Biasi Riva Combi Installation & Operation Instructions
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Biasi Riva Combi Installation & Operation Instructions

Biasi Riva Combi Installation & Operation Instructions

High efficiency, non-condensing, wall mounted gas boiler
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Riva
WALL HUNG GAS BOILER FOR
CENTRAL HEATING AND DOMESTIC

HOT WATER 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
COMBI
Distributed By:
Quincy Hydronic Technology, Inc.
3560 Lafayette Road
Portsmouth, NH 03801
Phone: 603-334-6400
Fax: 603-334-6401
RIVA COMBI MANUAL - REV B

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  • Page 1: Hot Water Supply

    — Installation and service must be performed by a qualified installer, service agency or the gas supplier. Manufactured by: Distributed By: Biasi S.p.A. Quincy Hydronic Technology, Inc. Verona, Italy 3560 Lafayette Road Portsmouth, NH 03801 Phone: 603-334-6400 Fax: 603-334-6401 RIVA COMBI MANUAL - REV B...
  • Page 2 RIVA COMBI MANUAL - REV B...
  • Page 3 CSA 4.9 and is CSA compliant. This Riva Combi 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 affixed to the boiler), date of installation and the name of your installer being on record in our files.

  • Page 4: Table Of Contents

    12.3 Relay Panel Connection 12.4 Zone Valve Microswitch Connection 12.5 Circulator Sizing Circ. Cap. as a Function of Flow Rate 13.1 Expansion Vessels 13.2 Piping 27-29 Primary-Secondary Piping 14.1 Primary-Secondary with Zone Valves 14.2 RIVA COMBI MANUAL - REV B...

  • Page 5: Warnings

    Checking the Pressuriz. in C.h. Vess. 17.6 Checking the Pressuriz. in D.h.w. Vess. 17.7 Checking the Magnesium Anode 17.8 Cleanig the Burner 17.9 Checking the Flue 17.10 Visual Inspection of Appliance 17.11 Gas Pressures and Soundness 17.12 RIVA COMBI MANUAL - REV B...
  • Page 6 — Installation and service must be performed by a qualified installer, service agency or the gas supplier. DANGER Caution: Do not store or use flammable materials, chemicals or flammable liquids, especially gasoline, in the vicinity of this heating appliance. RIVA COMBI MANUAL - REV B...
  • Page 7 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 COMBI BOILER. RIVA COMBI MANUAL - REV B...

  • Page 8: 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 COMBI MANUAL - REV B...

  • Page 9: General Information

    1. General Information The Riva Combi is a high efficiency, non-condensing, wall mounted gas boiler which provides central heat and domestic hot water. The boiler features a gas valve which modulates the energy input from 44,000 BTU/h to 108,000 BTU/h. The boiler is shipped fully assembled with the components listed on page 11.
  • Page 10 3.25/5 Sides Twin split pipes 3.25/3.25 Bottom Nominal heat flow rate 122.8 Flue pipe enclosed (0/2000ft) Flue pipe free air Nominal heat flow rate 116.7 (2000/4500ft) Min Exhaust temperature °F Max Exhaust temperature °F RIVA COMBI MANUAL - REV B...

  • Page 11: Parts List

    37 Pressure reducing automatic fill valve 18 Modulation operator 38 Backflow preventer 19 Gas valve outlet pres. Test point 39 Gas supply line cock 20 Gas valve inlet pres. Test point 40 D.h.w. inlet cock RIVA COMBI MANUAL - REV B...

  • Page 12: Internal Piping And Parts List

    Pressure Relief Valves (#24, #25) should be piped to a drain or to the floor as close as possible to a drain. • This diagram is a graphical representation only and is not drawn to scale. Do not use for piping purposes. RIVA COMBI MANUAL - REV B...

  • Page 13: Electric Diagrams

    Caution: Label all wires prior to disconnection when ye - yellow servicing controls. Wiring errors can cause vt - violet og - orange improper and dangerous operation. gnye - green/yellow Verify proper operation after servicing RIVA COMBI MANUAL - REV B...
  • Page 14 5.1 Sequence of Operation RIVA COMBI MANUAL - REV B...

  • Page 15: Installation Location

    Air Opening 0 to 12" 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. RIVA COMBI MANUAL - REV B...

  • Page 16: Exhaust Pipe Location

    USE ONLY LISTED COMPONENTS SUPPLIED WITH THE BOILER. SURFACE DISCOLORATION OF THE BUILDING MAY OCCUR DUE TO IMPROPER INSTALLATION. QHT WILL NOT ACCEPT RESPONSIBILITY OR LIABILITY FOR SUCH DISCOLORATION. The Exhaust Hood must be installed on the leeward side of house and conform to the following guidelines: 1.

