Resol EC1 User manual

EC1
*11210003* 11210003
Variable controller for
circulation systems
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual carefully.
Manual
www.resol.com
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© 20190306_11210003_EC1_115V.monen.indd
Safety advice
Please pay attention to the following safety advice in order to avoid danger and
damage to people and property.
Instructions
Attention must be paid to the valid local standards, regulations and directives!
Information about the product
Proper usage
The controller is designed for use in circulation systems with a ow switch 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 la-
belled 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 controller.
ÎMake sure the controller as well as the system are not exposed to
strong electromagnetic elds.
Subject to technical change. Errors excepted.
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.
• At the end of its working life, the product must not be disposed of as urban
waste. Old appliances must be disposed of by an authorised body in an envi-
ronmentally sound manner. Upon request we will take back your old appliances
bought from us and guarantee an environmentally sound disposal of the devices.

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Contents
1 General function description ............................................................ 4
2 Installation ........................................................................................... 5
2.1 Mounting ........................................................................................................................5
2.2 Electrical connection ...................................................................................................5
3 Flow switch........................................................................................... 6
4 Operation and function ...................................................................... 6
4.1 Push buttons..................................................................................................................6
4.2 Contoller parameter and indication channels .......................................................7
4.3 Phase (Ph).......................................................................................................................7
4.4 Runtime / Disinfection (Rc).........................................................................................8
4.5 Waiting time (Wc) .......................................................................................................8
4.6 Switch-on delay (Dc) ...................................................................................................8
4.7 Manual/Automatic mode (MM) ................................................................................8
4.8 Check value ow switch (FS) ....................................................................................9
4.9 Counter of the current time frame (tc)..................................................................9
4.10 Programme andVersion (PG and VN) .....................................................................9
5 Commissioning.................................................................................... 9
6 Troubleshooting................................................................................... 9

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Overview
• variable controller for circulation systems
• demand-oriented pump control
• easy-to-install housing
• user-friendly operation
• intuitive menu operation via push buttons
The purpose of a circulation system is to provide the user with hot water as quick
as possible when opening the tap.The pipe line system for supplying with domestic
hot water is simultaneously used as a circulation system so that by means of the
circulating pump, water is passed through the water pipes even without having to
open the tap.
There are different solution possibilities:
• 24 h operation of the circulating pump
• time-controlled operation of the circulating pump
• time and thermally controlled operation of the circulating pump
The solution possibilities mentioned are not optimally adjustable and will cause
unnecessary energy consumption.
Our solution:
Via a ow switch in the hot water pipe, the controller unit controls the water
draw-off.After opening the tap for a brief moment, the circulating pump is switched
on and will be switched off again after the adjusted runtime.The tap functions like
a ”remote control“.This circulating pump control function is an eco-friendly and
energy-saving solution in line with demand.
Technical data
Housing: plastic, PC-ABS and PMMA
Dimensions: 172 x 110 x 46 mm
Protection type: IP 20 / EN 60529
Protection class: II
Ambient temp.: 0 … 40 °C
Display: LCD, multi-functional display, combined display
Controller adjustment: menu-operated
Inputs: 1 sensor input for ow switch
1 General function description
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EC1
Strömungsschalter
Made in Germany
S1 NR1N L
PRG
12 12 13 14 17
T4A
115 V~
2 (1) A 115 V~
IP 20
50-60 Hz
18 19 20
The ow switch (2) built into the store inlet reacts to the water ow when the tap
is being opened (4). Before actually drawing off water, open the tap for a brief mo-
ment.After that, the control unit (1) puts the circulating pump into operation (3)
in order to let the hot water ow from the store (5) through the circulation line.
When you open the tap again,hot water will arrive there within a few seconds.The
control unit will now switch off the circulating pump again after the adjusted runt-
ime in order to prevent hot water from being pumped through the circulation line
when it is not used. In order to prevent the circulating pump from being switched
on again after a brief pause, the re-start is avoided by the adjustable waiting time.
In the case that the tap has not been opened for 12 hours (e.g. when the user is on
holiday), the pump will be put into operation for the adjusted runtime Rc.This will
protect the store against Legionella that can easily appear when the water is not
owing (Legionella protection). The time value is preadjusted to 12 h.
Note
In order to prevent water from being mixed with water from the cirula-
tion line, a circulating pump with a non-return valve should be used.

