Rotex Hpu ground User manual

Installation manual

ROTEX HPU ground English

Installation manual

ROTEX HPU ground

RGSQH10S18AA9W

3P351751-2

CE - DECLARATION-OF-CONFORMITY CE - DECLARACION-DE-CONFORMIDAD CE - DECLARAÇÃO-DE-CONFORMIDADE CE - ERKLÆRING OM-SAMSVAR CE - IZJAVA-O-USKLAĐENOSTI CE - IZJAVA O SKLADNOSTI CE - ATITIKTIES-DEKLARACIJA

CE - KONFORMITÄTSERKLÄRUNG CE - DICHIARAZIONE-DI-CONFORMITA CE - ЗАЯВЛЕНИЕ-О-СООТВЕТСТВИИ CE - ILMOITUS-YHDENMUKAISUUDESTA CE - MEGFELELŐSÉGI-NYILATKOZAT CE - VASTAVUSDEKLARATSIOON CE - ATBILSTĪBAS-DEKLARĀCIJA

CE - DECLARATION-DE-CONFORMITE CE - ΔHΛΩΣΗ ΣΥΜΜΟΡΦΩΣΗΣ CE - OVERENSSTEMMELSESERKLÆRING CE - PROHLÁŠENÍ-O-SHODĚ CE - DEKLARACJA-ZGODNOŚCI CE - ДЕКЛАРАЦИЯ-ЗА-СЪОТВЕТСТВИЕ CE - VYHLÁSENIE-ZHODY

CE - CONFORMITEITSVERKLARING CE - FÖRSÄKRAN-OM-ÖVERENSTÄMMELSE CE - DECLARAŢIE-DE-CONFORMITATE CE - UYGUNLUK-BEYANI

ROTEX

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declares under its sole responsibility that the equipment to which this declaration relates:

erklärt auf seine alleinige Verantwortung daß die Ausrüstung für die diese Erklärung bestimmt ist:

déclare sous sa seule responsabilité que l'équipement visé par la présente déclaration:

verklaart hierbij op eigen exclusieve verantwoordelijkheid dat de apparatuur waarop deze verklaring betrekking heeft:

declara bajo su única responsabilidad que el equipo al que hace referencia la declaración:

dichiara sotto la propria responsabilità che gli apparecchi a cui è riferita questa dichiarazione:

δηλώνει με αποκλειστική της ευθύνη ότι ο εξοπλισμός στον οποίο αναφέρεται η παρούσα δήλωση:

declara sob sua exclusiva responsabilidade que os equipamentos a que esta declaração se refere:

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12

13

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заявляет, исключительно под свою ответственность, что оборудование, к которому относится настоящее заявление:

erklærer under eneansvarlig, at udstyret, som er omfattet af denne erklæring:

deklarerar i egenskap av huvudansvarig, att utrustningen som berörs av denna deklaration innebär att:

erklærer et fullstendig ansvar for at det utstyr som berøres av denne deklarasjon innebærer at:

ilmoittaa yksinomaan omalla vastuullaan, että tämän ilmoituksen tarkoittamat laitteet:

prohlašuje ve své plné odpovědnosti, že zařízení, k němuž se toto prohlášení vztahuje:

izjavljuje pod isključivo vlastitom odgovornošću da oprema na koju se ova izjava odnosi:

teljes felelőssége tudatában kijelenti, hogy a berendezések, melyekre e nyilatkozat vonatkozik:

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deklaruje na własną i wyłączną odpowiedzialność, że urządzenia, których ta deklaracja dotyczy:

declară pe proprie răspundere că echipamentele la care se referă această declaraţie:

z vso odgovornostjo izjavlja, da je oprema naprav, na katero se izjava nanaša:

kinnitab oma täielikul vastutusel, et käesoleva deklaratsiooni alla kuuluv varustus:

декларира на своя отговорност, че оборудването, за коeто се отнася тази декларация:

visiška savo atsakomybe skelbia, kad įranga, kuriai taikoma ši deklaracija:

ar pilnu atbildību apliecina, ka tālāk aprakstītās iekārtas, uz kurām attiecas šī deklarācija:

vyhlasuje na vlastnú zodpovednosť, že zariadenie, na ktoré sa vzťahuje toto vyhlásenie:

tamamen kendi sorumluluǧunda olmak üzere bu bildirinin ilgili olduǧu donanımının aşaǧıdaki gibi olduǧunu beyan eder:

RGSQH10S18AA9W,

are in conformity with the following standard(s) or other normative document(s), provided that these are used in accordance with our instructions:

der/den folgenden Norm(en) oder einem anderen Normdokument oder -dokumenten entspricht/entsprechen, unter der Voraussetzung, daß sie gemäß

unseren Anweisungen eingesetzt werden:

sont conformes à la/aux norme(s) ou autre(s) document(s) normatif(s), pour autant qu'ils soient utilisés conformément à nos instructions:

conform de volgende norm(en) of één of meer andere bindende documenten zijn, op voorwaarde dat ze worden gebruikt overeenkomstig onze

instructies:

están en conformidad con la(s) siguiente(s) norma(s) u otro(s) documento(s) normativo(s), siempre que sean utilizados de acuerdo con nuestras

instrucciones:

sono conformi al(i) seguente(i) standard(s) o altro(i) documento(i) a carattere normativo, a patto che vengano usati in conformità alle nostre istruzioni:

είναι σύμφωνα με το(α) ακόλουθο(α) πρότυπο(α) ή άλλο έγγραφο(α) κανονισμών, υπό την προϋπόθεση ότι χρησιμοποιούνται

σύμφωνα με τις οδηγίες μας:

estão em conformidade com a(s) seguinte(s) norma(s) ou outro(s) documento(s) normativo(s), desde que estes sejam utilizados de

acordo com as nossas instruções:

