RDZ UMHPI User manual

Chiller and Heat Pumps
UMHPI Controller
USER MANUAL
UMHPI on-board electronic user controller
FAE0FA000BZ.00
06/2018
bit.ly/rdzwebsite

INDUSTRIAL INVERTER AIR/WATER HEAT PUMPS WITH
AXIAL FANS
CONTROLLER MANUAL
Models
UMHPI 25 / UMHPI V 25
UMHPI 35 / UMHPI V 35
UMHPI 50 / UMHPI V 50
UMHPI 60
This manual has been created for informative purpose. The company declines any responsibility for the results of any projecting or any installation based on the explanations and/or on
the technical specifications provided in this manual. It is besides forbidden the reproduction under any form of the texts and of the figures contained in this manual.
"This manual is a translation from the official italian language version. For reasons of environmental respect the Company will not provide the hard copy in the original language which
could be directly requested or downloaded from the Company website at any time. In case of any dispute, the original language manual will be the trusted one".
00 10-2017 Alignment with Ver324Rev015rc12
Rev Date Notes
Serie / Series / Serie / Serie / Série
UMHPI INDUSTRIAL INVERTER AIR/WATER HEAT PUMPS WITH AXIAL FANS
Possible wasted electrical or electronic devices/products should not be located together with normal domestic waste, but disposed according to the
current WEEE law in compliance with the European Directive 2012/19/UE and following modifications 2003/108/EC. Please inform yourself at your
local Administration or at your reseller in case the product will be replaced with a similar one.

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INDEX
1CONSERVATION OF THE MANUAL ...................................................................................................................................... 4
1.1 GRAPHIC SYMBOLS USED IN THE MANUAL ............................................................................................................................ 4
2PERMITTED USES................................................................................................................................................................ 4
3GENERAL SAFETY GUIDELINES ............................................................................................................................................ 4
3.1 PERSONAL PROTECTION EQUIPMENTS.................................................................................................................................. 4
3.2 HEALTH AND SAFETY OF WORKERS........................................................................................................................................ 5
4PURPOSES AND CONTENTS OF THE MANUAL...................................................................................................................... 5
5SYSTEM ARCHITECTURE ..................................................................................................................................................... 6
6USER – CB MASTER CONTROLLER INTERFACE...................................................................................................................... 7
6.1 MENU STRUCTURE DIAGRAM ................................................................................................................................................ 7
6.2 ANALOG INPUTS..................................................................................................................................................................... 8
6.3 PARAMETERS CATEGORIES .................................................................................................................................................... 8
6.4 ADJUSTABLE SETPOINT BY THE USER ..................................................................................................................................... 8
6.4.1 DISPLAY .......................................................................................................................................................................... 9
6.4.2 LED.................................................................................................................................................................................. 9
6.5 INPUT/OUTPUT (I/O) PORTS .................................................................................................................................................. 9
7OPERATION LOGIC ............................................................................................................................................................10
7.1 DYNAMIC SETPOINT ADJUSTMENT ...................................................................................................................................... 10
7.2 SETPOINT ADJUSTMENT FROM 0-10V INPUT....................................................................................................................... 11
7.3 CIRCOLATOR......................................................................................................................................................................... 11
7.3.1 OPERATION BY MEAN OF THE THERMOREGULATOR (Default).................................................................................... 12
7.3.2 OPERATION UNDER THERMOREGULATOR CALL WITH PERIODIC ACTIVATION ........................................................... 12
7.3.3 OPERATION WITH ACTIVE ELECTRIC HEATER ............................................................................................................... 12
7.3.4 CONTINUOUS OPERATION ........................................................................................................................................... 12
7.3.5 LINEAR ADJUSTMENT OF THE CIRCULATING PUMP–DOUBLE WATER ΔT.................................................................... 12
7.4 MULTICOMPRESSORS .......................................................................................................................................................... 13
7.4.1 LOGIC OF ACTIVATION.................................................................................................................................................. 13
7.4.2 LOGIC OF RELEASE........................................................................................................................................................ 13
7.4.3 CAPACITY CONTROL ..................................................................................................................................................... 13
7.4.4 EMERGENCY CONDITIONS............................................................................................................................................ 14
7.4.5 DHW LOGIC CONTROL.................................................................................................................................................. 14
7.4.6 DEFROST FUNCTION CONTROL .................................................................................................................................... 14
7.4.7 INVERTER COMPRESSOR CONTROL IN COOLING MODE .............................................................................................. 14
7.4.8 HEATING FUNCTION CONTROL .................................................................................................................................... 14
7.4.9 TRANSITORY OF STARTING........................................................................................................................................... 15
7.5 HEAT DISSIPATION FAN MOTOR CONTROL .......................................................................................................................... 15
7.5.1 FAN SPEED CONTROL ................................................................................................................................................... 15
7.5.2 FAN SPEED CONTROL IN COOLING MODE.................................................................................................................... 15
7.5.3 FAN SPEED CONTROL IN HEATING MODE .................................................................................................................... 16
7.6 MODULATION FOR OIL RETURN........................................................................................................................................... 16
7.7 DEFROSTING CYCLE.............................................................................................................................................................. 16
7.7.1 DEFROST OPERATION SIGNALIZATION ......................................................................................................................... 16
7.8 ALARM NOTIFICATION ......................................................................................................................................................... 17
7.9 SUMMER/WINTER OPERATION NOTIFICATION FUNCTION ................................................................................................. 17
7.10 COMPRESSOR CRANCKASE HEATER ..................................................................................................................................... 17
7.11 ANTIFREEZE PROTECTION ELECTRIC HEATERS (IF THE KA ACCESSORY IS PRESENT) ............................................................. 17
7.12 ACTIVATION OF DOMESTIC HOT WATER PRODUCTION ....................................................................................................... 17
7.12.1 MEMORY OF THE SENSOR IN HEATING MODE............................................................................................................. 18
7.13 HEATING MODE ON DOMESTIC HOT WATER TANK.............................................................................................................. 19
7.14 REMOTE FUNCTIONS............................................................................................................................................................ 20
7.14.1 ON/OFF......................................................................................................................................................................... 20
7.14.2 SUMMER/WINTER MODE COMMUTATION ................................................................................................................. 20
7.14.3 SANITARY MODE CALL FROM DIGITAL INPUT .............................................................................................................. 20
7.15 PLANT CIRCUIT REMOTE SENSOR......................................................................................................................................... 21
7.16 VAPOR INJECTION (ONLY FOR VVERSION)................................................................................................................................. 21
7.16.1 Main circuit VEE, Double control.................................................................................................................................. 22

