COMFORT 15-14

Safety

Product description

Scope of delivery

Specification

Installation

Flushing and venting

Electrical connection

Electrical connection GB

Operating panel

Delivered condition

Service and replacement

Faults and remedies

Disposal

Declaration of conformity

Contact

These instructions apply to all specified product series and describe safe and appropriate use at all stages of operation.


Warnings and symbols


General safety information

  1. Installation, electrical connection and commissioning of the pump may be carried out only by qualified contractors and all general and local safety measures must be observed.
  2. Operating instructions and associated documents must be complete, legible and accessible at all times.
  3. Before carrying out work on the pump, read and ensure that you understand the operating instructions.
  4. This circulation pump is suitable only for water of potable quality.
  5. The pump should be operated only if it is in technically perfect condition. It must be used only in accordance with intended use, with an awareness of safety and risks, and in accordance with these instructions.
  6. Before any installation and maintenance work, disconnect the motor from the power supply and secure against reconnection.
  7. The use, cleaning and maintenance of this device by children aged 8 years or older, persons of restricted physical, sensory or mental capabilities, or persons with limited experience or knowledge is permitted only if they are supervised or instructed in the safe use of the device and understand the associated risks. Children must not be allowed to play with the device.

COMFORT pumps are efficient circulators designed for hot water recirculation in residential buildings.

These pumps feature a compact design housing and high-performance permanent magnet with an integrated control unit. The spherical rotor, equipped with an impeller, ensures optimal functionality, supported by a robust single-bearing ball system. The pump housing, crafted from drinking water approved brass, guarantees both safety and reliability.

Installation is easy with included cable for electrical connection.

The user-friendly interface, made with LED on the front, offers an intuitive platform to display control modes, ensuring a comfortable and energy-efficient experience for residential use.


Operation and Control modes

CONTINUOUS OPERATION 24/7

  1. The pump operates continuously while connected to the power supply.



GRUNDFOS DATA BOOKLET     

  1. Pump (integrated electrical cable with mains plug).
  2. Insulating shell for pump housing
  3. Quick Guide
  4. X variants includes shut-off and non-return valve
  5. GB variants doesn't include electrical cable and plug

Max. Flow rate

0.5 m3/h

Max. Head

1.2 m

Supply voltage

1 x 230 V / 50-60 Hz

Power consumption

5-7 W

Liquid temperature

2-95 °C

Enclosure Class

IP44

Appliance Class

Double insulated

Pump housing material

Brass

Permissible water hardness

Unrestricted

Dry-running protection

Yes

CAUTION! Ingress of water will cause physical damage!

  • Ensure that the cable entry and cable face downwards after installation.

  • Select a suitable installation site and permissible installation position.

  • Avoid exposing pumps with temperature mode, such as the T, TDT and TA, to heat:
    – Maintain a clearance of at least 50 cm from the DHW heater.
    – If the return line opens vertically into the cylinder, install the pump well away from the cylinder entry.

  • Fit external shut-off (isolating) valves if you need to be able to remove complete pump without draining the system. Integrated shut-off (isolating) valve in pump housing is enough for motor replacement.

  • If you are using additional non return or check valve, ensure that is installed in the direction of flow and that has low opening (cracking) pressure of max 0.2 kPa or 20 mbar.

  • Shut off valve and non-return valve integrated. Check port to port length, connection type and other dimensions.

  • Option valves on B pumps. (96433905, 96433904).

  • Electrical cable with mains plug included.
    Note:
    GB: Doesn’t inlcude cable and plug.
    CN: Has plug Type A.

  • Observe correct direction of flow.



DANGER! Pressurised system!

  • Before working on the motor or pump connections, close the shut-off valves.


  • When installing the pump, ensure that it is not under strain.

  • Tighten the fittings.

  • Rotate the pump control panel if necessary so that it is visible (cable exit underneath). To do so, slightly loosen the union nut …

  • … turn the motor …

  • … and retighten the union nut
    (max. 20 Nm).


