RESOL WMZ
48006100
*48006100*
WMZ
Mounting
Connection
Operation
en-US/CA
Manual
Thank you for buying this RESOL product.
Read this manual carefully to get the best perfomance from this unit
www.resol.com
WMZ
Table of contents
Safety advice..............................................................................................2
Technical data............................................................................................3
1. Installation............................................................................................5
1.1 Mounting..............................................................................................................5
1.2 Electrical connection.........................................................................................5
1.3 Flowmeter............................................................................................................5
2. Operation and function.......................................................................6
2.1 Push buttons for adjustment...........................................................................6
2.2 Graphic display....................................................................................................6
2.3 LED flashing codes.............................................................................................6
3. Determining the ratio of the glycol-water mixture.........................7
4. Function................................................................................................7
Instructions:
5. Indication and adjustment channels..................................................8
Attention should be paid to
5.1 Heat quantity.......................................................................................................8
• Valid national and local standards and
5.2 Flow and return temperatures........................................................................8
regulations
5.3 Volumetric flow rate.........................................................................................8
• Respective valid standards and di5.4 Power....................................................................................................................8
rectives
5.5 Antifreeze type...................................................................................................9
Equipment to be installed and used
5.6 Antifreeze............................................................................................................9
in accordance with the rules of the
5.7 Type of flowmeter..............................................................................................9
National Electrical Code (NEC) or
with Canadian Electrical Code (CEC),
5.8 Impulse Rate........................................................................................................9
Part I. These instructions are exclusi5.9 Subaddress...........................................................................................................9
vely addressed to authorized skilled
5.10 Bus mode.......................................................................................................... 10
personnel.
5.11 Bus master........................................................................................................ 10
• Only qualified electricians should
5.12 Sensor offset.................................................................................................... 10
carry out installation and mainte5.13 Reset.................................................................................................................. 10
nance work.
5.14 Language............................................................................................................ 10
• Initial installation should be carried
6. Examples of connection....................................................................11
out by qualified personnel
6.1 WMZ module in individual operation mode............................................ 11
6.2 WMZ with controller.................................................................................... 11
Subject to technical change. Errors excepted.
6.3 Cascade without controller.......................................................................... 11
6.4 Cascade with controller................................................................................ 11
7. Troubleshooting.................................................................................12
© RESOL 10249 wmz.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.
Please pay attention to the following
safety advice in order to avoid danger
and damage to people and property.
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WMZ
• yield control
• increase in efficiency
• graphic display
• power failure protection
• user-friendly through easy
mounting
• easy-to-mount housing in
outstanding design
© RESOL 10249 wmz.monus.indd
Included:
1 x WMZ
1 x accessory bag
1 x spare fuse T1.25A
2 x screw and wall plug
4 x strain relief and screw
Additionally included in the full kit:
2 x sensor FRP45
1 x flowmeter V40
Technical data
Housing:
plastic, PC-ABS and PMMA
Protection type:
IP 20 / DIN EN 60529
Protection class: I
Ambient temp.:
32 ... 104 °F [0 ... 40 °C]
Dimensions:
6.8“ × 4.3“ × 1.9“
[172 x 110 x 46 mm]
Mounting: wall mounting, mounting
into patch panels is possible
The RESOL WMZ is a 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 heat
transfer fluid depend on the temperature as well as on the mixing ratio of
water/glycol. The calorimeter RESOL
WMZ calculates the heat amount using
these parameters, the measurement
of flow and return temperature by 2
precision temperature sensors and
the evaluation of the impulses of the
flowmeter. A power failure protection
guarantees that the adjusted system
parameters and the calculated heat
quantity are maintained in the case of
power loss. By means of push buttons,
different channels can be chosen and
user levels can be changed. In the first
level, the temperature at the selected
measuring points, the heat gained, the
actual power or the volumetric flow
rate of the system are indicated on
the graphic display. A control lamp is
also installed for indication of sensor
defects and false sensors connections.
A second level is used for displaying
system adjustment values and control
values, which can be analogously adapted to changes in the systems. The
power supply is effected via a power
supply plug. Additional RESOL modules can be connected to a bus connection.The VBus® connection enables
the transmission of display values to a
corresponding RESOL controller, PC
or datalogger in order to be further
processed or evaluated.
