Resol WMZ-M1 User manual

WMZ-M1
RESOLWMZ-M1(as fromVersion 3.0)
Mounting
Connection
Operation
Fault location
Examples
Thanks for buying the RESOL calorimeter.
Pay attention to this manual in order to make most efficient use of the calorimeter.

RESOL - Elektronische Regelungen GmbH •Heiskampstr. 10 •D-45527 Hattingen •Tel.:[phone] •Fax: [phone]
eMail: [e-mail] • Internet: http://www.resol.de
© RESOL 04196 wmz-m1_montage.pmd
RESOL WMZ-M1 (as from version 3.0) page 2/12
Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
Table of contents
Safety instructions, Imprint ............................................. 2
Technical data and functional survey .............................. 3
Order indication ................................................................ 4
1. Mounting..................................................................... 4
1.1 Flowmeter................................................................... 5
1.2 Electrical connection ................................................. 5
2. Sensor types................................................................ 6
3. Determination of the proportion ............................. 7
4. Function ....................................................................... 7
5. Operation .................................................................... 8
6. Indication and adjusting channels .............................. 9
6.1 Type of flowmeter ...................................................... 9
6.2 Amount of heat........................................................... 9
6.3 Rate of impulse ......................................................... 10
6.4 Propotion of the mixture .........................................10
6.5 Type of Glycol............................................................ 10
6.6 Individual module-address........................................ 11
6.7 Self contained transmission of values ...................... 11
7. Tips for fault location................................................12
This mounting- and operation manual including all parts is
copyrighted. Another use outside the copyright requires
the approval of RESOL - Elektronische Regelungen GmbH.
This especially applies to copies, translations, micro films
and the storage into electronic systems.
Editor: RESOL - Elektronische Regelungen GmbH
Important notice:
We took a lot of care to the texts and drawings of this
manual and to the best of our knowledge and conscience.
As faults can never be excluded, please note:
Your own calculations and plans under consideration of
thecurrentnorms and DIN-directions shouldonly be basis
for your projects.We don´t offer a guarantee for the
completeness of the drawings and texts of this manual -
they only represent some examples.They can only be used
onown risk.Noliability isassumedforincorrect,incomplete
or false information and the resulting damages.
Errors and technical changes excepted
Imprint:
TRD 802 Steamboiler of group III,
TRD 402 Equipment of steamboiler systems with hot water
generators of group IV
DIN 1988,Teil 1 – 8 Technichal rules for drinking water installation
DIN 4708,Teil 3 Central warm water heating systems
DIN 4751,Teil 1 + 2 Water heating systems
DIN 4753 Water heater and systems and for drinking water
DIN 4757,Teil 1 – 4 Solar heating and solar thermal systems
DIN 18338 Roofing and roof sealing works
DIN 18339 Plumbersworks
DIN 18451 Scaffolding works
VDE 0100 Set up of electrical operating supplies
VDE 0185 General rules for setting up overvoltage protection
systems
VDE 0190 Main potential equalization of electrical systems
DIN 18381 Gas-,water- and sewage installation systems
DIN 18382 Electrical cable- and line systems in housings
HeizAnlV Heating system regulation
Safety regulations:
Please read the following
information carefully before
installing and operating the
controller.In this way damage
to the solar system by
wrong installation will be
avoided. Please observe that
the mounting is adapted to
the characteristics of the
building, that the local
regulations are respected
and is conform to the
technical rules.

