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Riva FP Installation & Operation Instructions

Wall hung gas boiler for central heating supply
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Riva
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 fi re or explosion may result causing property dam-
age, personal injury or loss of life.
— Do not store or use gasoline or other fl ammable 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. Fol-
low the gas supplier's instructions.
• If you can not reach your gas supplier call the fi re department.
— Installation and service must be performed by a qualifi ed installer,
service agency or the gas supplier.
FP
RIVA FP MANUAL

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  • Page 1 • If you can not reach your gas supplier call the fi re department. — Installation and service must be performed by a qualifi ed installer, service agency or the gas supplier. RIVA FP MANUAL...
  • Page 2 CSA 4.9 and is CSA compliant. This FP boiler has a 2 year warranty, a copy of which is provided with the boiler. Please be sure to return the warranty registration card as the warranty will be void without your boiler’s serial numbers (located on the ratings label affi...

  • Page 3: Table Of Contents

    12.1 Connection to the Electricity Supply 12.2 Room Thermostat Connection 12.3 Relay Panel Control Connection 12.4 Zone Valve Microswitch Connection 12.5 Finishing 12.6 Circulator Sizing Circ. Cap. as a Function of Flow Rate 13.1 Expansion Vessel 13.2 RIVA FP MANUAL...

  • Page 4: Warnings

    Checking the Pressuris. in C.h. Vess. 17.6 Cleanig the Burner 17.7 Cleaning the domestic hot water exchanger 17.8 Checking the Flue 17.9 Visual Inspection of Appliance 17.10 Gas Pressures and Soundness 17.11 Vent part spares 44-46 Installer Notes RIVA FP MANUAL...
  • Page 5 Caution: Do not use this boiler if any part has been under water. Immediately call a qualifi ed service technician to inspect the boiler and to replace any part of the control system and any gas control which has been under water. RIVA FP MANUAL...
  • Page 6 If any of the symptoms of CO occur, or if any of the signs of carbon monoxide are present, VACATE THE PREMISES IMMEDIATELY AND CONTACT A QUALIFIED HEATING SERVICE COMPANY OR THE GAS COMPANY OR THE FIRE DEPARTMENT. ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM WORK ON YOUR BIASI RIVA FP BOILER. RIVA FP MANUAL...

  • Page 7: Important Information

    - B149 Installation Codes E. ANSI/ASME - CSD-1 The above codes are available from: National Fire Protection Association (NFPA) CSA International Battery March Park 8501 E. Pleasant Valley Road Quincy, Massachusetts, 02269 Cleveland, OH 44134-5575 http://www.nfpa.org http://www.csa-international.org RIVA FP MANUAL...

  • Page 8: General Information

    1. General Information The Riva FP is a high effi ciency, non-condensing, wall mounted gas boiler which provides cen- tral heat. The boiler features a gas valve which modulates the energy input from 49,476 BTU/h to 122,837 BTU/h. The boiler is shipped fully assembled with the components listed on page 10.
  • Page 9 D.h.w. ΔT 30 K Twin split pipes 3.25/3.25 D.h.w. ΔT 35 K Nominal heat fl ow rate 122.8 D.h.w. ΔT 40 K (0/2000ft) Nominal heat fl ow rate 116.7 (2000/4500ft) Min Exhaust temperature °F Max Exhaust temperature °F RIVA FP MANUAL...

  • Page 10: Parts List

    17 Central heating expansion vessel 36 Domestic cold water inlet valve 18 Central heating temp. probe NTC 37 D.h.w. outlet pipe 19 Central heating pressure relief valve 38 Gas supply line cook 39 Water supply inlet cock 10 RIVA FP MANUAL...

  • Page 11: Internal Piping And Parts List

    4. Internal Piping & Parts List Note: Pressure Relief Valve (#19) should be piped to a drain or to the fl oor as lose as pos- sible to a drain. RIVA FP MANUAL...

  • Page 12: Electric Diagrams

    5. Electric Diagrams Caution: Label all wires prior to disconnection when servic- ing controls. Wiring errors can cause improper and danger- ous operation. Verify proper operation after servicing 12 RIVA FP MANUAL...

  • Page 13: Sequence Of Operation

    5. Electric Diagrams Cont. 5.1 Sequence of Operation RIVA FP MANUAL...

  • Page 14: Installation Location

    CO detector in the boiler room. Figure 6.2 When choosing an installation location insure the exhaust and intake pipes comply with NFPA 54. The drawing on the next page illustrates the restrictions on exhaust locations. 14 RIVA FP MANUAL...

