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Manual Verona WALL HUNG GAS BOILER

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  • Verona WALL HUNG GAS BOILER - page 1

    Riva HEAT ONLY WALL HUNG GAS BOILER FOR CENTRAL HEATING SUPPLY BOILER INSTALLATION, OPERATION INSTRUCTIONS 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 not try to light any app ...

  • Verona WALL HUNG GAS BOILER - page 2

    RIVA HEAT ONLY MANUAL - REV A 2 ...

  • Verona WALL HUNG GAS BOILER - page 3

    Dear Customer: Thank you for buying a Biasi Riva Heating Only Boiler System. The Riva Heating Only is a high efficiency, non-condensing, wall mounted gas boiler which provides central heat supply water. We realize that it is not possible to answer all questions about the Riva boiler system in this manual. Reading this installation manual does not m ...

  • Verona WALL HUNG GAS BOILER - page 4

    Table of Contents Section Title Section Number Page Number Warnings - 6-7 Important Information - 8 General Information 1 9 Technical Information (M130.30CR) 2 9-10 Parts List 3 11 Internal Piping and Parts List 4 12 Electric Diagrams 5 13 Installation Location 6 14 Exhaust Pipe Location 7 15 Mounting Bracket 8 16 Venting 9 17-20 Restrictor Sizing ...

  • Verona WALL HUNG GAS BOILER - page 5

    Table of Contents Section Title Section Number Page Number Manifold Piping with Zone Valves or Circ. 14.3 29 Commissioning 15 30-35 Initial Filling of the System 15.1 30 Lightning the Boiler 15.2 30 Checking the Gas Pres. at the Burner 15.3 31 Adjustment of the Gas Pressure 15.4 32 Checking the Ignition Device 15.5 32 Checking the Burner Ignition 1 ...

  • Verona WALL HUNG GAS BOILER - page 6

    Boiler is certified as an indoor appliance. Do not install boiler outdoors or locate where it will be exposed to freezing temperatures. W ARNING — 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 touc ...

  • Verona WALL HUNG GAS BOILER - page 7

    Any appliance that burns natural gas, propane gas, fuel oil, wood or coal is capa ble of producing carbon monoxide (CO). Carbon Monox ide (CO) is a gas which is odorless, colorless and tasteless but is very toxic. CO is lighter than air and thus may travel throughout the building. BRIEF EXPOSURE TO HIGH CONCENTRATIONS OF CO, OR PROLONGED EXPOSURE T ...

  • Verona WALL HUNG GAS BOILER - page 8

    IMPORTANT INFORMATION Please read this page carefully. • ALL BOILERS MUST BE INSTALLED IN ACCORD ANCE WITH NATIONAL, STATE AND LOCAL PLUMBI NG, HEATING AND ELECT RICAL CODES AND ORDINANCES, AS WELL AS THE REGULATIONS OF THE SERVING ELECTRICAL, WATER AND GAS UTILITIES. • All systems should be designed by competent contractors, and only persons k ...

  • Verona WALL HUNG GAS BOILER - page 9

    1. General Information The Riva Heat Only is a high efficiency, non-condensing, wall mounted gas boiler which provides central heat. 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. All units are pressure and combustion t ...

  • Verona WALL HUNG GAS BOILER - page 10

    2.Technical Information Cont. ENERGY CAPACITY Nominal heat input (0/2000ft) MBH 122.8 Nominal heat input (2000/4500ft) MBH 116.7 Minimum heat input MBH 49.5 Maximum useful output (0/2000ft) MBH 100.7 Maximum useful output (2000/4500ft) MBH 95.9 Minimum useful output MBH 37.0 GAS SUPPLY PRESSURE Gas Normal Min Max Natural inwc 7.0 3.5 10.5 Propane i ...

  • Verona WALL HUNG GAS BOILER - page 11

    3. Parts List Primary Components : 2 4 3 7 5 8 9 6 10 12 16 14 11 15 18 19 13 20 26 1 1 Pump 2 Pump vent plug 3 Automatic air purger valve 4 Modulation gas valve 5 Flame-detecting electrode 6 Ignition electrodes 7 Burner 8 Combustion chamber 9 Primary heat exchanger 10 Fan 11 Air pressure switch 12 Air switch pres. Test points 13 Safety thermostat ...

  • Verona WALL HUNG GAS BOILER - page 12

    4. Internal Piping & Parts List 23 11 25 24 20 9 6 15 1 4 16 3 22 17 10 5 18 14 27 7 21 28 29 30 19 31 Note : Pressure Relief Valve (#19) should be piped to a drain or to the floor as lose as possible to a drain. RIVA HEAT ONLY MANUAL - REV A 12 ...

  • Verona WALL HUNG GAS BOILER - page 13

    5. Electric Diagrams ye bk wh gy bu rd bk gy gy gy M ~ t probe NTC C.h. temperature COM NO M ~ COM NO NC 1 2 3 bk bu bn rd rd gnye gy wh bu rd bk bu wh gy bu gnye bk bk gy gnye bu bk bk bu bu bu bu rd bk gy gy L N rd bu bn gnye gnye gnye bu bn bu rd gnye Flow Switch Primary Circuit Pump Valve Gas External controls terminal block Electric supply ter ...

