Biasi Riva Plus Handbuch
USER MANUAL AND INSTRUCTIONS
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. Fol-• low 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 dam-
age, personal injury or loss of life.
RivaPLUS
RivaPLUS
2 RIVA PLUS USER MANUAL
Dear Customer:
Thank you for buying a Biasi Riva Plus Boiler System.
The Riva Plus is a high eff ciency condensing, wall mounted gas boiler which
provides central heat.
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 quali f ed, licensed heating
contractor. We urge you to contact your installing contractor or distributor if you are in question
about any aspect of your boiler’s performance. Our main concern is that you are satisf ed with
your boiler and its performance. We require that your contractor complete eff ciency tests using
instruments.
The external controls and accessories listed in this manual (excluding those supplied inside
the boiler) are intended to serve as guidelines rather than speci f c recommendations. We re-
alize that other makes and models of such devices are available and can be used as suc-
cessfully as those we specify. The installing contractor is the best judge of a system’s specif c
requirements, as well as the local availability of certain makes and models of controls and
accessories. The preceding does not apply, however, to the equipment that comes with every
boiler, such as the overheat control and pressure relief valves. The installation of the spe-
cific devices supplied with every boiler is absolutely necessary to the safe operation of
the boiler and protection of the heating system.
All BIASI wall hung boilers are built in accordance with the ASME boiler and pressure vessel
code, and bear the “H” stamp. The Entire range of applications for the Riva Plus has been
tested to standard CSA 4.9 and is CSA compliant.
This Riva boiler 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 af f xed to the boiler), date of installation and the
name of your installer being on record in our f les.
Thank you for purchasing our Riva Plus boiler . If you have questions or comments, please
don’t hesitate to contact us immediately. Our goal is 100% customer satisfaction.
QHT inc.
RIVA PLUS USER MANUAL 3
Table of Contents
Section Title Section Number Page Number
Warnings - 4-5
Important Information - 6
General Information 1 7
Technical Information 2 7-8
Appliance Description 3 9
Operation Lights 4 10
Instructions for Use 5 11-13
Warnings 5.1 11
Ref lling Procedure 5.2 11
Lighting/Operation Instruction 5.3 12
Central Heating Circuit Temp. 5.4 12-13
Extinguishing Instructions 5.5 13
Useful Advice 6 14-16
Central Heating 6.1 14
Frost Protection 6.2 14
Periodic Maintenance 6.3 14
External Cleaning 6.4 15
Operational Faults 6.5 15-16
Warranty 17
4 RIVA PLUS USER MANUAL
WARNING
DANGER
Boiler is certif ed as an indoor appliance. Do not install boiler outdoors or locate where it will
be exposed to freezing temperatures.
Caution: Do not store or use flammable materials, chemicals or flammable liquids,
especially gasoline, in the vicinity of this heating appliance.
Caution: Should overheating occur or the gas supply fail to shut off, do not turn
off or disconnect the electrical supply to the pump. Instead, shut off the gas
supply at a location external to the appliance.
Caution: Do not use this boiler if any part has been under water. Immediately
call a qualified service technician to inspect the boiler and to replace any part of
the control system and any gas control which has been under water.
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 build-• ing.
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, ser-— vice agency or the gas supplier.
WARNING: If the information in this manual is not followed
exactly, a fire or explosion may result causing property dam-
age, personal injury or loss of life.
RIVA PLUS USER MANUAL 5
WARNING
Any appliance that burns natural gas, propane gas, fuel oil, wood or coal is capable of pro-
ducing 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. EXPOSURE CAN BE
FATAL AND EXPOSURE TO HIGH CONCENTRATIONS MAY RESULT
IN THE SUDDEN ONSET OF SYMPTOMS INCLUDING
UNCONSCIOUSNESS.
Symptoms of CO poisoning include the following:
dizziness vision problems shortness of breath
headache loss of muscle control unclear thinking
nausea weakness unconsciousness
The symptoms of CO poisoning are often confused with those of inf uenza, and the highest
incidence of poisoning occurs at the onset of cold weather or during f u season.
A victim may not experience any symptoms, only one symptom, or a few symptoms.
Suspect the presence of carbon monoxide if symptoms tend to disappear when you
leave your home.
The following signs may indicate the presence of carbon monoxide:
Hot gasses from appliance, venting system pipes or chimney , escaping into the living •
space.
Flames coming out around the appliance.•
Yellow colored f ames in the appliance.•
Stale or smelly air.•
The presence of soot or carbon in or around the appliance.•
Very high unexplained humidity inside the building.•
If any of the symptoms of CO occur, or if any of the signs of carbon monoxide are present,
VACATE THE PREMISES IMMEDIATELY AND CONTACT A QUALIFIED HEATING SER-
VICE COMPANY OR THE GAS COMPANY OR THE FIRE DEPARTMENT.
ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM WORK
ON YOUR BIASI RIVA PLUS BOILER.
6 RIVA PLUS USER MANUAL
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. It is the responsibility of the installing contractor
to see that all controls are correctly installed and operating properly when the
installation is completed.
