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QHT RIVA FP Service Instructions Manual

Wall hung gas boiler for central heating supply
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WALL HUNG GAS BOILER FOR
CENTRAL HEATING SUPPLY
Please Read Instructions Carefully
Save for Future Reference
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— 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 not try to light any appliance.
• Do not touch any electric switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
• If you can not reach your gas supplier call the fire department.
— Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
Manufactured by:
Biasi S.p.A.
Verona, Italy
Distributed By:
Quincy Hydronic Technologies, Inc.
Portsmouth, NH 03801
Phone: 603-334-6400
Fax: 603-334-6401
RIVA FP SERVICE MANUAL - REV A
*17562.0187.0*
17562.0187.0 0406 (49A4)USA

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Summary of Contents for QHT RIVA FP

  • Page 1 — Installation and service must be performed by a qualified installer, service agency or the gas supplier. Manufactured by: Distributed By: Biasi S.p.A. Verona, Italy Quincy Hydronic Technologies, Inc. Portsmouth, NH 03801 Phone: 603-334-6400 Fax: 603-334-6401 RIVA FP SERVICE MANUAL - REV A...
  • Page 2 M130.30CR - 5 M130.30CR - 7 fig. 4 Part three is also arranged on two levels (fig. fig. 1 5); the first is a number assigned to each component, the second indicates technical RIVA FP SERVICE MANUAL – REV A...
  • Page 3 C = Sealed Chamber maintenance. Series Models Max useful power in c.h. 30 = 30,00 kW (25 800 kcal/h) M130------------------|M130.30CM Boiler series fig. 6 RIVA FP SERVICE MANUAL – REV A...

  • Page 4: Table Of Contents

    HYDRAULIC DIAGRAM…………………………………………………..M130.30CM - 1 ELECTRICAL DIAGRAM………………………………………………….M130.30CM - 2 GAS ADJUSTMENT DATA……………………………………………….M130.30CM - 3 FAULT FINDING……………………………………………………………M130.30CM - 4 CIRCUIT VOLTAGES…………………………………………………...…M130.30CM - 5 OPERATION LIGHTS……………………………………………………...M130.30CM - 6 START UP CHECKS……………………………………………………….M130.30CM - 6 GAS CONVERSION………………………………………………………..M130.30CM - 7 RIVA FP SERVICE MANUAL – REV A...
  • Page 5 ___________________________________________________________________________________________________ Second Part M130.30CM Maintenance Characteristic Verification _______________________________________________________________ RIVA FP SERVICE MANUAL – REV A...

  • Page 6: Overall View

    Modulation operator gas valve Gas valve inlet Pump pressure test point Pump vent plug Safety C.h. temp. thermostat probe NTC Primary circuit flow switch Control panel Hydraulic Diagram fig. 2 RIVA FP SERVICE MANUAL – REV A M130.30CM - 1...

  • Page 7: Electrical Diagram

    - blue bk - black wh - white * ---> directly connected to the electronic ignition board rd - red gy - grey ye - yellow gnye - green/yellow fig. 3 RIVA FP SERVICE MANUAL – REV A M130.30CM - 2...

  • Page 8: Gas Adjustment Data

    1.89 2.57 3.33 4.22 5.34 Natural m³/h 48.7 53.0 60.7 72.4 84.0 96.0 107.7 121.1 1080 1400 1760 2230 Propane inwc 1.45 1.69 2.25 3.21 4.34 5.62 7.06 8.95 lb/h RIVA FP SERVICE MANUAL – REV A M130.30CM - 3...

  • Page 9: Fault Finding

    ___________________________________________________________________________________________________ Second Part M130.30CM Maintenance Characteristic Verification _______________________________________________________________ Fault Finding RIVA FP SERVICE MANUAL – REV A M130.30CM - 4...

  • Page 10: Circuit Voltages

    Fan and Air Pressure Gas Valve Device 120~ Full Sequence Device Safety 120~ Thermostat 120~ Air pressure Switch 120~ Control p.c.b. Control p.c.b. Fan and Air Pressure Device 120~ 0,3= RIVA FP SERVICE MANUAL – REV A M130.30CM - 5...

