Biasi RIVA PLUS M90S.28SR Manuals

Manuals and User Guides for Biasi RIVA PLUS M90S.28SR. We have 1 Biasi RIVA PLUS M90S.28SR manual available for free PDF download: Service Manual

Biasi RIVA PLUS M90S.28SR Service Manual

Biasi RIVA PLUS M90S.28SR Service Manual (44 pages)

wall hung, fan flue, room sealed gas boiler

Brand: Biasi | Category: Boiler | Size: 2 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
3 Diagrams

7
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
- 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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