соответствуют следующим стандартам или другим нормативным документам, при условии их использования согласно нашим инструкциям:

overholder følgende standard(er) eller andet/andre retningsgivende dokument(er), forudsat at disse anvendes i henhold til vore instrukser:

respektive utrustning är utförd i överensstämmelse med och följer följande standard(er) eller andra normgivande dokument, under förutsättning att

användning sker i överensstämmelse med våra instruktioner:

respektive utstyr er i overensstemmelse med følgende standard(er) eller andre normgivende dokument(er), under forutssetning av at disse brukes i

henhold til våre instrukser:

vastaavat seuraavien standardien ja muiden ohjeellisten dokumenttien vaatimuksia edellyttäen, että niitä käytetään ohjeidemme mukaisesti:

za předpokladu, že jsou využívány v souladu s našimi pokyny, odpovídají následujícím normám nebo normativním dokumentům:

u skladu sa slijedećim standardom(ima) ili drugim normativnim dokumentom(ima), uz uvjet da se oni koriste u skladu s našim uputama:

megfelelnek az alábbi szabvány(ok)nak vagy egyéb irányadó dokumentum(ok)nak, ha azokat előírás szerint használják:

spełniają wymogi następujących norm i innych dokumentów normalizacyjnych, pod warunkiem że używane są zgodnie z naszymi instrukcjami:

sunt în conformitate cu următorul (următoarele) standard(e) sau alt(e) document(e) normativ(e), cu condiţia ca acestea să fie utilizate în conformitate cu

instrucţiunile noastre:

skladni z naslednjimi standardi in drugimi normativi, pod pogojem, da se uporabljajo v skladu z našimi navodili:

on vastavuses järgmis(t)e standardi(te)ga või teiste normatiivsete dokumentidega, kui neid kasutatakse vastavalt meie juhenditele:

съответстват на следните стандарти или други нормативни документи, при условие, че се използват съгласно нашите инструкции:

atitinka žemiau nurodytus standartus ir (arba) kitus norminius dokumentus su sąlyga, kad yra naudojami pagal mūsų nurodymus:

tad, ja lietoti atbilstoši ražotāja norādījumiem, atbilst sekojošiem standartiem un citiem normatīviem dokumentiem:

sú v zhode s nasledovnou(ými) normou(ami) alebo iným(i) normatívnym(i) dokumentom(ami), za predpokladu, že sa používajú v súlade snašim

návodom:

ürünün, talimatlarımıza göre kullanılması koşuluyla aşağıdaki standartlar ve norm belirten belgelerle uyumludur:

EN60335-2-40,

following the provisions of:

gemäß den Vorschriften der:

conformément aux stipulations des:

overeenkomstig de bepalingen van:

siguiendo las disposiciones de:

secondo le prescrizioni per:

με τήρηση των διατάξεων των:

de acordo com o previsto em:

в соответствии с положениями:

under iagttagelse af bestemmelserne i:

enligt villkoren i:

gitt i henhold til bestemmelsene i:

noudattaen määräyksiä:

za dodržení ustanovení předpisu:

prema odredbama:

követi a(z):

zgodnie z postanowieniami Dyrektyw:

în urma prevederilor:

ob upoštevanju določb:

vastavalt nõuetele:

следвайки клаузите на:

laikantis nuostatų, pateikiamų:

ievērojot prasības, kas noteiktas:

održiavajúc ustanovenia:

bunun koşullarına uygun olarak:

Low Voltage 2006/95/EC

Electromagnetic Compatibility 2004/108/EC *

Directives, as amended.

Direktiven, gemäß Änderung.

Directives, telles que modifiées.

Richtlijnen, zoals geamendeerd.

Directivas, según lo enmendado.

Direttive, come da modifica.

Οδηγιών, όπως έχουν τροποποιηθεί.

Directivas, conforme alteração em.

Директив со всеми поправками.

Direktiver, med senere ændringer.

Direktiv, med företagna ändringar.

Direktiver, med foretatte endringer.

Direktiivejä, sellaisina kuin ne ovat muutettuina.

v platném znění.

Smjernice, kako je izmijenjeno.

irányelv(ek) és módosításaik rendelkezéseit.

z późniejszymi poprawkami.

Directivelor, cu amendamentele respective.

Direktive z vsemi spremembami.

Direktiivid koos muudatustega.

Директиви, с техните изменения.

Direktyvose su papildymais.

Direktīvās un to papildinājumos.

Smernice, v platnom znení.

Değiştirilmiş halleriyle Yönetmelikler.

01Note*

02Hinweis*

03Remarque*

04Bemerk*

05Nota*

as set out in <A> and judged positively by

according to the Certificate<C>.

wie in <A> aufgeführt und von positiv

beurteilt gemäß Zertifikat<C>.

tel que défini dans <A> et évalué positivement par

conformément au Certificat<C>.

zoals vermeld in <A> en positief beoordeeld door

overeenkomstig Certificaat<C>.

como se establece en <A> y es valorado

positivamente por de acuerdo con el

Certificado<C>.

06Nota*

07Σημείωση*

08Nota*

09Примечание*

10Bemærk*

delineato nel <A> e giudicato positivamente da

secondo il Certificato<C>.

όπως καθορίζεται στο <A> και κρίνεται θετικά

από το σύμφωνα με το Πιστοποιητικό<C>.

tal como estabelecido em <A> e com o parecer positivo

de de acordo com o Certificado<C>.

как указано в <A> и в соответствии сположительным

решением согласно Свидетельству<C>.

som anført i <A> og positivt vurderet af ihenhold til

Certifikat<C>.

11Information*

12Merk*

13Huom*

14Poznámka*

15Napomena*

enligt <A> och godkänts av enligt

Certifikatet<C>.

som det fremkommer i <A> og gjennom positiv

bedømmelse av ifølge Sertifikat<C>.

jotka on esitetty asiakirjassa <A> ja jotka

on hyväksynyt Sertifikaatin<C> mukaisesti.

jak bylo uvedeno v <A> a pozitivně zjištěno

vsouladu sosvědčením<C>.

kako je izloženo u <A> i pozitivno ocijenjeno odstrane

prema Certifikatu<C>.

16Megjegyzés*

17Uwaga*

18Notă*

19Opomba*

20Märkus*

a(z) <A> alapján, a(z) igazolta a megfelelést, a(z)

<C>tanúsítvány szerint.

zgodnie z dokumentacją <A>, pozytywną

opinią i Świadectwem<C>.

aşa cum este stabilit în <A> şi apreciat pozitiv de

în conformitate cu Certificatul<C>.

kot je določeno v <A> in odobreno s strani

vskladu scertifikatom<C>.

nagu on näidatud dokumendis <A> ja heaks kiidetud

järgi vastavalt sertifikaadile<C>.

21Забележка*

22Pastaba*

23Piezīmes*

24Poznámka*

25Not*

както е изложено в <A> и оценено положително от

съгласно Сертификата<C>.

kaip nustatyta <A> ir kaip teigiamai nuspręsta pagal

Sertifikatą<C>.

kā norādīts <A> un atbilstoši pozitīvajam vērtējumam

saskaņā ar sertifikātu<C>.

ako bolo uvedené v <A> a pozitívne zistené vsúlade

s osvedčením<C>.

