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RIVA PLUS M90S.28S
Biasi RIVA PLUS M90S.28S Manuals
Manuals and User Guides for Biasi RIVA PLUS M90S.28S. We have
1
Biasi RIVA PLUS M90S.28S manual available for free PDF download: Service Manual
Biasi RIVA PLUS M90S.28S Service Manual (44 pages)
wall hung, fan flue, room sealed gas boiler
Brand:
Biasi
| Category:
Boiler
| Size: 2.91 MB
Table of Contents
Table of Contents
3
1 Overall Information
4
Overall View
4
Hydraulic Diagram
4
2 General Access and Emptying Hydraulic Circuits
5
Body Panels
5
Nomenclature
5
Access to the Sealed Chamber
6
Emptying the D.h.w. Circuit
6
Emptying the Primary Circuit
6
3 Diagrams
7
Wiring Diagram M90D.24S M90D.28S
7
Wiring Diagram M90D.24SR, M90D.28SR
9
Functional Flow Diagrams
11
General Layout
11
Circuit Voltages
12
4 Fault Finding
14
Characteristics
16
Cleaning
16
5 Primary Heat Exchanger
16
Removal
16
Function
17
Removal
17
6 H.w. Heat Exchanger
17
7 Pump
18
Checks
18
Removal
18
8 Three Way Diverter Valve
19
Function
18
Checks
19
Function
19
Removal of the Electric Actuator
19
Removal of the Diverter Group and Its Internal Parts
20
Checking the Temperature
21
9 Electronic Control P.C.b
21
Function
21
Selection and Adjustment Devices
21
Operation Lights
22
Dip
23
Checks
24
Removal of the Electronic Control P.C.b
24
Thermal Control in the
26
Ignition Gas Pressure Adjustment
24
Max C.h. Power Adjustment
24
Setting Jumpers
24
Mode
26
Thermal Control in the " " Mode
26
10 Full Sequence Ignition Device
27
Checks
27
Function
27
Removal
27
Ignition and Control Sequence
28
11 Modulating Gas Valve
29
Adjustment
29
Function
29
Nomenclature of the Parts
29
Checks
30
Removal of the Gas Valve
30
12 Primary Circuit Flow Switch
31
Checks
31
Function
31
Removal
31
13 Expansion Vessel and
32
Checks
32
Removal of the Expansion Vessel
32
Removal of the Temperature
32
14 Flow Switch, Filter and Flow Limiter
33
Function
32
Flow Limiter
34
Checks
35
Function
35
Removal
35
15 Temperature Probe
35
Removal
36
The by
36
16 By--Pass Valve
37
Checks
37
Removal of the Fan
38
Inspection and Removal of the Venturi Device
38
Fig. 70
38
Warning: Isolate the Boiler from the Mains
38
Electricity Supply before Removing any
38
Covering or Component
38
Removal of the Air Pressure Switch
39
Checks
40
17 Fan, Venturi Device and Air Pressure Switch
37
Function
37
Removal
40
18 Ignition and Detection Electrodes
40
Function
40
19 Safety Thermostat
41
Function
41
Checks
41
Removal
41
Fig. 77
41
20 Short Spare Parts List
42
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