Dimplex ZWU 06E User manual

Installation and operating instructions
ZWU 06E
Central control unit
with timer function
Central control unit for underfloor storage heating and electric storage heaters

2
Table of contents
Content Page
Device description...................................................................... 3
Technical device information...................................................... 4
Installation and operating instructions for technicians ....... 6
Installation options for external sensor ...................................... 7
Circuitry ...................................................................................... 9
Terminal assignment................................................................ 10
Circuit diagrams ....................................................................... 11
Commissioning......................................................................... 14
Overview of factory settings ..................................................... 15
Setting the charge control ........................................................ 17
Necessary commissioning steps.............................................. 19
Commissioning certificate ........................................................ 22
Operating instructions for users .......................................... 24
User interface........................................................................... 25
Operation ................................................................................. 26

3
Device description
The ZWU 06E central control unit controls the charging of an underfloor
storage heating system and/or the charging of storage heaters according
to out
door temperature, adjusters and control signals.
The basic design of the control unit has the basic
functions of a central
control unit as set out in DIN EN 50350. It has the following features:
•
Charging according to outdoor temperature,
•
The ability to process charge release signals from the distribution
network operator (with/without timer function),
•
The ability to output the charge release and the set charge rate to the
storage heaters and underfloor charge controllers,
•
Timer function for forward, backward and spread control,
•
Priority and secondary use of actual service release periods for low
and high tariffs,
•For optional connection to older external sensors, too.
Depending on the unit type connected downstream, an AC and a DC
output are available for the control signal.
Scope of supply
−
ZWU 06E central control unit
−
NTC external sensor with 3 m connection cable
−
Installation and operating instructions
−
Safety notes

4
Technical device information
ZWU 06E central control unit
Connection voltage
AC 230V ~ 50/60 Hz
Permissible voltage range
AC 207 V to 253 V
Power consumption
Approx. 2 VA
Inputs
•External sensor
•
Charge release LF, additional release LZ, multi-function LX
•Frost protection switching FS
Outputs
•DC control signal
•
AC control signal with duty cycle system
•Charge release relay (SH)
Reference variable at terminals ZX, Z0 (storage heaters)
DC 0.91 V to 1.43 V, safety overlap to 1.68 / 1.95 V
Reference variable at terminals ZX, Z0 (underfloor heating)
DC -2.85 V to -3.60 V, safety overlap to -4.35 V
Reference variable at terminals Z2~, Z1~ (storage heaters)
230V~ clocked 30 - 100% duty cycle
Power reserve
Approx. 6 h (runtime and clock)
Communication
Mini-USB to laptop/PC
Supported types of external sensor
•DIN EN 50350 standard sensor:
Dimplex standard sensor DIN,
tekmar series 31,
Schlüter/Deltadore NF,
Birka/Sabi 983,
Grässlin/Frensch RF-N-1,
Dohrenbusch/DRT 25-2k,
DEVI,
Stiebel Eltron,
AEG
•
tekmar series 30
•
Dohrenbusch DRT 25-470
•Schlüter/Deltadore UNI
•
Schlüter/Deltadore RF
•
Grässlin/Frensch WF-R2/WF-E55
•
Birka/Sabi 981
•
DEVI 25-15k
•
Ritter (DRT) 20-500
•
MALAG outdoor temperature sensor
•
Siemens outdoor temperature sensor
•
Siemens 2 outdoor temperature sensor
•
ACEC outdoor temperature sensor
•
Bauknecht PTC
•Witte outdoor temperature sensor
Supported duty cycle systems
30 - 100%, thermo-mechanical and electronic charge controllers
Power rating of duty cycle signal
1 A = 230 W nominal @ AC 230 V (min. resistance 230 Ω)
Supported DC voltages (SELV)
•Dimplex / Bauknecht (0.91 to 1.43 V)
•
tekmar (-3.60 to -2.85 V)
•
tekmar up to year of manufacture 70 (-4.35 to -2.85 V)
•Dohrenbusch DRT (2.65 to 3.00 V)
Power rating of DC signal
Connection of max. 20 charge controllers of type AR 06DCU 4
Nominal switching power of SH relay
1.1 kW