<A>’da belirtildiği gibi ve <C>Sertifikasına göre

tarafından olumlu olarak değerlendirildiği gibi.

<A>

<C>

DEKRA (NB0344)

2082543.0551-QUA/EMC

TCF.025E19/07-2013

Dr.-Ing. Franz Grammling

Managing Director

1st of March 2014

Table of Contents

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

Table of Contents

1 About the documentation 3

1.1 About this document.................................................................. 3

2 About the box 3

2.1 Indoor unit ................................................................................. 3

2.1.1 To remove the accessories from the indoor unit......... 3

3 Preparation 4

3.1 Preparing installation site .......................................................... 4

3.1.1 Installation site requirements of the indoor unit .......... 4

3.2 Preparing piping ........................................................................ 4

3.2.1 To check the water volume and flow rate of the

space heating circuit and brine circuit......................... 4

3.3 Preparing electrical wiring ......................................................... 4

3.3.1 Overview of electrical connections for external and

internal actuators ........................................................ 4

4 Installation 5

4.1 Opening the units ...................................................................... 5

4.1.1 To open the indoor unit............................................... 5

4.1.2 To open the switch box cover of the indoor unit ......... 5

4.2 Mounting the indoor unit............................................................ 5

4.2.1 To install the indoor unit.............................................. 5

4.3 Connecting the brine piping....................................................... 7

4.3.1 To connect the brine piping......................................... 7

4.3.2 To fill the brine circuit.................................................. 7

4.3.3 To insulate the brine piping......................................... 7

4.4 Connecting the water piping...................................................... 8

4.4.1 To connect the water piping........................................ 8

4.4.2 To connect the recirculation piping ............................. 8

4.4.3 To connect the drain hose .......................................... 8

4.4.4 To fill the space heating circuit.................................... 8

4.4.5 To fill the domestic hot water tank .............................. 8

4.4.6 To insulate the water piping........................................ 9

4.5 Connecting the electrical wiring................................................. 9

4.5.1 About electrical compliance ........................................ 9

4.5.2 To connect the electrical wiring on the indoor unit...... 9

4.5.3 To connect the main power supply ............................. 10

4.5.4 To connect the remote outdoor sensor....................... 11

4.5.5 To connect the user interface ..................................... 11

4.5.6 To connect the shut-off valve...................................... 12

4.5.7 To connect the electrical meters................................. 12

4.5.8 To connect the domestic hot water pump................... 12

4.5.9 To connect the alarm output ....................................... 12

4.5.10 To connect the space heating ON/OFF output ........... 13

4.5.11 To connect the changeover to external heat source... 13

4.5.12 To connect the power consumption digital inputs ....... 13

4.6 Finishing the indoor unit installation .......................................... 13

4.6.1 To fix the user interface cover to the indoor unit......... 13

4.6.2 To close the indoor unit............................................... 13

5 Configuration 13

5.1 Overview: Configuration ............................................................ 13

5.1.1 To access the most used commands ......................... 14

5.2 Basic configuration .................................................................... 15

5.2.1 Quick wizard: Language / time and date..................... 15

5.2.2 Quick wizard: Standard............................................... 15

5.2.3 Quick wizard: Options................................................. 15

5.2.4 Quick wizard: Capacities (energy metering) ............... 16

5.2.5 Space heating control ................................................. 16

5.2.6 Domestic hot water control ......................................... 17

5.2.7 Contact/helpdesk number........................................... 17

5.3 Advanced configuration/optimization......................................... 18

5.3.1 Space heating operation: advanced ........................... 18

5.3.2 Heat source settings ................................................... 18

5.3.3 System settings........................................................... 18

5.4 Menu structure: Overview installer settings................................ 19

6 Commissioning 20

6.1 Checklist before commissioning................................................. 20

6.2 Checklist during commissioning ................................................. 20

6.2.1 To check the minimum flow rate .................................. 20

6.2.2 To perform an air purge ............................................... 20

6.2.3 Air purge function on the brine circuit .......................... 20

6.2.4 To perform a test run ................................................... 21

6.2.5 To perform an actuator test run ................................... 21

6.2.6 To perform an underfloor heating screed dryout.......... 22

7 Hand-over to the user 22

7.1 To fix the applicable language on the unit name plate ............... 22

8 Technical data 23

8.1 Wiring diagram ........................................................................... 23

8.1.1 Wiring diagram: Indoor unit.......................................... 23

1 About the documentation

1.1 About this document

Target audience

Authorised installers

Documentation set

This document is part of a documentation set. The complete set

consists of:

▪General safety precautions:

▪ Safety instructions that you must read before installing

▪ Format: Paper (in the box of the indoor unit)

▪Indoor unit installation manual:

▪ Installation instructions

▪ Format: Paper (in the box of the indoor unit)

▪Installer reference guide:

▪ Preparation of the installation, technical specifications, good

practices, reference data,…

▪ Format: Digital files on the ROTEX homepage

▪Addendum book for optional equipment:

▪ Additional info about how to install optional equipment

▪ Format: Paper (in the box of the indoor unit) + Digital files on

the ROTEX homepage

Latest revisions of the supplied documentation may be available on

the regional ROTEX website or via your dealer.

The original documentation is written in English. All other languages

are translations.

2 About the box

2.1 Indoor unit

2.1.1 To remove the accessories from the

indoor unit

1Remove the screws at the top of the unit.

2Remove the top panel.

3 Preparation

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

4×

3Remove the accessories.

a1× b1× c1× d1×

f1×

e1× g1× h1×

aGeneral safety precautions

bAddendum book for optional equipment

cInstallation manual

dOperation manual

eRemote outdoor sensor

fUser interface kit cover

gMultilingual fluorinated greenhouse gases label

hCable for brine pressure switch connection

4Reinstall the top panel.

3 Preparation

3.1 Preparing installation site

3.1.1 Installation site requirements of the

indoor unit

▪ Mind the following spacing installation guidelines:

>500

≥50≥50

(mm)

▪ The indoor unit is designed for indoor installation only and for

ambient temperatures ranging from 5~30°C.

3.2 Preparing piping

3.2.1 To check the water volume and flow rate

of the space heating circuit and brine

circuit

Minimum water volume

Check that the total water volume per circuit in the installation is

minimum 20litre, the internal water volume of the indoor unit NOT

included.

