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

Biasi Riva Combi Installation & Operation Instructions

Wall hung gas boiler for central heating and domestic hot water supply
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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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Summary of Contents for Biasi Riva Combi

  • 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 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 3: 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 32-35 Primary-Secondary Piping 14.1 Primary-Secondary with Zone Valves 14.2 RIVA COMBI MANUAL - REV B...

  • Page 4: Warnings

    Checking the Pressures. in D.h.w. Vess. 17.7 Checking the Magnesium Anode 17.8 Cleaning the Burner 17.9 Checking the Flue 17.10 Visual Inspection of Appliance 17.11 Gas Pressures and Soundness 17.12 Installer Notes and Vent Part Spares Vent Part Spares RIVA COMBI MANUAL - REV B...
  • Page 5 — 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 6 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 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 COMBI MANUAL - REV B...

  • Page 8: 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 9 Flue pipe diameter 2.25/4 Coaxial 3.25/5 Twin split pipes 3.25/3.25 Nominal heat flow rate 122.8 (0/2000ft) Nominal heat flow rate 116.7 (2000/4500ft) Min Exhaust temperature °F Max Exhaust temperature °F INJECTORS Size Natural Propane RIVA COMBI MANUAL - REV B...

  • Page 10: 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 11: 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 12: Electric Diagrams

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

  • Page 13: Sequence Of Operation

    5.1 Sequence of Operation RIVA COMBI MANUAL - REV B...

  • Page 14: Installation Location

    Note : For boilers in an enclosed Each opening free area = space it is recommended to install 1 sq. inch per 2,000 BTU/h Outside a CO detector in the boiler room. Air Opening 0 to 12" Figure 6.2 RIVA COMBI MANUAL - REV B...

  • Page 15: Exhaust Pipe Location

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

  • Page 16: Mounting Bracket

    Remove paper template and hang boiler on bracket. 11.2 A e B 15.7 Supporto di fissaggo caldaia 35.4 D.h.w. C.h. C.h. return D.h.w. inlet pipe D.h.w. outlet pipe C.h. Supply 2.0 3.3 23.6 18.1 Figure 8.1 RIVA COMBI MANUAL - REV B...

  • Page 17: Venting

    B149, Installation Codes, or applicable provisions of the local building codes. If the Biasi Riva replaces a boiler that was attached to a common vent system, the common venting system is likely to be too large for proper venting of the appliances remaining connected to it. To...

  • Page 18: Venting 9

    3. A Product-approved vent terminal must be used, and if applicable, a Product-approved air intake must be used. Installation shall be in strict compliance with the manufacturer’s instructions. A copy of the installation instructions shall remain with the appliance or equipment at the completion of the installation. RIVA COMBI MANUAL - REV B...

  • Page 19: Restrictor Sizing

    If one or more extensions have to be used they must be adequately supported so that there is no sag in the flue pipe and a minimum fall of 1.5 degree (0.3 in per ft) over the whole length away from the boiler is ensured. RIVA COMBI MANUAL - REV B...

  • Page 20: 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 COMBI MANUAL - REV B...
  • Page 21 • 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 COMBI MANUAL - REV B...
  • 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. RIVA COMBI MANUAL - REV B...
  • Page 23 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 COMBI MANUAL - REV B...
  • Page 24 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 COMBI MANUAL - REV B...
  • Page 25 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 COMBI MANUAL - REV B...

  • Page 26: Pipe Connections

    • Thoroughly clean the system piping, review the for servicing operation connections. suggested piping • Attach the supplied diagrams in Section 4 components to the boiler (page 12). connections (see Figures 10.1). Be sure to RIVA COMBI MANUAL - REV B...

  • Page 27: Gas Pipe Connections

    1/2 psi (3.5 kPa). WARNINGS DO NOT USE A FLAME FOR CHECKING GAS LEAKS RIVA COMBI MANUAL - REV B...

  • Page 28: 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 29: Room Thermostat Connection

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

  • Page 30: Zone Valve Microswitch Connection

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

  • Page 31: Circulator Sizing

    38.5 gallons (154l), an additional expansion vessel must be provided. 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 32: Piping

    An example of a hydraulic separator is given in Figure 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 33 All external piping components are to be supplied by the installer. It is very important to use a 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 34 All external piping components are to be supplied by the installer. It is very important to use a hydraulic separator before secondary circulators. Biasi Riva Combi Boiler Zone Valves Secondary Boiler Return Boiler Supply Circulators Backflow Preventor Air Elimination Hydraulic Separator Pressure Reducing Valve RIVA COMBI MANUAL - REV B...

  • Page 35: 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 36: Commissioning

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

  • Page 37: Lightning The Boiler

    If external connector E (Figure controls are fitted (e.g. 15.5). room thermostat) • Switch on the boiler. ensure they "call for heat". RIVA COMBI MANUAL - REV B...

  • Page 38: 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 39: Checking The Burner Ignition

    • Loosen screws K and remove the service • Reassemble the front panel of the case. panel (figure 15.9). • To carry out the adjustment use the adjustment device (RISC) with the help of a screwdriver. RIVA COMBI MANUAL - REV B...

  • Page 40: 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 41: 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 42: Gas Conversion

    Position of deflector (figure 16.1) Gas supply the switch 2 • Loosen the screws C Natural gas and remove the front L.P.G. panel of the combustion chamber Figure 16.3 RIVA COMBI MANUAL - REV B...
  • Page 43 • Turn on the boiler. indicating the type of • Calibrate the gas valve gas, and the gas according to the pressures to which the instructions given in appliance has been set. section 15.5 of this manual. RIVA COMBI MANUAL - REV B...

  • Page 44: Annual Maintenance

    (37 on Section 4) • Open the central heating drain cock (F in Fig. 17.4). • Loosen the d.h.w. storage tank air purge Figure 17.4 valve (G in Fig. 17.5) Figure 17.5 RIVA COMBI MANUAL - REV B...

  • Page 45: Checking The Magnesium Anode

    (29 on page 12) cleaned and the efficiency of the flue safety circuit checked at least once a year. For all the above maintenance operations it is advisable to call an approved Service Engineer. RIVA COMBI MANUAL - REV B...

  • Page 46: 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 47 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 48 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 49 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 50 Installer: ___________________________ _______________________ ___________________________ _______________________ ___________________________ _______________________ _____________________________________________________________________ Performance Tests: GROSS STACK TEMPERATURE __________________ ROOM TEMPERATURE (AMBIENT) ________________ NET STACK TEMPERATURE _____________________ __________________ ___________________ SMOKE READING ___________________ COMBUSTION EFFICIENCY _________________ COMMENTS ___________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ RIVA COMBI MANUAL - REV B...
  • Page 52 *1796212111* 17962.1211.1 2906 (44A4)USA...

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