This boiler is intended for use, only with propane or natural gas. All flammable• liquids (especially gasoline), chemicals, rags, paper, wood scraps, debris, etc.,
should be kept away from the boiler at all times. Keep the boiler area clean and
free of all fire hazards.
Please read the literature and warranties supplied by the manufacturers of the• various accessory equipment. This equipment is warranted by the respective
manufacturers, not by Quincy Hydronic Technologies, Inc. Each piece of
equipment must be installed and used according to the recommendations of
the manufacturer.
Codes and Regulations:
Installation of the boiler and related equipment must conform to national, state and
local regulating agencies and codes applicable to the installation of the equipment. In
the absence of local requirements, the following codes apply:
A. ANSI/NFPA - #70 National Electric Code
B. ANSI/NFPA - #211 Chimneys and Vents
C. ANSI/NFPA - #Z223.1 National Fuel Gas Code
C. ANSI/NFPA - Domestic Gas Conversion Burner
D. CAN/CGA - 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 PLUS USER MANUAL 7
General Information1.
Technical Information (M135.30CR)2.
The Riva Recuper is a high ef f ciency 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. All units are pressure and
combustion tested at the factory prior to shipping.
Key Features:
Wall mountable - saving valuable f oor •
space.
Several f ue options available•
Electronic spark ignition•
Safety f ow switch - positioned on the •
main circuit, which monitors the f ow and
protects the main heat exchanger from
thermal shock should there be a lack of
water in the system.
Frost protection - contains an integral frost •
protection system to prevent frost dam-
age which can occur in areas susceptible
to very cold weather conditions.
Boiler operation recognition system - •
should the boiler not be used for longer
than 24 hours, it then performs a control-
led system test to ensuring the motorized
components within the boiler do not be-
come inoperable due to lack of use.
Gas valve modulation - the gas input •
modulates based off central heating tem-
perature to within ± 2 ºF
Diagnostic information system equipped •
with three LED diagnostic lights for quick
error assessment.
GENERAL
Height in 31.6
Width in 15.8
Depth in 13.8
Weight lb 98.1
CENTRAL HEATING
Maximum working temp. °F 185
Temp. Regulation range* °F 100-176
Maximum pressure psi 30.0
Minimum pressure psi 4.35
Max head loss (at 4.4 GPM) ft 10
*At the minimum useful output
8 RIVA PLUS USER MANUAL
2. Technical Information Cont.
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 Max
Natural inwc 7.0 3.5 10.5
Propane inwc 11.0 8.0 13.0
GAS PRESSURE AT BURNER
Gas Min Max Ignition
Natural inwc 1.0 4.8 2.4
Propane inwc 2.0 10.3 5.1
FLUE DESIGN
Minimum Venturi pressure inwc 0.64
Flue pipe diameter
Coaxial in 2.25/4
3.25/5
Twin split pipes in 3.25/3.25
Nominal heat f ow rate MBH 116.0
Nominal heat f ow rate
(2000/4500ft) MBH 110.2
Min Exhaust temperature °F 158
Max Exhaust temperature °F 158
INJECTORS No. Size
Natural 14 130
Propane 14 85
GAS FLOW RATE
Gas Min Max
Natural ft³/h 48.7 115.1
Propane lb/h 2.23 5.25
ELECTRICAL
Voltage V 120
Frequency Hz 60
Current A 1.6
Power consumption W 180
FLUE GAS FIGURES
Gas Min Max
CO2 2.5% 6.3%
O2 16.5% 9.7%
CLEARANCE TO COMBUSTIBLES
Front in 18
Back in 0
Top in 8
Sides in 2
Bottom in 8
Flue pipe enclosed in 2
Flue pipe free air in 0
RIVA PLUS USER MANUAL 9
Appliance Description3.
Overview:3.1
1 Case front panel
2 Control panel
3 Control panel cover
Control Panel:3.2
4 Central heating circuit temperature and
pressure gauge
5 Lock-out signal lamp
6 Boiler reset button
7 Function switch and Central heating
temperature adjustment knob
8 Appliance operation lights
1
2
3
876 5 4
Piping Connections:3.3
9 C.h. PRV discharge pipe
10 Central heating f ow pipe
11 Central heating return pipe
12 Gas inlet pipe
13 Condensate drain connection area
Figure 3.1
Figure 3.2
Figure 3.3
10 RIVA PLUS USER MANUAL
Operation Lights4.
Three lights (8 in Fig. 3.2) give detailed indication regarding the operation of the boiler . The
following table gives the relationship between each of the possible light combinations and their
meaning.
A short pulse every 4 seconds: stand-by condition Function
selector in position. Anti-freeze system active
1 second pulse every 2 seconds: normally operating boiler.
Function selector in on position
Central heating operation
Frost protect operation
Faulty central heating temperature probe NTC
Faulty primary circuit (no water or absence of f ow)
Lack of burner ignition (no ignition signal from the full se-
quence ignition device)
Ignition gas pressure adjustment
Minimum gas pressure adjustment
Lamp OFF Lamp ON
Flashing lamp, alone
or simultaneously
with another lamp.
Flashing lamp, al-
ternate with another
lamp
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