Alfa Laval AquaFirst
Installation, service and operating instruction
44
14.3
Pumps’ number
The pumps’ configuration and connections is factory made.
In a servicing situation the correct pump must be identified.
Codification Meaning
Connected pump(s)
FIxxxIS
I
nstantaneous
S
ingle
P1
FIxxxID
I
nstantaneous
D
ouble
P1+P2
FIxxxSS
Semi-instantaneous
S
ingle /
S
ingle
P1+P3
FIxxxDS
Semi-instantaneous
D
ouble /
S
ingle
P1+P2+P3
FIxxxxDD
Semi-instantaneous
D
ouble /
D
ouble
P1+P2+P3+P4
14.4 Add a recycling pump to an AquaFirst Direct
A recycling pump can be added to an AquaFirst Direct. The pump must be connected to P3.
14.5 Add an extra pump
AquaFirst uses Class A constant speed pumps.
NOTE:
After adding a pump, make sure that the pump selector is correctly set.
1. Open the Control Box.
2. On the right side of the printed circuit board, PCB; find the selector for the actual pump.
3. Place the pump type selector to the left, constant speed pump.
If lit, the corresponding pump is energized.
Picture 27
14.6 Add an extra sensor
Please see
4.2 Electrical wiring diagram
.
S1-S3 are temperature sensors, NTC20k.
Pump No.
Pump type selector.
Left position=constant speed pump (
•
=
•
•
).