Inhaltsverzeichnis; General Information; Hazard Statements; Notes - Grundfos iGRID Montage- Und Betriebsanleitung

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 . . . . . . . . . . . . . . . . . . . . . 9
4.1 Preparing the foundation . . . . . . . . . . . . . . . . . . . . . . 9
5. Mechanical installation . . . . . . . . . . . . . . . . . . . . . 10
5.1 Installing thesolution . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2 Level control of the drain pit . . . . . . . . . . . . . . . . . . . 13
6. Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 Pressure sensors in district heating pipes . . . . . . . . . . . 13
6.2 Flow sensors in pipe connections . . . . . . . . . . . . . . . . 13
7. Electrical connection . . . . . . . . . . . . . . . . . . . . . . 14
7.1 Installing the cables . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2 Routing of cables. . . . . . . . . . . . . . . . . . . . . . . . . . 14
8. Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1 Pump startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.2 Fillingwith district heating water . . . . . . . . . . . . . . . . . 14
8.3 Starting up the Pressure Zone . . . . . . . . . . . . . . . . . . 15
8.4 Starting up the Temperature Zone . . . . . . . . . . . . . . . 15
8.5 Completing installation work at the solution . . . . . . . . . . 15
9. Servicing the solution . . . . . . . . . . . . . . . . . . . . . . 15
9.1 Accessing thesolution . . . . . . . . . . . . . . . . . . . . . . . 16
9.2 Replacing a pump . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.3 Lifting a detached pump . . . . . . . . . . . . . . . . . . . . . 17
9.4 Replacing a non-return valve, gasket, fixture tap or flow
sensor in the pipe system . . . . . . . . . . . . . . . . . . . . 17
9.5 Replacing a pressure sensor in the pipe system . . . . . . . 17
9.6 Replacing a temperature sensor . . . . . . . . . . . . . . . . 17
9.7 Completing servicework. . . . . . . . . . . . . . . . . . . . . . 17
10. Taking the solution out of operation. . . . . . . . . . . . . 18
10.1 The pit is removed from the hole . . . . . . . . . . . . . . . . 18
10.2 The pit remains in the hole . . . . . . . . . . . . . . . . . . . . 18
11. Disposing of the solution. . . . . . . . . . . . . . . . . . . . 18
4

1. General information

Read this document before you install the product.
Installation 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
indicates 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
malfunction 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.