  • Page 17: 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. Remove paper template and hang boiler on bracket. RIVA COMBI MANUAL - REV B...

  • Page 18: Venting

    RIVA COMBI MANUAL - REV B...

  • Page 19: Restrictor Sizing

    If additional flue piping is need for a particular application, it can be ordered separately in 3 feet increments. Depending on the final flue pipe length, an alternative restrictor may be required. Refer to the tables 9.1 for proper restrictor ring sizing RIVA COMBI MANUAL - REV B...

  • Page 20: Fitting The Flue System

    9. Venting Cont. 9.3 Choice of flue: The following flue kits are available for connecting to the boiler: Standard coaxial horizontal flue kit (Exhaust & intake outside) RIVA COMBI MANUAL - REV B...
  • Page 21 • Secure elbow to boiler using gasket and four screws provided. • Secure end cap on the intake pipe outside the house. 9. Venting Cont. Standard separate horizontal flue kit (Exhaust & intake outside) RIVA COMBI MANUAL - REV B...
  • Page 22 • Connect each pipe to its corresponding elbow (as shown in the diagram). • Secure end cap on the intake and exhaust pipe outside the house. 9. Venting Cont. Alternative separate configuration (Exhaust outside & intake inside) RIVA COMBI MANUAL - REV B...
  • 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. 9. Venting Cont. Alternative separate kit (Exhaust outside & intake inside) RIVA COMBI MANUAL - REV B...
  • Page 24 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. 9. Venting Cont. Alternative separate kit (Exhaust & intake outside) RIVA COMBI MANUAL - REV B...
  • Page 25 Connect each pipe to its corresponding elbow (as shown in the diagram). • Secure end cap on the intake and exhaust pipe outside the house. 9. Venting Cont. Standard Vertical-roof kit (Exhaust & intake outside) RIVA COMBI MANUAL - REV B...

  • Page 26: Pipe Connections

    The Riva boiler is supplied with a 3/4” stainless steel gas pipe (A in figure 10.1), 4 - 3/4” copper pipe (C,D,J,K in figure 10.1), 2 - 1/2” copper pipe (E,H in figure 10.1), located in a RIVA COMBI MANUAL - REV B...
  • Page 27 • Attach the supplied the suggested piping components to the diagrams in Section 4 boiler connections (page 12). (see Figures 10.1). Be sure to RIVA COMBI MANUAL - REV B...

  • Page 29: Gas Pipe Connections

    The boiler and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa). WARNINGS DO NOT USE A FLAME FOR CHECKING GAS LEAKS RIVA COMBI MANUAL - REV B...

  • Page 30: Electrical Connections/Wiring

    Note: Do not connect live wires to thermostat terminals 1-3. Power supply terminal block External controls terminal block Figure 12.5 • Connect the earth wire(yellow/green). Boiler must be wired directly to earth ground on breaker panel. RIVA COMBI MANUAL - REV B...

  • Page 31: Room Thermostat Connection

    VAC control terminal Figure 12.9 block (Fig 12.9). • Connect the dry contact switch to External controls terminals 1 and 3 terminal block shown in Fig. 12.9. 120 VAC Control Terminal Block Figure 12.8 RIVA COMBI MANUAL - REV B...

  • Page 32: Zone Valve Microswitch Connection

    To the external control device To the fused spur isolation switch as illustrated in Fig. • Replace the control 12.12. panel reversing the steps on page 23. Figure 12.12 RIVA COMBI MANUAL - REV B...

  • Page 33: Circulator Sizing

    The d.h.w. expansion vessel (25 on page 11) allows the expansion of the water inside the storage tank (16 on page 11) and also absorbs the water hammer inside the pipe. RIVA COMBI MANUAL - REV B...

  • Page 34: Piping

    14.2. It is important that the separator be at least 2” in size to ensure proper performance. Boiler supply Boiler Return No more than 8" ¾” 1 ¼” 2" System supply System return At least 16" RIVA COMBI MANUAL - REV B...
  • Page 35 All external piping components are to be supplied by the installer. It is very important to use an hydraulic separator before secondary circulators. BIASI RIVA COMBI BOILER SECONDARY CIRCULATOR BOILER SUPPLY BOILER RETURN ELIMINATION HYDRAULIC BACKFLOW SEPARATOR PREVENTOR AND PRESSURE REDUCING VALVE RIVA COMBI MANUAL - REV B...
  • Page 36 All external piping components are to be supplied by the installer. It is very important to use an hydraulic separator before secondary circulators. Biasi Riva Combi Boiler Zone Valves Secondary Boiler Return Boiler Supply Circulators Air Elimination Backflow Preventor Hydraulic Separator Pressure Reducing Valve RIVA COMBI MANUAL - REV B...

