BOILER INSTALLATION, OPERATION INSTRUCTIONS Riva FP 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.
Dear Customer: Thank you for buying a Biasi Riva FP Boiler System. The Riva FP 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 make the reader an expert in all aspects of installation and operation, and does not replace the need for a qualified, licensed heating contractor.
Table of Contents Section Title Section Number Warnings Important Information General Information Technical Information (M130.
Table of Contents Section Title Piping Section Number 14 Primary – Secondary Piping 14.1 Primary-Secondary with Zone Valves 14.2 Manifold Piping with Zone Valves or Circ. 14.3 Commissioning 15 Initial Filling of the System 15.1 Lightning the Boiler 15.2 Checking the Gas Pres. at the Burner 15.3 Adjustment of the Gas Pressure 15.4 Checking the Ignition Device 15.5 Checking the Burner Ignition 15.6 Adjustment of the Useful c.h. Output 15.7 Labels Placement 15.8 Checking the Flue System and Comb 15.
WARNING 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. — 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.
WARNING 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. BRIEF EXPOSURE TO HIGH CONCENTRATIONS OF CO, OR PROLONGED EXPOSURE TO LESSER AMOUNTS OF CO MAY RESULT IN CARBON MONOXIDE POISONING.
IMPORTANT INFORMATION Please read this page carefully. • 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.
1. General Information The Riva FP 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 49,476 BTU/h to 122,837 BTU/h. The boiler is shipped fully assembled with the components listed on page 10. All units are pressure and combustion tested at the factory prior to shipping. • Wall mountable - saving valuable floor space.
2. Technical Information Cont. ENERGY CAPACITY GAS FLOW RATE Nominal heat input (0/2000ft) MBH 122.8 Nominal heat input (2000/4500ft) MBH Minimum heat input Gas Min Max Natural ft³/h 48.7 121.1 116.7 Propane lb/h 2.2 5.6 MBH 49.5 CLEARANCE TO COMBUSTIBLES Maximum useful output (0/2000ft) MBH 100.7 Front in 18 Maximum useful output (2000/4500ft) Back in 0 MBH 95.9 Top in 8 Minimum useful output MBH 37.
3. Parts List Primary Components: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pump Pump vent plug Automatic air purger valve Modulation gas valve Flame-detecting electrode Ignition electrodes Burner Combustion chamber Primary heat exchanger Fan Air pressure switch Air switch pres. Test points Safety thermostat Modulation operator Gas valve outlet pres. Test point Gas valve inlet pres. Test point Central heating expansion vessel Central heating temp.
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.
5. Electric Diagrams 12 RIVA FP MANUAL Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
5. Electric Diagrams Cont. 5.
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. Greater clearances will simplify installation and service. Figure 6.
7. Exhaust Pipe Location CAUTION 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. 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.
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. Use the paper template provided with the boiler to determine the location of the mounting bracket.
9. Ventilation The Riva is a mechanical draft, side wall vented boiler. There are two side wall 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. There is also a vertical roof venting option. Regardless of what vent kit is installed, they should all conform to the Provisions for combustion and ventilation air in accordance with section 5.
9. Ventilation Cont. 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. 9.1 Restrictor Sizing: Each exhaust option is shipped standard with 3 feet of exhaust pipe, 3 feet of intake air pipe.
9. Ventilation Cont. 9.3 Choice of flue: The following flue kits are available for connecting to the boiler: A Standard coaxial horizontal flue kit (Exhaust & intake outside) Figure 9.3 (Coaxial 2.4/4.0 inches – nominal length 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. Minimum length required is 1 ft. Maximum equivalent length of 13.6 ft can be achieved utilizing extensions.
9. Ventilation 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 (elbows) are available to assist in the termination of the flue where the boiler is installed in a location remote to an outside wall. These kits allow for separation of the air supply pipe from the pipe that discharges the exhaust gasses.
9. Ventilation Cont. C Alternative separate kit (Exhaust outside & intake inside) Figure 9.5 (Twin Pipe φ 3.25 in) 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. If either an additional 45° or 90° accessory elbow is used then the maximum permissible lenght of either pipe must be reduced by 3.0 ft or 5.4 ft respectively.
9. Ventilation Cont. D Alternative separate kit (Exhaust outside & intake inside) Figure 9.6 (Twin Pipe φ 3.25 in) 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. If either an additional 45° or 90° accessory elbow is used then the maximum permissible lenght of either pipe must be reduced by 3.0 ft or 5.4 ft respectively.
9. Ventilation Cont. E Alternative separate kit (Exhaust & intake outside) Figure 9.7 (Twin Pipe φ 3.25 in) These kits allow for separation of the air supply pipe from the pipe that discharges the exhaust gasses. Consequently it is possible to extend the flue system to a greater distance than that provided by the standard coaxial horizontal flue. If either an additional 45° or 90° accessory elbow is used then the maximum permissible lenght of either pipe must be reduced by 3.0 ft or 5.4 ft respectively.