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7.16.2 Injection electronic valve VEIV...................................................................................................................................... 22
7.16.3 Vapor injection valve (VEIV) ......................................................................................................................................... 23
8ACTIVABLE LOGIC FUNCTIONS WITH GI- MODULE FOR PLANT MANAGEMENT (OPTIONAL)................................................23
8.1 AUXILIARY ELECTRIC HEATERS ............................................................................................................................................. 23
8.1.1 AUXILIARY ELECTRIC HEATER THE PLANT SYSTEM ....................................................................................................... 23
8.1.2 AUXILIARY ELECTRIC HEATER OF THE PLANT IN DEFROST CYCLE................................................................................. 24
8.1.3 AUXILIARY ELECTRIC HEATER OF DHW PRODUCTION.................................................................................................. 24
8.1.4 SINGLE AUXILIARY HEATER FOR PLANT/DHW PRODUCTION ....................................................................................... 24
8.1.5 SELECTION MODE OF AUXILIARY ELECTRIC HEATERS................................................................................................... 24
8.1.6 MANAGEMENT OF THE CIRCULATOR WITH ACTIVE ELECTRIC HEATER ....................................................................... 24
8.2 BOILER ENABLEMENT........................................................................................................................................................... 24
8.3 ACTIVATION OF AUXILIARY ELECTRIC HEATER AND BOILER DURING THE JOINT/IN SUBSTITUTION OPERATION TO THE
COMPRESSOR................................................................................................................................................................................... 25
8.3.1 OPERATION IN HEAT PUMP MODE .............................................................................................................................. 25
8.3.2 IN JOINT OPERATION (AREA I)...................................................................................................................................... 25
8.3.3 IN JOINT OPERATION (AREA II)..................................................................................................................................... 26
8.3.4 IN SUBSTITUTION OPERATION ..................................................................................................................................... 26
8.3.5 OPERATION AREA - ACTIVATION OF THE AUXILIARY ELECTRIC HEATER AND BOILER (Plant circuit water temperature
sensor is not enabled) .................................................................................................................................................................. 26
8.3.6 AUXILIARY SYSTEMS OFFSET MANAGEMENT............................................................................................................... 29
8.4 DOUBLE SET-POINT .............................................................................................................................................................. 29
8.4.1 SETTINGS ...................................................................................................................................................................... 29
8.4.2 ADJUASTABLE SET-POINT ............................................................................................................................................. 30
8.4.3 COMMUTATIONS.......................................................................................................................................................... 30
8.5 MANAGEMENT OF THE SECONDARY CIRCULATOR (RELAUNCHING PUMP)............................................................................... 30
9ACTIVABLE FUNCTIONS WITH KIE MODULE (OPTIONAL) ....................................................................................................30
10 AVAILABLE FUNCTIONS WITH EVO TOUCH CONTROLLER (OPTIONAL).............................................................................31
11 TABLE OF ALLOWED PARAMETERS FOR THE USER AND INSTALLER.................................................................................31
11.1 SETPOINT CONFIGURATION PARAMETERS .......................................................................................................................... 31
11.2 CONFIGURATION PARAMETERS........................................................................................................................................... 31
11.3 ALARMS CONFIGURATION PARAMETERS ............................................................................................................................ 32
11.4 ADJUSTMENT PARAMETERS ................................................................................................................................................ 33
11.5 CONDENSTATION PARAMETERS .......................................................................................................................................... 33
11.6 PUMP CONFIGURATION PARAMETERS ................................................................................................................................ 34
11.7 DEFROSTING PARAMETERS.................................................................................................................................................. 34
11.8 VAPOR INJECTION PARAMETERS CONFIGURATION ............................................................................................................. 34
11.9 COMPRESSOR PARAMETERS CONFIGURATION ................................................................................................................... 34
11.10 CONFIGURATION PARAMETERS –MODULE “GI” ................................................................................................................... 35
11.11 CONFIGURATION PARAMETERS OF THE HEATING DEVICES –MOD GI.................................................................................. 35
(5) FOR THE MODEL UMHPI V R08=-20°C. ...................................................................................................................................36
11.12 CONFIGURATION PARAMETERS OF UMHPI V ...................................................................................................................... 36
12 ALARMS ........................................................................................................................................................................37
12.1 FLOW SWITCH [E06]............................................................................................................................................................. 37
12.2 ANTI-FREEZING [E05] ........................................................................................................................................................... 37
12.3 WATER SIDE HIGH TEMPERATURE [E18] .............................................................................................................................. 37
12.4 SENSORS ALARM [E61÷E69]................................................................................................................................................. 37
12.5 TIMEOUT INVERTER [E801] .................................................................................................................................................. 37
12.6 REMOTE ON/OFF [E00] ........................................................................................................................................................ 37
12.7 HIGH PRESSURE [E01]........................................................................................................................................................... 37
12.8 HIGH PRESSURE FLOW SWITCH (IN SERIES WITH THE COMPRESSOR OUTLET SENSOR) [E64] ............................................. 37
12.9 LOW PRESSURE [E02] ........................................................................................................................................................... 37
12.10 [E08] DRIVER LIMITATION .................................................................................................................................................... 37
12.11 [E101] MODBUS 1CONNECTION ERROR.............................................................................................................................. 37
12.12 POWER FAILURE................................................................................................................................................................... 38
12.13 USER BLOCK ALLARMS TABLE............................................................................................................................................... 38

