Grundfos RMQ A Series User manual

RMQ A, RMQ B

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

CONTENTS

Page

1. General information 3

1.1 Hazard statements 3

1.2 Notes 3

2. Safety instructions 3

3. Intended use 4

4. Delivery 4

5. Product introduction 4

6. Type key 5

7. Technical data 5

7.1 Operating conditions 5

7.2 Dimensions 5

8. Installation 6

8.1 Location 6

8.2 Mounting 6

8.3 Connection to overflow 6

8.4 Connection of mains-water pipe 7

8.5 Connection of inlet hose (rainwater

collecting tank) 8

8.6 Connection of outlet hose 8

8.7 Float switch installation (only RMQ B) 8

8.8 Level sensor installation (only RMQ A) 9

9. Startup 10

9.1 Startup via mains-water supply 10

9.2 Setting the collecting tank height (only

RMQ A) 11

10. Operating panel 12

11. Fault finding 14

12. Disposal 15

Read this document and

the quick guide before

installing the product.

Installation and

operation must comply

with local regulations

and accepted codes of

good practice.

This appliance can be

used by children aged

from 8 years and above

and persons with

reduced physical,

sensory or mental

capabilities or lack of

experience and

knowledge if they have

been given supervision

or instruction concerning

use of the appliance in a

safe way and

understand the hazards

involved.

Children shall not play

with the appliance.

Cleaning and user

maintenance shall not

be made by children

without supervision.

English (GB)

1. General information

1.1 Hazard statements

The symbols and hazard statements below may

appear in Grundfos installation and operating

instructions, safety instructions and service

instructions.

The hazard statements are structured in the

following way:

1.2 Notes

The symbols and notes below may appear in

Grundfos installation and operating instructions,

safety instructions and service instructions.

2. Safety instructions

Installation

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.

SIGNAL WORD

Description of hazard

Consequence of ignoring the warning.

- Action to avoid the hazard.

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.

CAUTION

Crushing of feet

Minor or moderate

personal injury

- Wear safety shoes

when handling the

pump.

DANGER

Electric shock

Death or serious

personal injury

- Before starting any

work on the product,

make sure that the

power supply has been

switched off and that it

cannot be accidentally

switched on.

DANGER

Electric shock

Death or serious

personal injury

- The protective earth of

the socket outlet must

be connected to the

protective earth of the

pump. The plug must

therefore have the

same PE connection

system as that of the

socket outlet. If not,

use a suitable adapter.

English (GB)

Startup

Fault finding

3. Intended use

The product is suitable for pumping clean, thin, non-

aggressive, non-toxic and non-explosive liquids

without solid particles or fibres.

Examples of liquids:

• potable water

• rainwater.

4. Delivery

The following has been supplied:

• RMQ rainwater unit

• wall mounting bracket with screws and rawlplugs

• float switch including 20 m of cable (only for RMQ

• level sensor, including 25 m of cable (only for

RMQ A)

• fittings for pipe connection

• installation and operating instructions.

Check that all parts are OK.

5. Product introduction

The RMQ rainwater unit is designed for the

monitoring and control of rainwater utilisation

systems. The unit detects faults in the rainwater

utilisation system and makes the necessary

adjustments to ensure that the system is operating.

RMQ also ensures that the system operates if the

rainwater collecting tank, such as an underground

tank, runs dry. The unit automatically ensures that

water is available at the points of consumption, such

as toilet and washing machine. The built-in three-

way valve switches between the mains-water hose

and the inlet hose from the collecting tank.

RMQ complies with EN 1717.

Application

RMQ can be used for the following applications:

• the control of rainwater utilisation systems

• as domestic waterworks for the utilisation of

rainwater

• operation in single- and two-family households as

well as for small enterprises.

Observe these precautions in water supply systems:

• Insert a plug in the inlet port. See fig. 1(6).

• Do not use a level sensor in the system.

• Finish the startup procedure after section

9.1 Startup via mains-water supply.

CAUTION

Biological hazard

Minor or moderate

personal injury

- Only use potable water

or rainwater.

DANGER

Electric shock

Death or serious

personal injury

- Before starting work on

the unit, make sure

that the RMQ unit is

set to "Only". Then

disconnect the power

supply. Make sure that

the power supply

cannot be accidentally

switched on.

CAUTION

Biological hazard

Minor or moderate

personal injury

- Only use potable water

or rainwater.

English (GB)

The RMQ components are shown in fig. 1.

Fig. 1 RMQ components

6. Type key

7. Technical data

7.1 Operating conditions

7.2 Dimensions

Fig. 2 Dimensional sketch (dimensions in mm)

TM04 7311 1810

Pos. Description

1 Cabinet

2Pump

3 Operating panel

4 Mains-water hose

5 Outlet hose

6 Inlet hose

7 Float valve

8 Mains-water tank

9 Emergency overflow

10 Overflow

Example RMQ 3 -45 B -A -W -A BVBP

Type range

Rated flow rate [m3/h]

Maximum head [m]

Code for control variant

A: Electronic controls

B: Electric control

Code for version

A: Standard

Code for pipe connection

W: Internal thread

Code for materials

A: Standard

Code for shaft seal

Flow, Qmax.