  • Page 11: Operation Lights

    Check it is correctly bled of air. malfunction or emergency. 5) Combustion by-product expulsion system: RIVA FP SERVICE MANUAL – REV A M130.30CM - 6...

  • Page 12: Gas Conversion

    Figure 9.2 10) Set correctly the dip-switch "2" to the correct position (Figure 9.3) in accordance with the following table. Gas supply Position of the switch 2 Natural gas L.P.G. RIVA FP SERVICE MANUAL – REV A M130.30CM - 7...
  • Page 13 ___________________________________________________________________________________________________ Second Part M130.30CM Maintenance Characteristic Verification _______________________________________________________________ RIVA FP SERVICE MANUAL – REV A M130.30CM - 8...
  • Page 14 Max C.h. Power Regulation Anti-frost System Uniform Temperature System Hydraulic Parts Checking System Advanced Probe Control System Checks 6-5 Removal of the Control p.c.b. Thermal Control in Winter Mode Thermal Control in Summer Mode RIVA FP SERVICE MANUAL - REV A...
  • Page 15 11-1 Checks 11-1 Removal of the C.h. Expansion Vessel 11-1 Removal of the D.h.w. Expansion Vessel 11-2 Removal of the Temperature-Pressure Gauge 11-2  Temperature Probe NTC Function 12-1 Checks 12-1 Removal 12-1 RIVA FP SERVICE MANUAL - REV A...
  • Page 16  Safety Thermostat Function 15-1 Checks 15-1 Removal 15-1  Electric Resistances Pump Resistance 16-1 Gas Valve Resistance 16-1 Temperature Probe NTC Resistance 16-1 Fan Resistance 16-1  Short Spare Parts List 17-1 RIVA FP SERVICE MANUAL - REV A...

  • Page 17: General Access And Emptying The Hydraulic Circuits

    Warning: Isolate the boiler from the mains electricity supply before removing any covering or component. For the most part of the check and maintenance operations it is necessary to remove one or more panels of the case. Figure 4 RIVA FP SERVICE MANUAL – REV A...
  • Page 18 Figure 7 For this purpose, remove the front and side panels of the case, remove the screws F as indicated in Figure 6 and remove the lid. RIVA FP SERVICE MANUAL – REV A...

  • Page 19: Primary Heat Exchanger

    H freeing it from the connection of the primary heat exchanger (Figure 4). Figure 1 The hydraulic circuit is composed of 8 elliptical pipes connected in parallel (Figure 2). Figure 2 Figure 4 RIVA FP SERVICE MANUAL – REV A...
  • Page 20 If there are deposits of soot or dirt between the blades of the heat exchanger, clean with a brush or non-metallic bristle brush. In any case, avoid any actions that can damage the protective varnish with which the exchanger has been covered. RIVA FP SERVICE MANUAL – REV A...

  • Page 21: Pump

    4) Unscrew the screw B and remove the black mechanical impediments. case C (Figure 3). With the boiler off, remove the front panel. Remove the air release plug of the pump and turn the rotor with a screwdriver. RIVA FP SERVICE MANUAL – REV A...
  • Page 22 6) Remove the forks F and G (Figure 4). of the pump that seals the connection 7) Remove the locking plate E right (Figure 4). between the pump and the brass group. Figure 5 8) Loosen the connector H. RIVA FP SERVICE MANUAL – REV A...

  • Page 23: Three Way Diverter Valve

    When reassembling the actuator, refer to Fig. 2 or (the motor must be disconnected from the wiring) is to the wiring diagram in section 3.1 for the correct also given. wiring connection. RIVA FP SERVICE MANUAL - REV A...
  • Page 24 Remove the d.h.w. heat exchanger (see section 6.2). Fig. 7 Remove the fork J and move away the pipe K Reassemble the diverter group carrying out the (Fig. 6). removal operations in the reverse order. RIVA FP SERVICE MANUAL - REV A...

