andrews Flexistor 1000, Installation Manual

Page: 10 / 36

10
FIGURE 4: Thermostat and thermal cut-out settings
Thermostat/Cut-out
All immersion heaters are fitted with a thermostat which is fitted in the centre of the heater plate
and a cut-out which is fitted to the side of the thermostat. These MUST be wired in series with
the operating coil circuit of the contactor (not supplied). See figures 4 below and figures 5 & 6,
Page 11.
Maximum working temperature is 80°C/176°F. In very hard water areas limit to 60/65°C
(140/150°F)
For optimal working conditions the thermal cut-out should be set to 80°C (factory set, if the seal
is broken it may invalidate your warranty) and the thermostat should be set to 70°C max. If the
thermostat is set above 70°C there could be instances nuisance tripping of the thermal cut-out.
Notes:
The 2 external contactors must be approved components certified for 10,000 cycles of operation
for the contactor controlled by the thermostat and at least 30 for the contactor controlled by the
none self-resetting thermal cut-out.
Note:
The Immersion(s) are not factory fitted.
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
U
ppe
r
Lo
w
er
400
       
500
          
800
           
1000
             
1250
              
1450
               
2000
               
2500
               
400
       
500
       
800
       
1000        
1250
        
1450
        
2000
        
2500
        
Indi
re
ct
94110309 94110308 94110307 94110306 94110305 94110304 94110303 94110302 94110301
Di
rec
t
Kw 6 9 12 18
Element
30 36 45 54
Location
24
Table 9: Immersion allocation
Thermostat
B
B
Cut-out
4
0
5
0
60
7
0
8
0
A
4
0
50
60 7
0
8
0
A
DO NOT
BREAK SEAL
FACTORY
SET
Reset