Riello NXH 005 Instrucciones de funcionamiento

NXH 005 - 015

cod.Doc-0096185rev.0 05/2020

EN INSTALLATION AND TECHNICAL SERVICE INSTRUCTIONS

NXH

COMPLIANCE

RNXH heat pumps are compliant with the following European Directives:

—Electromagnetic Compatibility Directive 2004/108 / EC and subsequent changes

—Machinery Directive 2006/42 / CE and subsequent changes

—ErP Directive 2009/125/EC and Regulation (EU) 813/2013

—RoHS Directive 2011/65/EU

—F-Gas Regulation 2014/517/EU

—WEEE Directive 2012/19/EU

RANGE

Model Code

NXH 005 20161608

NXH 007 20161610

NXH 011 20161611

NXH 015 20161612

NXH 011T 20161613

NXH 015T 20161614

ACCESSORIES

For the complete list of accessories and the information relating to their usage combinations, please refer to the catalogue.

Dear Technician,

We would like to congratulate you on having recommended a Runit: a modern product that is capable of ensuring maximum

comfort at length, with a high degree of reliability, efficiency, quality and safety.

While your technical skills and knowledge will certainly be more than sufficient, this booklet contains all the information that we

have deemed necessary for the device's correct and easy installation.

Thank you again, and keep up the good work.

RIELLO

NXH

TABLE OF CONTENTS

This booklet cod. Doc-0096185 rev. 0 (05/2020) consists of 68 pag-

es.

The following symbols are used in this publication:

WARNING = actions requiring special care and appropri-

ate training.

0 DO NOT = actions that MUST ON NO ACCOUNT be carried

out.

1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . .

p. 4

1.1 General Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 4

1.2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 4

1.3 Unit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 5

1.4 Safety and adjustment devices. . . . . . . . . . . . . . . . . .

p. 5

1.5 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 5

1.6 Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 6

1.7 Technical specifications . . . . . . . . . . . . . . . . . . . . . . .

p. 8

1.8 Performance based on the climatic zone . . . . . . . . . .

p. 9

1.9 Operating limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 10

1.10 Available static pressure. . . . . . . . . . . . . . . . . . . . . .

p. 10

1.11 Refrigerant circuit and sensors positioning. . . . . . . . .

p. 12

2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 13

2.1 Receiving the product . . . . . . . . . . . . . . . . . . . . . . . .

p. 13

2.2 Labels positioning . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 13

2.3 Dimensions and weight . . . . . . . . . . . . . . . . . . . . . . .

p. 13

2.4 Handling and removal of the packing . . . . . . . . . . . .

p. 14

2.5 Place of installation . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 14

2.6 Recommended distances. . . . . . . . . . . . . . . . . . . . . .

p. 15

2.7 Positioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 16

2.8 Installation on old systems or systems in need of

upgrading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 17

2.9 Hydraulic schemes . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 17

2.10 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . .

p. 18

2.11 System water filling and drainage . . . . . . . . . . . . . . .

p. 21

2.12 Wiring diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 22

2.13 Electrical connections . . . . . . . . . . . . . . . . . . . . . . .

p. 30

2.14 Control panel (ACCESSORY) . . . . . . . . . . . . . . . . . . . . .

p. 35

3 COMMISSIONING . . . . . . . . . . . . . . . . . . . . . . . .

p. 55

3.1 Preparation for first commissioning . . . . . . . . . . . . .

p. 55

3.2 Putting into service . . . . . . . . . . . . . . . . . . . . . . . . .

p. 55

3.3 Temporary shutdown. . . . . . . . . . . . . . . . . . . . . . . .

p. 55

3.4 Stop for an extended period of time . . . . . . . . . . . .

p. 55

3.5 Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 56

4 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 62

4.1 Ordinary maintenance . . . . . . . . . . . . . . . . . . . . . . .

p. 62

4.2 Tightening torque for main electrical connections . .

p. 63

4.3 Tightening torque for main screws and nuts . . . . . .

p. 63

4.4 Air side heat exchanger . . . . . . . . . . . . . . . . . . . . . .

p. 63

4.5 Plates heat exchanger maintenance . . . . . . . . . . . .

p. 63

4.6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

p. 64

4.7 Refrigerant volume . . . . . . . . . . . . . . . . . . . . . . . . .

p. 64

GENERAL INFORMATION

1.1

General Notices

When you get the product, check immediately that the con-

tents are all present and undamaged. Contact the dealer

Rif you notice any problems.