  • Page 15: Exhaust Pipe Location

    9. The vent should not be situated so that the fl ue gases are directed towards brickwork,siding, or other construction , in such a manner that may cause damage from heat or condensate from the fl ue gases RIVA FP MANUAL...

  • Page 16: Mounting Bracket

    If you are using a separate pipe system drill holes marked B and C (ø 3.25”) shown below as well as on the paper template. 6. Remove paper template and hang boiler on bracket. Figure 8.1 16 RIVA FP MANUAL...

  • Page 17: Venting 9

    9. Ventilation The Riva is a mechanical draft, side wall vented boiler. There are two side wall fl ue options available – separate and coaxial. The coaxial option has one confi guration shown on the next page. The separate option has two possible confi gurations shown on the following pages.

  • Page 18: Restrictor Sizing

    9. Ventilation Cont. The Riva is a mechanical draft, side wall vented boiler. There are two fl ue options available - separate and coaxial. The coaxial option has one confi guration shown on the next page. The separate option has two possible confi gurations shown on the following pages.

  • Page 19: Choice Of Flue

    • Connect exhaust (inner) pipe to concentric elbow. • Connect intake (outer) pipe to concentric elbow. • Secure elbow to boiler using gasket and four screws provided. • Secure end cap on the intake pipe outside the house. RIVA FP MANUAL...
  • Page 20 • Attach each collar to the boiler with the gasket and screws provided. • Insert each elbow into its corresponding collar. • Connect each pipe to its corresponding elbow (as shown in the diagram). • Secure end cap on the intake and exhaust pipe outside the house. 20 RIVA FP MANUAL...
  • Page 21 • Slide one rubber wall trim piece on the pipe from inside and one from outside. • Attach each collar to the boiler with the gasket and screws provided. • Insert each elbow into its corresponding collar. • Connect each pipe to its corresponding elbow. RIVA FP MANUAL...
  • Page 22 • Slide one rubber wall trim piece on the pipe from inside and one from outside. • Attach each collar to the boiler with the gasket and screws provided. • Insert each elbow into its corresponding collar. • Connect each pipe to its corresponding elbow. 22 RIVA FP MANUAL...
  • Page 23 • Attach each collar to the boiler with the gasket and screws provided. • Insert each elbow into its corresponding collar. • Connect each pipe to its corresponding elbow (as shown in the diagram). • Secure end cap on the intake and exhaust pipe outside the house. RIVA FP MANUAL...
  • Page 24 • Connect exhaust (inner) pipe to concentric elbow. • Connect intake (outer) pipe to concentric elbow. • Secure elbow to boiler using gasket and four screws provided. • Secure end cap on the intake pipe outside the house. 24 RIVA FP MANUAL...

  • Page 25: Pipe Connections

    10. Pipe Connections The Riva boiler is supplied with a 3/4” stainless steel gas pipe (A in fi gure 10.1), 2 - 3/4” cop- per pipe (C,D in fi gure 10.1),2 – 1/2” (F,G in fi gure 10.1), located in a plastic bag in the boiler package.

  • Page 26: Gas Pipe Connections

    ½ psi(3.5 kPa). WARNING DO NOT USE A FLAME FOR CHECKING GAS LEAKS 26 RIVA FP MANUAL...

  • Page 27: Electrical Connections/Wiring

    (as shown in fi gure 12.5) keeping the same connections for the live wire and the neutral wire WARNING Note: Do not connect live wires to thermostat terminals 1-3. Figure 12.5 • Connect the earth wire(yellow/green). Boiler must be wired directly to earth ground on breaker panel. RIVA FP MANUAL...

  • Page 28: Room Thermostat Connection

    Figure 12.9 • When connecting any type of relay con- • Connect the dry contact switch to termi- nals 1 and 3 shown in Fig. 12.9. trol, the jumper J in Fig. 12.8 must be re- moved. 28 RIVA FP MANUAL...

  • Page 29: Zone Valve Microswitch Connection

    • Route the electrical supply cord and the external control cord as illustrated in Fig. 12.12. Figure 12.12 • Lock the cords in place with the fl exible cord clamps. • Replace the control panel reversing the steps on page 27. RIVA FP MANUAL...

  • Page 30: Circulator Sizing

    23 ft at most. For greater differences, increase the pre-load pressure in the C.h. expansion vessel (17 on page 10) and the system when cold, by 0.1 bar for additional 3.3 ft. For systems with volumes greater than 154l, an additional expansion vessel must be provided. 30 RIVA FP MANUAL...

  • Page 31: Piping

    Riva boiler. This is essential to ensure that the fl ow switch will operate properly. The second method is a hydraulic separator. Hydraulic separators are available commercially;...

