broag REMEHA W40-m ECO, Installation And Maintenance Instructions Manual

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3
8. Electrical installation 25
8.1 General 25
8.2 Electrical supply 25
8.3 Connection to the control system 25
8.3.1 Modulating control 25
8.3.2 Room thermostat 24V 26
8.3.3 Room thermostat in combination
with an outdoor temperature sensor 26
8.3.4 Two-stage external weather
compensator
26
8.3.5 D.H.W. control 26
8.3.6 Frost protection 27
8.3.7 Signals 27
8.4 Water temperature control 28
8.5 Low-water protection 28
8.6 High limit temperature protection 28
8.7 Differential air pressure switch (LD2) 28
8.8 Control box 28
8.9 Fuse specification 28
8.10 Electrical wiring diagram 29
9. Installation instructions for the gas Installer 30
9.1 Gas connection 30
9.2 Gas pressures 30
9.3 Gas/air ratio control 30
10. Commissioning 31
10.1 Initial lighting 31
10.2 Shut-down 32
10.3 Settings 33
10.3.1 General 33
10.3.2 Setting the required flow
temperature
33
10.3.3 Setting the required flow
temperature when using an
outdoor sensor
33
10.3.4 Changing the cut-in temperature
differential
33
10.3.5 Setting the pump control 33
10.3.6 Setting the burner control 33
10.3.7 Setting D.H.W. temperature 34
10.3.8 Switching D.H.W. operation
on and off
34
10.3.9 Changing D.H.W. operating cut-in
differential (service level)
34
10.3.10 Changing maximum flow
temperature during D.H.W.
operation
34
10.3.11 Changing three-way valve/boiler
pump setting 34
11. Fault-finding 35
11.1 General 35
11.2 Faults in appliances in combination with
the
rematic ®
weather-compensated
boiler control 35
11.3 Faults in appliances without a modulating
rematic ® weather-compensated
boiler control 35
11.4 Fault codes 35
12. Inspection and servicing instructions 37
12.1 General 37
12.2 Inspection 37
12.3 Maintenance 38
12.4 Draining and filling 39
12.5 Venting 39