The product' s installation must be carried out by an au-

thorised company that will issue a declaration of the instal-

lation's conformity to the product's owner once the work

has been completed, indicating that the work has been car-

ried out in accordance with the standards of good practice,

current National and Local regulations, and the indications

provided by Rin the instruction booklet accompanying

the device.

The product must be used for its intended purpose, as stat-

ed by Rfor which it has been expressly manufactured.

Rshall bear no responsibility, whether of a contractual

or non-contractual nature, for any damage caused to peo-

ple, animals, or property due to incorrect installation, ad-

justments, or maintenance, or improper use.

Suitable clothing, instrumentation, and accident-preven-

tion devices must be utilized during the installation and/

or maintenance operations. Rshall bear no responsi-

bility for any failure to comply with current safety and acci-

dent-prevention regulations.

Comply with the legislation in force on the country of de-

ployment with regard to the use and disposal of packaging,

of cleaning and maintenance products and for the man-

agement of the unit's decommissioning.

Any repair and maintenance interventions must be carried

out by RTechnical Support Service, in accordance with

the provisions contained in this publication. Do not modify

or tamper with the unit as dangerous situations may arise

and the unit manufacturer will not be liable for any damage

caused.

The non-use of the appliance for a long period entails car-

rying out the operations described in the specific paragraph.

In the event of abnormal operation, or liquid leaks, set the

main switch of the system to "off" and close the shut-off

valves. Call the Technical Service promptlyRzone and do

not personally intervene on the appliance.

The units contain refrigerant gas: operate carefully so as to

avoid damaging the gas circuit and the fin bank.

Following the regulation EU UE n. 517/2014 on certain fluor-

inated greenhouse gases, is compulsory to indicate the re-

frigerant total amount in the installed system. >This infor-

mation is indicated on the unit nameplate.

This unit contains fluorinated greenhouse gases covered

by the Kyoto protocol. Maintenance and disposal activities

must be carried out exclusively by skilled personnel.

This unit can be installed in systems that require heating cy-

cles with anti-legionella function. It is mandatory to check

every single installation and complete it, where necessary,

with appropriate integration electric heaters in order to

guarantee the completion of the required sanitation cycles.

This booklet is an integral part of the device, and must

therefore be carefully preserved, and must ALWAYS accom-

pany it, even in the event that it is sold to another Owner

or User, or is transferred to another system. If it is damaged

or lost, another copy can be requested to RTechnical

Support Service in your Area.

1.2

Safety precautions

We remind you that the use of products that use electricity and

water involves the observance of some fundamental safety rules

such as:

0 Do not touch the unit while barefoot and/or partially wet.

0 Do not spray or throw water directly on the unit.

0 It is strictly forbidden to touch the coil fins, the moving parts,

to place any body parts between them, or to insert pointy

objects into the grilles.

0 It is forbidden to carry out any technical or cleaning work

before disconnecting the appliance from the power sup-

ply by placing the main switch of the system and the main

switch on the "OFF".

0 It is forbidden to modify the safety or regulation devices

without the authorisation of the manufacturer.

0 Do not pull, detach or twist the electrical wires coming out

of the unit, even when the unit is disconnected from the

power grid.

0 The packing material must not be disposed of in the sur-

rounding environment and must be kept out of children

reach, as it can be dangerous. It must be disposed of ac-

cording to the regulations in force.

GENERAL INFORMATION

1.3

Unit description

RNXH it is a range of heat pumps for the production

of hot water for space heating, domestic hot water for domes-

tic use (in combination with suitable boilers or exchangers) and

cold water for cooling.

Designed to be placed outdoors, it is suitable for use in residen-

tial and commercial applications.