5
Operating/storage temperature
-15°C to +40°C / -20°C to +70°C, condensation not permitted
Protection class
II according to installation (see section “Installation”)
Degree of protection
IP 20 according to EN 60529, according to installation
Standard
DIN EN 50350 and DIN 44576 (draft)
Space requirements
Series mounting casing, 3 modular spaces according to DIN 43880
Fastening
TH-35 mounting rail according to DIN EN 60715
Connecting terminals
Cage clamp terminals for 2.5 mm², tightening torque ≤ 0.5 Nm
Dimensions
See dimension drawing
Weight
Approx. 250 g
External sensor
Sensor type
NTC sensor according to DIN EN 50350 in insulated casing
Connection cable
3 m long (extendable up to a maximum of 100 m)
Protection class
II according to DIN EN 60730-1
Degree of protection
IP54 according to DIN 40050
Dimensions
29 mm × 6.2 mm

6
Installation and operating instructions for technicians
Installing the central control unit
Installation must only be carried out by a technician authorised by the
respective energy supplier/network operator (utility company). The
regulations of the local utility company, as well as the relevant VDE
(Association of German Engineers) regulations are to be observed.
The space required by the device is 3 modular spaces according to DIN
43880. Protection against accidental contact accor
ding to protection
class II is ensured by installing the device in:
•
Small installation distribution board according to DIN 57603/VDE 0603
(e.g. N system distribution board)
•
Installation distribution board according to DIN 57659/VDE 0659.
The charge control
unit should be installed in the coolest location, i.e. the
lowest mounting row of the distribution board. Please ensure a minimum
distance the length of one modular space on both sides.
Installing the external sensor
The NTC external sensor is to be in
stalled at least 2 m above the floor,
preferably in the outer brickwork of the zone of main use (with large
systems) or in the room of main use (with single systems). The sensor
should not be exposed to direct sunlight. Heat sources (e.g. ventilation
shaft
s or tilted windows) must not influence the sensor and thus affect
the ZWU 06E central control unit.
Please observe the following:
•
The external sensor must be embedded in the mortar
•
The cable feedthrough must be carefully protected with thermal
insulation material.
The NTC external sensor contains a 3 m long connection cable and can
be extended
to a maximum of 100 m
using an installation cable (1.5 mm²
minimum).

7
Installation options for external sensor
Wall with outside insulation
Wall with or without inside insulation
Curtain wall facade
Pre
-fabricated house wall

8
Cable routing of SELV signals
If cables are routed in switch boxes or empty conduits, it is essential to
note that the following connections constitute SELV signals (Safety Extra
Low Voltage signals) that must be far enough away from cables carrying
mains power:
•
External sensor
•
DC control signal
Electrical connection
The circuitry stipulated by the local energy supplier (utility company) or
network operator
may vary from these connection examples. The
appropriate circuitry is normally listed in the utility company’s technical
connection requirements.
The LF (charge release), LX (multi
-function) and LZ (additional release)
terminals are to be wired in complian
ce with the utility company’s
requirements via floating contacts, e.g. a ripple control receiver or a tariff
timer.
The central control unit permits connection of:
•
20 charge controllers maximum
•
Any number of group control units, although the maximum total
number of charge controllers or storage heaters in the system is
limited to 20.
Control cables must be laid using two
-core wires according to DIN
44573. According to the VDE directive 0100, these two wires may not be
laid in one cable with network wires
Protect the power supply to the heating control independently of the
heating current with a separate circuit breaker.

9
ZWU 06E circuitry

10
Terminal assignment for the ZWU 06E central control unit
Terminal
Function
ZX
DC control signal output (+)
Z0
DC control signal output (-)
ZY
DC control signal output (day/night) for underfloor charge controller
(reserved*)
Ground
C
(reserved*)
FS
Frost protection
WF
External sensor input**
L
Supply voltage
N
Supply voltage
Z2~
Control signal output to the storage heaters; internally connected with N
Z1~
Control signal output to the storage heaters; clocked control cable (230V~)
with duty cycle signal
TGN230
(reserved*)
LF
Signal input: charge release from network operator
LX
Multi-function input; can be assigned various functions via the software (see start signal for
drive (LL) and blocking signal for high tariff (HT))
LZ
Signal input: additional release from network operator
SH
Switching output for controlling the heating contactor
L
Supply voltage
N
Supply voltage
* Reserved terminals must not be used as supporting terminals.
** Caution: when commissioning the device, it is essential to set the correct type for the connected sensor!