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2 Installation
2.1 Mounting
display
push button
fuse 4A
cable conduits
with strain relief
cover
WARNING! Electric shock!
Opening the housing will expose live parts!
ÎSwitch off power supply and disconnect the device from
power supply before opening the housing!
The controller must additionally be supplied from a double pole switch with con-
tact gap of at least 3 mm [0.12'']. Route sensor cables and power supply cables
separately.
ÎUnscrew the cross-head screw from the cover and remove it along with the
cover from the housing.
ÎMark the upper fastening point on the wall and drill.
ÎFasten the enclosed wall plug and screw leaving the head protruding.
ÎHang the housing from the upper fastening point and mark the lower fastening
point through the hole in the terminal box (centers 130 mm [5.1'']).
ÎDrill and insert the lower wall plug.
ÎFasten the housing to the wall with lower fastening screw and tighten.
ÎComplete electrical connections in accordance with terminal allocations, see
chap. 2.2.
ÎPlace the cover back onto the housing.
ÎFasten the cover by means of the cross-head screw.
2.2 Electrical connection
EC1
Strömungsschalter
Made in Germany
S1 NR1N L
PRG
12 12 13 14 17
T4A
115 V~
2 (1) A 115 V~
IP 20
50-60 Hz
18 19 20
mains terminals
19/20
fuse
sensor terminal S1 for
ow switch
load terminals
17/18 circulating pump
Connecting the device to the mains supply must always be the last step of the
installation!
The power supply to the controller must be carried out via an external power
switch (last step!). The supply voltage must be 115 V~ (50 … 60 Hz). Flexible cables
must be attached to the housing with the enclosed strain relief and the corre-
sponding screws.
The controller is equipped with one standard relay, to which loads such as pumps,
valves etc. can be connected:
18 = conductor R1
17 = neutral conductor N
13 = ground conductor ⌯
The ow switch (S1) is to be connected to the following terminals with either
polarity:
1 / 2 = ow switch
The mains supply is to be carried out at the terminals:
19 = neutral conductor N
20 = conductor L
12 = ground conductor ⌯

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3 Flow switch
The ow switch detects water ow in your pipe system and indicates if water is
being drawn-off.Along with other variables, the controller analyses these data and
controls the circulating pump. As the ow switch detects water movement in one
direction only, please pay attention to the correct ow direction when mounting
the device. In order to prevent the ow switch from calcifying early, we recom-
mend using it in the cold water area/store inlet. The two-wire cable of the ow
switch can be extended to 100m without any problem.When using long cables or
cable conduits, please use shielded or twisted lines.
Flow control switch with pipe section
• pipe section: brass
• housing: plastic
• vertical installation (max. ±15º)
• 22 mm tting, at sealing
• 3/4'' connection
• reed contact, max. 300V DC / 1 A
Note
Suitable for vertical installa-
tion only.
Please pay attention to the
ow direction (from bottom
to top in direction of the
arrow) indicated on the
housing!
4 Operation and function
4.1 Push buttons
The controller is operated via three push buttons below the display. Button 1 is
used for scrolling forward through the indication menu or to increase the adjust-
ment values. Button 2 is used for scrolling backward and reducing values. Button 3
is used for selecting channels and conrming adjustments.
The adjustment channels appear below the display channels. Scroll through the
display channels by pressing buttons 1 and 2. Scroll down in the display menu and
press button 1 for approx. two seconds after you have reached the display item
tc. When an adjustment value is shown on the display, ”SEt“ is indicated in the
screen. Press button 3 in order to access the adjustment mode. ”SEt“ starts
ashing. Adjust the value using buttons 1 and 2. Briey press button 3, ”SEt“ per-
manently appears,the adjusted value will be saved.
1
2
3
backward forward
Set
selection / adjustment mode
• Select a channel by buttons 1 and 2
• Briey press button 3 so that ”SEt“ ashes
• Adjust the value by buttons 1 and 2
• Briey press button 3 so that ”SEt“ permanently appears, the adjusted value is
now saved

