Resol WMZ User manual

*11205045* 11205045
Manual
www.resol.com
en-US/CA
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual safe.
Energy metering module
Manual for the
specialized craftsman
Mounting
Connection
Operation
WMZ

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© 20160929_11205045_WMZ_115V.monus.indd
Safety advice
Please read the following information carefully before installing and operating the
controller. In this way damage to the solar system caused by wrong installation will
be avoided. Please make sure that the mounting is adapted to the characteristics
of the building, that the local regulations are respected and is conform with the
technical rules.
Instructions
Attention should be paid to
• Valid national and local standards and regulations
• Respective valid standards and directives
Equipment to be installed and used in accordance with the rules of the National
Electrical Code (NEC) or with Canadian Electrical Code (CEC), Part I.
These instructions are exclusively addressed to authorized skilled personnel.
• Only qualied electricians should carry out installation and maintenance work.
• Initial installation should be carried out by qualied personnel
Information about the product
Proper usage
The WMZ is to be used for the measurement and the display of heat quantity and
other system data in compliance with the technical data specied in this manual.
Improper use excludes all liability claims.
CE Declaration of conformity
The product complies with the relevant directives and is therefore
labelled with the CE mark.The Declaration of Conformity is available
upon request, please contact the manufacturer.
Note:
Strong electromagnetic elds can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic elds.
Target group
These instructions are exclusively addressed to authorised skilled personnel.
Only qualied electricians should carry out electrical works.
Initial installation must be effected by the system owner or qualied personnel
named by the system owner.
Description of symbols
WARNING! Warnings are indicated with a warning triangle!
ÎThey contain information on how to avoid the danger
described.
Signal words describe the danger that may occur, when it is not avoided.
• WARNING means that injury, possibly life-threatening injury, can occur.
• ATTENTION means that damage to the appliance can occur.
Note:
Notes are indicated with an information symbol.
ÎArrows indicate instruction steps that should be carried out.
Disposal
• Dispose of the packaging in an environmentally sound manner.
• Dispose of old appliances in an environmentally sound manner. Upon request we
will take back your old appliances bought from us and guarantee an environmen-
tally sound disposal of the devices.
Subject to technical change. Errors excepted.

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WMZ energy metering module
Universal energy metering module for solar and heating systems. Graphic display
for indication of ow and return temperatures, energy yield output, ow rate and
errors (balances are also stored in the case of a power failure). Suited for systems
with water/glycol mixtures of 0… 70 Vol %.
Contents
1 Installation ...........................................................................................5
1.1 Mounting........................................................................................................................5
1.2 Electrical connection...................................................................................................5
1.3 Flowmeter .....................................................................................................................6
2 Operation and function ......................................................................7
2.1 Push buttons for adjustment.....................................................................................7
2.2 Graphic display .............................................................................................................7
2.3 LED ashing codes.......................................................................................................7
3 Determining the ratio of the glycol-water mixture.........................7
4 Commissioning....................................................................................8
5 Function ...............................................................................................9
6 Indication and adjustment channels..................................................9
7 Examples of connection....................................................................12
7.1 WMZ module in individual operation mode.......................................................12
7.2 WMZ with controller...............................................................................................12
7.3 Cascade without controller.....................................................................................12
7.4 Cascade with controller...........................................................................................13
8 Accessory ...........................................................................................13
9 Troubleshooting.................................................................................14

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Overview
• yield control
• increase in efciency
• graphic display
• power failure protection
• user-friendly through easy mounting
• easy-to-mount housing in outstanding design
104 mm
4.1"
130 mm
5.1“
2.6"
66 mm
4.3"
110 mm
6.8"
172 mm
1.1"
28 mm
0.4" / 11 mm
1.9" / 49 mm
0.5" / 13 mm
6.1" / 155 mm
upper fastening
lower fastening
Technical data
Inputs: 2 inputs for Pt1000 temperature sensors, 1 V40
Measurement precision: ± 0.3 K [0.6°Ra]
Range of measurement: -22 … +302 °F [-30 … +150 °C]
Power supply: 115 V~
Supply connection: type Y attachment
Power consumption: ca. 2 VA
Data interface: RESOL VBus®
VBus®current supply: 35 mA
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Display: Graphic display as well as bicolored LED
Operation: 3 push buttons in the front
Protection type: IP 20 / DIN EN 60529
Protection class: II
Ambient temp.: 32 … 104 °F [0 … 40 °C]
Degree of pollution: 2
Dimensions: 6.8’’ × 4.3’’ × 1.9’’ [172 x 110 x 46 mm]

