- DL manuals
- QHT
- Boiler
- Riva Plus
- Installation and operation instructions manual
QHT Riva Plus Installation and operation instructions manual
B
O
IL
E
R
I
N
S
T
A
L
L
A
T
IO
N
,
O
P
E
R
A
T
IO
N
IN
S
T
R
U
C
T
IO
N
S
Riva
PLUS
WALL HUNG GAS BOILER FOR
CENTRAL HEATING SUPPLY
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 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.
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.
Manufactured by:
Biasi S.p.A.
Verona, Italy
Distributed By:
Quincy Hydronic Technologies, Inc.
80 Rochester AVE. Suite # 12
Portsmouth, NH 03801
Phone: 603-334-6400
Fax: 603-334-6401
Summary of Riva Plus
Page 1
B o il e r i n s t a l l a t io n , o p e r a t io n in s t r u c t io n s riva plus wall hung gas boiler for central heating supply 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 ...
Page 2
Riva plus manual 2.
Page 3
Riva plus manual 3 dear customer: thank you for buying a biasi riva plus boiler system. The riva plus is a high efficiency 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 man...
Page 4
Riva plus manual 4 warnings - 6-7 important information - 8 general information 1 9 technical information (m135.30cr) 2 9-10 parts list 3 11 internal piping and parts list 4 12 electric diagrams 5 13 sequence of operation 5.1 14 installation location 6 15 exhaust pipe location 7 16 mounting bracket ...
Page 5
Riva plus manual 5 commissioning 15 initial filling of the system 15.1 37 lightning the boiler 15.2 37 checking the gas pres. At the burner 15.3 38 adjustment of the gas pressure 15.4 39 checking the ignition device 15.5 39 checking the burner ignition 15.6 40 adjustment of the useful c.H. Output 15...
Page 6
Riva plus manual 6 boiler is certified as an indoor appliance. Do not install boiler outdoors or locate where it will be exposed to freezing temperatures. — 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 ga...
Page 7
Riva plus manual 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. B...
Page 8
Riva plus manual 8 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 s...
Page 9
Riva plus manual 9 the riva plus is a high efficiency condensing, wall mounted gas boiler which provides central heat. The boiler features a gas valve which modulates the energy input from 49476 btu/h to 116008 btu/h. The boiler is shipped fully assembled with the components listed on page 11. All u...
Page 10
Riva plus manual 10 energy capacity nominal heat input (0/2000ft) mbh 116.0 nominal heat input (2000/4500ft) mbh 110.2 minimum heat input mbh 49.5 maximum useful output (0/2000ft) mbh 102.0 maximum useful output (2000/4500ft) mbh 97.2 minimum useful output mbh 41.6 gas supply pressure gas normal min...
Page 11
Riva plus manual 11 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. Test points 13. ...
Page 12
Riva plus manual 12 14 4 15 16 7 9 11 27 3 1 18 20 22 21 19 17 24 15 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 c 10 25 32 33.
Page 13
Riva plus manual 13 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 p m u p t i u c r i c y r a m i r ...
Page 14
Riva plus manual 14 5.1 sequence of operation.
Page 15
Riva plus manual 15 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 cle...
Page 16
Riva plus manual 16 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, 1 foot horizontally, or 1 foot ab...
Page 17
Riva plus manual 17 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 after a suitable installation location is chosen, verify that the mounting w...
Page 18
Riva plus manual 18 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...
Page 19
Riva plus manual 19 the commonwealth of massachusetts requires compliance with regulation 248 cmr 4.00 and 5.00 for installation of through – the – wall vented gas appliances as follows: (a) for direct-vent appliances, mechanical-vent heating appliances or domestic hot water equipment, where the bot...
Page 20
Riva plus manual 20 9. Venting cont..
Page 21
Riva plus manual 21 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 lenght 3.3 ft) it can be fitted to allow discharge to the rear or either side of ...
Page 22
Riva plus manual 22 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 ou...
Page 23
Riva plus manual 23 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...
Page 24
Riva plus manual 24 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 th...
Page 25
Riva plus manual 25 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 pr...
Page 26
Riva plus manual 26 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 b...
Page 27
Riva plus manual 27 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 a. Stainless steel gas pipe b. Main circuit drain cock c. C.H. Supply copper pipe d. C.H. Re...
Page 28
Riva plus manual 28 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 f...
Page 29
Riva plus manual 29 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....
Page 30
Riva plus manual 30 12.3 room thermostat connection: • the room thermostat must be connected to the terminal block situated next to the control panel. 1 2 l n 3 to fused spur isolation switch power supply terminal block external controls terminal block j 120 vac control terminal block figure 12.6 • ...
Page 31
Riva plus manual 31 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 l n 3 to fused spur isolation switch power supply terminal block external controls terminal block j 120 vac control terminal block...
Page 32
Riva plus manual 32 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 b...
Page 33
Riva plus manual 33 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...
Page 34
Riva plus manual 34 14.1 primary – secondary piping: all external piping components are to be supplied by the installer. It is very important to use a hydraulic separator before secondary circulators. 14. Piping cont..
Page 35
Riva plus manual 35 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 a hydraulic separator before secondary circulators. 14. Piping cont..
Page 36
Riva plus manual 36 14.3 manifold piping with zone valves (shown conn. To radiators): all external piping components are to be supplied by the installer. 14. Piping cont..
Page 37
Riva plus manual 37 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...
Page 38
Riva plus manual 38 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 operatin...
Page 39
Riva plus manual 39 15.4 adjustment of the gas pressure: • remove the front panel of the case. • take off the lid of the sealed chamber. • 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 net...
Page 40
Riva plus manual 40 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 s...
Page 41
Riva plus manual 41 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 labels on ...
Page 42
Riva plus manual 42 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 ...
Page 43
Riva plus manual 43 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 17.2 annual maintenance – dismantelling the external panel...
Page 44
Riva plus manual 44 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, m...
Page 45
Riva plus manual 45 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 pres...
Page 46
Riva plus manual 46 17.8 checking the flue: • make sure the seals are properly seated in the female ends of the vent pipe with the fins facing the male end of the pipe. • reinstall the elbow onto the horizontal run of the pipe first by simply pushing the parts together. • push the vent adapter down ...
Page 47
Riva plus manual 47 part description order number a separate vent termination b termination hardware c wall gaskets d separate flue vent pipe e separate vent sealing gaskets f separate vent 90 degree elbows g boiler vent adapter hardware h separate flue intake pipe i separate flue intake boiler adap...
Page 48
Riva plus manual 48 part description order number a coaxial intake pipe b coaxial termination pipe c coaxial union clamp d coaxial union gasket e coaxial exhaust gasket f coaxial boiler adapter gasket g coaxial boiler adapter h coaxial boiler adapter hardware i coaxial union clamp hardware j wall ga...
Page 49
Riva plus manual 49 part description order number a roof flashing kit (pitched or flat) b roof venting termination c roof venting termination collar d roof venting termination collar hardware e roof venting exhaust gasket f roof venting exhaust adapter g roof venting intake adapter h roof venting in...
Page 50
Riva plus manual 50
Page 51
Riva plus manual 51 system checkout: boiler model no.___________________ original purchaser: ___________________________ ___________________________ serial no._______________ installer: _______________________ _______________________ _______________________ __________________________________________...
Page 52
*1796213550* 17962.1355.0 4007 (44a4)usa.