Grundfos iGRID, Installation And Operating Instructions Manual, Page: 4 / 83

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Hazard statements . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Target group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Product introduction. . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Product description of Pressure Zone . . . . . . . . . . . . . . 5
2.2 Product description of Temperature Zone . . . . . . . . . . . . 6
2.3 Pumped liquids . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Receiving the product . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Transporting the solution . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Inspecting the solution . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Handling and lifting the solution . . . . . . . . . . . . . . . . . . 8
4. Installation requirements . . . . . . . . . . . . . . . . . . . . . 8
4.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Mechanical installation . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Installing the solution . . . . . . . . . . . . . . . . . . . . . . . . 9
6. Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Temperature sensors in district heating pipes . . . . . . . . 10
6.2 Pressure sensors in district heating pipes . . . . . . . . . . . 10
6.3 Flow sensors in pipe connections . . . . . . . . . . . . . . . . 10
7. Electrical connection . . . . . . . . . . . . . . . . . . . . . . 10
7.1 Routing of cables. . . . . . . . . . . . . . . . . . . . . . . . . . 10
8. Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.1 Pump startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.2 Filling with district heating water. . . . . . . . . . . . . . . . . 11
8.3 Starting up the Pressure Zone . . . . . . . . . . . . . . . . . . 11
8.4 Starting up the Temperature Zone . . . . . . . . . . . . . . . 11
9. Servicing the solution . . . . . . . . . . . . . . . . . . . . . . 12
9.1 Accessing the solution . . . . . . . . . . . . . . . . . . . . . . 12
9.2 Replacing a pump . . . . . . . . . . . . . . . . . . . . . . . . . 12
9.3 Lifting a detached pump . . . . . . . . . . . . . . . . . . . . . 13
9.4 Replacing a non-return valve, gasket, fixture tap or flow
sensor in the pipe system . . . . . . . . . . . . . . . . . . . . 13
9.5 Replacing a pressure sensor in the pipe system . . . . . . . 13
9.6 Replacing a temperature sensor . . . . . . . . . . . . . . . . 13
9.7 Completing service work . . . . . . . . . . . . . . . . . . . . . 13
10. Taking the solution out of operation. . . . . . . . . . . . . 14
10.1 Removing the solution from the site . . . . . . . . . . . . . . 14
11. Disposing of the solution. . . . . . . . . . . . . . . . . . . . 14
1. General information
Read this document before you install the product. Instal-
lation and operation must comply with local regulations
and accepted codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
•
Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol indi-
cates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in mal-
function or damage to the equipment.
Tips and advice that make the work easier.
1.3 Target group
The product is designed for use as a pressure boosting unit
(Pressure Zone) or temperature mixing loop (Temperature Zone) in
a district heating transmission network. The product must be
operated by trained persons with knowledge of district heating
systems.
The product must be connected to an existing district heating
network according to local technical regulations. The connection is
handled by the local district heating company or its business
partners.
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English (GB)