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
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© RESOL WMZM1_System 08/98
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Technical Data
RESOLWMZ-M1
Housing:
plastic, 118 x 71 x 26 mm
Display:
LC-Display, 26 x 13 mm
Power supply:
by the regulator or plug-in
power supply
Power consumption:
ca. 130 mW
Ambient temperature:
0 ... +40 °C
Heat transfer medium:
Water,propyleneglycol,ethylene
glycol, Tyfocor®LS
Volume part of glycol:
0 ... 70 % (in steps of 1% )
Pulse repetition rate:
0 ... 99 l/Imp (in steps of 1 l/Imp)
forflowmeter RESOLV40
Inputs:
2 sensors Pt1000
precision: 0,3 K
range: -30 ... + 150 °C
Bus-type:
RESOL VBUS
The RESOL WMZ-M1 is an universal calorimeter for thermal solar systems and
conventional heating systems.This calorimeter especially takes into consideration that
the density and the specific heat capacity of the heating medium are dependent on the
temperatureas wellas onthe mixingratio ofwater/glycol. Dueto theseparameters, the
measurement of feed flow and return flow temperature by 2 precision-platin sensors
and the evaluation of impulses of the flowmeter, the calorimeter RESOL WMZ-M1
calculates the heat amount.
A power failure protection guarantees that the adjusted control parameter and the
value of the calculated heat amount are maintained in case of a power failure. By means
of pushbuttons,different channels can be chosen and user planes can be changed.The
temperatureof the selectedmeasuring point,the heat gained,the actual powerandthe
volumetric flow of the system are indicated on the LC-display. A control lamp is also
installed for indication of sensor defects.A second user plane is used for indication of
system adjustments and control values, which can be analoguely adapted in case of
system changes.
Thepower supply iseffectedby thebusconduction according tothe regulator used,so
that an additional plug-in power supply is not necessary.Otherwise,the power supply
of the WMZ-M1 will be effected by the delivered plug-in-power supply. 2 parallelly
linked bus connections enable the connection of additional RESOL-modules.
The transfer of all indicated values to the respective RESOL regulator, computer or
data logger for additional processing or evaluation is effected by a data output.
Example for one system with one collector (1) and
one store (5)
The RESOL WMZ-M1 (2) calculates the temperature
difference of feed flow- (6) and return flow temperature
(7).With regard to the mixing ratio of water/glycol and the
evaluation of the impulses of the flowmeter (8),theWMZ-
M1 calculates the heat amount taken up by the store.The
pump (9) should always be used in combination with a non
return valve (10).The power supply of the WMZ-M1 is
effected by the regulator (VBUS) (3) or by the delivered
plug-in power supply (4).

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
Unlock the two snap connections (1) in the housing by
means of a small screwdriver.Afterwards remove the
housing (2) from the base (3).
The housing is fixed by means of the 2 holes in the base
plate (mounting only in dry inner rooms).Afterwards the
electrical connections can be made.
1. Mounting
ThecalorimeterRESOLWMZ-M1is availableas singledevice
as well as full kit with 2 Pt1000 sensors and a flowmeter
RESOLV40.
RESOLWMZ-M1 ord. no.: 135 303 00
RESOLWMZ-M1 full kit 1-06
incl. 2 sensors Pt1000 (2 x FRP45), plug-in power supply
and a flowmeterV40-0,6
ord. no.: 135 302 60
RESOLWMZ-M1 full kit 2-15
like above,but with flowmeterV40-1,5
ord. no.: 135 302 70
FlowmeterV40
Order indication:
RESOL Refractometer-set
280 009 60
RESOLTest-set
Test-Set with 2 measuring instruments for specific gravity
(suitable forTYFOCOR®L and LS) Floor stand cylinder and
100pH indicatorpapers for re-checkof cold-and corrosion
protection of the heating medium.
280 009 70
RESOL DHA 125
Measuring instrument (specific gravity)
286 000 50
Accessory:
For determining the proportion of the mixture glycol-water

