COMFORT 15-14 TDT

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.

Equipped with built-in temperature sensor, the COMFORT pumps provide precision in maintaining water temperature.

Installation is easy with included cable for electrical connection.

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

Operation and Control modes

1. The pump operates based on set operating times and temperature mode, with operating times taking priority. This means that the temperature mode can only be active during the specified operating times.
2. LED indicators display the actual time (yellow), operating times (green), with the smallest time segment being 30 minutes. In case of a power failure, the time pauses with no power reserve. However, the selected operating times and actual time are retained. When power is restored, the pump resumes its last set operating state. If the power outage exceeds 15 minutes, the actual time may need to be reset.
3. When the temperature mode is enabled (indicated by a green temperature symbol LED), the pump measures water temperature during selected operating times. It automatically adjusts ON/OFF temperatures based on the maximum temperature measured in the system. For instance, if the maximum water temperature is measured at 45 °C, the pump switches OFF at temperatures above 41 °C and turns back ON when the water cools down to below 38 °C. The system's maximum temperature is measured every 12 hours during the first 15 minutes, allowing dynamic adjustment of ON/OFF temperatures.

For more details click on this link:

1. 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

CAUTION! Ingress of water will cause physical damage!

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

DANGER! Pressurised system!

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

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.

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.

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.

(1) Arrow button

(2) LED Temperature mode

(3) LED Setting mode

(4) LED Timer mode

(5) LED Pump operation

(6) LED Actual time

(7) LED Pump operating times

(8) Change button

(9) OK button

1. Pump operates
2. LED (4) Timer mode and LED (2) Temperature mode has steady green light.
3. Pump operation LED (5) has steady green light.
4. The yellow actual time LED (6) flashes at 06:00 AM (time segment 06:00 – 06:30 AM)
5. Selected operating times (7) are following:
- 06:00 – 09:00 AM
- 11:00 AM – 01:00 PM
- 05:00 – 09:00 PM

• Press Arrow button (1) until requested control mode is selected:

• Press Arrow button (1) repeatedly until the setting mode LED (3) has a steady green light. The actual time LED (6) has a flashing yellow light.

Confirm the time with OK (9). The actual time LED (6) has a steady yellow light. The operating time LED (7) 0:00 – 0:30 AM has a flashing green light.

Adding or deleting operating times

• Press the Change button (8) repeatedly until the flashing operating time LED is on the first required time segment (7) (e.g. 8:30 – 9:00 AM).

• To activate the time segment or delete an already activated time segment, press OK (9).
• The LED now has a steady green light or is off and the next time segment has a flashing green light (7).
• Activate this and subsequent time segments in the same way.

• To skip time segments, press the Change button (8) repeatedly. Then press OK (9) to activate or delete other time segments.

Example of a setting

1. The actual time LED (6) is between 4:00 and 4:30 PM.
2. Operating times (7):
   - 06:00 – 08:00 AM
   - 10:00 AM – 12:00 PM
   - 03:00 – 05:00 PM
   - 08:00 – 11:00 PM
   

• When you have set all times, press the Arrow button (1) to exit setting mode. Timer mode LED (4) lights up. The selected operating times are indicated.

• Press Arrow button (1) for 5 seconds. All LEDs lights up for 1 second.

The pump returns to the factory settings:

1. LED (4) Timer mode and LED (3) Temperature mode has steady green light.
2. Pump operation LED (5) has steady green light.
3. The yellow actual time LED (6) flashes at 06:00 AM (time segment 6:00 – 6:30 AM)
4. Selected operating times (7) are following:
- 06:00 – 09:00 AM
- 11:00 AM – 01:00 PM
- 05:00 – 09:00 PM

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.

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:

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