  • Page 32: Primary - Secondary Piping

    14. Piping Cont. 14.1 Primary – Secondary Piping: All external piping components are to be supplied by the installer. It is very important to use an hydraulic separator before secondary circulators. 32 RIVA FP MANUAL...
  • Page 33 14. Piping Cont. 14.2 Primary – Secondary Piping with Zone Valves: All external piping components are to be supplied by the installer. It is very important to use an hydraulic separator before secondary circulators. RIVA FP MANUAL...
  • Page 34 14. Piping Cont. 14.3 Manifold Piping with Zone Valves or Circulators (shown conn. to radiators): All external piping components are to be supplied by the installer. 34 RIVA FP MANUAL...

  • Page 35: Commissioning

    D will appear. To reset the boiler turn the knob C (fi gure 15.3) on the 0 position and then press and release the boiler reset button D (Fig. 15.3). RIVA FP MANUAL...

  • Page 36: Checking The Gas Pres. At The Burner

    • Switch on the boiler. points must be sealed. • Check the maximum gas pressure and com- pare the value on the gauge with the value indicated in the Section 2 on page 9 (gas pressures at the burner). 36 RIVA FP MANUAL...

  • Page 37: Adjustment Of The Gas Pressure

    (D on Figure 15.3). To reset the boiler turn the knob B (fi gure 15.3) on the 0 position and then press and release the boiler reset button (C on Figure 15.3). RIVA FP MANUAL...

  • Page 38: Checking The Burner Ignition

    Adjust the gas pressure at the burner to the value according to the useful c.h. output wanted (Tab. 15.1). • Reassemble the service panel. • Close the gas valve outlet pressure test point 15 (fi gure 15.5). • Reassemble the front pannel of the case. 38 RIVA FP MANUAL...

  • Page 39: Labels Placement

    All the labels supplied with the boiler are numbered for reference. According to Figure 15.10 place all the labels on the boiler. Use label numbered as 1 (already installed in the front panel) to begin the placement in the correct way. RIVA FP MANUAL...

  • Page 40: Instructing The User

    9.84 10.56 1010 1190 1390 1590 inwc. 1.64 2.16 2.73 3.37 4.05 4.77 5.58 6.38 Propane Kg/h 1.20 1.37 1.55 1.71 1.88 2.04 2.20 2.36 lb/h 2.64 3.02 3.41 3.76 4.14 4.49 4.85 5.20 Table 15.1 40 RIVA FP MANUAL...

  • Page 41: Gas Conversion

    (included with the conver- sion kit) indicating the type of gas, and the gas pressures to which the appliance has been set. • Reassemble the front and side panels of the case. RIVA FP MANUAL...

  • Page 42: Annual Maintenance

    Fig. 17.3). • Open the pressure reducing automatic fi ll valve (28 on Section 4) Figure 17.3 17.4 Emptying the Domestic Hot Water circuit: • Close the inlet valve • Open the system domestic hot water valves. 42 RIVA FP MANUAL...

  • Page 43: Cleanig The Burner

    Visually inspect all water joints, seals and connections for any evidence of leakage and re- tighten, grease or replace them as necessary. 17.11 Gas pressures and soundness: Check appliance for gas soundness. Recheck operational pressures and adjust as necessary as described in Section 15.4 page 37 of this manual. RIVA FP MANUAL...

  • Page 44: Vent Part Spares

    18. Vent Part Spares For any spare parts, please contact QHT Inc. at 800-501-7697. Description Order Number Twin pipe kit 10999.0393.0 44 RIVA FP MANUAL...
  • Page 45 18. Vent Part Spares Cont. For any spare parts, please contact QHT Inc. at 800-501-7697. Description Order Number Coaxial fl ue kit 10999.0387.0 RIVA FP MANUAL...
  • Page 46 18. Vent Part Spares Cont. For any spare parts, please contact QHT Inc. at 800-501-7697. Part Description Order Number Roof fl ue kit 10999.0392.0 46 RIVA FP MANUAL...

  • Page 47: Installer Notes

    Boiler Model No. ___________________ Installer: Original Purchaser: ________________________ ___________________________ ________________________ ___________________________ ________________________ ___________________________ _______________________________________________________________________ Performance Tests: GROSS STACK TEMPERATURE __________________ ROOM TEMPERATURE (AMBIENT) ________________ NET STACK TEMPERATURE _____________________ __________________ ___________________ SMOKE READING ___________________ COMBUSTION EFFICIENCY _________________ COMMENTS ___________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ RIVA FP MANUAL...
  • Page 48 17962.1477.0 3808 (48A4)USA...

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