9. Ventilation Cont. F Standard Vertical-roof kit (Exhaust & intake outside) Figure 9.8 (vertical pipe φ 3.1 / φ 4.9 in) This kit allows vertical termination of the flue pipe through the roof. The kit is 1.2 min length. Extension pieces (Co--axial) are also available which allows the flue system to be extended to a total overall maximum permissible length of 29 ft. Optional 45° and 90° elbows can be used to offset the flue route.
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),2 – 1/2” (F,G in figure 10.1), located in a plastic bag in the boiler package. A) B) C) D) E) F) G) Stainless steel gas pipe Main circuit drain cock C.h. supply copper pipe C.h. return copper pipe C.h. PRV discharge copper pipe D h w outlet copper pipe D h w supply copper pipe Figure 10.
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.
12. Electrical Connections/Wiring 12.1 Power Connection: Removing Control Panel: • Remove screws C. 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 • • • Figure 12.2 Figure 12.3 Move the lower part of the side panels (figure 12.3). Pull the control panel. When completely pulled out, the panel can rotate 45° downward. Figure 12.
12. Electrical Connections/Wiring Cont. 12.3 Room Thermostat Connection: • The room thermostat must be connected to the terminal block situated next to the control panel. Figure 12.6 • Any external controls and connection lines must be rated at 120 VAC but under no circumstances should external live voltage be connected to the room thermostat link on the boiler. • When connecting any type of external control, the jumper J in Fig. 12.6 must be removed.
12. Electrical Connections/Wiring Cont. 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. Figure 12.10 • When connecting the zone valve switch, the jumper J in Fig. 12.10 must be removed. • Connect the micro switch of the zone valve to terminals 1 and 3 as shown in figure 12.11 • Connect the zone valve switch to the room thermostat as shown in figure 12.11 12.
13. Circulator Sizing 13.1 Circulator capacity as a function of flow rate: Figure 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 of the heating system, verify that the internal boiler circulator will overcome the head loss of the system at the designed flow rate using the graph above.
14. Piping All external piping components are to be supplied by the installer. It is very important to use a Primary Secondary piping scheme when an external circulator will be used. Also, when the boiler is piped in a primary secondary manner, it is necessary to us the central heating flow restrictor supplied with the boiler. The flow restrictor ensures that there will be enough back pressure to make the central heating flow switch in a low head loss piping system like primary secondary.
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.
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.
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.
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. Figure 15.1 • Open the installer supplied automatic fill valve between the cold water inlet and Central Heating System (See 28 on piping diagrams in previous section). • Open each radiator air vent starting at the lower point and close it only when clear water, free of bubbles, flows out.
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 front panel of the case. • Loosen the internal screw 15 (Figure 15.
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 valve outlet pressure test point (15 in Fig. 15.5) and connect the gauge. Figure 15.6 Ensure that the boiler is not range rated.
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 C in the position shown in figure 15.7 and ensure that the room thermostat is set to “heat demand”. • • Figure 15.7 Loosen screws D and remove the service panel (figure 15.8). • • • Figure 15.
15. Commissioning Cont. 15.8 Labels placement: 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 labels on the boiler. Use label numbered as 1 (already installed in the front panel) to begin the placement in the correct way.
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. To check the exhaust gas: • Remove the plugs indicated (Fig. 15.11). • Insert the analyzer probe in the exhaust gas sampling point or in the air intake sampling point.
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 appliance is switched off at the circuit breaker. • Remove the front and side panels of the case (see the section 17.
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 Service Person.
17. Annual Maintenance Cont. 17.5 Cleaning the primary heat exchanger: • Take off the front panel of the case, then the sealed chamber lid and the front panel of the combustion chamber. If you notice dirt on the fins of the primary heat exchanger (9 on page 10), cover the sloping surfaces of the burner (7 on page 10) entirely in a protective layer (sheets of newspaper or similar). Brush out the primary heat exchanger (9 on page 10) with a bristle paintbrush. 17.
18. Vent Part Spares For any spare parts, please contact QHT Inc. at 800-501-7697. Description Order Number Twin pipe kit 10999.0393.
18. Vent Part Spares Cont. For any spare parts, please contact QHT Inc. at 800-501-7697. RIVA FP MANUAL Description Order Number Coaxial flue kit 10999.0387.
18. Vent Part Spares Cont. For any spare parts, please contact QHT Inc. at 800-501-7697. Part Description Order Number A Roof flue kit 10999.0392.
19. Installer Notes System Checkout: Boiler Model No. ___________________ Serial No.
17962.1477.
