Niche Switch - Pool Accessories ASTRALPOOL - Free user manual and instructions

Product Type	Pool fountain switch/niche
Brand	AstralPool
Model	Niche Switch
Part Numbers	66570, 66572
Input Voltage	24 V DC
Power Consumption	25 W
Maximum Working Pressure	4 bar
Hydraulic Inlet Connection	1-1/2" G threaded
Hydraulic Relief Connection	2" G threaded
Electrical Connection	1" G for wiring
Nozzle Compatibility	Spear nozzle ∅16 or ∅20 (not included)
LED Compatibility	LED with ∅220-∅240 mm between holes, body ≤∅200 mm
Material	Stainless steel and plastic
Water Temperature Range	4 °C to 35 °C
Water pH Range	6.9 to 7.8
Free Residual Chlorine	0.5 to 2.0 ppm
Total Alkalinity	80 to 120 ppm
Calcium Hardness	200 to 1000 ppm
Total Dissolved Solids	≤2000 ppm
Salt Level	≤2 g/l
Safety Features	Equipotential connection, RCD (30 mA), circuit breaker, H07RN-F cable
Protection Rating	IP68 for connectors
Dimensions (Approximate)	404 mm diameter × 498 mm height
Warranty	Refer to attached warranty certificate
Application	Pool fountains and ornamental water features

Frequently Asked Questions - Niche Switch ASTRALPOOL

Why is the water not reaching the desired height?

Check the pressure at the pump outlet. Ensure the pump is functioning correctly and the filter is not clogged. If the pressure is adequate, inspect the nozzle for obstructions.

Why is the water not coming out of the jet?

Verify that the unit is connected to the power supply and the control system is activating the correct valve. Check the fuse and wiring. Also inspect the nozzle for blockages.

Why is the jet not cutting when the relay is activated?

Check the wiring and connections between the relay and the electrovalve. Ensure the fuse is intact and the electrovalve is functioning properly. Verify the control system's relay activation frequency.

Why does the jet height change when other switches are activated in the same hydraulic circuit?

This is normal due to pressure variations. Install a relief regulation valve to stabilize the manifold pressure. Ensure all valves are properly adjusted.

What are the recommended water quality parameters for the unit?

Water temperature: 4–35 °C, pH: 6.9–7.8, free chlorine: 0.5–2.0 ppm, total alkalinity: 80–120 ppm, calcium hardness: 200–1000 ppm, TDS ≤2000 ppm, salt ≤2 g/l.

What is the maximum operating pressure of the Niche Switch?

The maximum working water pressure is 4 bar. Do not exceed this limit to avoid damaging the unit.

How often should I perform maintenance on the unit?

Activate the device at least once a month to check electrovalve operation. Inspect the inlet filter weekly. For stainless steel components, follow the separate maintenance manual.

What type of electrical cable is required for installation?

Use an H07RN-F type waterproof cable. The power supply must include an earth connection, an RCD (≤30 mA), and a properly sized circuit breaker.

Can the unit be installed in a windy area?

It is not recommended. Wind can displace the water jet. If installed in a windy area, consider using a wind guard or operating only in calm conditions.

What should I do if the unit freezes?

If the water temperature drops below 4 °C, empty the unit to prevent ice damage. Do not operate the unit when frozen.

USER MANUAL Niche Switch ASTRALPOOL

Exterior view of a cylindrical industrial component with flanged side and mounting brackets (no text or symbols visible)

Made in SPAIN

Fig. 2:66570

Fig. 1 66572

Cross-sectional diagram of a cylindrical industrial device with internal components and piping (no text or labels)

Line drawing of a cylindrical industrial vessel with mounting feet and a central circular opening (no text or symbols)

Technical line drawing of a mechanical assembly with mounting brackets and internal components (no text or symbols)

2.4 CONEXIONADO

2.4.1 Hidráulico

Technical line drawing of a mechanical assembly or enclosure with no visible text, numbers, or symbols.

Technical line drawing of a mechanical assembly or enclosure with no visible text or symbols

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Niche Switch L

1 GENERAL SAFETY 16

1.1 ELECTRICAL SAFETY 16
1.2 SAFETY IN USE AND CONTACT WITH WATER.... 16
1.3 OPERATION AND MAINTENANCE SAFETY 17

2 INSTALLATION AND ASSEMBLY 17

2.1 NOZZLE 17
2.2 LEDS 17
2.3 FASTENING AND LEVELING 18
2.4 WIRING AND PIPING 21

8 PRODUCT LABELLING 26

1 GENERAL SAFETY

1.1 ELECTRICAL SAFETY

• Disconnect the unit from the power supply before doing any assembly or maintenance jobs.
• Do not touch or get into the water while the unit is connected to the power supply.
• Use an H07RN-F type waterproof cable.
• Connect the unit to an equipotential connection. Make use of one of the unit's fastening points below the niche supports (⑥).
• Connect the unit to a power supply with an earth connection, protected by the following components:
• An RCD safety switch with a maximum residual current of 30 mA.
• A circuit breaker fuse properly sized according to the power consumption of the unit.