The compressor, of the Rotary (NXH 005) or Twin-Rotary (NXH 007-

011-015) type, is regulated by the DC Inverter control with con-

tinuous power modulation. The compressor, working in combi-

nation with the electronic expansion valve, is therefore able to

guarantee maximum environmental comfort while maintaining

high energy standards.

The fans are driven by a permanent magnet synchronous motor

and are continuously modulated to obtain maximum perfor-

mance in all conditions of use, maximizing the silence of the

installation.

The hydronic module is always present and is supplied with a

variable speed circulation pump, flow switch, safety valve and

inlet and outlet water temperature probes.

The unit can be set and controlled by the remote control REC10CH,

the interface WUI, the free potential contacts or, if available, by

an existing modbus BMS.

1.4

Safety and adjustment devices

The safety and regulation of the appliance are obtained:

• on the cooling circuit with

—refrigerant temperature sensor on the compressor dis-

charge

—refrigerant temperature sensor on the compressor suction

• on the hydraulic circuit with

—water temperature sensors the detection of the water inlet

and outlet temperature

—flow switch to ensure unit operation with correct water

flow

—safety valve with intervention pressure 300 kPa

• The installer must necessarily provide in the system:

—a suitably sized expansion vessel

—a suitably sized technical water storage tank

—a by-pass valve between the delivery and return of the

appliance to allow the circulation of water in the unit even

if the same is isolated from the system. This serves to make

the antifreeze protection logics effective.

—a water filter entering the unit

—air vent valves in the highest points of the system

For further details refer to the chapter "Piping connec-

tions"

p. 20

Safety device replacement must be carried out by R

Technical Support Service, using only original components.

Please refer to the spare parts catalogue.

0 IT IS FORBIDDEN to operate the device with faulty safety sys-

tems.

1.5

Identification

The unit can be identified through the technical data plate:

XXXXXXXXXXX

XXX

Spain

XXXX

XXXXXXXX

XXX XX

XXXXXXXXXXX

Technical data plate

Contains the device's technical and performance data.

The tampering, removal, or absence of the identification

plates will not allow the product to be properly identified by

its serial number.

GENERAL INFORMATION

1.6

Layout

Model 005 - 007

1 Heat exchanger

2 Fan protection grille

3 Front panel

4 Compressor

5 Variable speed circulation pump

6 Electrical box

7 Flow switch

8 Circulation pump

9 Expansion vessel

10 Safety valve

11 Water inlet temperature probe

12 Pump release device

13 Water outlet temperature probe

14 Air bleeder valve

Model 011 - 015

1 Heat exchanger

2 Fan protection grille

3 Front panel

4 Compressor

5 Variable speed circulation pump

6 Reverse cycle valve

7 Electrical box

8 Flow switch

9 Expansion vessel

10 Safety valve

11 Water inlet temperature probe

12 Pump release device

13 Water outlet temperature probe

14 Air bleeder valve

GENERAL INFORMATION

Model 011T - 015T

1 Heat exchanger

2 Fan protection grille

3 Front panel

4 Compressor

5 Variable speed circulation pump

6 Reverse cycle valve

7 Electrical box

8 Flow switch

9 Expansion vessel

10 Safety valve

11 Water inlet temperature probe

12 Pump release device

13 Water outlet temperature probe

14 Air bleeder valve

GENERAL INFORMATION

1.7

Technical specifications

Model 005 007 011 015 011T 015T

Cooling performance [A35 / W7] (1)

Nominal capacity kW 4,00 5,55 11,20 12,80 10,65 13,00

EER kW/kW 3,10 3,10 3,40 3,10 3,40 3,20

SEER kW/kW 4,85 5,75 5,15 5,00 5,40 5,25

Seasonal energy efficiency (ns) %191 227 203 197 212 208

Cooling performance [A35/W18] (2)

Nominal capacity kW 4,85 8,00 13,70 16,00 13,75 17,00

EER kW/kW 4,35 4,00 4,60 4,10 4,65 4,15

Heating performance [A7/W55] (3)