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
1.2 Electrical connection
For the use of the RESOL WMZ-M1 connected to the
volumetric flowmeterV40 the following connections have to
be made (the connections are independent of the polarity):
lanimreT noitpircseD
2/1 V21ylppusrewop-ni-gulP ro ehtotnoitcennoc-sub
rellortnoc
4/3seludomrehtruffonoitcennocrofnoi
tcennoc-sublellaraP
6/5rrosneserutarepmetwolF
8/7rosneserutarepmetnruteR
01/9))tupnieslupmi(04VLOSERretemwo
lF
21/11deipuccoton
1.1 Flowmeter
For determining the volume flow in the heating circuit a
Flowmeter RESOL V40 is used.
For the installation you have to consider the flow direction
(right direction is mentioned on the flow meter).To reduce
the flow an inlet and outflow zone of the length of at least
30 cm needs to be installed.
Note:
The variantsV40 0,6 to 2,5 allow a horizontal and vertical
installation.The variantsV40 3,5 to 6,5 may only be installed
horizontally.
To avoid pressure surge of cavitation in hydraulic
constructions it is advised to fill up the system in a cold
state and the use of de-aerator. In a long view, pressure
surge and turbulent flow will lead to the demolition of the
sensitive system’s measuring instruments.

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
2. Sensor types
As the measuring has to be as exactly as possible to collect
the heat amount, one uses in combination with the
WMZ-M1 exclusively precision platinum sensors (Pt1000
model). The arrangement of the sensors is of great
importance to the total efficiency of the regulator.The
collector temperature should be measured in the upper part
of the collector.In stores with integral heat exchanger,the
sensor must be directly mounted in the upper part of the
heat exchanger.When using external heat exchangers,the
sensor must be fixed at the bottom of the store. For indi-
vidual operation systems, our product range contains 3 dif-
ferent types of sensors (sensors for installation in existing
immersion sleeves, flatscrew sensors or cylindrical clip-on
sensors).The sensor types FK and FR have the same
electrical features and are available in the same models,
They only differ in the connecting cable:
Immersion sensors: in different lengths (immersion
depth) available
FRP45: 45 mm immersion depth, immersion sleeves of
chromium-plated brass, it is included in the full kit.
FK...150: 150 mm immersion depth, immersion sleeve of
chromium-plated copper
Important:The sensors must be completely pushed into
the sleeve and the nut must be slightly tightenend.
Cylindrical clip-on sensors:for any pipe diameter;cpl. with
fastening collar; FK...21 or FR...21
Ensure good thermal contact of the sensor with the pipe
work by cleaning the contact area and by applying heat
conduction paste between sensor and pipe. In order to
protect the sensor cable against outside temperature
influences, it is recommended to insulate the pipe.
Flatscrew sensors: for installation on flat surfaces
FK...9 or FR...9
Ensure good thermal contact. Use conduction paste and
insulatethe sensors againstoutside temperature influences.
FK: 1,5 m weather- and temperature resistant silicone cable
for temperatures between -50 °C ... +180 °C, mostly used for
collectors.
FR: 2,5 m PVC cable for tempertures between
-5 °C ... +80 °C, mostly used for stores.
Make sure that all electrical works are carried out according
to the relevant local and IEE-regulations.The sensor cables
carry low voltages and they must not run together in a
cable conduit with cables carrying higher voltages than 50
Volts.When using longer cables or cable conduits, please
use screened cables.The sensor cables can be lengthened
up to 100 m, but the cross section must be 1,5 mm² (or
0,75 mm² up to a cable length of 50m); screened cables
should be used preferably.The sensors must not be in direct
contact with water,please always use immersion sleeves.