Display: Graphic display as well as
bicolored LED
Operation:
3 push buttons in the front
Power supply: 115 V~
Power consumption: ca. 2 VA
Adjustment values:
• Volume concentration of glycol:
0 ... 70 % (1%-steps)
• Pulse rate volumetric flow rate:
0 ... 99 l/Imp (1 l/Imp - steps) for
flowmeter RESOL V40
Temperature measurement:
with RESOL Pt1000 sensors only
Measurement precision: ± 0.3 K
Range of measurement:
-22 ... + 302 °F [-30 ... + 150 °C]
Bus: RESOL VBus®
3|
WMZ
Accessory
RESOL refractometer set
For determining the concentration of glycol in the heat transfer medium
280 009 60
VBus® board
Attention!
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 datalogger 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!
Electrostatic discharge can lead to damage of
electronic components!
Warning
Switch off power supply and disconnect from power supply
before opening the housing!
1.Unscrew the cross-head screw of the cover and re­move
the cover from the housing.
2.Unscrew the two lateral srews of the transparent shield
and remove the shield.
3.Pull out the board which has to be replaced carefully.
Replace with new board.
Carry out assembly in reverse order.
1
2
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3
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WMZ
1.
Installation
1.1 Mounting
display
cover
push button
cable conduits with strain
relief
fuse T1.25 A
upper fastening
lower fastening
1.2 Electrical connection
Warning!
Opening the housing will expose live parts!
ÎÎ Switch off power supply and disconnect
the device from power supply before
opening the housing!
The unit must only be installed
• in a dry interior location
• in a non-hazardous location
• away from electromagnetic fields
The controller must additionally be supplied from a doublepole switch with contact gap of at least 0.12“ [3 mm].
Route sensor cables and power supply cables separately.
ÎÎ Unscrew the cross-head screw from the cover and
remove it along with the cover from the housing
ÎÎ Mark the upper fastening point on the wall and drill
ÎÎ Fasten the enclosed wall plug and screw leaving the
head protruding
ÎÎ Hang the housing from the upper fastening point and
mark the lower fastening point through the hole in the
terminal box (centers 5.1“ [130 mm])
ÎÎ Drill and insert the lower wall plug
ÎÎ Fasten the housing to the wall with lower fastening
screw and tighten
ÎÎ Complete wiring connections in accordance with terminal allocations, see chap. 1.2 “Electrical connection”
ÎÎ Place the cover back onto the housing
ÎÎ Fasten the cover by means of the cross-head screw
Electrostatic discharge can cause damage of electronic components
fuse
Warning: high-voltaged components
WMZ
T1,25A
Netz / Mains
115 V ~
S1
1
S2
2
3
V40
4
5
sensor terminals
VBus
6
9 10
RESOL VBus®
12 13 14
N L
19 20
protective grounding
terminals
power supply
terminals
© RESOL 10249 wmz.monus.indd
1.3 Flowmeter
A flowmeter RESOL V40 is used in order to determine the
volumetric flow rate in the solar circuit.The installation is to
be carried out taking the flow direction into consideration
(consider direction indication on the flowmeter). In order
to tranquilize the flow ratio, an inlet and an outlet distance
of 30 cm in front of and behind the flowmeter have to be
taken into account.
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 cables are to be
attached to the housing using the enclosed strain reliefs and
the respective screws.
In order to use the RESOL WMZ along with a flowmeter
RESOL V40, the following connection is to be carried out
(polarity of the separate terminals is arbitrary):
1 / 2 = sensor S1 (flow temperature)
3 / 4 = sensor S2 (return temperature)
5 / 6 = flowmeter 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 grounding terminals
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
fluid should be filled in when it is cold, and de-aerators should
be used. Pressure surge and turbulent flow ratios lead to
damage of the sensitive measuring instruments.
5|
WMZ
2.
Operation and function
2.1 Push buttons for adjustment
backward (-)
forward (+)
2
3
1
OK
(selection / adjustment)
Adjust. values:
back
Antifr. type
Flow measurem.
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 adjustment 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, briefly press button 3. The indication changes to the
adjustment mode.