  1. Fully separating the motor from the pump housing is only necessary for maintenance purposes (see chapters ‘Flushing and Venting’ and ‘Service and Replacement’).
  2. The pump has dry-running protection. If it runs largely in air, the PCB will repeatedly stop it to protect the rotor bearings. In a fully vented circulation circuit, the pump will run uninterrupted.

CAUTION! Dry-running will damage the bearings!

  • Flush the pipework thoroughly with water and vent it.


DANGER! Pressurised system!

  • Before working on the motor or pump connections, close the shut-off valves.


WARNING! Risk of scalding due to hot water!

  • Avoid direct contact with escaping hot water.
  • The pump housing can similarly reach a high temperature due to the hot medium being pumped.


  1. If no venting valve (fill & drain valve) is present, the system must be vented through the pump housing.

  • To vent, first close the shut-off valves.

  • Unscrew the motor from the pump housing …

  • … and screw the venting flange onto the motor (max. 20 Nm).

  • Open the shut-off valve upstream of the pump again and allow water to escape through the venting flange until the pipework is free of air.

  • Close the shut-off valve upstream of the pump …

  • … unscrew the venting flange from the pump …

  • … and reattach the motor to the pump housing.

  • Retighten the union nut
    (max. 20 Nm).

  • Slowly open the shut-off valves again.

  1. The pump is driven by a DC motor.
  2. The transformer for AC operation is built into the motor cap.
  3. Line cord is integrated in the pump.


DANGER! Electric shock can kill!

  • Work on the electrics must be carried out only by authorised contractors. 
  • Disconnect the pump from the power supply and secure against reconnection.
  • Check that no voltage is present.


WARNING! Risk of fire due to electrical ignition!

  • Ensure that the pump is connected only to the power supply specified on the nameplate.

  • To vent any remaining air, switch the pump on and off several times …

  • … and open the DHW tap several times …

  • … until the pump runs quietly.

  1. The pump is driven by a DC motor.
  2. The transformer for AC operation is built into the motor cap.
  3. Line cord is integrated in the pump.


DANGER! Electric shock can kill!

  • Work on the electrics must be carried out only by authorised contractors. 
  • Disconnect the pump from the power supply and secure against reconnection.
  • Check that no voltage is present.


WARNING! Risk of fire due to electrical ignition!

  • Ensure that the pump is connected only to the power supply specified on the nameplate.

  • The cable and mains plug must be purchased separately.

  • Round cable diameter 5-10 mm

  • Wire cross-section 1mm2
  • Strip 8.5-10 mm of insulator from the ends of the wires.
  • Twist the wire ends; do not use wire-end sleeves or tinned ends

  • No ground connection needed; the pump is double insulated.

  • To vent any remaining air, switch the pump on and off several times …

  • … and open the DHW tap several times …

  • … until the pump runs quietly.

 LED (1) Pump operation

  1. Pump operates continuously 24/7 unless it is controlled by an external control unit. 
  2. LED (1) Pump operation has steady green light.

DANGER! Electric shock can kill!

  • Before working on the pump, disconnect from the power supply and secure against reconnection.
  • Check that no voltage is present.


DANGER! Pressurised system!

  • Before working on the motor or pump connections, close the shut-off valves.


WARNING! Risk of scalding due to hot water!

  • Avoid direct contact with escaping hot water.
  • The pump housing can similarly reach a high temperature due to the hot medium being pumped.
  • Whenever the motor is opened up, replace the seal in the pump housing.

  • For maintenance, first close the shut-off valves.

  • Unscrew the motor from the pump housing …

  • … Carefully lift the rotor off the bearing pin.

  • Using a limescale remover, free the rotor and separating cap of limescale. Use only soft, non-metallic tools (e.g. brush, cloth, toothpick).

  • Reposition the rotor on the bearing pin.

  • Remove the old seal.

  • Insert new seal into the pump housing

  • … and reattach the motor to the pump housing.

  • Retighten the union nut
    (max. 20 Nm).

  • Slowly open the shut-off valves again.