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1 Installation
1.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the controller from power supply
before opening the housing!
Note:
Strong electromagnetic elds can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic elds.
The unit must only be located in dry interior rooms.
The device must additionally be supplied from a double pole switch with contact
gap of at least 3 mm [0.12”].
Please pay attention to separate routing of sensor cables and power supply cables.
In order to mount the device to the wall, carry out the following steps:
ÎUnscrew the crosshead screw from the cover and remove it along with the
cover from the housing.
ÎMark the upper fastening point on the wall. Drill and fasten the enclosed wall
plug and screw leaving the head protruding.
ÎHang the housing from the upper fastening point and mark the lower fastening
points (centers 150 mm [5.9”]).
ÎInsert lower wall plugs.
ÎFasten the housing to the wall with the lower fastening screw and tighten.
ÎCarry out the electrical wiring in accordance with the terminal allocation (see
chap. 1.2).
ÎPut the cover on the housing.
ÎAttach with the fastening screw.
display
push button
fuse T0.8A
cable conduits
with strain relief
cover
1.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the controller from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic
components!
ÎTake care to discharge properly before touching
the inside of the device!To do so, touch a grounded
surface such as a radiator or tap!
Note:
Connecting the device to the power supply must always be the last step
of the installation!
The power supply of the controller must be carried out via an external power
supply (last step!).The supply voltage must be 115 Volt (50 … 60 Hz). Flexible ca-
bles are to be attached to the housing using the enclosed strain reliefs and the
respective screws.

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1.3 Flowmeter
A owmeter RESOL V40 is used in order to determine the volumetric ow rate
in the solar circuit. The installation is to be carried out taking the ow direction
into consideration (consider direction indication on the owmeter). In order to
tranquilize the ow ratio, an inlet and an outlet distance of 30 cm in front of and
behind the owmeter have to be taken into account.
Note:
Versions V40 0.6 to 2.5 are suited for horizontal as well as for vertical
installation.Versions V40 3.5 to 15 are for horizontal installation only. In
order to avoid a pressure surge caused by cavitation in hydronic systems,
the heat transfer uid should be lled in when it is cold, and de-aerators
should be used. Pressure surge and turbulent ow ratios lead to damage
of the sensitive measuring instruments.
In order to use the RESOL WMZ along with a owmeter RESOL V40, the following
connection is to be carried out (polarity of the separate terminals is arbitrary):
1 / 2 = sensor S1 (ow temperature)
3 /4 = sensor S2 (return temperature)
5 / 6 = owmeter V40
9 / 10 = RESOL VBus®
The power supply connection is carried out via the terminals:
19 = neutral conductor N
20 = line L
12 / 13 / 14 = protective conductor ⏚
protective
conductor
power supply
terminals
sensor terminals RESOL VBus®
fuse

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2 Operation and function
2.1 Push buttons for adjustment
1
3
2
backward (-) forward (+)
OK
(selection / adjustment)
The WMZ is operated by 3 push buttons below the display.The forward-key (1)
is used for scrolling forward through the indication menu or to increase the ad-
justment values.The backward-key (2) is used for scrolling backwards through the
menu or to decrease adjustment values.
In order to change from the display level to the adjustment level, briey press
button 3.The indication changes to the adjustment mode.
ÎSelect channel with buttons 1 and 2
ÎBriey press button 3.
ÎAdjust value with the buttons 1 and 2
ÎBriey press button 3. Answer the safety prompt “Save ?“ with “yes“ oder “no“
(select with buttons 1 and 2) and conrm with button 3.
In order to get back to the display level, select the item “back“, and briey press
button 2.
Adjust. values:
back
Reset balance
Antifr. type Water
Safety prompt:
Save? Ye s
2.2 Graphic display
FL
RE
15 kWh
Heat
85,6 °C
45,7 °C
The WMZ has two display levels. In the 1st level, the heat quantity as well as ow
and return temperatures are shown. Furthermore, it contains a system screen.
System screen: in the system screen, the system scheme and the sensors used are
shown.
The 2nd level is the adjustment level in which various parameters and values can
be adjusted.
2.3 LED ashing codes
constant green: everything OK
ashing red: sensor fault
3 Determining the ratio of the glycol-water mixture
(when using ready mixed uids, pay attention to manufacturers‘ instructions)
Since the heat capacity of the heat transfer uid depends on the concentration
of glycol, the proportion of the glycol/water-mixture has to be determined rst.
Determining the ratio for known volumes:
If the volumes of water and glycol in the system are known, the value in vol. % is
calculated as follows:
Vol % = (VG : (VW + VG)) x 100
VG: volume of glycol
VW: volume of water

