4
Pipe Work
It is essential that the pipe work connecting to and from the heater
has a minimum bore (internal diameter) of 1¼” (32mm). To assist correct air
purging and to ensure the heater remains completely full of water during
operation, the return pipe which carries the water back to the pond must
incorporate a safety loop or ‘kick-up’ in the pipe as close as possible to the
heater (see Fig 4.)
NOTE: When coupling to a flexible pipe a safety loop can simply be
created by routing the pipe up and over an obstacle. Remember to
use pipe clips to securely fasten all hose connections.
Note: To allow ease of periodic internal cleaning - it is recommended that
the heater is installed with ball valve unions on both water input and
output sides. This will allow the water to be shut off on both sides of the
heater to allow removal from the system.
Weather Protection
The heater must be installed within a dry weather proof enclosure.
Caution!
If the heater is not used during winter months it must be drained to
prevent frost damage.
Electrical Connection
The heater must be installed in accordance with the country / regional
requirements and regulations. In any event the work must be carried out
by a qualified electrician, who will provide a certificate of conformity upon
completion of the work. The power supply must be fitted with a RCD.
EN
G
LIS
H
Remove Access Cover
to make the electrical
connections
(Qualified electricians only)
Fig 5.
5
EN
G
LIS
H
Cable section:
This should be calculated at 5-amp / mm² for distances
up to 20 metres (these sections are indicative and should be checked and
adapted if necessary for cable lengths over 20 metres).
Power Requirements
Flow Requirements
Your heater is factory set to accept input water flow entering on the left
and exiting on the right, this can be reversed by rotating the flow switch
180 degrees (ie: ½ turn - see Fig 6)
Power Output
Voltage
(V)
Amp
1 - kW
230
5
2 - kW
230
9
3 - kW
230
13
4 - kW
230
18
6 - kW
230
27
8 - kW
230
35
3 Phase Power
Output
Star
Amp
6-kW
400
9
8.4-kW
400
13
Power Output
Voltage
(V)
Amp
1 - kW
115
9
1.5 - kW
115
13
2 - kW
115
18
3 Phase Power
Output
Delta
Amp
6 - kW
220
16
8.4 - kW
220
22
To reverse flow:
Loosen cap and rotate
flow switch by 180 degrees
as shown. Always ensure
the arrow marked on the
plastic flow switch body is
in the same direction as the
water flow.
Factory set flow
Optional
reverse
flow
Flow
Fig 6.
Содержание 900 EVO
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