Nominal capacity kW 4,45 6,75 11,20 11,65 10,25 11,80

COP kW/kW 2,80 2,70 2,95 2,90 3,00 3,00

SCOP kW/kW 3,32 3,36 3,35 3,45 3,34 3,40

Seasonal energy efficiency (ns) %130 131 131 135 131 133

Prated kW 3,00 4,00 9,00 10,00 9,00 11,00

Seasonal energy efficiency class A++

Heating performance [A7/W45] (4)

Nominal capacity kW 4,85 6,80 11,30 13,40 10,40 13,50

COP kW/kW 3,40 3,20 3,60 3,40 3,60 3,50

Heating performance [A7/W35] (5)

Nominal capacity kW 5,10 7,15 11,25 15,10 11,20 15,00

COP kW/kW 4,40 4,10 4,70 4,25 4,60 4,35

SCOP kW/kW 4,73 4,68 4,39 4,41 4,26 4,35

Seasonal energy efficiency (ns) %186 184 173 173 167 171

Electrical characteristics

Power supply V/ph/Hz+N 230/1/50 400/3/50

Permitted voltage V220 - 240 380 - 415

Total power input (6) kW 1,80 3,38 4,73 5,18 10,32 10,32

Full load current (7) A8,90 16,70 23,30 25,60 16,80 16,80

Compressor

Compressor Type Rotary

Minimum step %23 20 20 17 20 17

Refrigerant Type R410A

Refrigerant charge kg 1,10 1,60 2,80 2,80 3,00 3,00

Adjustment Type Inverter modulating valve

Fan

Fan Type Axial

Quantity no. 1 1 2 2 2 2

Maximum air flow m³/h 2880 2880 6480 6480 6480 6480

Maximum speed rpm 560 660 820 820 820 820

Plant side heat exchanger

Plant side heat exchanger Type With plates

Water content l1,7 2,3 4,4 4,4 4,4 4,4

Noise levels

Sound power level dB(A) 64 65 68 69 69 69

Sound pressure level dB(A) 33 34 37 38 38 38

Circulation pump

Type Variable speed centrifuge

Maximum operating pressure bar 333333

Maximum power input kW 0,075 0,14

Max. current input A0,60 0,60 1,10 1,10 1,10 1,10

(1) OAT: 35 °C, Water in/out: 12 / 7 °C

(2) OAT: 35 °C, Water in/out: 23 / 18 °C

(3) OAT: 7 °C b.s., 6 °C b.u. Water in/out: 47 / 55 °C

(4) OAT: 7 °C b.s., 6 °C b.u. Water in/out: 40 / 45 °C

(5) OAT: 7 °C b.s., 6 °C b.u. Water in/out: 30 / 35 °C

(6) Power absorbed by the compressors and fans at the limit operating conditions (i.e. with a saturated inlet temperature of 15 °C and a conden-

sation temperature equivalent to 68.3 °C) with a rated supply voltage of 400 V

(7) Maximum unit operating current

Performance are declared according to standards EN

14511:2018 and EN 14825:2016

The units are parameterized by default with limitation of the

maximum power delivered to 75%. It is possible to modify

this setting by acting on parameter 541 (adjustment range

50% -100%).

GENERAL INFORMATION

1.8

Performance based on the climatic zone

Model 005 007 011 015 011T 015T

Temperate zone - Average temperature [47 / 55 °C]

Seasonal energy efficiency (ns) %130 131 131 135 139 133

SCOP kW/kW 3,32 3,36 3,35 3,45 3,34 3,40

Pdesignh -7 °C kW 3,09 3,83 7,69 9,11 7,69 9,81

Pdesign at +2 °C kW 1,88 2,37 5,42 5,55 5,36 5,13

Pdesignh +7 °C kW 1,21 1,42 3,66 3,63 3,63 3,99

Pdesignh +12 °C kW 1,12 0,94 4,22 4,15 4,14 4,01

Annual energy cons. kWh/annum 2170 2651 5349 6159 5358 6734

Energy class A++

Sound power level dB(A) 64 65 68 69 69 69

Cold zone - Average temperature [30 / 35 °C]