  • To vent any remaining air, switch the pump on and off several times …

  • … and open the DHW tap several times …

  • … until the pump runs quietly.


The correct disposal of packaging in separate collection is fundamental for optimization of the recycling processes. The packaging materials should be correctly disposed of in separate collection, sorted and recycled according to the provisions of your local authority. The symbols included on the packaging material will help you to identify the material category to perform the correct separation.

See what packaging materials Grundfos products use and how to correctly dispose of them by clicking on this link:


How to correctly dispose of your packaging (PDF)

See also end-of-life information     

Argentina
Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km.
37.500 Centro Industrial
Garin 1619 Garín Pcia. de B.A.
Phone: +54-3327 414 444
Telefax: +54-3327 45 3190

Australia
GRUNDFOS Pumps Pty. Ltd.
P.O. Box 2040
Regency Park
South Australia 5942
Phone: +61-8-8461-4611
Telefax: +61-8-8340 0155

Austria
GRUNDFOS Pumpen
Vertrieb Ges.m.b.H.
Grundfosstraße 2
A-5082 Grödig/Salzburg
Tel.: +43-6246-883-0
Telefax: +43-6246-883-30

Belgium
N.V. GRUNDFOS Bellux S.A.
Boomsesteenweg 81-83
B-2630 Aartselaar
Tél.: +32-3-870 7300
Télécopie: +32-3-870 7301

Bosnia and Herzegovina
GRUNDFOS Sarajevo
Zmaja od Bosne 7-7A,
BH-71000 Sarajevo
Phone: +387 33 592 480
Telefax: +387 33 590 465
www.ba.grundfos.com
e-mail:

Brazil
BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar
Castelo Branco, 630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: +55-11 4393 5533
Telefax: +55-11 4343 5015

Bulgaria
Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street
no. 100
BG - 1592 Sofia
Tel. +359 2 49 22 200
Fax. +359 2 49 22 201
email:

China
GRUNDFOS Pumps
(Shanghai) Co. Ltd.
10F The Hub, No. 33 Suhong Road
Minhang District
Shanghai 201106 PRC
Phone: +86 21 612 252 22
Telefax: +86 21 612 253 33

Colombia
GRUNDFOS Colombia S.A.S.
Km 1.5 vía Siberia-Cota Conj.
Potrero Chico,
Parque Empresarial Arcos de
Cota Bod. 1A.
Cota, Cundinamarca
Phone: +57(1)-2913444
Telefax: +57(1)-8764586

Croatia
GRUNDFOS CROATIA d.o.o.
Buzinski prilaz 38, Buzin
HR-10010 Zagreb
Phone: +385 1 6595 400
Telefax: +385 1 6595 499
www.hr.grundfos.com

Czechia
Grundfos Sales Czechia and
Slovakia s.r.o.
Čajkovského 21
779 00 Olomouc
Phone: +420-585-716 111

Denmark
GRUNDFOS DK A/S
Martin Bachs Vej 3
DK-8850 Bjerringbro
Tlf.: +45-87 50 50 50
Telefax: +45-87 50 51 51
E-mail:
www.grundfos.com/DK

Estonia
GRUNDFOS Pumps Eesti OÜ
Peterburi tee 92G
11415 Tallinn
Tel: + 372 606 1690
Fax: + 372 606 1691

Finland
OY GRUNDFOS Pumput AB
Trukkikuja 1
FI-01360 Vantaa
Phone: +358-(0) 207 889 500

France
Pompes GRUNDFOS
Distribution S.A.
Parc d’Activités de Chesnes
57, rue de Malacombe
F-38290 St. Quentin Fallavier

(Lyon)
Tél.: +33-4 74 82 15 15
Télécopie: +33-4 74 94 10 51

Germany
GRUNDFOS GMBH
Schlüterstr. 33
40699 Erkrath
Tel.: +49-(0) 211 929 69-0
Telefax: +49-(0) 211 929
69-3799
e-mail: infoservice@
grundfos.de

Service in Deutschland:
e-mail:

Greece
GRUNDFOS Hellas A.E.B.E.
20th km. AthinonMarkopoulou Av.
P.O. Box 71
GR-19002 Peania
Phone: +0030-210-66 83 400
Telefax: +0030-210-66 46 273

Hong Kong
GRUNDFOS Pumps (Hong Kong) Ltd.
Unit 1, Ground floor
Siu Wai Industrial Centre
29-33 Wing Hong Street &
68 King Lam Street, Cheung

Sha Wan
Kowloon
Phone: +852-27861706 / 27861741
Telefax: +852-27858664

Hungary
GRUNDFOS Hungária Kft.
Tópark u. 8
H-2045 Törökbálint,
Phone: +36-23 511 110
Telefax: +36-23 511 111

India
GRUNDFOS Pumps India Private Limited
118 Old Mahabalipuram
Road
Thoraipakkam
Chennai 600 096
Phone: +91-44 2496 6800

Indonesia
PT. GRUNDFOS POMPA
Graha Intirub Lt. 2 & 3
Jln. Cililitan Besar No.454.
Makasar, Jakarta Timur
ID-Jakarta 13650
Phone: +62 21-469-51900
Telefax: +62 21-460 6910 / 460 6901

Ireland
GRUNDFOS (Ireland) Ltd.
Unit A, Merrywell Business Park
Ballymount Road Lower
Dublin 12
Phone: +353-1-4089 800
Telefax: +353-1-4089 830

Italy
GRUNDFOS Pompe Italia S.r.l.
Via Gran Sasso 4
I-20060 Truccazzano (Milano)
Tel.: +39-02-95838112
Telefax: +39-02-95309290 / 95838461

Japan
GRUNDFOS Pumps K.K.
1-2-3, Shin-Miyakoda,
Kita-ku,
Hamamatsu
431-2103 Japan
Phone: +81 53 428 4760
Telefax: +81 53 428 5005
Kazakhstan
GRUNDFOS Kazakhstan LLP
7’ Kyz-Zhibek Str., Kok-Tobe micr.
KZ-050020 Almaty
Kazakhstan
Phone: +7 (727) 227-98-55/56

Korea
GRUNDFOS Pumps Korea Ltd.
6th Floor, Aju Building 679-5
Yeoksam-dong, Kangnam-ku,
135-916
Seoul, Korea
Phone: +82-2-5317 600
Telefax: +82-2-5633 725

Latvia
SIA GRUNDFOS Pumps Latvia
Deglava biznesa centrs
Augusta Deglava ielā 60,
LV-1035, Rīga,
Tālr.: + 371 714 9640, 7 149 641
Fakss: + 371 914 9646

Lithuania
GRUNDFOS Pumps UAB
Smolensko g. 6
LT-03201 Vilnius
Tel: + 370 52 395 430
Fax: + 370 52 395 431

Malaysia
GRUNDFOS Pumps Sdn. Bhd.
7 Jalan Peguam U1/25
Glenmarie Industrial Park
40150 Shah Alam Selangor
Phone: +60-3-5569 2922
Telefax: +60-3-5569 2866

Netherlands
GRUNDFOS Netherlands
Veluwezoom 35
1326 AE Almere
Postbus 22015
1302 CA ALMERE
Tel.: +31-88-478 6336
Telefax: +31-88-478 6332
E-mail:

New Zealand
GRUNDFOS Pumps NZ Ltd.
17 Beatrice Tinsley Crescent
North Harbour Industrial Estate
Albany, Auckland
Phone: +64-9-415 3240
Telefax: +64-9-415 3250

Norway
GRUNDFOS Pumper A/S
Strømsveien 344
Postboks 235, Leirdal
N-1011 Oslo
Tlf.: +47-22 90 47 00
Telefax: +47-22 32 21 50

Poland
GRUNDFOS Pompy Sp. z o.o.
ul. Klonowa 23
Baranowo k. Poznania
PL-62-081 Przeźmierowo
Tel: (+48-61) 650 13 00
Fax: (+48-61) 650 13 50