1.2 SAFETY IN USE AND CONTACT WITH WATER

- The fountain water must be under the following conditions:

Water characteristics	Minimum value	Maximum value
Temperature	4 °C	35 °C
pH	6.9	7.8
Free residual chlorine	0.5 ppm 2.0 ppm
Total alkalinity (TAC)	80 ppm 120 ppm
Calcium hardness (CH)	200 ppm 1,000 ppm
Salt level	-	2 g/l
Total dissolved solids (TDS)	- 2,000 ppm

• If the temperature is below 4 °C , empty the unit to prevent it from breaking due to the formation of ice inside it.
• Do not tamper with the factory-fitted waterproof seals. Otherwise, the unit could lose its warranty.

- Put up signs around the fountain in line with the country's or local regulations. Examples of warnings:

• “Water unsafe to drink” “Bathing is forbidden” “Risk of electric shock”.

• Area unfit for road traffic (with or without niche)

• Do not open or handle any of the unit's components other than those for which explanations are given in this manual. Otherwise, the unit could lose its warranty

• Do not handle the unit with damp or wet hands.
• The unit may only be handled by authorised personnel or qualified service engineers. Do not allow unauthorised personnel or unqualified service engineers to handle it.

2 INSTALLATION AND ASSEMBLY

IMPORTANT:

• Read the whole manual carefully before installing the unit.
• Check that device is in good state of repair when removing the packaging.
• Identify all the components prior to their installation.
• Avoiding warnings on this user's guide can lead to improper handling and breakage of the unit, so the product will lose its warranty.

2.1 NOZZLE

Appropriate nozzles for the unit are:

• Spear Nozzle ∅16 (66644)
• Spear Nozzle ∅20 (66645)
• Another nozzle type with not a 1-1/2" G thread, needs an extra accessory.

2.2 LEDS

WARNING: Niche is compatible with leds with 2 screws fixation from ∅220mm to ∅240mm between holes and with a body diameter less than ∅200mm.

Led is placed on central die-cut of niche's top cover plate (position ⑧).

Use screws on two slots for fastening the led on the central part of the cover plate. (slots are distanced from 220mm to 240mm between them).

2.3 FASTENING AND LEVELLING THE UNIT

WARNING: It is highly recommended to install Switch inside Niche before embedding it.

WARNING: Risk of unit damage. Unit relief (⑦) has to go to the water reservoir, so it needs a watertight installation to return to the fountain circuit.

2.3.1 Switch fixation to Niche

Switch fixation (A) to niche needs to be done in the following way (See figure):

1- Mount nozzle (B) on Switch (A) using 1-1/2" top thread.
2- Install the elbow (D) on Switch (A) making sure it finishes directed to the opposite side of the Switch's relief.
3- Untight screws from underneath Switch's cover (A) in order to manage fixation on the omega's slots (C). Tight screws to fix the omega, the cover and the screws.
4- Install hydraulic piping and accessories (E y F) to conduct inlet water flow, according to installation needs (install gate valve on the niche if it is necessary).
5- Fit the omega in Switch assembly (C y A) using Niche's bottom threaded rods. Fix it to threaded rods using nuts. Close piping installation using a 3 pieces union coupling.

Cross-sectional diagram of a cylindrical industrial device with internal components and piping (no text or labels)

Line drawing of a cylindrical industrial vessel with mounting feet and a central circular opening (no text or symbols)

Required components (NOT INCLUDED) for device installation:

Component Quantity
Threaded Adaptor 1-1/2”	3
Elbow 90° 1-1/2” Fig. 90	1
3 pieces unión coupling H-H 1-1/2”	1
Gate valve H-H (Optional)	1

AVISO: Measure all piping accessories in order to check if they are adequate to expected installation.

2.3.2 Niche installation

1) Connect hydraulic installation (See 2.4.1). Connect water pump outlet to niche's 1-1/2" inlet (⑨) and connect relief piping to 2" niche's outlet (⑦).
2) Connect electrical installation (See 2.4.2). Feed electrovalve's control wire through niche's 1" inlet (⑩), use a cable gland to seal the junction and make it watertight.

Feed power supply/control wire through niche's 1" inlet (⑩), use a cable gland to seal the junction and make it watertight.

Electrical installation must be inside corrugated pipes or similar to do maintenance tasks if necessary.

3) Install and level the device using threaded rods or supports prepared to be embedded on the ground (Concrete or compacted) (See figure)

Technical line drawing of a mechanical assembly inside a structural frame, showing internal components and no text or symbols.

2.4 WIRING AND PIPING

2.4.1 Hydraulic

Connect a water inlet ④ to the device. Install the desired nozzle on the water outlet ①. Install a relief piping ③ if necessary (otherwise, Niche's relief flow flushes by gravity). In case of not underwater placed device, the relief must be piped to the fountain pool.