  • Page 25: Function

    ___________________________________________________________________________________________________ Third Part (edition-0106) Control p.c.b. 11.62 _______________________________________________________________ Control p.c.b. 11.62 6) Ignition Gas Pressure Adjustment 7) Max C.h. Power Regulation 8) Anti-frost System 1) Function 9) Hydraulic Parts Checking System 2) Selection and Adjustment Devices 10) Checks 3) Checking the Temperature 11) Removal of the Control p.c.b.
  • Page 26 Figure 3 With the boiler switched ON all the lamps (F in Figure 1) are activated. The following table gives the relationship between each of the possible lamp combinations and their meaning. Figure 2 RIVA FP SERVICE MANUAL – REV A...
  • Page 27 ___________________________________________________________________________________________________ Third Part (edition-0106) Control p.c.b. 11.62 _______________________________________________________________ RIVA FP SERVICE MANUAL – REV A...
  • Page 28 It allows the selection of the maximum supply current given to the modulator device. To set selector 2 correctly follow the table in Figure 6. Gas Suplly Position of selector Natural gas L.P.G. Figure 6 RIVA FP SERVICE MANUAL – REV A...

  • Page 29: Hydraulic Parts Checking System

    With the boiler operating (both in winter function pliers in the direction shown by the arrow in and in summer function) the hydraulic parts Figure 10. checking system is always active. RIVA FP SERVICE MANUAL – REV A...
  • Page 30 It is not necessary to force it in the knob. 9) While tightening the screws that fix the Control p.c.b. on the control panel, keep the p.c.b. towards the control panel fascia making sure RIVA FP SERVICE MANUAL – REV A...
  • Page 31 After 25 second circulator Primary circuit flow off and faulty primary cir switch OK? cuit (see LED table) Is primary circuit temperature higher than that selected? Operates motorised valve Supplies the ignition device RIVA FP SERVICE MANUAL – REV A...

  • Page 32: Fan And Air Pressure Device 11.61

    Checks A Fan and Air Press. Switch functioning device With the boiler operating and the burner on, open the negative pressure test point of the Venturi device. RIVA FP SERVICE MANUAL – REV A...

  • Page 33: Full Sequence Ignition Device S4567A-1019

    The ignition device has some components cover D of the connection; disconnect flame connected to it which can cause triggering of the detection cable E and ignition cable F (Figure shutdown condition; these components are: RIVA FP SERVICE MANUAL – REV A...
  • Page 34 Ignition time starts Presence of flame? Closes gas valve Stops ignition sparks Ignition time Memorizes shutdown finished? Shutdown indicator light on Stops ignition sparks Gas valve open Reset push button pressed? Presence of flame? RIVA FP SERVICE MANUAL – REV A...

  • Page 35: Modulating Gas Valve

    (C in Figure 2) until you obtain the required pressure exiting the valve. pressure (by rotating clockwise the pressure increases). Nomenclature 8) Turn the boiler off and disconnect one of the two connectors (D in Figure 2). RIVA FP SERVICE MANUAL – REV A...
  • Page 36 Figure 4 Warning: After cleaning or replacement as On-off operator detailed above, if it deemed approx. 1 122 Ω* necessary to undertake a combustion analysis. * at ambient temperature Figure 5 RIVA FP SERVICE MANUAL – REV A...

  • Page 37: Primary Circuit Flow Switch

    3) Open the box D (Figure 4) and disconnect the activate within 30 seconds the control board will switch. indicate that a fault condition has occurred. RIVA FP SERVICE MANUAL – REV A...
  • Page 38 2) Remove the fork C that holds the micro-switch housing D (Figure 4). 3) Unscrew the four screws E (see Figure 5) open the hydraulic operator and remove the membrane F. RIVA FP SERVICE MANUAL – REV A...
  • Page 39 Warning: isolate the boiler from the mains electricity supply before removing any covering or component. Remove the front panel of the case. Disconnect the connector C (Fig. 2) and remove Fig. 2 the sensor by delicately lifting up. 10-1 RIVA FP SERVICE MANUAL - REV A...