RMQ -35

RMQ -45

4.0 m3/h

4.5 m3/h

Head, Hmax.

RMQ -35

RMQ -45

35 m

45 m

Liquid temperature 5-35 °C

Maximum inlet pressure,

mains-water connection 6 bar

System pressure Maximum 7.5 bar

Maximum height to highest

point of consumption 15 m

Supply voltage 230 VAC, 50 Hz

Power input during standby Approx. 2.5 W

Rated power input

RMQ -35

RMQ -45

Approx. 850 W

Approx. 1000 W

Enclosure class IP42

Ambient temperature 0-45 °C

Mounting location Indoors

Weight 24 kg

Material, cabinet EPP foam

Material, pump Stainless steel/

POM/PPO

Material, mains-water tank PE

Dimension, mains-water hose 3/4"

Dimension, inlet and outlet

hoses 1"

Dimension, overflow DN 70

TM02 5768 0609

400

English (GB)

8. Installation

8.1 Location

If the RMQ unit is installed below sewer level, the

overflow must be connected to a lifting station which

pumps the water up to sewer level in case of

overflow. See also section 8.3 Connection to

overflow.

Place the RMQ unit as follows:

• In a room with floor drain.

• At least 40 cm below the ceiling, measured from

the top of the unit. This distance is necessary to

be able to carry out maintenance and service

work, if required.

• On a plane wall in the vertical position.

8.2 Mounting

• Remove the wall bracket by pulling it downwards

until it disengages from the cabinet.

• Fasten the wall bracket in the horizontal position

using the rawlplugs and screws supplied.

• Mount the RMQ unit on the bracket.

8.3 Connection to overflow

Procedure:

1. Remove the front part of the cabinet. See fig. 3.

Fig. 3 Removing the front part of the cabinet

2. Connect the socket of a DN 70 pipe to the

overflow pipe of the unit. See fig. 1(10).

Observe local regulations concerning

limits for manual lifting or handling.

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when handling the

pump.

DANGER

Electric shock

Death or serious personal injury

- Before starting any work on the product,

make sure that the power supply has

been switched off and that it cannot be

accidentally switched on.

DANGER

Electric shock

Death or serious personal injury

- The protective earth of the socket outlet

must be connected to the protective

earth of the pump. The plug must

therefore have the same PE connection

system as that of the socket outlet. If

not, use a suitable adapter.

TM02 6378 0403

The overflow pipe must be vented under

all conditions; otherwise a vacuum may

form, causing water to be drawn from the

collecting tank.

English (GB)

3. Before fitting a bend, if required, check that the

DN 70 pipe has a vertical fall of minimum 50 cm.

Connect the overflow to the sewage system via a

vented pipe.

Fig. 4 Overflow to sewer, example 1

Fig. 5 Overflow to sewer, example 2

8.4 Connection of mains-water pipe

The built-in float valve is designed for a maximum

pressure of 6.0 bar.

The float valve has a simple filter in the inlet. If the

mains water is particularly dirty, we recommend that

you fit a strainer in front of the inlet to the float valve.

Fig. 6 Filter in the inlet

We recommend that you fit an isolating valve in the

fixed installation.

Procedure:

1. Connect the mains-water pipe to the mains-water

hose of the unit. See fig. 1(4).

2. Fasten the mains-water pipe with pipe clamps.

The first hose clamp must be fitted at a maximum

distance of 10-15 cm from the unit.

3. Check that the float valve is positioned straight in

the mains-water tank. See fig. 7.

– The float valve must be able to move freely up

and down without touching the sides of the

tank.

Fig. 7 The float valve seen from above

The RMQ overflow does not function as a

water seal.

TM04 7634 2210

Pos. Description

1 Vent cap

2 Water seal

TM04 7633 2210

Min. 0.5 m

TM04 6914 1110

Do not push or pull the mains-water hose;

otherwise it may cause failure of the float

valve.

TM04 6915 1110

English (GB)

8.5 Connection of inlet hose (rainwater

collecting tank)

The inlet hose must be minimum 1" (25 mm internal

diameter).

Flush the inlet hose before connecting it to the RMQ

unit. The inlet hose must be fitted with an inlet filter

(a floating inlet filter is recommended).

Fig. 8 Inlet hose in collecting tank

Avoid bends in the inlet hose.

The maximum suction lift of the pump can be

determined on the basis of the diagram on page 16.

Example

If the suction lift is 2.5 m, the length of the inlet hose

must not exceed 24 m.

The inlet hose must slope gradually upwards to

avoid air pockets.

Procedure

1. Connect the inlet hose to the inlet hose union.

See fig. 1(6).

– Tighten the union without damaging the O-ring.

2. Fasten the inlet hose with hose clamps.

8.6 Connection of outlet hose

We recommend that you fit an isolating valve on the

outlet side of the pump.

Procedure

1. Connect the pump outlet hose, see fig. 1(5), to

the water installation, such as the toilet.