Switch L water inlet hydraulic installation can be done in two possible ways:

1) Recommended

Technical line drawing of a mechanical assembly or enclosure with internal components (no text or symbols)

Using a brass elbow, a gate valve, a 3 pieces union coupling and threaded adaptors necessary to adjust a desired distance.

graph TD
    A["Diode"] --> B["1"]
    A --> C["2"]
    A --> D["3"]
    A --> E["n"]

Assembly diagram where each niche has its own gate valve.

2) Optional

Technical line drawing of a mechanical assembly or enclosure with internal components and mounting brackets (no text or symbols)

Using a PVC elbow, a 3 pieces union coupling and a PVC pipe with length adapted to distance between relief outlet and elbow

graph TD
    A["Diode"] --> B["Switch 1"]
    A --> C["Switch 2"]
    A --> D["Switch 3"]
    A --> E["Switch 4"]
    A --> F["Switch 5"]
    B --> G["Output"]
    C --> H["Output"]
    D --> I["Output"]
    E --> J["Output"]
    F --> K["Output"]

Assembly diagram where a manifold on pump outlet with n gate valves installed on technical room are shown.

WARNING: Risk of unit damage. Clean all piping prior to connecting and starting the unit up.

WARNING: Risk of unit damage. Install a 130 m filter before the water inlet.

WARNING: It is highly recommended to install a regulation valve on the water inlet to adjust the water jet height.

WARNING: It is highly recommended to install a shut-off valve outside the niche in order to make maintenance tasks easily.

WARNING: Depending on the switches' number installed at the same manifold, and depending on the installed nozzle, a relief regulation could be needed to keep jets height stable.

2.4.2 Electric

WARNING: Risk of unit damage. The unit working needs a control system which keeps one of the valves activated (ornamental outlet or relief outlet). Two valves cannot be activated at the same time nor disabled at the same time during normal working. When the fountain is not working, valves must be disabled.

WARNING: Risk of unit damage. Install a 2-A fuse on the electrical panel to prevent power surges on 24VDC Brown and yellow-green wires.

WARNING WARNING unit damage. Check that all IP68 connectors are properly sealed and that they prevent water getting through. Electrical components may become damaged by flooding and the unit could lose its warranty.

2) Connect electrical wiring to the unit (55).

Wire Color	Voltage	Function
Blue	0 V	Common reference for outlets.
Brown	+24 V DC	Top ornamental outlet activation 1.
Green-yellow	+24 V DC	Side relief outlet activation (3)

2.4.3 Wiring diagram

WARNING: Protect the water outlet from wind and do not operate in strong wind. If the unit is installed in a windy area, water outlet could be often displaced.

3.1 OPERATION

The operation of the unit will depend on the control system installed, which is not supplied with this unit.

DANGER: Risk of injuries. Maximum jet height must not exceed 4m if the units are installed on a dry fountain.

WARNING: Risk of unit damage. The maximum working water pressure is 4 bar.

WARNING: Risk of unit damage. On/off switching of the unit is commanded by a relay with activation frequencies exceeding 0,5 seconds.

3.2 MAINTENANCE

For the maintenance of the components made of stainless steel, see the manual attached.

It is highly recommendable to activate the device at least once a month to check the proper electrovalve operation.

Check device's inlet filter status weekly.

4 TECHNICAL SPECIFICATIONS

	Part66570
Input Voltage 24 V DC
Total power load 25 W
Hydraulic connection 1-1/2” G
Maximum pressure 4 Bar
Nozzle diameter 16-20 mm

	Part66572
Inlet hydraulic connection 1-1/2” G
Relief hydraulic connection 2” G
Wiring connections 1” G

5 FAQs

Question Answer

¿Why is the water not reaching the desired height?

¿Why is the water not coming out of the jet?

¿Why the jet is not cut when relay is activated?

¿Why is the jet height increased or decreased when other switches are activated at the same hydraulic circuit?

Check the pressure on the pump outlet is correct.

Check if the filter is obstructed Check unit connections and pump function. Look for possible nozzle obstructions. Check wiring, fuse and electrovalves Check wiring and connections. Check fuses and electrovalves function. Check the relay and the control system. Depending on the installed nozzles, could be necessary to install a relief regulation in order to maintain the manifold pressure

In other cases or if the answers have not resolved the problem detected, contact any service engineer (see the list of approved engineers on the product's warranty).

6 WARRANTY

See attached document "Warranty certificate for fountain units".

7 ENVIRONMENT

At the end of its working life, every wasted component must be correctly managed according to the current environmental regulations of the country where it is installed.

8 PRODUCT LABELLING

Not operational T < 4 °C

Safe management of waste electrical and electronic equipment Directive 2002/96/CE. (RAEE/WEEE)

The unit's documentation must be read before use

DIMENSIONES DIMENSIONS

Cod. 66572/ Rev. 00

Made in

SPAIN

VAT: ES

A08246274

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