  • Verona WALL HUNG GAS BOILER - page 14

    The installation location chosen must: • Comply with all clearances listed below. • Provide suitable location for the exhaust and intake venting. • Not be installed in an unheated space. • Comply with all local codes and standards. Note: Dimensions shown are minimums. Greater clearances will simplify installation and service. Figure 6.1 WAR ...

  • Verona WALL HUNG GAS BOILER - page 15

    7. Exhaust Pipe Location CAUTION EXTERNAL VENT SURFACES ARE HOT. The Exhaust Hood must be installed on the leeward side of house and conform to the following guidelines: 1. The Vent hood shall not be less than 3 feet above any forced air inlet to the house. 2. The Vent hood shall not be less than 4 feet below, 4 feet horizontally, or 1 foot above a ...

  • Verona WALL HUNG GAS BOILER - page 16

    8. Mounting Bracket After a suitable installation location is chosen, verify that the mounting wall is properly braced and strong enough to support the 80 pound weight of the unit when filled with water. NOTE: The boiler shall be installed such that the gas ignition system components are protected from water and liquids in general (dripping,sprayin ...

  • Verona WALL HUNG GAS BOILER - page 17

    9. Venting The Riva is a mechanical draft, side wall vented boiler. There are two flue options available - separate and coaxial. The coaxial option has one configuration shown on the next page. The separate option has two possible configuratio ns shown on the following pages. 9.1 Restrictor Sizing : Each exhaust option is shipped standard with 3 fe ...

  • Verona WALL HUNG GAS BOILER - page 18

    9. Venting Cont. 9.3 Choice of flue : The following flue kits are available for connectin g to the boiler: A Standard coaxial horizontal flue kit (Exhaust & intake outside) Figure 9.3 (Coaxial 2.4/4.0 inches – nominal lenght 3.3 ft) It can be fitted to allow discharge to the rear or either side of the boiler via the flanged boiler adapter elb ...

  • Verona WALL HUNG GAS BOILER - page 19

    9. Venting Cont. B Standard separate horizontal flue kit (Exhaust & intake outside) Figure 9.4 (Twin pipe φ 3.25 in) Various twin (split) pipes kits and optional accessories (elbow s) are available to assist in the termination of the flue where the boiler is installed in a locat ion remote to an outside wall. These kits allow for separation of ...

  • Verona WALL HUNG GAS BOILER - page 20

    9. Venting Cont. C Alternative separate kit (Exhaust outside & intake inside) Test Ports Exhaust Collar Exhaust Elbow Exhaust Pipe Rubber Wall Trim (2X) Exhaust Pipe End Cap Air Intake Elbow Air Intake Pipe Air Intake Collar Figure 9.5 (Twin Pipe Φ 3.25 in) This configuration of the twin pipe kit allows to discharge the e xhaust gasses outside ...

  • Verona WALL HUNG GAS BOILER - page 21

    10. Pipe Connections The Riva boiler is supplied with a 3/4” stainless steel gas pipe (A in figu re 10.1), 2 - 3/4” copper pipe (C,D in figure 10.1), located in a plastic bag in the boiler package. A B C D E Figure 10.1 A) Stainless steel gas pipe B) Main circuit drain cock C) C.h. return copper pipe D) C.h. supply copper pipe E) C.h. PRV disch ...

  • Verona WALL HUNG GAS BOILER - page 22

    11. Gas Pipe Connections Gas supply piping is to be sized and installed p roperly in order to provide a supply of gas sufficient to meet the maximum demand without undue loss of pressure between the meter and the boiler. Consult with the National Fuel Gas Code ANSI Z223.1 for proper sizing of gas piping for various lengths and diameters. Direction ...

  • Verona WALL HUNG GAS BOILER - page 23

    12.1 Power Connection: A A Figure 12.1 Removing Front Panel: • Remove the front panel by removing screws A and sliding the front panel up and away from the boiler Removing Side Panel: • Remove screws B B B C C B B Figure 12.2 Removing Control Panel: • Remove screws C. Figure 12.3 • Move the lower part of the side panels (figure 12.3). • P ...

  • Verona WALL HUNG GAS BOILER - page 24

    12.3 Room Thermostat Connection: • The room thermostat must be connected to the terminal block situated next to the control panel 1 2 LN 3 To fused spur isolation switch Power supply terminal block External controls terminal block J 120 VAC Control Terminal Block Figure 12.6 • Any external controls and connection lines must be rated at 120 VAC ...

  • Verona WALL HUNG GAS BOILER - page 25

    12.5 Zone Valve Micro Switch Connection: • The zone valve micro switch must be connected to the terminal block situated next to the control panel 1 2 LN 3 To fused spur isolation switch Power supply terminal block External controls terminal block J 120 VAC Control Terminal Block Figure 12.10 • When connecting the zone valve switch, the jumper J ...

