10
7.
The motor casing can become very hot under normal operating
conditions. Make sure the pump cannot be touched during operation. If
installed in an airing cupboard, make sure no fabrics come in contact
with the pump.
8.
Location must be
DRY
and
FROST FREE
and
NOT EXPOSED TO WATER
SPRAY
.
9.
The pump must be sited as low and as close as possible in relation to
the water source and mounted in a horizontal position with the outlet
connection vertically upwards. The operation of the flow switch will be
impaired in any other position. Do not rigidly secure the pump to the
mounting surface.
10.
The pump must have a minimum flooded suction head of 0.5 metres at all
times.
11.
The pump must be installed in a positive head position, a gravity flow of
approximately 1.0 l/min is required from the highest outlet. This is normally
achieved with a static head of 100 mm from the base of the header tank to
the highest position of the shower fitting. (See Fig. 2.)
System Layout for Mira Twin Ended Pump
Fig. 2
Minimum
1.5 m
with other
simultaneous
hot water
services
Cistern
Warning Pipe
(Overflow)
Other Hot Water Services
DHW
Pump
30 to 60°
Air Separation Connections
DHW Cylinder
Feed
25 mm
Cold Feed to
Mixing Valve
90°
Minimum 100
mm
Electrical Supply Lead
(1.5 m)
Full bore Isolator valves
MUST be fitted to inlets
and outlets