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
4. Function For the calculation of the quantity of transferred heat the
calorimeter RESOL WMZ-M1 takes into account the
dependence of temperature and mixing proportion (used
of limited values) of the specific heat capacity c and the
specific gravity r.With these parameters, the measurement
of the feed and return flow temperatures by two precision-
temperature sensors and the treatment of the pulses of a
volumetric flowmeter,theWMZ-M1 calculates the
Refractometer
Take a drop of the heating medium out of the heating circuit
and spread it on the Refractometer.The The glycol’s
concentration can be taken from the scale.
3. Determination of the proportion of the mixture water - glycol
As the heat capacity of the heat transfer liquid depends on
the concentration of glycol, at first the proportion of the
mixture glycol - water has to be determined.
• If the volumes of water and glycol in the system are known,
the value in % can be calculated:
Vol % = (VG :(VW +VG)) x 100
VG:volume of the glycol
VW: volume of the water
Example: if in the solar circuit 15 liters of water and 20 liters
of glycol are present, then follows:
Vol % = (20 : (15 + 20)) x 100) = 57
Determination of the concentration at unknown
volume:
RESOL DHA125 or Prüfset:
To analyse the system you have to withdraw a little liquid
from the heating circuit and fill it into the measuring glass.
With the measuring spindle the concetration of the liquid
can be determined which can be converted into the mixing
ratio with the aid of the table.
(When using ready mixed fluids pay attention to manufacturers instructions)
Test-set with high precision refractometer for accurate
definition of the propylene-ethylene-glycol-proportion in the
heating medium of the solar heating system.
Additional scale for battery acid.

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
TheWMZ-M1 disposes of two levels of indication.In the first
level you can change between the different channels of
indication by means of the pushbuttons. For the adjustment
and control of installation parameters a change into the se-
cond indication level must be effected:
1.Press both knobs at the same time(appr.2 sec.).
2.The second level is indicated by flashing of theTVL-LED.
Channel n appears on the screen.
3. Choose the required channel with the knobs.
4. Press again the 2 knobs at the same time (appr.2 sec., a
point appears on the indication of the channel).
5.Adjust the required values.
6. Confirmation of the values by pressing again the 2 knobs
simultaneously (the point disappears).
Thenew values arealsomemorised and remainmemorised
also after interruption of the current.
Important: the unit has a (so called) time-out function.
After 10 seconds without any new indication the screen
returns to the first indication level (Q/Wh), the new values
are not memorised.
5. Operation
transferred quantity of heat as follows:
∆∆
∆∆
∆Q =Vi • ρρ
ρρ
ρ• c •
∆∆
∆∆
∆T
Vi : volume per impulse of the flowmeter
ρ:specific gravity of the heat transfer liquid
c: specific heat capacity of the heat transfer liquid
The calorimeter can be used in systems that use water or a
mixture of water and propylene-glycol as heat transfer li-
quid.Thefraction (invol %)in asystem andthespecifications
of the chosen volumetric flowmeter (in litres per impulse)
are regulated after installation in place (see 4.3 Regulation
ofthe system parameters).

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
6.2 Heat amount
Bymoving intothesecond levelthe versionnumberisalways
indicated. At first the following regulations have to be made
orcontrolled:
6. Indication and adjusting channels
•TVL = Flow temperature (°C)
•TRL = Return temperature (°C)
•V = Volume flow (m3/h)
•P = Power (kW)
• Q (Wh) = Heat quantity (Wh)
• Q (kWh) = Heat quantity (kWh)
• Q (MWh) = Heat quantity (MWh)
•= Failure report
6.1Type of flowmeter
This channel shows the type of the used flowmeter.Factory
setting is 2 (RESOL FlowmeterV40).
Do not change the factory settings!
Setting 1 is reserved for future flowmeters.
•n = Version number
•b = Type of flowmeter
•A= Heat quantity in kWh
(chanel for deleating the summed up heat
quantity)
•L = Impulse rate in l/Imp
•F = Mixing proportion inVol%
•G= Type of glycol
•I = Individual adress for operation of severalWMZ at
one Bus
•S = Individual transmission of all values to a PC or
data logger
Adjusting channelsIndication channels
The totalised amount of heat can be reset.This is done in
more than one step.
1.Push both knobs at the same time.
2.After appr. 2 seconds the display changes to the
indicationlevel (theuppercontrol lighton theleft flashes).
3. Choose channel A by pushing the knobs up- or
downwards.
4. Independent of the totalised quantity of heat the
indication R- always appears here.
5.Keep both knobs pushed in for appr.2 seconds.On the
display R.00 appears now.
6. Push once more both knobs, until the decimal point
flashes.
So the memorised value of the heat quantity Q is set at
zero, a new calculation starts when using the meter again.

