Biasi Riva Plus Manual

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

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

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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