INFORMATION

If a minimum heating load of 1kW can be guaranteed and

setting [9‑04] is changed by the installer from 1 to 4°C, the

minimum water volume can be lowered to 10litre.

INFORMATION

In critical processes, or in rooms with a high heat load,

extra water might be required.

NOTICE

When circulation in each space heating loop is controlled

by remotely controlled valves, it is important that the

minimum water volume is guaranteed, even if all of the

valves are closed.

Minimum flow rate

Check that the minimum flow rate (required during defrost/backup

heater operation) in the installation is guaranteed in all conditions.

NOTICE

When circulation in each or certain space heating loops is

controlled by remotely controlled valves, it is important that

the minimum flow rate is guaranteed, even if all valves are

closed. In case the minimum flow rate cannot be reached,

a flow error 7H will be generated (no heating/operation).

See the installer reference guide for more information.

Minimum required flow rate during backup heater operation

12l/min

See the recommended procedure as described in "6.2 Checklist

during commissioning"on page20.

3.3 Preparing electrical wiring

3.3.1 Overview of electrical connections for

external and internal actuators

Item Description Wires Maximum

running

current

Indoor unit power supply

1 Power supply for E1

and E3

3+N + GND (a)

2 Power supply for E2 2 (c)

4 Preferential kWh rate

power supply (voltage

free contact)

2(d)

5 Normal kWh rate power

supply

2 6.3A

User interface

6 User interface 2 (e)

Optional equipment

12 Room thermostat 3 or 4 100mA(b)

4 Installation

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

Item Description Wires Maximum

running

current

13 Outdoor ambient

temperature sensor

2(b)

14 Indoor ambient

temperature sensor

2(b)

15 Heat pump convector 4 100mA(b)

Field supplied components

16 Shut-off valve 2 100mA(b)

17 Electricity meter 2 (per meter) (b)

18 Domestic hot water

pump

2(b)

19 Alarm output 2 (b)

20 Changeover to external

heat source control

2(b)

22 Power consumption

digital inputs

2 (per input

signal)

(b)

(a) Refer to name plate on unit.

(b) Minimum cable section 0.75mm².

(d) Cable section 0.75mm² till 1.25mm²; maximum length:

50m. Voltage-free contact shall ensure the minimum

applicable load of 15VDC, 10mA.

(e) Cable section 0.75mm² till 1.25mm²; maximum length:

500m. Applicable for both single user interface and dual

use interface connection.

NOTICE

More technical specifications of the different connections

are indicated on the inside of the indoor unit.

4 Installation

4.1 Opening the units

4.1.1 To open the indoor unit

1Loosen and remove the screws at the bottom of the unit.

2Push on the button at the bottom of the front plate.

WARNING: Sharp edges

Take the front plate on the upper part instead of the lower

part. Watch your fingers, there are sharp edges on the

lower part of the front plate.

3Slide the front panel of the unit downwards and remove it.

CAUTION

The front panel is heavy. Be careful NOT to jam your

fingers when opening or closing the unit.

4Loosen and remove the 4 screws that fix the top panel.

5Remove the top panel from the unit.

4×

2×

4.1.2 To open the switch box cover of the

indoor unit

7×

4.2 Mounting the indoor unit

4.2.1 To install the indoor unit

1Bring the unit on the pallet as close as possible to its installation

place.

2Lift the indoor unit from the pallet and place it on the floor.

4 Installation

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

210kg

4×

3Slide the indoor unit into position. Make sure that the side

support bolts are present when handling the unit.

4Unlink the heat pump module from the outer frame. ONLY

remove the side support bolts!

2×

NOTICE

Do NOT throw away any bolts. They need to be re-inserted

when transport or heavy manipulation is required.

5Open the front plate of the unit. If needed, the nylon bands for

lifting can be used.

6Adjust the height of the 4 leveling feet of the outer frame to

compensate for floor irregularities. The maximum allowed

deviation is 1°.

≤1°

NOTICE

To avoid structural damage on unit, ONLY move the unit

when levelling feet are at their lowest position.

NOTICE

For optimum sound reduction, carefully check if there is no

gap between the bottom frame and the floor.

7Adjust the height of the 2 front leveling feet of the inner frame to

compensate for irregularities.

CAUTION

Check that the heat pump module does NOT touch the

outer casing.

4 Installation

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RGSQH10S18AA9W

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4P353879-1A – 2015.10

NOTICE

Check if the front support bolts remain levelled and are

NOT stressed. The support feet from outer (b) and inner

frame (c) MUST be adjusted so that those front bolts

remain level. Do NOT adjust support foot (a)!

Bottom view:

Side view:

INFORMATION

To check if the front support bolts are not stressed, loosen

them partly and fix them again afterwards.

4.3 Connecting the brine piping

4.3.1 To connect the brine piping

a b

aBrine out

bBrine in

NOTICE

To facilitate service and maintenance, it is recommended

to install shut-off valves as close as possible to the inlet

and outlet of the unit.

4.3.2 To fill the brine circuit

WARNING

Before, during and after filling carefully check the brine

circuit for leakage.

WARNING

Temperature of the fluid running through the evaporator

can become negative. It MUST be protected against

freezing. Refer to setting [A‑04] in "5.2.2 Quick wizard:

Standard"on page15.

INFORMATION

The materials used in the units brine circuit are chemically

resistant to the following anti-freeze fluids:

▪ 40 mass% propylene glycol

▪ 29 mass% ethanol

1Connect the unit to the field supplied brine filling system.

2Position the 3‑way valve correctly.

3Fill the circuit with brine until the manometer indicates a

pressure of ±2.0bar.

aBrine manometer

4Purge as much air as possible from the brine circuit. For

instructions, see "6Commissioning"on page20.

5Return the 3‑way valve to its original position.

4.3.3 To insulate the brine piping

The piping in the complete brine circuit MUST be insulated to

prevent reduction of the heating capacity.

4 Installation

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4P353879-1A – 2015.10

Consider that the brine circuit piping inside the house can/will

condensate. Foresee adequate insulation for these pipes.

4.4 Connecting the water piping

4.4.1 To connect the water piping

NOTICE

Do NOT use excessive force when connecting the piping.

Deformation of the piping can cause malfunctioning of the

unit.

1Connect the domestic hot water in and out pipes to the indoor

unit.

a c bd

aSpace heating water out

bSpace heating water in

cDomestic hot water out

dDomestic cold water in (cold water supply)

NOTICE

It is recommended to install shut-off valves to cold water in

and hot water out connections. Shut-off valves are field

supplied.