2. Fasten the outlet hose with hose clamps. The

first hose clamp must be fitted at a maximum

distance of 10-15 cm from the unit.

8.7 Float switch installation (only RMQ B)

Procedure:

1. Drill a mounting hole on the inside of the tank

wall, above maximum water level, and fasten the

cable clamp. See fig. 9(1).

2. Lay the float switch cable in the cable clamp and

tighten the clamp loosely with the screw.

3. Pull up the float switch until the distance between

the weight and the bottom of the tank is 12 cm.

See fig. 9.

4. Tighten the cable clamp until the cable has been

fixed and cannot be pulled out.

Fig. 9 Float switch installed in collecting tank

TM04 4088 0709

Pos. Description

1 Inlet hose

2 Maximum water level

3 Float valve

4 Inlet filter

5 Level sensor

0.5m

Make sure that the float switch does not

touch any obstacles in the collecting tank,

such as the tank wall or inlet pipe;

otherwise, functional defects may occur in

the system.

TM04 7632 2210

Pos. Description

1 Cable clamp

2 Maximum water level

3 Float switch cable

The float switch cable must be run through

a conduit.

12 cm

English (GB)

Recommendation: Connect the collecting tank to

the RMQ B unit with a pipe, such as DN 100. The

cable and the inlet hose can be run through this pipe.

• Adjust the cable length and connect the cable to

the unit. Connect the two stripped wires to the

terminals of the unit. See fig. 10.

– The wires can be fitted randomly.

Fig. 10 Terminal connection to the float switch

cable, the unit seen from below

8.8 Level sensor installation (only RMQ A)

Procedure

1. Gently lower the sensor cable with sensor into

the collecting tank and lay the sensor on the

bottom of the tank. See fig. 11.

– Lay a minimum of 0.5 m of sensor cable on the

bottom of the tank.

2. For correct display of water level, measure the

maximum water level in the collecting tank.

– Measure from the bottom of the tank to the

overflow (for the purpose of calibration of the

level sensor). See section 9.2 Setting the

collecting tank height (only RMQ A).

Fig. 11 Level sensor installed in collecting tank

Recommendation: Connect the collecting tank to

the RMQ A unit with a pipe, such as DN 100. The

sensor cable and the inlet hose can be run through

this pipe.

• Avoid water ingress into the sensor cable. Keep

the tape on the cable during the installation.

• Adjust the cable length and connect the cable to

the unit. Connect the two stripped wires to the

terminals of the unit. See fig. 12.

– The wires can be fitted randomly.

• Remove the tape from the sensor cable.

Fig. 12 Terminal connection to the sensor cable,

the unit seen from below

TM04 7312 1810TM04 4088 0709

The level sensor cable must be run

through a conduit.

0.5m

The pressure sensor only functions when

air can freely enter and exit from the pipe

and hose.

TM04 6919 1110

English (GB)

9. Startup

The RMQ unit is started up via the mains-water

supply. The RMQ is factory-set to mains-water

operation "Only". See section 10. Operating panel.

9.1 Startup via mains-water supply

Procedure:

1. Turn on the water supply.

– The mains-water tank is automatically filled

with water.

2. Loosen the vent screw of the pump. See fig. 13.

– The pump will automatically be filled with water

within approximately 1 minute.

Fig. 13 Pump vent screw

3. Retighten the vent screw after approximately 1

minute.

4. Open the isolating valve on the outlet side (if

fitted) and the connected points of consumption,

such as toilet and tap.

5. Switch on the power supply.

– The pump starts and the indicator light "Only"

on the operating panel is on (mains-water

operation). If the indicator light is off, set the

unit to "Only" by pressing the button. See

section 10. Operating panel.

6. If the pump does not start immediately, briefly

press [On/Off]. See section 10. Operating panel.

– The unit switches on, and the pump starts after

a few seconds.

7. Close the connected points of consumption as

soon as airless water starts running out.

– Maximum pressure is generated, and the pump

stops again after 15 seconds (stop delay).

The unit is now ready for operation.

To cut in the collecting tank:

In RMQ B there must be sufficient water in the tank

to activate the float switch.

In RMQ A the water level must be a minimum of 0.3

m of water above the level sensor.

8. Set the unit to "Auto" by pressing the button. See

section 10. Operating panel.

9. Wait for approximately 10 seconds.

10. Turn on the points of consumption, such as toilet

and tap.

– Due to the pressure drop, the pump starts

automatically and will then start to self-prime.

If the priming has not been completed within 1

minute, the pump stops automatically (the red

"Alarm" indicator light is on). See section

10. Operating panel.

Restarting:

Press [On/Off] once to reset the alarm

indication. Press the button again to start the

pump.

11. Close the points of consumption again as soon

as airless water starts running out.

12. Fit the front part of the cabinet.

The system is ready for operation.

CAUTION

Biological hazard

Minor or moderate personal injury

- Only use potable water or rainwater.

The float valve automatically controls the

mains-water supply.

TM02 6385 0403

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