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1CONSERVATION OF THE MANUAL
The manual has to be always kept for future reference. It has to be stored in a safe place, away from dusts and moisture. It has to
be also available and accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.
The company reserves the right to modify its products and related manuals without necessarily updating previous versions of the
reference material. It declines also any responsibility for possible inaccuracies in the manual if due to printing or transcription
errors.
The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this
manual.
The company is available to give any detailed information about this manual and to give information regarding the use and the
maintenance of its own units.
1.1 GRAPHIC SYMBOLS USED IN THE MANUAL
Indicates prohibited operations.
Indicates operations that can be dangerous for people and/or disrupts the correct operation of the equipment.
Hazardous electrical voltage - risk of electric shock
Indicates important information that the operator has to follow in order to guarantee the correct operation of the
equipment in complete safety. It indicates also general notes.
2PERMITTED USES
•The company excludes any contractual and extra contractual liabilities for damages caused to persons, animals or objects, by
incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the
information contained in this manual.
•These units have been designed only for heating and/or cooling water. Any other use not expressly authorized by the
manufacturer is considered improper and therefore not allowed.
•The execution of all works must be performed by skilled and qualified personnel and competent in the existing rules in the
country in which the appliance will be installed.
3GENERAL SAFETY GUIDELINES
Before beginning any operation on the units, every user and operator has to be perfectly knowledgeable about the operation of
the equipment and its control functions and has to have read and understood the information listed in this manual.
3.1 PERSONAL PROTECTION EQUIPMENTS
It’s necessary to use the below personal protective equipment when operating and maintaining the UMHPI/UMHPI V units,
Protective clothing: Service man or who operates on the plant systems should wear protective clothing that
complies with the basic safety requirements currently in force. In case of slippery floors, users have to wear
safety shoes with non-slip soles.
Gloves: Protection gloves should be used during maintenance or cleaning operations.
Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during
cleaning and maintenance operations.