2Connect the space heating in and out pipes to the indoor unit.

4.4.2 To connect the recirculation piping

Prerequisite: Only required if you need recirculation in your system.

1Loosen and remove the screws at the bottom of the unit.

2Slide the front panel of the unit downwards and remove it.

3Loosen and remove the 4 screws that fix the top panel.

4Remove the top panel from the unit.

aKnock-out hole

bConnection for recirculation piping

5Remove the knock-out hole at the backside of the unit.

6Connect the recirculation piping to the recirculation connection

and route the piping through the knock-out hole at the backside

of the unit.

7Re-attach the insulation and casing.

4.4.3 To connect the drain hose

Condensate can form on the brine components inside the

compressor department of the unit. The unit contains a drain pan.

Depending on room ambient temperature, room humidity and

operation condition, the drain pan can overflow. A drain hose is

supplied with the unit.

The drain hose is routed to the backside on the left, close to the

bottom of the unit. A field supplied drain pump might be needed to

pump the water away to the field drain.

4.4.4 To fill the space heating circuit

1Connect the water supply hose to the fill valve (field supply).

2Open the fill valve.

3Make sure that the automatic air purge valve is open (at least 2

turns).

INFORMATION

For location of the air purge valve, see "Dimensions and

service space: Indoor unit" in chapter "8Technical data"on

page23.

INFORMATION

For location of the air purge valve, see "Dimensions and

service space: Indoor unit" in the installer reference guide.

4Fill the circuit with water until the manometer indicates a

pressure of ±2.0bar.

aWater manometer

5Purge as much air as possible from the water circuit.

NOTICE

▪ Air in the water circuit can cause malfunctioning of the

backup heater. During filling, it may not be possible to

remove all the air from the circuit. Remaining air will be

removed through the automatic air purge valves during

the initial operating hours of the system. Additional

filling with water afterwards may be required.

▪ To purge the system, use the special function as

described in the chapter "6 Commissioning" on

page 20. This function should be used to purge the

heat exchanger coil of the domestic hot water tank.

6Close the fill valve.

7Disconnect the water supply hose from the fill valve.

4.4.5 To fill the domestic hot water tank

1Open every hot water tap in turn to purge air from the system

pipe work.

4 Installation

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RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

2Open the cold water supply valve.

3Close all water taps after all air is purged.

4Check for water leaks.

5Manually operate the field-installed pressure relief valve to

ensure a free water flow through the discharge pipe.

4.4.6 To insulate the water piping

The piping in the complete water circuit MUST be insulated to

prevent reduction of the heating capacity.

4.5 Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION

WARNING

ALWAYS use multicore cable for power supply cables.

4.5.1 About electrical compliance

Equipment complying with EN/IEC 61000‑3‑12 (European/

International Technical Standard setting the limits for harmonic

currents produced by equipment connected to public low-voltage

systems with input current >16A and ≤75A per phase.).

4.5.2 To connect the electrical wiring on the

indoor unit

INFORMATION

Foresee additional cable length of 35cm for all wires which

should be connected to X2M and X5M on sheet metal

support above the hydro PCB. Additional wire length

should be tie wrapped at the back side of the unit. Reason

is to guarantee serviceability of, for example, the hydro

PCB.

1To open the indoor unit, see "4.1.1To open the indoor unit"on

page5 and "4.1.2 To open the switch box cover of the indoor

unit"on page5.

2Wiring should enter the unit from the top:

a c b

3Routing of the wiring inside the unit should be as follows:

1× 1×

a c b

a c

≥50 mm

1× 1×

≥50 mm

4 Installation

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ROTEX HPU ground

4P353879-1A – 2015.10

X5M X2M

X1 X2 X3 X4

YC Y1 Y2 Y3 Y4

11 12

1×

a c

NOTICE

▪ Make sure that 50mm is guaranteed between the low

voltage (a) and high voltage (c) cables.

▪ Make sure that the cables (a) and (c) are routed

between the wire guide and the backside of the switch

box to prevent water ingress.

4Fix the cable with cable ties to the cable tie mountings to

ensure strain relief and to make sure that it does NOT come in

contact with the piping and sharp edges.

Routing Possible cables (depending on unit type and installed options)

Low voltage

▪ Preferential power supply contact

▪ User interface

▪ Power consumption digital inputs (field supply)

▪ Outdoor ambient temperature sensor

▪ Indoor ambient temperature sensor (option)

▪ Electrical meters (field supply)

High voltage power supply

▪ Normal kWh rate power supply (power supply for unit)

High voltage control signal

▪ Preferential kWh rate power supply

▪ Heat pump convector (option)

▪ Room thermostat (option)

▪ Shut-off valve (field supply)

▪ Domestic hot water pump (field supply)

▪ Alarm output

▪ Changeover to external heat source control

CAUTION

Do NOT push or place redundant cable length in the unit.

4.5.3 To connect the main power supply

1Connect the main power supply.

In case of normal kWh rate power supply

X1M

X2M

X6YB

X6Y X6YA

X5M

X19AX1A

Legend: see illustration below.

In case of preferential kWh rate power supply

Connect X6Y to X6YB.

X1M

X2M

29 34

X6YB

X6YA

X6Y

X5M

X19AX1A

S1S LN

3 4

30 31

aMain power supply

bNormal kWh rate power supply

cPreferential power supply contact

2Fix the cable with cable ties to the cable tie mountings.

4 Installation

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RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

INFORMATION

In case of preferential kWh rate power supply, connect

X6Y to X6YB. The necessity of separate normal kWh rate

power supply to indoor unit (b) X2M30/31 depends on the

type of preferential kWh rate power supply.

Separate connection to the indoor unit is required:

▪ if preferential kWh rate power supply is interrupted

when active, OR

▪ if no power consumption of the indoor unit is allowed at

the preferential kWh rate power supply when active.

4.5.4 To connect the remote outdoor sensor

The remote outdoor sensor (delivered as accessory) measures the

outdoor ambient temperature.

INFORMATION

If the desired leaving water temperature is weather

dependent, the full time outdoor temperature measurement

is important.

1Connect the external temperature sensor cable to the indoor

unit.

X2M

X5M

2Fix the cable with cable ties to the cable tie mountings.

3Install the remote outdoor sensor outside as described in the

installation manual of the sensor (delivered as accessory).

