Grundfos RMQ A Series User manual

RMQ A, RMQ B
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
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)
3
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)
4
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
B)
• 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)
5
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
17
8
9
10
2
3
4
5
6
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)
6
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)
7
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
1
2
Min. 0.5 m
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
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
1
2
3
4
5
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.
1
3
12 cm
2

English (GB)
9
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
1
2
3
4
5
The pressure sensor only functions when
air can freely enter and exit from the pipe
and hose.
TM04 6919 1110

English (GB)
10
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