  • Page 40: Removal Of The C.h. Expansion Vessel

    2) Remove the protective cap C (Figure 2) from the valve on the top of the c.h. expansion vessel and connect a suitable air pressure gauge. 3) Check the pre-load pressure. It would be 14.5 psi. 11-1 RIVA FP SERVICE MANUAL – REV A...
  • Page 41 K and remove it (Figure 6). Figure 4 4) Remove the probe holder spring H freeing the probe I (Figure 5). Figure 6 6) Re-assemble the parts in reverse order of removal. Figure 5 RIVA FP SERVICE MANUAL – REV A 11-2...
  • Page 42 Unscrew the connector B and remove the by--- pass valve C (Fig. 2). Fig. 2 Fig. 1 Reassemble the by---pass valve as illustrated in Fig. 2 reversing the order of removal. RIVA FP SERVICE MANUAL - REV A 12 -1...

  • Page 43: Fan, Venturi Device And Air Pressure Switch

    Warning: Isolate the boiler from the mains the electric resistance between COM and electricity supply before removing N.O.. Between COM and N.O. the contact any covering or component. must be closed (electrical resistance zero). RIVA FP SERVICE MANUAL - REV A 13-1...
  • Page 44 Warning: To correctly connect the venturi pressure switch, refer to Figure 6 and Figure device to the Air pressure switch, 3 for the correct wiring. refer to Figure 6. RIVA FP SERVICE MANUAL - REV A RIVA FP SERVICE MANUAL - REV A 13-2...

  • Page 45: Ignition And Detection Electrodes, Burner And Injectors

    2) Check for the correct distance between the Figure 3 metallic edges of the ignition electrodes (see 5) Unscrew the screws D (Figure 4) which hold Figure 2). the electrodes to the burner. RIVA FP SERVICE MANUAL - REV A 14-1...
  • Page 46 6) Extract the electrodes from the burner. 7) Re-assemble the parts carrying out the removal operation in reverse order. Note: The metallic edge of the detection electrode is longer than the one of the ignition electrodes. RIVA FP SERVICE MANUAL - REV A 14-2...

  • Page 47: Safety Thermostat

    4) Remove the probe holder spring C freeing the safety probe D (Figure 3). Figure 1 Checks A Overheat temperature value 1) Set the temp. control knob to its maximum position and run the boiler. RIVA FP SERVICE MANUAL - REV A 15-1...
  • Page 48 Safety Thermostat _______________________________________________________________ Figure 3 5) Re-assemble the parts carrying out the removal operation in reverse order. 6) Apply an adequate quantity of heat conducting compound between the pipe and the thermostat. RIVA FP SERVICE MANUAL - REV A 15-2...

  • Page 49: Electric Resistances

    Fan Resistance Figure 1 Pump Resistance = 51.7 Ω. Gas Valve Resistance 114 Ω 7.2 Ω Figure 4 Figure 2 On-off operator approx. 1 122 Ω* * at ambient temperature Figure 5 RIVA FP SERVICE MANUAL - REV A 16-1...

  • Page 50: Short Spare Parts List

    Primary Circuit Temp. BI1001 117 I.T.S. Probe Ignition Electrode (left) BI1203 105 Network Components Ignition Electrode (right) BI1203 106 Network Components Detection Electrode BI1203 107 Network Components Temperature Pressure BI1555 100 Wika Italiana Gauge RIVA FP SERVICE MANUAL - REV A 17-1...
  • Page 51 ___________________________________________________________________________________________________ Third Part (edition-0106) Short Spare Parts List _______________________________________________________________ RIVA FP SERVICE MANUAL - REV A 17-2...
  • Page 52 _______________________________________________________________________________________ _____ _ __ ____ (edition-0106) _______________________________________________________________ RIVA FP SERVICE MANUAL – REV A...

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