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3.2 HEALTH AND SAFETY OF WORKERS
The European Community has adopted a number of directives on workplace’s health and safety, which include 89/391/CEE,
89/686/CEE, 2009/104/CE, 86/188/CEE and 77/576/CEE directives. Every employer shall implement such provisions and ensure
that workers respect them:
It’s forbidden:
•To remove and/or tamper with any safety device.
•The access to the electrical board by unauthorized persons
•To carry out any work on the equipment under voltage
•To touch the equipment if you are not allowed.
•The use of the appliance by children or unassisted disabled persons.
•To touch the appliance when barefoot or parts of the body are wet or damp
•To clean the unit when the power is ‘ON’.
•To pull, remove or twist the electrical cables coming out from the unit.
•To step with your feet on the appliance, sit down and/or place any type of object.
•To spray or pour water directly on the unit.
•To dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags,
etc.) as they may represent an environmental and health hazards.
•To tamper with or replace parts of the equipment without the specific consent of the manufacturer. The
manufacturer shall have no whatsoever civilian or penal responsibility in case of unauthorized operations.
WARNING:
•Before proceeding, you should read the user’s-installer manual accompanying appliance.
•All the operations described below must be carried out only by QUALIFIED PERSONNEL.
•The wiring to the terminal block must be performed by qualified personnel.
•Any routine and/or not-routine maintenance operation shall be carried out when the equipment has been shut
down, disconnected from electric power supply.
•Do not put neither your hands nor insert screwdrivers, spanners or other tools into moving parts of the
equipment
•The equipment’s supervisor and the service man have to receive suitable training for performing their tasks in
safety.
•The access to the electric panel is limited only for authorized personnel.
•Operators have to know how to use personal protective devices and have to know the accident-prevention
guidelines contained in national and international laws and norms.
•The operator’s workplace has to be kept clean, tidy and free from objects that may prevent free movements.
Appropriate lighting of the work place shall be provided so as to allow the operator to carry out the required
operations safely. Poor or too strong lighting can cause risks.
•Ensure that the work places are always adequately ventilated and that aspirators are working, in good
condition and in compliance with the requirements of the laws in force.
•Not all the configurations can be simultaneously enabled and/or changed.
•Other values different than those of default can ensure the proper operation of the unit, in case of doubt about
the value to be set contact please our office.
•The company excludes any contractual and extra contractual liabilities for damages caused to persons, animals
or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or
superficial reading of the information contained in this guide.
•The access to the electrical board by unauthorized persons is forbidden.
•It’s forbidden to carry out any work on the equipment under voltage.
•It’s forbidden to touch the equipment if you are not allowed.
Requirements before performing electrical work on the control panel:
•Turn off the unit from the control panel ("OFF" displayed).
•Put the switch “QF” general differential on OFF position
•wait for 15 seconds before getting access to the electric board
•Check the ground connection before beginning any operation.
•Be sure that you are well insulated from the ground, with dry hands and feet, or by using insulating platforms
and gloves.
•Check that there is no foreign material near the system.
4PURPOSES AND CONTENTS OF THE MANUAL
This manual provides basic information as for the configuration of the panel controller of UMHPI/UMHPI V units.
It is addressed to the installer and the user of the unit: it allows you to operate this equipment efficiently, even if the user does not
have any previous specific knowledge of it.

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Not all the described functions can be individually and/or simultaneously selected. Please contact the technical office for any
information.
This manual describes the characteristics of the equipment when it was being put on the market; therefore, it may not capture
later technological improvements introduced by the company as part of its constant endeavour to enhance the performance,
ergonomics, safety and functionality.
The company introduces also technological improvements and is not constrained to update the manuals for previous versions of
appliances that could not be compatible. So make sure to use, for the installed unit, the supplied manual.
It’s recommended that, the user must follow the instructions contained in this booklet, especially those concerning the safety and
routine maintenance.
5SYSTEM ARCHITECTURE
The system UMHPI is composed of an electronic controller device:
a) CB = on-board (Master) controller located on the front panel of the unit.
As for UMHPI V models and if are equipped with the optional kit mod. GI, the system includes an additional controller.
b) SL1 = on-board (Slave 1) controller inside the electric panel of the unit.
The CB controller of the unit manages the Modbus communication of the whole.
N.B. This guide describes the control logics and functions that can be enabled by the CB unit controller
FRONT PANEL
INTERNAL ELECTRIC
PANEL
Included in UMHPI V series and in UMHPI
models that are equipped with the
optional mod. GI kit
CB – SL1 ModBus communication
CB On-board controller
(Master)
SL1 On-board controller
(
Slave 1
)