Portugal
Bombas GRUNDFOS Portugal, S.A.
Rua Calvet de Magalhães, 241
Apartado 1079
P-2770-153 Paço de Arcos
Tel.: +351-21-440 76 00
Telefax: +351-21-440 76 90

Romania
Grundfos Pompe România SRL
S-PARK BUSINESS CENTER,
Clădirea A2,
etaj 2, Str. Tipografilor, Nr. 11-15,
Sector 1,
Cod 013714, Bucuresti, Romania,
Tel: 004 021 2004 100
E-mail:
www.grundfos.ro

Serbia
Grundfos Srbija d.o.o.
Omladinskih brigada 90b
11070 Novi Beograd
Phone: +381 11 2258 740
Telefax: +381 11 2281 769
www.rs.grundfos.com

Singapore
GRUNDFOS (Singapore) Pte. Ltd.
25 Jalan Tukang
Singapore 619264
Phone: +65-6681 9688
Telefax: +65-6681 9689

Slovakia
GRUNDFOS s.r.o.
Prievozská 4D
821 09 BRATISLAVA
Phona: +421 2 5020 1426
sk.grundfos.com

Slovenia
GRUNDFOS LJUBLJANA, d.o.o.
Leskoškova 9e, 1122 Ljubljana
Phone: +386 (0) 1 568 06 10
Telefax: +386 (0)1 568 06 19
E-mail:

South Africa
Grundfos (PTY) Ltd.
16 Lascelles Drive,
Meadowbrook Estate
1609 Germiston, Johannesburg
Tel.: (+27) 10 248 6000
Fax: (+27) 10 248 6002
E-mail:

Spain
Bombas GRUNDFOS España S.A.
Camino de la Fuentecilla, s/n
E-28110 Algete (Madrid)
Tel.: +34-91-848 8800
Telefax: +34-91-628 0465

Sweden
GRUNDFOS AB
Box 333 (Lunnagårdsgatan 6)
431 24 Mölndal
Tel.: +46 31 332 23 000
Telefax: +46 31 331 94 60

Switzerland
GRUNDFOS Pumpen AG
Bruggacherstrasse 10
CH-8117 Fällanden/ZH
Tel.: +41-44-806 8111
Telefax: +41-44-806 8115

Taiwan
GRUNDFOS Pumps (Taiwan) Ltd.
7 Floor, 219 Min-Chuan Road
Taichung, Taiwan, R.O.C.
Phone: +886-4-2305 0868
Telefax: +886-4-2305 0878

Thailand
GRUNDFOS (Thailand) Ltd.
92 Chaloem Phrakiat Rama
9 Road,
Dokmai, Pravej, Bangkok 10250
Phone: +66-2-725 8999
Telefax: +66-2-725 8998

Turkey
GRUNDFOS POMPA San. ve
Tic. Ltd. Sti.
Gebze Organize Sanayi Bölgesi
Ihsan dede Caddesi,
2. yol 200. Sokak No. 204
41490 Gebze/ Kocaeli
Phone: +90 - 262-679 7979
Telefax: +90 - 262-679 7905
E-mail:

Ukraine
Бізнес Центр Європа
Столичне шосе, 103
м. Київ, 03131, Україна
Телефон: (+38 044) 237 04 00
Факс.: (+38 044) 237 04 01
E-mail:

United Arab Emirates
GRUNDFOS Gulf Distribution
P.O. Box 16768
Jebel Ali Free Zone
Dubai
Phone: +971 4 8815 166
Telefax: +971 4 8815 136

United Kingdom
GRUNDFOS Pumps Ltd.
Grovebury Road
Leighton Buzzard/Beds. LU7 4TL
Phone: +44-1525-850000
Telefax: +44-1525-850011

Uzbekistan
Grundfos Tashkent, Uzbekistan
The Representative Office
of Grundfos Kazakhstan in
Uzbekistan
38a, Oybek street, Tashkent
Телефон: (+998) 71 150 3290 / 71 150 3291
Факс: (+998) 71 150 3292