REMEHA W40 Installation And Maintenance Instructions Manual page 3

8. Electrical installation
8.1 General
8.2 Electrical supply
8.3 Connection to the control system
8.3.1 Modulating control
8.3.2 Room thermostat 24V
8.3.3 Room thermostat in combination
with an outdoor temperature sensor 26
8.3.4 Two-stage external weather
compensator
8.3.5 D.H.W. control
8.3.6 Frost protection
8.3.7 Signals
8.4 Water temperature control
8.5 Low-water protection
8.6 High limit temperature protection
8.7 Differential air pressure switch (LD2)
8.8 Control box
8.9 Fuse specification
8.10 Electrical wiring diagram
9. Installation instructions for the gas Installer
9.1 Gas connection
9.2 Gas pressures
9.3 Gas/air ratio control
25 10. Commissioning
25 10.1 Initial lighting
25 10.2 Shut-down
25 10.3 Settings
25 10.3.1
26 10.3.2
10.3.3
26
26 10.3.4
27
27 10.3.5
28 10.3.6
28 10.3.7
28 10.3.8
28
28 10.3.9
28
29 10.3.10 Changing maximum flow
30
30
10.3.11 Changing three-way valve/boiler
30
30
11. Fault-finding
11.1 General
11.2 Faults in appliances in combination with
the rematic
boiler control
11.3 Faults in appliances without a modulating
rematic
boiler control
11.4 Fault codes
12. Inspection and servicing instructions
12.1 General
12.2 Inspection
12.3 Maintenance
12.4 Draining and filling
12.5 Venting
3
General
Setting the required flow
temperature
Setting the required flow
temperature when using an
outdoor sensor
Changing the cut-in temperature
differential
Setting the pump control
Setting the burner control
Setting D.H.W. temperature
Switching D.H.W. operation
on and off
Changing D.H.W. operating cut-in
differential (service level)
temperature during D.H.W.
operation
pump setting
®
weather-compensated
®
weather-compensated
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