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6USER – CB MASTER CONTROLLER INTERFACE
It is used to select the operating mode, and to reset the manual resetting alarms. The operating mode changes as
per the sequence below each time you press the Mode button:
off cool heat off
If the Domestic Hot Water (DHW) mode is enabled, the sequence is as follows:
off cool cool+sanheat heat+sanoff
During the parameters’ setting, this button can be used to revert BACK to the previous level.
It allows you to enter into the setting menu parameters and to select the cool/summer, heat/winter and DHW
set point value.
UP button: In the setting mode, this button allows you to move up to a higher menu or to increase the value of a
parameter when you are in the “edit” mode.
DOWN button: In the setting mode, this button allows you to shift to a lower menu or to decrease the value of a
parameter when you are in the “edit” mode.
WARNING
All the operations described below must be carried out only by qualified personnel.
Not all the configurations can be simultaneously enabled and/or changed.
Other values different than those of default can ensure the proper operation of the unit, in case of doubt about
the value to be set contact please our office.
The company excludes any contractual and extra contractual liabilities for damages caused to persons, animals
or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or
superficial reading of the information contained in this manual.
6.1 MENU STRUCTURE DIAGRAM

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Level 0 (U) = always appearing
Level 1 (M) = it appears if you enter the maintainer or manufacturer password
Level 2 (C) = it appears if you enter the manufacturer password
Level 3 (A) = it appears only via Modbus
6.2 ANALOG INPUTS
By entering the maintainer password in the menu of analog inputs "tP", at the level 1 of the menu structure diagram of the on-
board control panel, you can read the values of the current probes:
tp DESCRIPTION Unit
t01 Water inlet temperature (°C)
t02 Water outlet temperature (°C)
t03 Compressor inlet temperature (°C)
t04 Compressor outlet (discharge) temperature (°C)
t05 High pressure (bar)
t06 Low pressure (bar)
t07 Outdoor air temperature (°C)
t08 DHW temperature (if DHW is enabled) (°C)
t09 DHW temperature (if DHW production is enabled) (°C)
*t11 Plant circuit remote temperature sensor (if enabled) (°C)
**t15 Injection pressure (bar)
**t17 Injection temperature (°C)
(*) Present in the UMHPI V models or with the optional kit mod. Gi in the the models UMHPI.
(**) Present in the UMHPI V models
6.3 PARAMETERS CATEGORIES
The parameters are classified into groups, each group is identified by a 3-digit code, while the index of each parameter is preceded
by a letter.
DESCRIPTION GROUP IDENTIFICATION CODE PARAMETER INDEX VISIBILITY
Configuration CnF H- USER/INSTALLER
Compressor CP C- INSTALLER
Fan-motor FAn F- INSTALLER
Alarms ALL A- INSTALLER
Regulation Re b- INSTALLER
Pump PUP P- INSTALLER
Electric heater Fro r- INSTALLER
Defrosting dFr d- INSTALLER
Electronic expansion valve EEu U- INSTALLER
Offset OFF o- INSTALLER
**Mixer valve rAd i- INSTALLER
**Solar SUn S- INSTALLER
*Vapor injection Eiu u- INSTALLER
Inverter compressors nCP n- INSTALLER
**DHW preparer AcS Ac- USER/INSTALLER
(*) Parameters present in UMHPI V series
(**) Parameters present with the optional KIE module
6.4 ADJUSTABLE SETPOINT BY THE USER
SETPOINT DESCRIPTION UNIT DEFAULT RANGE
Coo Summer mode first setpoint
°
C7.0 5÷18
Hea Winter mode first setpoint
°
C 45.0 35÷57
*San DHW mode setpoint
°
C 48.0 25÷57
Co2 Summer mode second setpoint
°
C 18.0 Coo÷23
He2 Winter mode second setpoint
°
C 35.0 25÷Hea
**rCO Mixer valve setpoint in Summer mode
°
C 15.0 -50.0÷80.0
rHE Mixer valve setpoint in Winter mode
°
C 30.0 -50.0÷80.0
ACS DHW instantaneous production setpoint
°
C 45.0 0.0÷80.0
(*) Adjustable Setpoint if the DHW function is enabled.
(**) Adjustable Setpoint if the optional KIE module is included.