Control P.c.b. 11.62; Function; Selection And Adjustment Devices; Checking The Temperature - Biasi RIVA COMBI Service Manual

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Third Part
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Control p.c.b. 11.62

1) Function

2) Selection and Adjustment Devices

3) Checking the Temperature

4) Operation Lights

5) Dip-switch Selector
6) Ignition Gas Pressure Adjustment
7) Max C.h. Power Regulation
1 Function
Inlet Information
On the Electronic control p.c.b.......
Function control*
C.h. temperature adjustment*
D.h.w. temperature adjustment*
Function dip-switches
Max c.h. power adjustment
Ignition gas pressure adjustment
Boiler reset button*
*control panel fascia
From other boiler devices....
C.h. temperature probe NTC
D.h.w. storage tank probe NTC
D.h.w. flow switch
Primary circuit flow switch
Room thermostat (if fitted)
Flame presence signal*
*from the full sequence ignition device
Outlet command
Pump
Three way diverter valve
Full sequence ignition device
Modulation operator
Appliance operation lights*
Lock-out signal lamp*
*control panel fascia
RIVA COMBI SERVICE MANUAL – REV A
(edition-0106)
8) Anti-frost System
9) Uniform Temperature System
10) Hydraulic Parts Checking System
11) Advanced Probe Control System
12) Checks
13) Removal of the Control p.c.b.
14) Thermal Control in the Winter Mode
15) Thermal Control in the Summer Mode
The fundamental function of the Control p.c.b. is
that of controlling the boiler in relation to the
external needs (i.e. heating the dwelling or
heating the water for d.h.w. use) and operating in
order to keep the temperature of the hydraulic
circuits constant.
This is obviously possible within the useful power
and maximum working temperature limits
foreseen.
Generally, the Control p.c.b. receives inlet
information coming from the boiler (the sensors)
or from the outside (knobs, room thermostat,
etc.), processes it and consequently acts with
outlet commands on other components of the
boiler.
2 Selection and Adjustment Devices
On the Control p.c.b. several selection,
adjustment and protection devices are located.
(Figure 1).
Some of these devices are directly accessible by
the user (function control, temperature
adjustment potentiometers etc.) others are
accessible by removing the service panel or the
control panel lid.
L
K
J
I
H
Control p.c.b. 11.62
E
G
F
Figure 1
A
B
C
D
6-1