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Example: if 15 liters of water and 20 liters of glycol are used in the solar circuit,
then follows:
Vol % = (20 : (15 + 20)) x 100 = 57
Determining the ratio for unknown volumes:
RESOL refractomter:
In order to analyze the system, a small amount of uid has to be withdrawn from
the solar circuit and applied to the prism surface of the refractometer. Hold the
pointy end against the light and turn the ocular until the borderlines become visi-
ble.The borderlines indicate the freezing temperature. In a table on the receptacle
of the heat transfer uid, the value for the vol.-% corresponding to the tempera-
ture value, is shown.
4 Commissioning
When the RESOL WMZ calorimeter is commissioned for the rst time or after a
reset, it will run a commissioning menu. The commissioning menu leads the user
through the most important adjustment channels needed.
Commissioning:
Version x.xx
Language English
Temp. unit °C
Commissioning menu
The commissioning menu consists of the
channels described in the following.
At the top of the commissioning menu,
the version number of the device is in-
dicated.
Commissioning:
Language English
Temp. unit °C
Flow unit Litres/hour
Language
Selection: Deutsch, English, Francais, Ital-
iano, Espanol
Factory setting: Deutsch
ÎAdjust the desired menu language.
Commissioning:
Temp. unit °C
Flow unit Litres/hour
Energy unit kWh
Temp. unit
Selection: °C, °F
Factory setting:°C
ÎAdjust the desired temeprature unit.
Commissioning:
Flow unit Litres/hour
Energy unit kWh
Antifr. type Water
Flow unit
Selection: Litres/hour, Gal./minute
Factory setting: Litres/hour
ÎAdjust the desired ow rate unit.
Commissioning:
Energy unit kWh
Antifr. type Water
Antifreeze 40 %
Energy unit
Selection: kWh, BTU
Factory setting: kWh
ÎAdjust the desired energy unit.
Commissioning:
Energy unit kWh
Antifr. type Water
Antifreeze 40 %
Antifr. type
Selection:Water, Propylene, Ethylene,
Tyfo LS
Factory setting:Water
ÎAdjust the heat transfer uid used in
the system.
Commissioning:
Antifr. type Propylene
Antifreeze 40 %
Volume/Imp. 1.0 L/I
Antifreeze
Adjustment range: 20 … 70 %
Factory setting: 40 %
Available only if Antifr. type is set to Pro-
pylene or Ethylene.
ÎAdjust the antifreeze ratio of the
heat transfer uid used in the
system.
Commissioning:
Antifr. type Propylene
Antifreeze 40 %
Volume/Imp. 1.0 L/I
Volume/Imp.
Adjustment range: 0.1 … 99.9 L/I
Factory setting: 1.0 L/I
ÎAdjust the impulse rate of the
owmeter or ow rate sensor
respectively.

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Commissioning:
Antifreeze 40 %
Volume/Imp. 1.0 L/I
Save
Completing the commissioning menu:
When the last menu item of the commissioning menu (Save) has been selected, a
security inquiry appears. If the inquiry is conrmed, the adjustments will be saved.
All adjustments made during commissioning can, if necessary, be changed later on
in the corresponding menus.
5 Function
During the calculation of the transferred heat quantity, the calorimeter RESOL
WMZ takes into account that the specic heat capacity c and the density rdepend
on the temperature and the mixing proportion (access to limited values). Using
these parameters, the measurement of the ow and return temperatures with two
precision temperature sensors, and the evaluation of the impulses of a volumetric
owmeter, the WMZ calculates the transferred quantity.
This device can be used in systems which use water or water-propylene glycol
mixtures as the heat transfer uid. The proportion (in vol%) used in a system and
the specication of the selected owmeter (in liters per impulse) are adjusted
locally after the installation.
6 Indication and adjustment channels
Display channels
• FL (ow temperature in °C / °F)
• RE (return temperature in °C / °F)
• heat quantity (in Wh / MBTU or
kWh / MMBTU respectively)
• volumetric ow rate (in l/min or gpm)
• power (in kW)
Adjustment channels
• antifreeze type
• antifreeze
• ow measurement (V40 or VTP)
• volume per impulse
• subaddress
• bus mode
• bus master
• sensor offset
• language
• temperature unit
• ow rate unit
• energy unit
Safety prompt:
Save? Ye s
Note:
After a change in the adjustment channel has been made, a safety prompt
appears. The adjustment is saved after the question has been conrmed
with “yes“.
Heat quantity
FL
RE
15 kWh
Heat
85,6 °C
45,7 °C
The determined heat quantity is indicated. If the heat quantity is smaller than 1
MWh, the quantity is indicated with the unit Wh (MBTU). If the quantity is larger,
it is indicated using the unit kWh (MMBTU).
Note:
When the indication has reached 999,999 kWh (3412.138 MMBTU), it
will start again at 0.
Flow and return temperatures
FL
RE
15 kWh
Heat
85,6 °C
45,7 °C
FL = indicates the current ow temperature (example: 85.6 °C)
RE = indicates the current return temperature (example: 45.7 °C)
Volumetric ow rate
FL
RE
200 l/h
Flow
85,6 °C
45,7 °C
The volumetric ow rate is indicated (l/h or gpm).