Seasonal energy efficiency (ns) %186 184 173 173 167 171

Sound power level dB(A) 64 65 68 69 69 69

SCOP kW/kW 4,73 4,68 4,39 4,41 4,26 4,35

Pdesignh -7 °C kW 3,55 4,57 8,43 9,40 8,27 9,07

Pdesign at +2 °C kW 2,16 2,72 5,39 5,28 4,97 4,97

Pdesignh +7 °C kW 1,40 1,84 3,56 3,77 2,99 3,54

Pdesignh +12 °C kW 1,30 1,12 4,11 4,26 4,17 2,79

Annual energy cons. kWh/annum 1747 2273 4469 4967 4528 4858

Energy class A+++ A++

Warm zone - Average temperature [47 / 55 °C]

Seasonal energy efficiency (ns) %163 152 164 156 178 162

SCOP kW/kW 4,15 3,87 4,17 3,98 4,51 4,13

Pdesignh -7 °C kW ------

Pdesign at +2 °C kW 3,30 3,83 7,59 7,59 9,43 10,24

Pdesignh +7 °C kW 2,15 3,36 3,42 6,12 5,39 6,18

Pdesignh +12 °C kW 1,01 1,51 4,28 3,93 4,33 10,24

Annual energy cons. kWh/annum 1055 1317 2423 2539 2780 3300

Warm zone - Low temperature [30 / 35 °C]

Seasonal energy efficiency (ns) %230 259 230 225 232 225

SCOP kW/kW 5,83 6,54 5,83 5,73 5,87 5,71

Pdesignh -7 °C kW ------

Pdesign at +2 °C kW 3,60 5,00 8,70 10,20 8,40 9,80

Pdesignh +7 °C kW 2,33 3,86 5,53 7,24 5,61 7,32

Pdesignh +12 °C kW 1,15 1,77 4,23 4,19 4,27 4,23

Annual energy cons. kWh/annum 817 1013 1983 2376 1899 2283

Cold zone - Average temperature [47 / 55 °C]

Seasonal energy efficiency (ns) %100 111 109 107 112 108

SCOP kW/kW 2,57 2,84 2,80 2,75 2,86 2,78

Pdesignh -7 °C kW 3,35 5,06 7,85 8,32 8,06 8,51

Pdesign at +2 °C kW 2,04 3,08 5,55 5,27 5,60 5,32

Pdesignh +7 °C kW 1,33 1,99 3,39 3,41 3,42 3,45

Pdesignh +12 °C kW 1,14 1,43 4,23 4,13 4,28 4,17

Annual energy cons. kWh/annum 5078 6930 10922 11771 10951 11924

Cold zone - Low temperature [30 / 35 °C]

Seasonal energy efficiency (ns) %148 153 140 138 136 135

SCOP kW/kW 3,77 3,89 3,57 3,53 3,48 3,45

Pdesignh -7 °C kW 3,65 5,57 8,42 9,18 8,65 9,33

Pdesign at +2 °C kW 2,22 3,39 5,65 5,65 5,21 5,21

Pdesignh +7 °C kW 1,44 2,18 3,40 3,58 3,43 3,62

Pdesignh +12 °C kW 1,26 1,56 4,24 4,21 4,28 4,26

Annual energy cons. kWh/annum 3769 5566 9186 10118 9665 10527

Performance are declared according to standards EN

14511:2018 and EN 14825:2016

GENERAL INFORMATION

1.9

Operating limits

COOLING

A Outdoor air temperature

B Supply water temperature

C Model 005

A (°C)

b (°C)

-5

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

HEATING

A Outdoor air temperature

B Supply water temperature

b (°C)

A (°C)

-25

-15

-5

15 20 25 30 35 40 45 50 55 60 65

1.10

Available static pressure

NXH it is equipped with a variable speed circulation

pump.

For sizing the system, consider the residual head, shown below

in the graph.

MODEL 005

A Available head pressure

B Water flow

C High speed

D Medium speed

E Low speed

50 0,1 0,2 0,3 0,4

0,5

A (kPa)

b (l/s)

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