RDZ DHW User manual

Chiller and Heat Pumps
Chiller e pompe di calore
DHW CONTROL UNIT
QUADRO GESTIONE ACS
TECHNICAL MANUAL
MANUALE TECNICO
Control unit for Domestic Hot Water production with heat pump system
Centralina di controllo della produzione di ACS con pompa di calore
FAG0FC001AB.00
12/2018
bit.ly/rdzwebsite

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OPERATING AND INSTALLATION INSTRUCTIONS
Control unit for domestic hot water
production with heat pump system

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SUMMARY
1 INSTALLATION ................................................................................................................................................................ 5
1.1 GENERALITIES ......................................................................................................................................................... 5
1.2 DESCRIPTION .......................................................................................................................................................... 5
1.3 ADDITIONAL REQUIRED MATERIAL (NOT SUPPLIED)............................................................................................ 6
1.4 ELECTRICAL REQUIREMENT....................................................................................................................................6
1.5 INSTALLATION ........................................................................................................................................................ 6
1.6 WIRING ...................................................................................................................................................................7
1.7 WIRING DIAGRAM.................................................................................................................................................. 8
1.8 STARTUP ................................................................................................................................................................. 9
1.9 FUNCTIONAL DIAGRAM ...................................................................................................................................... 10
2 OPERATING INSTRUCTIONS .........................................................................................................................................11
2.1 USER INTERFACE...................................................................................................................................................11
2.2 STARTUP SEQUENCE.............................................................................................................................................11
2.3 PARAMETERS SETUP ............................................................................................................................................12
2.4 PARAMETER TABLE...............................................................................................................................................12
2.5 DIAGNOSTIC TABLE ..............................................................................................................................................15
2.6 EVENT LIST ............................................................................................................................................................ 15
2.7 SMART MANUAL OPERATIONS............................................................................................................................15
3 FEATURES .....................................................................................................................................................................17
3.1 DOMESTIC HOT WATER PRODUCTION ................................................................................................................17
3.2 RECIRCULATION MANAGEMENT .........................................................................................................................18
3.3 ANTI-LEGIONELLA.................................................................................................................................................18
3.4 ANTI-FREEZE MANAGEMENT ............................................................................................................................... 19
3.5 HEAT PUMP ALARM .............................................................................................................................................19
3.6 SMART ENERGY ....................................................................................................................................................19
DECLARATION OF CONFORMITY
This product is marked as it satisfies Directives:
•CEI EN 61000-6-1 (2007) Immunity for residential, commercial and light-industrial environments
•CEI EN 61000-6-3 (2007) Emission standard for residential, commercial and light-industrial environments
•CEI EN 60730-1 (2013) following DIRECTIVE 2014/30/EU + 2014/35/EU + 2011/65/EU
This declaration will become void in case of misuse and/or non observance though partial of manufacturer’s
installation and/or operating instructions
.

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IMPORTANT!
Please read before installation
This system meets strict safety and operating standard.
For the installer or service perso nit is important to install or service the system so that it operates safely and
efficently.
To start the warranty, the product must be started by an RDZ S.p.A service centre.
Reccomandations
• The personnel responsible for receiving the unit must conduct a visual inspection in order to identify all damage to
witch the unit may have been duringl transport .
For safe installation and trouble –free operation, you must:
• Carefully read thi instruction booklet before beginning.
• Follow each installation or repais step exactly as shown.
• Observe all local,state and national electrical an safety codes .
• Pay close attention to all warning and caution notice given in this manual.
• Supply the unit with a dedicated electrical line
Make install the unit by qualified personnel.
WARNING
This symbol refers to a hazard or unsafe practice wich can result in severe personal injury or death.
CAUTION
This symbol refers to to a hazard or unsafe practice wich can result in personal injury or product or property damage.
If necessary, get help
These instruction are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sale/service outlet or your certified dealer for additional
instructions.
In case of improper installation
The manufacturer shall in no way be responsable for improper installation or maintenance services, including failure
to follow the instructions of this document.