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Power
FL
RE
9.30 kW
Power
85,6 °C
45,7 °C
The current power is indicated (in kW).
Note:
The precision of the power indication depends on the owmeter used. At
low ow rates, deviations from the actual value are possible and caused
by technical reasons!
Reset balance
Adjust. values:
back
Reset balance
Antifr. type Water
All balance values will be reset to 0.
Antifreeze type
Adjust. values:
back
Antifr. type Water
Flow measurem. V40
Adjustment channel for the antifreeze type used.There are different types of heat
tranfer uid to choose from. Water or water / glycol mixtures are used:
• water
• propylene
• ethylene
• Tyfo LS
Antifreeze
Adjust. values
back
Antifr. type Propylene
Antifreeze 40 %
Adjustment channel for the ratio of water / glycol (“antifreeze“ is only visible, when
the antifreeze type “propylene“ or “glycol“ has been selected before).
ajdustment range: 20 % …70 vol. %
factory setting: 40 %
Type of owmeter
Adjust. values:
back
Antifr. type Water
Flow measurem. V40
Adjustment channel for the owmeter type which is used. The factory setting is
RESOL V40 owmeter.
• V40
• VTP
Impulse rate
Adjust. values:
Antifr. type Water
Flow. measurem. V40
Volume/Imp. 1,0 L/I
This adjustment channel depends on the selected owmeter type.
If the owmeter V40 is used, the value is indicated in L/I (“Volume/Imp“ is indicated
on the display).
adjustment range: 0.1 … 99.9 L/I
If the owmeter type VTP is used, the value is indicated in I/L (“heat“ appears on
the display)
adjustment range: 1 … 2000 I/L
Note:
Pay attention to the indicated l/Imp on your owmeter!

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Subaddress
Adjust. values:
Flow measurem. V40
Volume/Imp. 1,0 L/I
Subaddress 0
Adjustment of the subaddress. An individual module address for oneWMZ can be
adjusted.This way it is possible to use several WMZ with an individual address in
one system. If severalWMZ (up to max. 16) are connected to a PC or a datalogger,
the calorimeters have to be numbered serially, starting with 0. The connection
sequence at the VBus®is arbitrary.
adjustment range: 0 … 15
Bus mode
Adjust. values:
Volume/Imp. 1,0 L/I
Subaddress 0
Bus mode Cascaded
Change of the bus mode: active, passive, or cascaded.
Do not change the factory setting if the WMZ is connected to a RESOL controller
with VBus® output terminal (corresponds to the bus mode “passive“).
Select bus mode “active“, if the WMZ is not connected to a controller and if data
are recorded on a PC or datalogger.
Select bus mode “cascaded“, if several WMZ are connected to a PC or datalogger.
The WMZ modules are linearily numerated starting with 0.
• active
• passive
• cascaded
Bus master
Adjust. values:
Subaddress 0
Bus mode Cascaded
Bus master? Ye s
The item “bus master“ only appears when subadress “0“ and bus mode “cascaded“
have been selected.
Select bus master “No“ when several WMZ modules are cascaded and used along
with a controller.
Select bus master “Yes“ when several WMZ modules are cascaded and used with-
out a controller..
Sensor offset
Adjust. values:
Bus master? Ye s
Sensor 1 0,0 K
Sensor 2 0,0 K
In order to offset the sensors, an individual offset can be allocated to each sensor
(range -5.0 K …+5.0 K, in steps of 0.1 K).
Language
Adjust. values:
Bus mode Cascaded
Language English
Temp. unit °C
Selection of the language
• Deutsch
• English
• Francais
• Italiano
• Espanol