  • Page 37: Manifold Piping With Zone Valves Or Circ

    14.3 Manifold Piping with Zone Valves or Circulators (shown conn. to radiators): All external piping components are to be supplied by the installer. Biasi Riva Combi Boiler Biasi Steel Boiler Return Boiler Supply Panel Radiators Backflow Preventor Pressure Reducing Valve Zone Valves RIVA COMBI MANUAL - REV B...

  • Page 38: Commissioning

    2 (Fig. 15.3); release the pump by turning the Figure 15.2 rotor in the direction • Open the installer indicated by the arrow supplied automatic fill RIVA COMBI MANUAL - REV B...

  • Page 39: Lightning The Boiler

    • Disconnect the gas taps and disconnect maximum position. If modulator coil by the pressure gauge. external controls are Important: after the checks all of the test points must be sealed. RIVA COMBI MANUAL - REV B...

  • Page 40: Adjustment Of The Gas Pressure

    (D on Figure 15.4). To reset the boiler turn the knob B (figure 15.4) on the 0 position and then press and release the boiler reset button (C on Figure 15.4). RIVA COMBI MANUAL – REV B...

  • Page 41: Checking The Burner Ignition

    15.8 and • By rotating the device point 19 (figure 15.6). ensure that the room clockwise the • Reassemble the front pressure increases. pannel of the case. RIVA COMBI MANUAL – REV B...

  • Page 42: Labels Placement

    All the labels supplied with the boiler are numbered for reference. According to Figure 15.11 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 COMBI MANUAL – REV B...

  • Page 43: Instructing The User

    0.88 1.00 1.32 1.89 2.57 3.33 4.22 5.34 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 Tab 15.1 RIVA COMBI MANUAL – REV B...

  • Page 44: Gas Conversion

    Gas supply the switch 2 • Loosen the screws C Natural gas and remove the front L.P.G. panel of the Figure 16.3 combustion chamber • Carry out the moving it to the left for RIVA COMBI MANUAL – REV B...
  • Page 45 • Turn on the boiler. indicating the type of • Calibrate the gas gas, and the gas valve according to the pressures to which instructions given in the appliance has section 15.5 of this been set. manual. RIVA COMBI MANUAL – REV B...

  • Page 46: Annual Maintenance

    (37 on Section • Open the central heating drain cock (F in Fig. 17.4). • Loosen the d.h.w. Figure 17.4 storage tank air purge Figure 17.5 valve (G in Fig. 17.5) RIVA COMBI MANUAL – REV B...

  • Page 47: Checking The Magnesium Anode

    • • Remove the vent connector from Using a flashlight inspect each the boiler by pulling vertically on length of vent pipe for obstructions and dirt build up. RIVA COMBI MANUAL - REV B...

  • Page 48: Visual Inspection Of Appliance

    17.13 Gas pressures and soundness: Check appliance for gas soundness. Recheck operational pressures and adjust as necessary as described in Section 15.5 page 32 of this manual. RIVA COMBI MANUAL - REV B...
  • Page 49 Separate vent sealing gaskets Separate vent 90 degree elbows Boiler vent adapter hardware Separate flue intake pipe Separate flue intake boiler adapter Separate flue exhaust boiler adapter Exhaust adapter gasket Exhaust restrictor Separate flue intake termination RIVA COMBI MANUAL - REV B...
  • Page 50 Order Number Coaxial intake pipe Coaxial termination pipe Coaxial union clamp Coaxial union gasket Coaxial exhaust gasket Coaxial boiler adapter gasket Coaxial boiler adapter Coaxial boiler adapter hardware Coaxial union clamp hardware Wall gaskets RIVA COMBI MANUAL - REV B...
  • Page 51 Roof venting intake gasket Roof venting boiler adapter exhaust gasket Roof venting boiler adapter Roof venting boiler adapter hardware Roof venting boiler adapter gasket For any spare parts, please contact QHT Inc. at 800-501-7697. RIVA COMBI MANUAL - REV B...
  • Page 52 RIVA COMBI MANUAL - REV B...
  • Page 53 Installer: ___________________________ _______________________ ___________________________ _______________________ ___________________________ _______________________ _____________________________________________________________________ Performance Tests: GROSS STACK TEMPERATURE __________________ ROOM TEMPERATURE (AMBIENT) ________________ NET STACK TEMPERATURE _____________________ __________________ ___________________ SMOKE READING ___________________ COMBUSTION EFFICIENCY _________________ COMMENTS ___________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ RIVA COMBI MANUAL - REV B...
  • Page 54 *1796212111* 17962.1211.1 2906 (44A4)USA...

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