• Select channel with buttons 1 and 2
• Briefly press button 3.
• Adjust value with the buttons 1 and 2
• Briefly press button 3. Answer the safety prompt “Save ?“
with “yes“ oder “no“ (select with buttons 1 and 2) and
confirm with button 3.
In order to get back to the display level, select the item
“back“, and briefly press button 2.
Water
V40
Safety prompt:
Save?
Yes
2.2 Graphic display
15 kWh
FL
RE
constant green: everything OK
flashing green: sensor fault
(sensor symbol is flashing quickly)
© RESOL 10249 wmz.monus.indd
2.3 LED flashing codes
Heat
85,6 °C
45,7 °C
The WMZ has two display levels. In the 1st level, the heat
quantity as well as flow 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.
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WMZ
3.
Determining the ratio of the
glycol-water mixture
(when using ready mixed fluids, pay attention to
manufacturers‘ instructions)
Since the heat capacity of the heat transfer fluid depends
on the concentration of glycol, the proportion of the glycol/
water-mixture has to be determined first.
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
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 fluid 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 visible.
The borderlines indicate the freezing temperature. In a table
on the receptacle of the heat transfer fluid, the value for the
vol.-% corresponding to the temperature value, is shown.
RESOL DHA125:
In order to analyze the system, a small amount of fluid has
to be withdrawn from the solar circuit and filled into the
measuring glass. With the measuring spindle, the density of
the fluid can be determined which is converted into the
mixing ratio with the aid of the table.
© RESOL 10249 wmz.monus.indd
4.
Function
During the calculation of the transferred heat quantity, the
calorimeter RESOL WMZ takes into account that the specific
heat capacity c and the density r depend on the temperature
and the mixing proportion (access to limited values). Using
these parameters, the measurement of the flow and return
temperatures with two precision temperature sensors, and
the evaluation of the impulses of a volumetric flowmeter,
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 fluid.
The proportion (in vol%) used in a system and the specification of the selected flowmeter (in liters per impulse) are
adjusted locally after the installation.
7|
WMZ
5.
Indication and adjustment channels
Display channels
• FL (flow temperature in °C)
• RE (return temperature in °C)
• heat quantity (in Wh or kWh respectively)
• volumetric flow rate
• power (in kW)
Safety prompt:
Save?
Yes
Adjustment channels
• antifreeze type
• antifreeze
• flow measurement (V40 or VTP)
• volume per impulse
• subaddress
• bus mode
• bus master
• sensor offset
• reset
• language
Note:
After a change in the adjustment channel has been made,
a safety prompt appears. The adjustment is saved after the
question has been confirmed with “yes“.
5.1 Heat quantity
15 kWh
Heat
85,6 °C
45,7 °C
FL
RE
The determined heat quantity is indicated. If the heat quantity
is smaller than 1 MWh, the quantity is indicated with the unit
Wh. If the quantity is larger, it is indicated using the unit kWh.
5.2 Flow and return temperatures
15 kWh
Heat
85,6 °C
45,7 °C
FL
RE
FL = indicates the current flow temperature
(example: 85.6 °C)
RE = indicates the current return temperature
(example: 45.7 °C)
5.3 Volumetric flow rate
200 l/h
Flow
85,6 °C
45,7 °C
5.4 Power
9.30 kW
FL
RE
|8
Power
85,6 °C
45,7 °C
The current power is indicated (in kW).
Note:
The precision of the power indication depends on the
flowmeter used. At low flow rates, deviations from the
actual value are possible and caused by technical reasons!
© RESOL 10249 wmz.monus.indd
FL
RE
The volumetric flow rate is indicated (l/h).
WMZ
5.5 Antifreeze type
Adjust. values:
back
Antifr. type
Flow measurem.
Water
V40
Adjustment channel for the antifreeze type used. There are
different types of heat tranfer fluid to choose from. Water
or water / glycol mixtures are used:
• water
• propylene
• ethylene
• Tyfo LS
5.6 Antifreeze
Adjust. values
back
Antifr. type
Antifreeze
Propylene
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 %
5.7 Type of flowmeter
Adjust. values:
back
Antifr. type
Flow measurem.
Water
V40
Adjustment channel for the flowmeter type which is used.
