5
8.2.5
High limit temperature protection
42
8.2.6
Low-water protection (flow and content)
42
8.3
External connections
42
8.4
Boiler control
44
8.4.1
Modulating (two wire control)
44
8.4.2
Analog control (0-10 Volt dc)
46
8.4.3
On / off control (1 x no volt switched pair)
48
8.4.4
High / low control (2 x no volt switched pairs)
48
8.5
DHW control (Broag priority)
48
8.5.1
Temperature control
48
8.5.2
Primary flow control
48
8.6
System pump
48
8.7
Frost protection
48
8.8
Remote alarm and boiler run indication
49
8.9
Safety interlock
49
9 Commissioning
49
9.1
Initial lighting
49
9.2
Shut-down
52
9.2.1
Temporary shut-down with frost protection
52
9.2.2
Permanent shut-down without frost protection
52
10 Fault-finding
52
10.1 General (all installations)
52
10.2 Fault codes
53
11 Inspection and servicing instructions
57
11.1
General
57
11.2
Annual Inspection
57
11.3
Maintenance
57
