Grundfos rmq-a, Installation & Operating Instruction

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6. Installation
6.1 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
6.3 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.
6.2 Mounting
Procedure
1. Remove the wall bracket by pulling it downwards
until it disengages from the cabinet.
2. Fasten the wall bracket in the horizontal position
using the rawlplugs and screws supplied.
3. Mount the RMQ unit on the bracket.
6.3 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 , pos. 10.
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
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3
Note
The overflow pipe must be vented under
all conditions; otherwise a vacuum may
form, causing water to be drawn from the
collecting tank.
Note
The RMQ overflow does not function as a
water seal.
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40
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Pos. Description
1 Air vent cap
2 Water seal
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1
2
Min. 0,5 m
Min. 0,5 m