maintenance/repair
7 Maintenance of the stainless steel
Instructions fo r lo n g -life stainless steel
1. Keep the water in optimum clean condition at all times. Always follow the
manufacturer's instructions when adding chemicals (pH, chlorine concentration, salts,
etc.).
2. Never use disinfectants in the vicinity of stainless steel parts as these products are
bleaching agents and could cause stains on stainless steel.
3. Stainless steel will rust in contact with dust, sa lts, concrete, dirt and other materials
(particularly in contact with iron). Tr y to avoid such contacts.
4. When cleaning the pool (including the first time before filling the pool with water), it is
always recommended to remove the stainless steel items. This means that no cleaning
agent residues remain on the stainless steel parts. If it is not possible to remove the
stainless steel parts, these should be cleaned thoroughly afterwards with water.
5. In indoor swimming pools there is a higher concentration of corrosive chemical vapours.
For this reason, it is very important to carry out cleaning several times.
6. Where requi red , it is important to fit an earthing c onnection to the swimming pool to
achieve correct insulation and thus a longer service life of the stainless steel items.
7. In systems with hard water or heavy contamination, the stainless steel quality is
espec ia l ly im p o rtant.
Storage of stainless steel items
1. During the winter months it is advisable to follow the instructions below. Remove the
stainless steel articles and rinse thoro ughly with water. Dry the parts and do not keep
with chemicals and dosing units.
2. If limescale or other stains appear on the stainless steel items, clean these using
stainless steel cleaner and polishing agent - Never scrub with abrasive materials. - Then
rinse thoroughly with soft water and allow to dry.
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Effect
Check the possible cause
No power
Are the stop valves open?
specifications)?
8 Faults and remedies
Is the heat exchanger completely filled with water in both circuits?
Has the heat exchanger been vented?
Is the flow sufficient in the heating circuit (se e Technical
Faults and remedies
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Water/water heat exchanger – QWT, WTI, SWT, SWT-T
Product:
Coiled tube heat exchanger
Manufacturer:
BEHNCKE® GmbH
Type:
QWT, WTI, SWT, SWT-T
Type plate no.
Year of manufacture:
Operating medium:
Fluid
Max. operating pressure of
cylind rical wall (bar)
3
Test pressure of cylindrical wall
(bar):
4.29
Max. operating pressure of pipe
(bar):
10
Test pressure of pipe (bar):
14.3
EC Declaration of Conformity
9 EC Declaration of Conformity in the context of the EC
Directives
The Declaration of Conformity is in accordance with the listed EC directives and has been
developed, designed and manufacture d by:
BEHNCKE® GmbH
Michael-Haslbeck-Str. 13
D-85640 Putzbrunn/Munich
• Pressure Equipment Directive 97/23/EC
• DIN EN ISO 13732-1 – Surface temperature requirements
• Original operating instructions in German
Putzbrunn 27.02.2013 Christian Ebert
Operations Manager
---------------------------------------------------------------------------------------------------------City Date Name/signer and Signature
details of signer
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