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3

EN

ENGLISH

HK-HKM-25-32-IM-DE-W-UK-03-2021-Rev.3 | Part no. 10025988

2  Safety

2.1  Presentation of safety information

DANGER

DANGER indicates an imminent danger

that may cause serious physical injury or death if the appro-
priate safety precautions are not in place.

!

!

 

WARNING

WARNING indicates a danger arising

through incorrect behavior (e.g. misuse, disregarding noti-
ces, etc.) that may cause serious physical injury or death.

!

!

 

CAUTION

CAUTION indicates a potentially

dangerous situation that may cause minor or slight injuries if 
the appropriate safety precautions are not in place.

NOTICE

NOTE indicates a situation that may cause

material damage if the corresponding precautions are not 
taken.

2.2  Important safety instructions

•  Carefully read through these operating instructions.

•  Only connect the pump group to a power source that 

corresponds to the mains voltage specified on the rating 
plate of the pump group.

•  The power supply to the pump group must be 

disconnected prior to maintenance, cleaning and repair 
work.

•  Only trained specialist personnel are permitted to perform 

maintenance, cleaning and repair work.

•  The pump group must not be used if it is damaged or if the 

pump group is no longer operating correctly. In this case, 
contact your specialist dealer immediately.

•  Adhere to the maintenance instructions and intervals.

•  Protect the pump group from the influences of weather.

•  Never use the pump assembly outdoors.

•  The machine is only permitted to be used for the purpose 

for which it was intended.

2.3  Intended use

The pump group is used to distribute heating water in heating 
systems.

The pump group is completely pre-assembled and designed 
for mounting on a wall.

The pump group is not intended to be operated by people 
(including children) with physical, sensory or mental 
disabilities, nor by people with insufficient experience or 
previous knowledge.

2.4  Foreseeable misuse

The following is considered to be foreseeable misuse:

•  operating the pump group contrary to the specifications

•  improper use of the pump group

•  modifications to the pump group that were not agreed with 

the manufacturer

•  use of replacement or wear parts that were not approved 

by the manufacturer

•  operating the pump group outdoors (parts and 

components are not UV resistant)

2.5  Responsibilities of the operator

The operator must ensure that:

•  the pump group is only used for its intended purpose

•  the pump group is installed, operated and maintained 

according to the specifications in the Installation and 
Operating Manual

•  the pump group is only operated according to local 

regulations and occupational health and safety regulations

•  all precautionary measures have been carried out to avoid 

dangers originating from the pump group

•  all precautionary measures for first aid treatment and 

firefighting have been carried out

•  only authorized and trained users have access to the pump 

group and operate it

•  users have access to this Installation and Operating 

Manual at all times

2.6  Groups of persons

Only qualified persons may operate the pump group or 
perform service and maintenance work.

User

A user is deemed to be qualified if they have read these 
operating instructions and understood the potential risks 
associated with incorrect behavior.

Fitter/commissioner

Due to their specialist training and knowledge, and taking into 
consideration the applicable standards, provisions, regulations 
and laws, a fitter/commissioner is capable of performing work 
on the pump group and recognizing and avoiding potential 
risks

.

Summary of Contents for HK25 Series

Page 1: ...WattsWater eu Series HK HKM 25 32 Pump groups for unmixed and mixed heating circuits DN 25 and DN 32 Installation and Operating Manual translated from the original operating manual...

Page 2: ...t conformity A Declaration of Conformity according to the Machinery Directive 2006 42 EC has been issued for this pump group product 1 3 Product features stable mounting bracket including mounting har...

Page 3: ...for mounting on a wall The pump group is not intended to be operated by people including children with physical sensory or mental disabilities nor by people with insufficient experience or previous k...

Page 4: ...Axis center distance 125 mm Sealing surfaces distance 342 5 mm Connections to pipe network Heating circuit top HK25 HK25 KH HKM25 11 2 male connection flat sealaing Fitting 11 2 union nut x 1 female c...

Page 5: ...2 Pressure loss mbar 1 10 100 1 000 100 1 000 10 000 100 000 Flow rate l h HK25 HK25 KH HK32 Fig 4 1 Pressure loss curves HK25 HK25 KH and HK32 Pump mixing valve groups HKM25 HKM32 Pressure loss mbar...

Page 6: ...5 12 5 300 40 130 130 A A 125 G1 1 2 G1 1 2 15 342 5 12 5 300 40 HK25 HK32 HKM25 HKM32 A 1 F 11 4 F A 1 F 11 4 F Fig 5 1 Dimensions HK25 and HK32 Fig 5 2 Dimensions HKM25 and HKM32 125 G11 2 130 130 R...

Page 7: ...KH 1 Ball valve with gravity brake 1 supply 2 Ball valve return 3 Circulation pump 4 Wall bracket 5 Distance pipe 6 Additional ball valve only HK25 KH 7 Bypass connection pipe only HKM 8 3 way mixer...

Page 8: ...55 Nm 11 4 fittings 90 Nm 11 2 fittings 130 Nm 2 fittings 190 Nm Requirement The valves are pre installed at the factory but must be checked for leaks during commissioning pressure test 1 Dismantle th...

Page 9: ...er supply and secure it against being switched on again 2 Loosen the nuts on the pump bottom connection 3 Turn the pump and the flow ball valve by 180 degrees 4 Rotate the nut on the return ball valve...

Page 10: ...tools materials and other equipment used from the working area Vent the system 8 2 Replacement of wear parts Please note that the pump group contains parts that for technical reasons are subject to we...

Page 11: ...y mixer HKM 1 Replace damaged or defective seals if necessary 2 Install the 3 way mixer M and tighten the union nuts 3 Mount the motor S 4 Slowly open the ball valves by turning the thermometer handle...

Page 12: ...pump group properly or commission a specialist company to do so 3 Sort the assemblies and component parts into recyclable materials hazardous substances and operating materials 4 Dispose of the assemb...

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