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4.2 Contoller parameter and indication channels
• Ph =Phase
Phase 1: The contactor has been switched on, the circulating pump is put into
operation for the runtime Rc (Runtime of circulation).
Phase 2: Water has been tapped over a longer period, the circulating pump
switches off after the runtiume Rc is over.
• FS =Flow Switch
Flow switch
0 = open contact, no water ow
1 = closed contact, water ow
• tc = control time of circulation
Check channel for Rc and Wc
• Rc =Runtime of circulation
Runtime of the circulation
• Wc =Waiting time for (next) circulation
Waiting time
• Dc = Delay circulation
Switch-on delay for the circulating pump
• MM =Mode Manual
Manual mode
0 = manually off
1 = manually on
2 = automatic operation
• Pg =Programme
Programme
• VN =Version Number
Version number
4.3 Phase (Ph)
Phase c1: The ow switch has been closed and the controller puts the circulating
pump into operation ifor the runtime Rc.
Phase c2: After the runtime Rc is over, the pump is switched off at least for the
duration of the waiting time Wc.
Ph shows the current phase or the state of the controller.
The ow switch is closed during draw off, the controller is in phase c1 and puts
the circulating pump into operation.After the runtime Rc has ended, the controller
switches the pump off again and is in phase c2.
The controller stops for the adjusted runtime Wc before the pump can be put
into operation again.This way, unnecessary pump operation and water circulation
can be avoided.
If water is being drawn off again within the time interval Wc, the counter will be
switched off for the duration of the draw off for the waiting time and will be put
into operation again. This way, the whole time interval between the rst and the
second pumping process, during which there is no water ow, equals the adjusted
time interval Wc.

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4.4 Runtime / Disinfection (Rc)
Rc: Circulation runtime
(Runtime of circulation)
Factory setting: 2 Min
Indication in minutes
Adjustment range: 0:01 … 0:10
The runtime Rc indicates the time (hh:mm) in which the pump is put into opera-
tion by the controller during draw off.The runtime Rc is simultaneously used for
the disinfection function.This function puts the pump into operation automatically
for the runtime, if no water has been drawn off within 12 hours.
4.5 Waiting time (Wc)
Wc:
Waiting time for next circulation
Factory setting: 10 Min
Indication in minutes
Adjustment range: 0:00 … 0:20
If Wc is set to 0:00, the pump will be operating as long as the ow switch is closed.
Wc stands for the waiting time (hh:mm) during which the controller puts the cir-
culating pump into operation after the runtime Rc is over. If water is being drawn
off during the waiting time, the time counter is switched off and will be switched
on again afterwards.This will avoid unnecessary pumping of hot water through the
pipe system.
4.6 Switch-on delay (Dc)
Dc: Delay
Factory setting: 0 s
Adjustment range: 0 … 2 s
The switch-on delay is the time during which the ow switch FS08 must be closed
in order to detect water ow. This will prevent the circulating pump from being
switched by water hammer in the pipes.
4.7 Manual/Automatic mode (MM)
MM : Manual mode (ManualMode)
Factory setting : 2
MM Pump
0 off
1 on
2 auto
By means of the adjustment value MM3, different operation modes for the control-
ler can be selected: Manually on, manually off and automatic.

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4.8 Check value ow switch (FS)
FS: Status of the ow switch (FlowSwitch)
0 = no draw-off
1 = draw-off
The FS value indicates water ow in the circulation system. During draw-off FS = 1
is displayed, if no water is being drawn off, the controller displays FS = 0.
4.9 Counter of the current time frame (tc)
tc: Check time for Rc or Wc (control time of circulation)
The output value tc is a time counter that counts up from t= 0 to the value of Rc
or Wc depending on the current phase.
During phase c1, the value tc indicates the counter from 0 to Rc, in phase c2, the
counter from 0 to Wc.
4.10 Programme and Version (PG and VN)
PG: Programme (ProGramme)
VN: Version number (VersionNumber)
PG species the current hardware programme number and VN the current soft-
ware version.
5 Commissioning
Establish the power supply. During a short initialisation phase, the operating con-
trol lamp ashes red and green. After initialisation, the controller is in the auto-
matic mode with typical settings.Now the controller is ready for operation with
typical settings to suit that system and normally the factory settings will give close
to optimum operation.
Control parameters can be individually adjusted in the adjustment channels (see
4.2), if necessary.
6 Troubleshooting
EC1
Strömungsschalter
Made in Germany
S1 NR1N L
PRG
12 12 13 14 17
T4A
115 V~
2 (1) A 115 V~
IP 20
50-60 Hz
18 19 20
can
fuse
T4A
If the EC1 controller does not work correctly, please check the following
items:
Power supply
If the operating control lamp is off,please check the power supply of the controller.
Fuse
The controller is protected with 1 can fuse.T4 A.This fuse can be replaced when
the cover is removed (spare fuse is enclosed in the accessory bag).

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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
Regelungen GmbH. This especially applies for copies, translations, micro lms
and the storage into electronic systems.
© RESOL – Elektronische Regelungen GmbH