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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 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
HEAT ONLY
Distributed By:
Quincy Hydronic Technologies, Inc.
80 Rochester AVE. Suite # 12
Portsmouth, NH 03801
Phone: 603-334-6400
Fax: 603-334-6401
RIVA HEAT ONLY MANUAL - REV A
Table of Contents
Summary of Contents for Verona WALL HUNG GAS BOILER
- Page 1 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 fire or explosion may result causing property damage, personal injury or loss of life.
- Page 2 RIVA HEAT ONLY MANUAL - REV A...
- 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.
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Page 4: Table Of Contents
Table of Contents Section Title Warnings Important Information General Information Technical Information (M130.30CR) Parts List Internal Piping and Parts List Electric Diagrams Installation Location Exhaust Pipe Location Mounting Bracket Venting Restrictor Sizing Fitting the Flue System Choice of Flue Pipe Connections Gas Pipe Connections Electrical Connections/Wiring Power Connection... -
Page 5: Warnings
Table of Contents Section Title Manifold Piping with Zone Valves or Circ. 14.3 Commissioning Initial Filling of the System Lightning the Boiler Checking the Gas Pres. at the Burner Adjustment of the Gas Pressure Checking the Ignition Device Checking the Burner Ignition Adjustment of the Useful c.h. - Page 6 Boiler is certified as an indoor appliance. Do not install boiler outdoors or locate where it will be exposed to freezing temperatures. 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.
- Page 7 Any appliance that burns natural gas, propane gas, fuel oil, wood or coal is capable of producing carbon monoxide (CO). Carbon Monoxide (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.
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Page 8: Important Information
• ALL BOILERS MUST BE INSTALLED IN ACCORDANCE WITH NATIONAL, STATE AND LOCAL PLUMBING, HEATING AND ELECTRICAL 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 knowledgeable in the layout and installation of heating systems should attempt the installation of any boiler. -
Page 9: General Information
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. - Page 10 2.Technical Information Cont. ENERGY CAPACITY Nominal heat input (0/2000ft) Nominal heat input (2000/4500ft) Minimum heat input Maximum useful output (0/2000ft) Maximum useful output (2000/4500ft) Minimum useful output GAS SUPPLY PRESSURE Normal Natural inwc Propane inwc 11.0 GAS PRESSURE AT BURNER Natural inwc Propane...
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Page 11: Parts List
3. Parts List Primary Components 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. -
Page 12: Internal Piping And Parts List
4. Internal Piping & Parts List 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... -
Page 13: Electric Diagrams
5. Electric Diagrams Electric supply terminal block External controls terminal block gnye bu bn bk bk bn - brown bu - blue bk - black wh - white rd - red gy - grey ye - yellow gnye - green/yellow RIVA HEAT ONLY MANUAL - REV A Safety Air Pressure... -
Page 14: Installation Location
6. Installation Location 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. -
Page 15: Exhaust Pipe Location
7. Exhaust Pipe Location EXTERNAL VENT SURFACES ARE HOT. IT IS RESPONSABILITY OF THE HOMEOWNER TO KEEP THE VENT TERMINAL CLEAR OF SNOW AND ICE NOTE: USE ONLY LISTED COMPONENTS SUPPLIED WITH THE BOILER. SURFACE DISCOLORATION OF THE BUILDING MAY OCCUR DUE TO IMPROPER INSTALLATION. -
Page 16: Mounting Bracket
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,spraying, rain, etc) during the appliance operation and service. -
Page 17: Venting
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 configurations shown on the following pages. -
Page 18: Choice Of Flue
9. Venting Cont. The following flue kits are available for connecting to the boiler: 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 elbow. - Page 19 9. Venting Cont. Standard separate horizontal flue kit (Exhaust & intake outside) Various twin (split) pipes kits and optional accessories (elbows) are available to assist in the termination of the flue where the boiler is installed in a location remote to an outside wall.
- Page 20 9. Venting Cont. Alternative separate kit (Exhaust outside & intake inside) Exhaust Pipe End Cap Air Intake Elbow Air Intake Pipe Air Intake Collar This configuration of the twin pipe kit allows to discharge the exhaust gasses outside. The air supply is obtained with an air intake pipe. This allows to take air from the room where the boiler is installed.
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Page 21: Pipe Connections
10. Pipe Connections The Riva boiler is supplied with a 3/4” stainless steel gas pipe (A in figure 10.1), 2 - 3/4” copper pipe (C,D in figure 10.1), located in a plastic bag in the boiler package. Figure 10.1 Installation: •... -
Page 22: Gas Pipe Connections
11. Gas Pipe Connections Gas supply piping is to be sized and installed properly 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. -
Page 23: Power Connection
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 For the electrical connection to the boiler use electric wires which conform to local regulations. 12.2 Connection to the electricity supply: •... -
Page 24: Room Thermostat Connection
12.3 Room Thermostat Connection: • The room thermostat must be connected to the terminal block situated next to the control panel To fused spur isolation switch Power supply terminal block External controls terminal block 120 VAC Control Terminal Block Figure 12.6 •... -
Page 25: Zone Valve Microswitch Connection
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 To fused spur isolation switch Power supply terminal block External controls terminal block 120 VAC Control Terminal Block Figure 12.10 Route the electrical... -
Page 26: Circulator Sizing
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. -
Page 27: Piping
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. Hydraulic Separator Min. Spacing 12" Max. Spacing 4x Primary Pipe Dia. - 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 Secondary Circulator Hydraulic Separator Supply Lines...
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Page 29: Manifold Piping With Zone Valves Or Circ
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 Return Water Temperature Gauge By-pass Valve Shut Off Valve System Return Manifold System Supply... -
Page 30: Commissioning
15. Commissioning • 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. Figure 15.1 • Open the installer supplied automatic fill valve between the cold water inlet and Central Heating System (See 28 on... -
Page 31: Checking The Gas Pres. At The Burner
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. -
Page 32: Adjustment Of The Gas Pressure
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. -
Page 33: Checking The Burner Ignition
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... -
Page 34: Labels Placement
15. Commissioning Cont. 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 labels on the boiler. Use label numbered as 1 (already installed in the front panel) to begin the placement in the correct way. -
Page 35: Instructing The User
15. Commissioning Cont. 15.9 Checking the flue system and combustion: • The flue system should be visually checked for soundness. Check all clamps, gaskets and fixings are secure and tight. • Ensure that the flue terminal is sited correctly in accordance with the flue fitting instructions. -
Page 36: Gas Conversion
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. -
Page 37: Annual Maintenance
17. Annual Maintenance 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 Service Person. -
Page 38: Cleanig The Burner
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. -
Page 39: Installer Notes
18. Installer Notes System Checkout: Boiler Model No.___________________ Original Purchaser: ___________________________ ___________________________ ___________________________ _____________________________________________________________________ Performance Tests: GROSS STACK TEMPERATURE ROOM TEMPERATURE (AMBIENT) NET STACK TEMPERATURE COMMENTS ___________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ RIVA HEAT ONLY MANUAL - REV A Serial No._______________ Installer: _______________________ _______________________ _______________________ _____________________... - Page 40 *1796212741* 17962.1274.1 2906 (40A4)USA...