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WARNING
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED,
EXPERT ELECTRICIANS SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power until all wiring and tubing are completed or reconnected and checked,to ensure the
grounding.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these
Instruction when wiring.
Improper connections and inadequate grounding can cause accidental injuring and death.
• Ground the unit following local electrical codes.
• The yellow/green wire cannot be used for any connections different from the ground connection.
• Connect all wiring tighly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• Don’t use multi-core cable when wiring power supply and control lines. Use separate cables for each type of line

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1 INSTALLATION
1.1 GENERALITIES
DHW Controller (or “control unit”) is a control and management device for domestic hot water production used with
HP Heat Pump units.
The control unit can drive an heat pump and an electric resistor (until 4 kW) to manage the various function by
optimizing the electrical consumption.
The main functions are:
•DHW production in storage tank
•DHW recirculating management
•Anti-legionella managemnt
•SMART-ENERGY management
•Anti-Freeze protection
1.2 DESCRIPTION
Box contents
•N° 1 DHW Controller
•N° 1 NTC Probe
•N°1 Instruction booklet
Hardware components
•Plastic box with transparent opening front 6 DIN modules
•Bipolar Magnetothermic protection 6KA 32A
•Fuse holder (10x38) for semiconductor ultra-rapid fuse (1 DIN module)
•Internal wiring for ricirculation pump and electric resistor.
Note: The ultra-rapid fuse is calibrated in order to unit characteristics, then you must indicate model in case of
substitution. Use only equal or equivalent fuses. The technical characteristics of the fuse are:
•I2T Triac (Tp 10mS) = 1000 A2s
•I2T Fuse < 1000 A2s
•Fuse current 25A 600Vac
•Breacking power 200KA
•Fuse Box 10x38
Hardware components of control board
•N° 2 relè output (dry contact)
•N° 2 NTC Probe sensor 10K 25°C Beta 3970
•N° 1 TRIAC driving resistor (MAX 4 kW)
•N° 1 I/O input 230Vac
•N° 3 7 segments display led (3 digits with decimal points)
•N° 4 report led
•N° 4 Keys
•Isolated and protected Power supply with delayed fuse (315 mA o 1 A)

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1.3 ADDITIONAL REQUIRED MATERIAL (NOT SUPPLIED)
•N° 1 Low voltage RELE (Recirculation pump buffer)
•Wiring: use insulated copper wires of type,section and lenght indicated in 1.6
•Cable Press
1.4 ELECTRICAL REQUIREMENT
•Before the installation, be sure that the voltage of power supply is the same as the one indicated on the
device
•All the electrical wiring must follow the local electrical codes.For details, call the dealer or an electrician.
•All the electrical wiring must be done by a specialized electrician.
1.5 INSTALLATION
It is recommended that the system be installed by a qualified tecnician, following the attached instructions
Positioning
•Make the holes for the electrical cables on the bottom of the box, following the existing tracks.
•Use a cable gland of the appropriate size for each hole.
•Fix the unit at the wall at maximum 2 m from the storage tank.
•Make the wiring of the NTC probes so as to have shorter connections possible.
Tip: Make three holes in witch to carry:
1. Power supply 230 Vac
2. NTC probes + relè output (R1, R2)
3. ALARM wire (from Acqua Unit) + electrical resistor driver cable

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1.6 WIRING
Lift the transparent cover, unscrew the two side screw and remove the cover.
There are a PTR10 connector, seven FASTON, six grouping and one separated for grounding, a magnetothermic
switch with output prewired to the unit and one prewired protection fuse for the electric resistor.
PTR 10 terminal block
•R1: N° 2 dry contact NA 6A 250V cosphy=1; driver for heat pump
•R2: N° 2 dry contact NA 6A 250V cosphy=1; driver for recirculation pump.It is advisable to use a low voltage
buffer relè . Refer to wiring diagrams for details.
•ALARM: N° 2 contacts for alarm / defrost signal from heat pump ( 230 Vac input)
•NTC1: N° 2 contacts for NTC probe from storage tank.
•NTC2: N° 2 contacts for NTC probe from return water line (optional, only for recirculation management)
FASTON description
•Faston (Power supply) Prewired to magnetothermic switch output.
•Faston (Protection fuse for electric resistor) Prewired to on-board fuse.
•Faston (Resistenza Elettrica) Electrical connection to the electric resistor of the storage tank.
•Faston T Grounding.

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1.7 WIRING DIAGRAM