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- Service instructions manual
QHT RIVA FP Service instructions manual - page 36
___________________________________________________________________________________________________
Third Part
(edition-0106)
Modulating Gas Valve
_______________________________________________________________
RIVA
FP SERVICE MANUAL – REV A
8-2
9) Start the boiler and rotate the minimum gas
pressure adjustment (B in Figure 2) until you
obtain the required pressure (by rotating
clockwise the pressure increases).
10) Turn the boiler off and re-connect the wire to
the modulating operator.
11) Start the boiler and check again the
maximum gas pressure setting.
12) Turn the boiler off and disconnect the gauge.
Important: after the gas pressure checks and
any adjustment operations, all of the test
points must be sealed.
4
Checks
A Check the modulation operator coil
1) Remove the front panel of the case.
2) Disconnect the connectors D (Figure 2) from
the modulating operator and measure the
electrical resistance of the coil. Its electrical
resistance value must be approx. 114 Ω*.
B Check the on-off operators coils
1) Remove the front panel of the case.
2) Disconnect the Ignition device N (Figure 4).
3) Measure the electrical resistance between the
connector pins of the on-off operators as
illustrated in Figure 5.
N
Figure 4
On-off operator
approx. 1 122 Ω*
* at ambient temperature
Figure 5
5
Removal of the Gas Valve
1) Remove the front panel of the case.
2) Disconnect the connector D (Figure 2) and
remove the full sequence ignition device N
(Figure 4)
3) Turn off the gas supply and remove the gas
supply pipe O (Figure 6).
O
P
Figure 6
4) Loosen the connections Q (Figure 2 and 7)
and R (Figure 7).
R
Q
Figure 7
5) Remove the gas pipe above the gas valve.
6) Loosen the screws P (Figure 6).
7) Remove the gas valve.
8) Reassemble the gas valve carrying out the
removal operations in reverse order.
After any service operation on the
components of the gas circuit check all the
connections for gas leaks.
Warning: After cleaning or replacement as
detailed above, if it deemed
necessary to undertake a
combustion analysis.
Summary of RIVA FP
Page 1
Boiler service instructions manual )3 wall hung gas boiler for central heating supply please read instructions carefully save for future reference — do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. — what to do if you smell gas • do n...
Page 2
___________________________________________________________________________________________________ first part service manual _______________________________________________________________ riva fp service manual – rev a 3 1 the technical manual the aim of this manual is to provide technical assista...
Page 3
___________________________________________________________________________________________________ first part service manual _______________________________________________________________ riva fp service manual – rev a 4 sheet order sequence. Correspondence between component and number is given in...
Page 4: Summary
___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a summary page overall view……………………………………………...
Page 5
___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a.
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 1 1 overall view pump pump ve...
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 2 3 electrical diagram ye bk ...
Page 8
___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 3 4 gas adjustment data maxim...
Page 9
___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 4 5 fault finding.
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 5 6 circuit voltages flow swi...
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 6 7 operation lights the elec...
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 7 9 gas conversion 1) check t...
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___________________________________________________________________________________________________ second part m130.30c m maintenance characteristic verification _______________________________________________________________ riva fp service manual – rev a m130.30c m - 8.
Page 14: Summary
Summary general access and emptying the hydraulic circuits nomenclature 1-1 body panels 1-1 control panel 1-2 access to the sealed chamber 1-2 emptying the primary circuit 1-2 primary heat exchanger function 2-1 removal 2-1 cleaning 2-2 pump function 3-1 checks 3-1 removal 3-1 three way dive...
Page 15
fan and air pressure device 11.61 function 6-1 checks 6-1 removal 6-1 full sequence ignition device s4567a-1019 function 7-1 checks 7-1 removal 7-1 ignition and control sequence 7-2 modulating gas valve function 8-1 nomenclature 8-1 adjustment 8-1 checks 8-2 removal of the gas valve 8-2 prim...
Page 16
fan, venturi device and air pressure switch function 13-1 checks 13-1 removal of the fan 13-2 inspection and removal of the venturi device 13-2 removal of the air pressure switch 13-2 ignition and detection electrodes, burner and injectors function 14-1 checks 14-1 removal 14-1 safety thermost...
Page 17
___________________________________________________________________________________________________ third part (edition-0106) general access and emptying hydraulic circuits _______________________________________________________________ riva fp service manual – rev a 1-1 1 nomenclature 1 2 3 4 5 fig...
Page 18
___________________________________________________________________________________________________ third part (edition-0106) general access and emptying hydraulic circuits _______________________________________________________________ riva fp service manual – rev a 1-2 3 control panel warning: iso...
Page 19
___________________________________________________________________________________________________ third part (edition-0106) primary heat exchanger _______________________________________________________________ riva fp service manual – rev a 2-1 1 function the primary heat exchanger a in figure 1 ...
Page 20
___________________________________________________________________________________________________ third part (edition-0106) primary heat exchanger _______________________________________________________________ riva fp service manual – rev a 2-2 8) completely unscrew the connection j and rotate th...
Page 21
___________________________________________________________________________________________________ third part (edition-0106) pump _______________________________________________________________ riva fp service manual – rev a 3-1 1 function the pump a in figure 1 has the function of making the water...
Page 22
___________________________________________________________________________________________________ third part (edition-0106) pump _______________________________________________________________ riva fp service manual – rev a 3-2 b c d figure 3 e f g figure 4 5) loosen the connections d (figure 3). ...