4.5.5 To connect the user interface

▪ If you use 1 user interface, you can install it at the indoor unit (for

control close to the indoor unit), or in the room (when used as

room thermostat).

▪ If you use 2 user interfaces, you can install 1 user interface at the

indoor unit (for control close to the indoor unit) + 1 user interface

in the room (used as room thermostat).

The procedure differs slightly depending on where you install the

user interface.

# At the indoor unit In the room

1 Connect the user interface cable to the indoor unit.

Fix the cable with cable ties to the cable tie mountings.

X2M

X5M

a b

a Main user interface(a)

b Optional user interface

2 Insert a screwdriver into the slots underneath the user

interface and carefully separate the faceplate from the

wallplate.

The PCB is mounted in the faceplate of the user interface.

Be careful NOT to damage it.

3 Fix the wallplate of the user interface

to the sheet metal of the unit.

Be careful NOT to distort the shape

of the backside of the user interface

by overtightening the mounting

screws.

Fix the wallplate of

the user interface to

the wall.

4 Connect as shown in 4A. Connect as shown

in 4A, 4B, 4C or 4D.

5 Reinstall the faceplate onto the wallplate.

Be careful NOT to pinch the wiring when attaching the

frontplate to the unit.

(a) The main user interface is required for operation, but has to

be ordered separately (mandatory option).

4A From the rear

PCB

1×

4B From the left

PCB

1×

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4C From the top

PCB

1×

4D From the top centre

PCB

1×

aNotch this part for the wiring to pass through with nippers

etc.

bSecure the wiring to the front part of the casing using the

wiring retainer and clamp.

4.5.6 To connect the shut-off valve

1Connect the valve control cable to the appropriate terminals as

shown in the illustration below.

NOTICE

Wiring is different for a NC (normal closed) valve and a NO

(normal open) valve.

NO NC

X2M

X5M

67 5

X2M

X5M

M2SM2S

2Fix the cable with cable ties to the cable tie mountings.

4.5.7 To connect the electrical meters

INFORMATION

In case of an electrical meter with transistor output, check

the polarity. The positive polarity MUST be connected to

X5M/7 and X5M/9; the negative polarity to X5M/8 and

X5M/10.

1Connect the electrical meters cable to the appropriate terminals

as shown in the illustration below.

X2M

X5M

689

S2S S3S

2Fix the cable with cable ties to the cable tie mountings.

4.5.8 To connect the domestic hot water pump

1Connect the domestic hot water pump cable to the appropriate

terminals as shown in the illustration below.

X2M

X5M

3534

MM2P

2Fix the cable with cable ties to the cable tie mountings.

4.5.9 To connect the alarm output

1Connect the alarm output cable to the appropriate terminals as

shown in the illustration below.

X2M

X5M

A4P

aInstallation of EKRP1HB is required.

2Fix the cable with cable ties to the cable tie mountings.

5 Configuration

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4P353879-1A – 2015.10

4.5.10 To connect the space heating ON/OFF

output

1Connect the space heating ON/OFF output cable to the

appropriate terminals as shown in the illustration below.

X2M

X5M

A4P

aInstallation of EKRP1HB is required.

2Fix the cable with cable ties to the cable tie mountings.

4.5.11 To connect the changeover to external

heat source

1Connect the changeover to external heat source cable to the

appropriate terminals as shown in the illustration below.

X2M

X5M

A4P

aInstallation of EKRP1HB is required.

2Fix the cable with cable ties to the cable tie mountings.

4.5.12 To connect the power consumption digital

inputs

1Connect the power consumption digital inputs cable to the

appropriate terminals as shown in the illustration below.

X2M

X5M

A8P

S6S

S7S

S8S

S9S

1 2 3 4 5

aInstallation of EKRP1AHTA is required.

2Fix the cable with cable ties to the cable tie mountings.

4.6 Finishing the indoor unit

installation

4.6.1 To fix the user interface cover to the

indoor unit

1Make sure that the front panel is removed from the indoor unit.

See "4.1.1To open the indoor unit"on page5.

2Plug the user interface cover into the hinges.

3Mount the front panel to the indoor unit.

4.6.2 To close the indoor unit

1Close the switch box cover.

2Reinstall the top plate.

3Reinstall the front panel.

NOTICE

When closing the indoor unit cover, make sure that the

tightening torque does NOT exceed 4.1N•m.

5 Configuration

5.1 Overview: Configuration

This chapter describes what you have to do and know to configure

the system after it is installed.

5 Configuration

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

NOTICE

The explanation about the configuration in this chapter

gives you ONLY basic explanations. For more detailed

explanation and background information, see the installer

reference guide.

Why

If you do NOT configure the system correctly, it might NOT work as

expected. The configuration influences the following:

▪ The calculations of the software

▪ What you can see on and do with the user interface

How

You can configure the system via the user interface.

▪First time – Quick wizard. When you turn ON the user interface

for the first time (via the indoor unit), a quick wizard starts to help

you configure the system.

▪Afterwards. If necessary, you can make changes to the

configuration afterwards.

INFORMATION

When the installer settings are changed, the user interface

will request to confirm. When confirmed, the screen will

shortly turn OFF and "busy" will be displayed for several

seconds.

Accessing settings – Legend for tables

You can access the installer settings using two different methods.

However, NOT all settings are accessible via both methods. If so,

the corresponding table columns in this chapter are set to N/A (not

applicable).

Method Column in tables

Accessing settings via the breadcrumb in the

menu structure.

Accessing settings via the code in the

overview settings.

Code

See also table below (Alarm output

logic).

Alarm output logic

[C-09] Alarm No alarm No power

supply to unit

0 (default) Closed output Open output Open output

1 Open output Closed output

Demand PCB

# Code Description

[A.2.2.7] [D-04] Demand PCB

Indicates if the optional demand PCB is

installed.