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
Adjusting chanel for volume per impulse, depending on the
chosen type of flowmeter in channel b.
adjustment range 1 ...99 l/Imp
Factory setting 1 l/Imp
Notice:
Pay attention to the indicated l/Imp on your
flowmeter
proportion of the mixture water/glycol
regulation range: 0...70 vol. %
regulation ex works 40 %
Notice:
When using water (G = 0) or Tyfocor®LS (G = 3) a
predetermined value is given (see also 6.4).
6.3 Rate of impulse
6.4 Proportion of the mixture water/glycol in vol %
Adjustment chanel for the used type of glycol
0 for water
1 for propylene glycol
2for ethylene glycol
3 forTyfocor LS
factory setting 1
6.5Type of glycol

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
With this channel an individual module-address for the
WMZ-M1 can be set.In this way it is possible to use more
than one calorimeter with each his own address in one
system.
The value can be set between 0 and 15 (factory setting 0).
When connecting more than one (max. 15) WMZ-M1 at
one PC or data logger (max. 15), the numeric firstWMZ
has to be set on I=0, the second I=1, the third I=2 etc.
Notice:
When using more then one WMZ-M1 pay attention to
channel S.
Setting between 0 and 2 (0 ex factory)
Do not change the factory setting, if the WMZ-M1 is
connected to a RESOL-regulator withV-Bus.
IftheWMZ-M1is notconnected toa controlerbutacutated
with the enclosed power supply and the data is recorded
on a PC or data logger, channel S has to be set on 1
(automatical sending).
When connecting more than oneWMZ-M1 at one PC or
data logger, the numeric first WMZ has to be adjusted on
S=1 (automatical sending) and the other modules on S=2
(cascadesdsending) for avoidinga coallison ofinformations.
Notice:
When connecting more than one WMZ-M1 pay attention
to channel I.
6.6 Individual module-address for using more than oneWMZ with one Bus
6.7 Self contained transmission of all values to a PC or data logger

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Calorinmeter for heating systems with
water-glycol mixtures
Mounting and operating instructions
°C Ω °C Ω
-10 961 55 1213
-5 980 60 1232
0 1000 65 1252
5 1019 70 1271
10 1039 75 1290
15 1058 80 1309
20 1078 85 1328
25 1097 90 1347
30 1117 95 1366
35 1136 100 1385
40 1155 105 1404
45 1175 110 1423
50 1194 115 1442
°C Ω °C Ω
-10 961 55 1213
-5 980 60 1232
0 1000 65 1252
5 1019 70 1271
10 1039 75 1290
15 1058 80 1309
20 1078 85 1328
25 1097 90 1347
30 1117 95 1366
35 1136 100 1385
40 1155 105 1404
45 1175 110 1423
50 1194 115 1442
7.Tips for fault location Please check the following points if the calorimeter RESOL
WMZ-M1 does not work faultlessly:
1. Power supply
The power supply is guaranteed if an indication appears in
the display.
2.Temperature sensors
Be aware of sensible indications for the feed and return
flow temperatures. Faults of the sensors are indicated by
lighting of the yellow error control lamp. On the display
the error is indicated by the following error codes:
E - 0 = there is no error
E - 1 = error in the feed flow temperature sensor
E - 2 = error in the return flow temperature sensor
E - 3 = error in the temperature sensors 1 and 2
E - 4 = negative DT and volumetric flow > 0 (e.g. feed and
return flow temperature sensors changed).
After selection of the measuring point the kind of error is
indicated on the display as follows:
Broken sensor cable:
888
Short-circuit in the sensor cable:
-88.
In case of a malfunction of a sensor the resistance values
can be checked. Sensors that are not connected have
resistance values as indicated in the table, they can be
checked with a resistance meter.
Resistance of Pt1000 sensors in
function of the temperature
Notes
Design and specifications are subject to change without notice.
Illustrations may differ slightly from production models.