  • Verona WALL HUNG GAS BOILER - page 26

    13. Circulator Sizing 13.1 Circulator capacity as a function of flow rate: Figura 13.1 The hydraulic specification in Fig 13.1 represent the pressure (available head for the central heating system) as a function of the flow rate. The pressure loss due to the internal piping in the boiler has already been substracted. When determining proper piping ...

  • Verona WALL HUNG GAS BOILER - page 27

    14. Piping 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. 23 11 25 24 20 9 6 15 1 4 16 3 22 17 10 5 18 14 27 7 21 28 29 30 19 Max. Spacing 4x Primary Pipe Dia. Typ. Min. Spacing 12" Secondar y Loo p s Seconda ...

  • Verona WALL HUNG GAS BOILER - page 28

    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 HEAT ONLY MANUAL - REV A 28 23 11 25 24 20 9 6 15 1 4 16 3 22 17 10 5 18 14 27 7 21 28 29 30 19 zone valve zone valve zone valv ...

  • Verona WALL HUNG GAS BOILER - page 29

    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. RIVA HEAT ONLY MANUAL - REV A 29 23 11 25 24 20 9 6 15 1 4 16 3 22 17 10 5 18 14 27 7 21 28 29 30 19 System Return Manifold System Supply Manifold (with zone valves or circulators By-p ...

  • Verona WALL HUNG GAS BOILER - page 30

    15. Commissioning 15.1 Initial filling of the system: • Remove the front panel of the case. • Unscrew the cap on the automatic air purger valve 3 (Fig 15.1) one full turn and leave open permanently. 3 2 Figure 15.1 • Open the installer supplied automatic fill valve between the cold water inlet and Central Heating System (See 28 on piping diag ...

  • Verona WALL HUNG GAS BOILER - page 31

    15. Commissioning Cont. 15.3 Checking the gas pressure at the burner: This boiler has been tested to the highest quality control standards. The maximum and minimum gas pressures are already set during this quality control process however the checking procedure must be followed to ensure maximum operating efficiency from the boiler. • Remove the f ...

  • Verona WALL HUNG GAS BOILER - page 32

    15. Commissioning Cont. 15.4 Adjustment of the gas pressure: • Remove the front panel of the case. • Open the gas valve inlet pressure test point (16 in Fig. 15.5) at the valve input, connect a suitable pressure gauge and check the gas pressure of the supply network. • Remove the gauge and close the pressure test point 16. • Open the gas va ...

  • Verona WALL HUNG GAS BOILER - page 33

    15. Commissioning Cont. 15.6 Checking the burner ignition: • Turn the boiler OFF. • Open the gas valve outlet pressure test point 15 (figure 15.5) and connect the gauge. • Turn the boiler ON positioning the function selector B in the position shown in figure 15.7 and ensure that the room thermostat is set to “heat demand”. B Figure 15.7 ? ...

  • Verona WALL HUNG GAS BOILER - page 34

    15. Commissioning Cont. 15.8 Labels placement: 1 4 2 3 5 Figure 15.10 Warning: The installation is not complete unless labels supplied are placed on the boiler as shown in Figure 15.10. All the labels supplied with the boiler are numbered for reference. According to Figure 15.10 place all the label s on the boiler. Use label numbered as 1 (already ...

  • Verona WALL HUNG GAS BOILER - page 35

    15. Commissioning Cont. 15.9 Checking the flue system and combustion: • The flue system should be visually che cked for soundness. Check all clamps, gaskets and fixings are secure and tight. • Ensure that the flue terminal is site d correctly in accordance with the flue fitting instructions. To check the exhaust gas: • Remove the plugs indica ...

  • Verona WALL HUNG GAS BOILER - page 36

    16. Gas Conversion WARNINGS : Procedures to adapt the boiler to the type of gas available must be carried out by a competent and responsible person. Components used to adapt it to the type of gas available must be genuine parts only. Procedures: • Check that the gas cock (30 on Section 4) fitted on the gas supply pipe is turned off and the applia ...

  • Verona WALL HUNG GAS BOILER - page 37

    17. Annual Maintenance 17.1 Warnings: The procedures detailed in this chapter must be carried out only by a professionally qualified person. Thus you are advised to contact an Authorised Service Agent. For efficient and continuous operation of the boiler you are advised to have, at least once a year, maintenance and cleaning done by an Approved Ser ...

  • Verona WALL HUNG GAS BOILER - page 38

    17. Annual Maintenance Cont. 17.5 Checking the pressurization in the expansion vessel: Empty the central heating system as described in section 17.3 of this chapter and check that the pressure in the expansion vessel is not less than 1 bar (14.5 psi). See also section 13.2 page 26 of this manual. If the pressure should be lower, take steps to corre ...

  • Verona WALL HUNG GAS BOILER - page 39

    18. Installer Notes System Checkout: Boiler Model No.___________________ Original Purchaser: ___________________________ ___________________________ ___________________________ Serial No._______________ Installer: _______________________ _______________________ _______________________ ________________________________________________________________ ...

  • Verona WALL HUNG GAS BOILER - page 40

    *1796212741* 17962.1274.1 2906 (40A4)USA ...

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