The factory setting is RESOL Flowmeter V40.
• V40
• VTP
5.8 Impulse Rate
Adjust. values:
Antifr. type
Flow. measurem.
Volume/Imp.
Water
V40
1,0 L/I
This adjustment channel depends on the selected flowmeter
type.
If the flowmeter 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 flowmeter 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
flowmeter!
5.9 Subaddress
© RESOL 10249 wmz.monus.indd
Adjust. values:
Flow measurem.
Volume/Imp.
Subaddress
V40
1,0 L/I
0
Adjustment of the subaddress.An individual module address
for one WMZ can be adjusted.This way it is possible to use
several WMZ with an individual address in one system. If
several WMZ (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
9|
WMZ
5.10 Bus mode
Adjust. values:
Volume/Imp.
Subaddress
Bus mode
1,0 L/I
0
Cascded
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 (see 5.9).
• active
• passive
• cascaded
5.11 Bus master
Adjust. values:
Subaddress
Bus mode
Bus master?
0
Cascaded
Yes
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 without a controller..
5.12 Sensor offset
Adjust. values:
Bus master?
Sensor 1
Sensor 2
Yes
0,0 K
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).
5.13 Reset
Adjust. values:
Subaddress
Bus mode
Reset
0
Cascaded
By means of this function, the measured heat quantity can
be reset to the value 0.
Adjust. values:
Bus mode
Reset
Language
| 10
Selection of the language (German, English, French).
Cascaded
German
© RESOL 10249 wmz.monus.indd
5.14 Language
WMZ
6.
Examples of connection
6.1 WMZ module in individual operation
mode
• WMZ: master board
subaddress: “0“
bus mode: “active“
• controller:
• WMZ: register WMZ module
slave board
subaddress: “0“
bus mode: “passive“
6.2 WMZ with controller
6.3 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.
6.4 Cascade with controller
• controller:
© RESOL 10249 wmz.monus.indd
WMZ 0
No adjustments have to be made (WMZmodule 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, voltagecarrying lines etc.
11 |
WMZ
7.
Troubleshooting
Please pay attention to the following items, if the calorimeter
WMZ is not working properly.
fuse T1.25A
WMZ
T1,25A
Netz / Mains
115 V ~
S2
2
3
V40
4
5
VBus
6
9 10
N L
12 13 14
19 20
Operating control lamp flashes red.
Operating control lamp off.
Sensor defect. An error code instead of a
temperature is shown in the corresponding sensor indication channel.
888.8
- 88.8
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 temperatures
are listed.
°C
°F
Ω
°C
°F
Ω
-10
-5
0
5
10
15
20
25
30
35
40
45
50
14
23
32
41
50
59
68
77
86
95
104
113
122
961
980
1000
1019
1039
1058
1078
1097
1117
1136
1155
1175
1194
55
60
65
70
75
80
85
90
95
100
105
110
115
131
140
149
158
167
176
185
194
203
212
221
230
239
1213
1232
1252
1271
1290
1309
1328
1347
1366
1385
1404
1423
1442
Resistance values of the Pt1000-sensors
| 12
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
reconnect it.
© RESOL 10249 wmz.monus.indd
S1
1
© RESOL 10249 wmz.monus.indd
WMZ
Notes
13 |
© RESOL 10249 wmz.monus.indd
WMZ
Notes
| 14
© RESOL 10249 wmz.monus.indd
WMZ
Notes
15 |
WMZ
Distributed by:
RESOL – Elektronische Regelungen GmbH
Heiskampstraße 10
45527 Hattingen / Germany
Tel.: +49 (0) 23 24 / 96 48 - 0
Fax: +49 (0) 23 24 / 96 48 - 755
www.resol.com
info@resol.com
Reprinting / copying
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 for copies, translations, micro films and the
storage into electronic systems.
Editor: RESOL – Elektronische Regelungen GmbH
Please note:
The design and the specifications are to be changed without notice.
The illustrations may differ from the original product.
| 16
© RESOL 10249 wmz.monus.indd
Important notice:
We took a lot of care with the texts and drawings of this manual and to the best of our knowledge and consent.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 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 at your own risk. No liability is assumed for incorrect, incomplete or false information and the
resulting damages.
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