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Temp. unit
Adjust. values:
Language English
Temp. unit °C
Flow unit Litres/hour
Selection of the temperature unit for display indication (°C or °F).
Flow unit
Adjust. values:
Temp. unit °C
Flow unit Litres/hour
Energy unit kWh
Selection of the ow rate unit for display indication (Litres /hour or Gal. / minute).
Energy unit
Adjust. values:
Flow unit Litres/hour
Energy unit kWh
Reset
Selection of the energy unit for display indication (kWh or BTU).
Reset
Adjust. values:
Energy unit kWh
Reset
Version x.xx
A reset will delete all previously made adjustments and set all balance values back
to 0.The device starts up again with the commissioning menu.
Version
Adjust. values:
Energy unit kWh
Reset
Version x.xx
Below the last menu item, the version number of the device is indicated.
7 Examples of connection
7.1 WMZ module in individual operation mode
• WMZ: master board
subaddress: “0“
bus mode: “active“
7.2 WMZ with controller
• controller: register WMZ module
• WMZ: slave board
subaddress: “0“
bus mode: “passive“
7.3 Cascade without controller
• WMZ 0: master board
subaddress “0“
bus mode: “Cascaded“
bus master: “Yes“
• WMZ 1 …15: slave board
subaddress: 1 … 15*
bus mode: “Cascaded“
The connection sequence at the VBus®is arbitrary.

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7.4 Cascade with controller
WMZ 0
• controller: No adjustments have to be made (WMZ-module must
not be registered!)
• WMZ 0: slave board
subaddress: “0“
bus mode: “cascaded“
bus master: “No“
• WMZ 1 …15: Slave board
subaddress: 1 … 15*
bus mode: “Cascaded“
The connection sequence at the VBus®is arbitrary.
* The maximum number of cascaded WMZ modules is 16. Whether this number
can be reached depends on the construction.
Disturbing factors can be the following: distances, voltage- carrying lines etc.
8 Accessory
VBus®board
WARNING! When the WMZ is connected to a controller, the VBus®
master board has to be replaced with the VBus®slave board!
When several WMZ are cascaded and connected to a data-
logger or PC (see p. 10), only the VBus®master boards of the
WMZs with the subaddress 1 or higher have to be replaced with
the VBus®slave boards!
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the controller from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic
components!
ÎTake care to discharge properly before touching
the inside of the device!To do so, touch a grounded
surface such as a radiator or tap!
123
ÎUnscrew the cross-head screw of the cover and remove the cover from the
housing.
ÎUnscrew the two lateral srews of the transparent shield and remove the shield.
ÎPull out the board which has to be replaced carefully.Replace with new board.
Carry out assembly in reverse order.
RESOL refractometer set
For determining the concentration of glycol in the heat transfer medium
280 009 60

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9 Troubleshooting
Please pay attention to the following items, if the calorimeter WMZ is not working
properly.
fuse T0,8A
Operating control lamp ashes red.
Sensor defect.An error code instead of a temperature is shown in the corre-
sponding sensor indication channel.
- 88.8888.8
Line is broken. Check the line. Short circuit. Check the line.
Pt1000 temperature sensors branched off can be checked with an ohmmeter.
In the table shown below, the resistance values corresponding to different tem-
peratures are listed.
Operating control lamp off.
Check the power supply. Is it disconnected?
no yes
The fuse of the device could be
blown. It can be replaced after the
front cover has been removed (spare
fuse is enclosed in the accessory bag).
Check the supply line and recon-
nect it.
°C °F Ω°C °F Ω
-10 14 961 55 131 1213
-5 23 980 60 140 1232
0 32 1000 65 149 1252
5 41 1019 70 158 1271
10 50 1039 75 167 1290
15 59 1058 80 176 1309
20 68 1078 85 185 1328
25 77 1097 90 194 1347
30 86 1117 95 203 1366
35 95 1136 100 212 1385
40 104 1155 105 221 1404
45 113 1175 110 230 1423
50 122 1194 115 239 1442
Resistance values of the Pt1000-sensors

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Distributed by: RESOL – Elektronische Regelungen GmbH
Heiskampstraße 10
45527 Hattingen / Germany
Tel.: [phone] / 96 48 - 0
Fax: [phone] / 96 48 - 755
www.resol.com
[email protected]
Important note
The texts and drawings in this manual are correct to the best of our knowledge.As
faults can never be excluded, please note:
Your own calculations and plans, under consideration of the current standards and
directions should only be basis for your projects.We do not offer a guarantee for
the completeness of the drawings and texts of this manual - they only represent
some examples.They can only be used at your own risk. No liability is assumed for
incorrect, incomplete or false information and / or the resulting damages.
Note
The design and the specications can be changed without notice.
The illustrations may differ from the original product.
Imprint
This mounting- and operation manual including all parts is copyrighted. Another
use outside the copyright requires the approval of RESOL – Elektronische Re-
gelungen GmbH. This especially applies for copies, translations, micro lms and
the storage into electronic systems.
© RESOL – Elektronische Regelungen GmbH