Page 23
Three way diverter valve 1 function the diverter valve a (fig. 1) has the function of modify- ing the hydraulic circuit of the boiler by means of an electriccommandgiven by the electronic control p.C.B. In order to send the water that exitsthe primary heat ex- changer towards the c.H. System or towa...
Page 24
D c e fig. 4 4 removal of the diverter group and its internal parts 1 remove the front and both side case panels. 2 empty the primary circuit and the d.H.W circuit of the boiler. 3 remove the electric actuator (see section 8.3). 4 remove the ÿxing spring f (fig. 5) and remove the primary circuit ° o...
Page 25
___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva heat only service manual – rev a 5-1 1 function from other boiler devices.... C.H. T...
Page 26
___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a 5-2 d) boiler reset button e) function control / c.H. Temp...
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___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a.
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___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a 5-3 figure 4 5 dip-switch selectors the function selectors...
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___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a 5-4 6 ignition gas pressure adjustment by using the device...
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___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a 5-5 figure10 4) unscrew the four screws that hold the cont...
Page 31
___________________________________________________________________________________________________ third part (edition-0106) control p.C.B. 11.62 _______________________________________________________________ riva fp service manual – rev a 5-6 12 thermal control after 25 second circulator off and ...
Page 32
___________________________________________________________________________________________________ third part (edition-0106) fan and air pressure device 11.61 _______________________________________________________________ riva fp service manual – rev a 6-1 1 function the fan and air pressure devic...
Page 33
___________________________________________________________________________________________________ third part (edition-0106) full sequence ignition device s4567a-1019 _______________________________________________________________ riva fp service manual – rev a 7-1 1 function the full sequence igni...
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___________________________________________________________________________________________________ third part (edition-0106) full sequence ignition device s4567a-1019 _______________________________________________________________ riva fp service manual – rev a 7-2 3) remove the connector g (figure...
Page 35
___________________________________________________________________________________________________ third part (edition-0106) modulating gas valve _______________________________________________________________ riva fp service manual – rev a 8-1 1 function the modulating gas valve a in figure 1 cont...
Page 36
___________________________________________________________________________________________________ third part (edition-0106) modulating gas valve _______________________________________________________________ riva fp service manual – rev a 8-2 9) start the boiler and rotate the minimum gas pressur...
Page 37
___________________________________________________________________________________________________ third part (edition-0106) primary circuit flow switch _______________________________________________________________ riva fp service manual – rev a 9-1 1 function the primary circuit flow switch (a i...
Page 38
___________________________________________________________________________________________________ third part (edition-0106) primary circuit flow switch _______________________________________________________________ riva fp service manual – rev a 9-2 4) re-assemble the parts in reverse order of re...
Page 39
13 d.H.W. ˜ow switch, ÿlter and ˜ow limiter 1 function the d.H.W. ˜ow switch a in fig. 1 isa devicethat gener- ates an electrical signal when hot water is drawn. A fig. 1 when the ˜ow rate through the d.H.W. Circuit reaches about .6 gal/min’, thefloat 6 (fig. 3) is drawn to- wards the right. The res...
Page 40
___________________________________________________________________________________________________ third part (edition-0106) expansion vessel and temperature-pressure gauge _______________________________________________________________ riva fp service manual – rev a 11-1 1 function the c.H. Expans...
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___________________________________________________________________________________________________ third part (edition-0106) expansion vessel and temperature-pressure gauge _______________________________________________________________ riva fp service manual – rev a 11-2 g f figure 4 4) remove the...
Page 42
By---pass valve 1 function the by---pass valve a in fig. 1 is located between the changer if thecirculation acrossthe c.H.System iscom- pletely closed. Erter group. A fig. 1 2 removal warning: isolate the boiler from the mains electricity supply before removing any covering or component. 1 remove al...
Page 43
___________________________________________________________________________________________________ third part (edition-0106) fan, venturi device and air pressure switch _______________________________________________________________ 1 function the function of the fan a (figure 1) is to force the pr...
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___________________________________________________________________________________________________ third part (edition-0106) fan, venturi device and air pressure switch _______________________________________________________________ c check of the venturi device this test must be carried out with t...
Page 45
___________________________________________________________________________________________________ third part (edition-0106) ignition and detection electrodes, burner and injectors _______________________________________________________________ 1 function three electrodes are fitted on the burner. ...
Page 46
___________________________________________________________________________________________________ third part (edition-0106) ignition and detection electrodes, burner and injectors _______________________________________________________________ d figure 4 6) extract the electrodes from the burner. ...
Page 47
___________________________________________________________________________________________________ third part (edition-0106) safety thermostat _______________________________________________________________ 1 function the safety thermostat a in figure 1 is a device that senses the temperature of th...
Page 48
___________________________________________________________________________________________________ third part (edition-0106) safety thermostat _______________________________________________________________ c d figure 3 5) re-assemble the parts carrying out the removal operation in reverse order. 6...
Page 49
___________________________________________________________________________________________________ third part (edition-0106) electric resistances _______________________________________________________________ resume of the electric resistances in Ω of the boiler parts. 1 pump resistance figure 1 p...
Page 50
___________________________________________________________________________________________________ third part (edition-0106) short spare parts list _______________________________________________________________ key description quantity manufactorer part no. Manufactorer’s reference 1 burner 1 bi12...
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___________________________________________________________________________________________________ third part (edition-0106) short spare parts list _______________________________________________________________ 12 1 2 3 5 6 7 4 8 16 10 20 21 22 24 15 17 23 13 14 11 18 19 9 riva fp service manual -...
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_______________________________________________________________________________________ ________ ____ (edition-0106) _______________________________________________________________ riva fp service manual – rev a.