▪ 0 (No)

▪ 1 (Pwr consmp ctrl)

Energy metering

# Code Description

[A.2.2.8] [D‑08] Optional external kWh meter1:

▪ 0 (No): NOT installed

▪ 1: Installed (0.1pulse/kWh)

▪ 2: Installed (1pulse/kWh)

▪ 3: Installed (10pulse/kWh)

▪ 4: Installed (100pulse/kWh)

▪ 5: Installed (1000pulse/kWh)

# Code Description

[A.2.2.9] [D‑09] Optional external kWh meter2:

▪ 0 (No): NOT installed

▪ 1: Installed (0.1pulse/kWh)

▪ 2: Installed (1pulse/kWh)

▪ 3: Installed (10pulse/kWh)

▪ 4: Installed (100pulse/kWh)

▪ 5: Installed (1000pulse/kWh)

5.2.4 Quick wizard: Capacities (energy

metering)

# Code Description

[A.2.3.2] [6‑03] Capacity of the first step of the backup

heater at nominal voltage [kW]

[A.2.3.3] [6‑04] Capacity difference between the second

and first step of the backup heater [kW]

5.2.5 Space heating control

Leaving water temperature: Main zone

# Code Description

[A.3.1.1.1] N/A Setpoint mode:

▪ 0 (Fixed): Absolute

▪ 1 (Weather dep.): Weather-

dependent

▪ 2 (Fixed/scheduled): Absolute +

scheduled (only for leaving water

temperature control)

▪ 3 (WD/scheduled): Weather-

dependent + scheduled (only for

leaving water temperature control)

[7.7.1.1] [1-00]

[1-01]

[1-02]

[1-03]

Weather‑dependent curve (heating):

[1-03]

[1-02]

[1-00] [1-01]

▪ Tt: Target leaving water temperature

(main)

▪ Ta: Outdoor temperature

Leaving water temperature: Additional zone

# Code Description

[A.3.1.2.1] N/A Setpoint mode:

▪ 0 (Fixed): Absolute

▪ 1 (Weather dep.): Weather-

dependent

▪ 2 (Fixed/scheduled): Absolute +

scheduled (only for leaving water

temperature control)

▪ 3 (WD/scheduled): Weather-

dependent + scheduled (only for

leaving water temperature control)

5 Configuration

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RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

# Code Description

[7.7.2.1] [0-00]

[0-01]

[0-02]

[0-03]

Weather‑dependent curve (heating):

[0-00]

[0-01]

[0-03] [0-02]

▪ Tt: Target leaving water temperature

(additional)

▪ Ta: Outdoor temperature

Leaving water temperature: Delta T source

# Code Description

[A.3.1.3.1] [9-09] Heating: required temperature

difference between entering and

leaving water.

In case a minimum temperature

difference is required for the good

operation of the heat emitters in heating

mode.

Leaving water temperature: Modulation

# Code Description

[A.3.1.1.5] [8-05] Leaving water temperature modulation:

▪ 0 (No): Disabled

▪ 1 (Yes): Enabled. The leaving water

temperature is calculated according

to the difference between desired

and actual room temperature.

This allows better matching of the

heat pump capacity to actual

required capacity and results in less

start/stop cycles of the heat pump

and more economic operation.

N/A [8-06] Leaving water temperature maximum

modulation:

0°C~10°C (default: 3°C)

Requires modulation to be enabled.

This is the value by which the desired

leaving water temperature is increased

or lowered.

INFORMATION

When leaving water temperature modulation is enabled,

the weather‑dependent curve needs to be set to a higher

position than [8-06] plus the minimum leaving water

temperature setpoint required to reach a stable condition

on the comfort setpoint for the room. To increase

efficiency, modulation can lower the leaving water setpoint.

By setting the weather‑dependent curve to a higher

position, it cannot drop below the minimum setpoint. Refer

to the illustration below.

+[8-06]

−[8-06]

aWeather-dependent curve

bMinimum leaving water temperature setpoint required to

reach a stable condition on the comfort setpoint for the

room.

Leaving water temperature: Emitter type

# Code Description

[A.3.1.1.7] [9-0B] Reaction time of the system:

▪ 0 (Quick)(default)

Example: Small water volume and

fan coils.

▪ 1 (Slow)

Example: Large water volume, floor

heating loops.

Depending on the system water volume

and the heat emitters type, the heat up

of a space can take longer. This setting

can compensate for a slow or a quick

heating system by adjusting the unit

capacity during the heat up cycle.

5.2.6 Domestic hot water control

# Code Description

[A.4.1] [6-0D] Domestic hot water Type:

▪ 0 (Reheat only): Only reheat operation

is allowed.

▪ 1 (Reheat + sched.)(default): Same as

2, but between the scheduled heatup

cycles, reheat operation is allowed.

▪ 2 (Scheduled only): The domestic hot

water tank can ONLY be heated

according to a schedule.

[A.4.5] [6-0E] The maximum temperature that users

can select for the domestic hot water.

You can use this setting to limit the

temperature at the hot water taps.

INFORMATION

There is a risk of space heating capacity shortage/comfort

problem (in case of frequent domestic hot water operation,

frequent and long space heating interruption will happen)

when selecting [6‑0D]=0 ([A.4.1] Domestic hot water

Type=Reheat only).

5.2.7 Contact/helpdesk number

# Code Description

[6.3.2] N/A Number that users can call in case of

problems.

5 Configuration

Installation manual

RGSQH10S18AA9W

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4P353879-1A – 2015.10

5.3 Advanced configuration/

optimization

5.3.1 Space heating operation: advanced

Room frost protection

NOTICE

If Emergency is set to Manual ([A.5.1.2]=0), and the unit is

triggered to start emergency operation, the user interface

will ask confirmation before starting. Room frost protection

is active even if the user does NOT confirm emergency

operation.

5.3.2 Heat source settings

Auto emergency

When the heat pump fails to operate the backup heater can serve as

an emergency heater and either automatically or non-automatically

take over the heat load. When auto emergency is set to Automatic

and a heat pump failure occurs, the backup heater will automatically

take over the heat load. When a heat pump failure occurs and auto

emergency is set to Manual the domestic hot water and space

heating operations will stop and need to be recovered manually. The

user interface will then ask you to confirm whether the backup heater

can take over the heat load or not. When the heat pump fails, will

appear on the user interface. If the house is unattended for longer

periods, we recommend that setting [A.5.1.2] Emergency shall be

set to Automatic.

# Code Description

[A.5.1.2] N/A Defines whether in an emergency

situation the backup heater is allowed to

automatically take over the entire heat

load or whether manual confirmation is

required.

▪ 0: Manual (default)

▪ 1: Automatic

INFORMATION

The auto emergency setting can be set in the menu

structure of the user interface only.

INFORMATION

If a heat pump failure occurs and [A.5.1.2] is set to Manual,

the room frost protection function, the underfloor heating

screed dryout function, and the water pipe antifreeze

function will remain active even if the user does NOT

confirm emergency operation.

