Grundfos CU541 Instructions for use

DOC: CU541 REV: 1.0
-DANGER-
HIGH VOLTAGE
DO NOT OPEN COVER
AUTHORISED
PERSONS ONLY
FPC-SERIES
DUAL HOT WATER
CIRCULATOR
PUMP 1
MAN PUMP 2
MAN
AUTO
c/w Time Clock
Dual Pump Econo Hot Water Re-Circulator
Installation and Operating Instructions
PUMPCONTROL
OWNER’S
OPERATION
MANUAL
MODEL: CU541
-DANGER-
HIGH VOLTAGE
DO NOT OPEN COVER
AUTHORISED
PERSONS ONLY
FPC-SERIES

240 Vac
2
CONNECTION
NOTE:
Electrician.
Earth
PUMP 2
Active
Neutral
PUMP 2
PUMP 1
240Vac
MAINS POWER
SUPPLY
Earth
PUMP 1
SUPPLY 240 Vac
Active
Neutral
Earth
Active
Neutral
WARNING: All electrical connections must be carried out by a suitably
• Prior to Installation, ensure power supply is isolated.
• Electrical connection to the panel must be carried out in accordance with ‘Connection Instructions’,
shown below
SAFETY

3
SETTING UP
TIME CLOCK
54 3
12
23:36
AUTO
FRI
D+P H+ M+
MANUALRESET
Step Key Programming
1Press P
2Press H+/M+
3Press D+
Setting 1 ON time (display 1 on)
Setting hours and minutes
Select same everyday, different day, MO-FR, MO-SA,
SA-SU, MO WE FR, TU THU SA, MO-WE,
TH-SA. (if same everyday, no need to press this key)
4 Press P Setting 1 OFF time (display 1 off)
5 Press H+/M+ Setting hours and minutes of the turn off time
6 Press D+ If you want the same setting every day, there is no
need to press this key
7 Repeat steps 2~6 Set 2-17 ON/OFF times
8 Press End
1. To start switch, press Reset key
2. To adjust the present time, please press key, then
press D+, H+, M+ to adjust the Days, Hours and Minutes.
3. Programming steps as follows:

4
CIRCUIT DIAGRAM
240 Vac Supply
A EN
Circuit
Breaker
16A ‘D’
Curve 2P
CB1
L1 T1
L2 T2
L3 T3
Contactor 3P
C1 Active
Neutral
Circuit
Breaker 2A
CB2 Earth
240VAC
Pump
P1
P
1~
L1 T1
L2 T2
L3 T3
Contactor 3P
C2 Active
Neutral
Circuit
Breaker 2A
CB3 Earth
240VAC
Pump
P2
P
1~
Circuit
Breaker 2A
CB4 A1 A2
7 Day Time Clock
TC1
Timer Contacts
TC1
A1 A2
Contactor 18A 240Vac
C1
A1 A2
Contactor 18A 240Vac
C2
S1
Pump 1 Manual
Pump 2 Manual
Auto
240N