5.3.3 System settings

Power consumption control

NOTICE

During periods of excessive capacity demand (example:

screed dryout function), the power limitation can be

activated in accordance to the dimension of the brine earth

collector.

5 Configuration

Installation manual

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5.4 Menu structure: Overview installer settings

[A]

[A.2]

[A.2.1]

[A.2.2]

[A.2.2.6]

[A.3]

[A.3.1]

[A.3.1.1]

[A.3.2]

[A.3.3]

[A.4]

[A.4.4]

[A.5]

[A.5.1]

[A.7]

[A.6]

[A.6.3]

[A.6.2]

Installer settings

Language

System layout

Space operation

Domestic hot water (DHW)

Heat sources

System operation

Commissioning

Overview settings

System layout

Standard

Options

Capacities

Confirm layout

Space operation

LWT settings

Room thermostat

Operation range

Domestic hot water

Type

Disinfection

Maximum setpoint

SP mode

Weather-dependent curve

Heat sources

Backup heater

System operation

Auto restart

Preferential kWh rate

Pwr consumpt. control

Averaging time

Ext amb. sensor offset

Commissioning

Test run

UFH screed dryout

Air purge

Actuator test run

Standard

Unit type

Compressor type

Indoor software type

BUH type

Preferential kWh rate

Unit control method

Number of LWT zones

Pump operation mode

Power saving possible

User interface location

Options

Contact type main

Contact type add.

Digital I/O PCB

Demand PCB

External kWh meter

DHW pump

External sensor

Leaving water

Main

Additional

Delta T source

Room thermostat

Room temp. range

Room temp. offset

Ext. room sensor offset

Operation range

Space heating OFF temp

Disinfection

Operation day

Start time

Temperature target

Duration

Backup heater

Operation mode

Emergency

Enable BUH step 2

Equilibrium temp.

Prefer. kWh rate PS

Allowed heaters

Forced pump OFF

Pwr consmp ctrl

Mode

Type

Amp. value

Amp. limits for DI

kW value

kW limits for DI

Priority

Digital I/O PCB

Ext. backup heat src

Solar kit

Alarm output

Main

LWT setpoint mode

Temperature range

Modulated LWT

Shut-off valve

Emitter type

[A.3.1.2] Additional

LWT setpoint mode

Temperature range

Room temp. step

Brine freezeup temp

[A.3.1.3] Delta T source

Heating

INFORMATION

Solar kit settings are shown but are NOT applicable for this

unit. Settings shall NOT be used or changed.

INFORMATION

Power saving settings are shown but are NOT applicable

for this unit. Settings shall NOT be used or changed.

INFORMATION

Depending on the selected installer settings, settings will

be visible/invisible.

6 Commissioning

Installation manual

RGSQH10S18AA9W

ROTEX HPU ground

4P353879-1A – 2015.10

6 Commissioning

NOTICE

NEVER operate the unit without thermistors and/or

pressure sensors/switches. Burning of the compressor

might result.

6.1 Checklist before commissioning

Do NOT operate the system before the following checks are OK:

You read the complete installation instructions, as

described in the installer reference guide.

The indoor unit is properly mounted.

The following field wiring has been carried out according

to this document and the applicable legislation:

▪ Between the local supply panel and the indoor unit

▪ Between the indoor unit and the valves (if applicable)

▪ Between the indoor unit and the room thermostat (if

applicable)

The system is properly earthed and the earth terminals

are tightened.

The fuses or locally installed protection devices are

installed according to this document, and have not been

bypassed.

The power supply voltage matches the voltage on the

identification label of the unit.

There are NO loose connections or damaged electrical

components in the switchbox.

There are NO damaged components or squeezed

pipes on the inside of the indoor unit.

There are NO refrigerant leaks.

The correct pipe size is installed and the pipes are

properly insulated.

There is NO water and/or brine leak inside the indoor

unit.

There are no odour traces noticeable of the used brine.

The space heating air purge valve is open (at least 2

turns).

The pressure relief valves purge to a safe location when

opened.

The minimum water volume is guaranteed in all

conditions. See "To check the water volume and flow rate

of the space heating circuit and brine circuit" in

"3.2Preparing piping"on page4.

6.2 Checklist during commissioning

The minimum flow rate during backup heater/defrost

operation is guaranteed in all conditions. See "To check

the water volume and flow rate of the space heating circuit

and brine circuit" in "3.2Preparing piping"on page4.

To perform an air purge.

To perform an air purge on the brine circuit.

To perform a test run.

To perform an actuator test run.

Underfloor screed dryout function

The underfloor screed dryout function is started (if

necessary).

6.2.1 To check the minimum flow rate

1Confirm according to the hydraulic configuration which space

heating loops can be closed due to mechanical, electronic, or

other valves.

2Close all space heating loops that can be closed (see previous

step).

3Start the pump test run operation (see "6.2.5 To perform an

actuator test run"on page21).

4Go to [6.1.8]: > Information > Sensor information > Flow rate

to check the flow rate. During pump test run operation, the unit

can operate below this minimum required flow rate that is

needed during defrost/backup heater operation.

Bypass valve foreseen?

Yes No

Modify the bypass valve setting

to reach the minimum required

flow rate + 2l/min

In case the actual flow rate is

below the minimum flow rate

(required during defrost/backup

heater operation), modifications

at hydraulic configuration are

required. Increase the space

heating loops that can NOT be

closed or install a pressure

controlled bypass valve.

Minimum required flow rate during backup heater operation

12l/min

6.2.2 To perform an air purge

Prerequisite: Make sure that the leaving water temperature home

page, room temperature home page, and domestic hot water home

page are turned OFF.

1Go to [A.7.3]: > Installer settings > Commissioning > Air

purge.

2Set the type.

3Select Start air purge and press .

4Select OK and press .

Result: The air purge starts. It stops automatically when done. To

stop it manually, press , select OK and press .

6.2.3 Air purge function on the brine circuit

When installing and commissioning the unit, it is very important to

remove all air from the brine circuit.

NOTICE

It is required that the brine circuit is filled BEFORE the

brine pump test run is activated.

There are 2 ways to perform an air purge:

▪ with a brine filling station (field supply),

▪ with a brine filling station (field supply) in combination with the

unit's own brine pump.

10‑day brine pump operation. If a brine buffer vessel is part of the

system, it may be required to let the brine pump run continuously for

10 days after the system is commissioned. If 10‑day brine pump

operation is:

▪ ON: The unit operates as normal, except that the brine pump

operates continuously for 10 days, independent of compressor

status.

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