Biasi RIVA COMBI Manual

USER MANUAL AND INSTRUCTIONS

Riva COMBI

WALL HUNG GAS BOILER FOR

CENTRAL HEATING AND DOMESTIC

HOT WATER 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

RIVA COMBI USER MANUAL - REV

RIVA COMBI USER MANUAL - REV A 2

RIVA COMBI USER MANUAL - REV A 3

Dear Customer:

Thank you for buying a Biasi Riva Combi Boiler System.

The Riva Combi is a high efficiency, non-condensing, wall mounted gas boiler which

provides central heat and domestic hot water.

We realize that it is not possible to answer all questions about the Riva Combi 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. 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 satisfied with your boiler and its performance. We require that your

contractor complete efficiency 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 specific

recommendations. We realize that other makes and models of such devices are available

and can be used as successfully as those we specify. The installing contractor is the best

judge of a system's specific 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 specific 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 Combi

has been tested to standard CSA 4.9 and is CSA compliant.

This Riva Combi 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 affixed to the boiler), date of

installation and the name of your installer being on record in our files.

Thank you for purchasing our Riva Combi boiler. If you have questions or comments,

please don't hesitate to contact us immediately. Our goal is 100% customer satisfaction.

QHT inc.

Table of Contents

Section Title Section Number Page

Warnings - 5-6

Important Information - 7

General Information 1 8

Technical Information 2 8-9

Appliance Description 3 10

Operation Lights 4 11

Instructions for Use 5 12-14

Warnings 5.1 12

Refilling Procedure 5.2 12

Lighting/Operation Instruction 5.3 13

Central Heating Circuit Temp. 5.4 13-14

Domestic Hot Water Temp. 5.5 14

Extinguishing Instructions 5.6 15

Useful Advice 6 16-18

Central Heating 6.1 16

Frost Protection 6.2 16

Periodic Maintenance 6.3 16

External Cleaning 6.4 17

Operational Faults 6.5 17-18

Warranty 19

RIVA COMBI USER MANUAL - REV A 4

Boiler is certified as an indoor appliance. Do not install boiler outdoors or locate where

it will be exposed to freezing temperatures.

ARNING

— 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.

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.

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 store or use flammable materials, chemicals or flammable

liquids, especially gasoline, in the vicinity of this heating appliance.

DANGER

RIVA COMBI USER MANUAL - REV A 5

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. 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 influenza, and the

highest incidence of poisoning occurs at the onset of cold weather or during flu 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 flames in the appliance.

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 SERVICE COMPANY OR THE GAS COMPANY OR THE FIRE

DEPARTMENT.

ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM

WORK ON YOUR BIASI RIVA COMBI BOILER.

• Stale or smelly air.

• The presence of soot or carbon in or

around the appliance.

• Very high unexplained humidity inside

the building.

ARNING

RIVA COMBI USER MANUAL - REV A 6

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:

RIVA COMBI USER MANUAL - REV A 7

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)

Battery March Park

Quincy, Massachusetts, 02269

http://www.nfpa.org

CSA International

8501 E. Pleasant Valley Road

Cleveland, OH 44134-5575

http://www.csa-international.org

1. General Information

The Riva Combi is a high efficiency, non-condensing, wall mounted gas boiler which

provides central heat and domestic hot water. 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. All units are pressure and combustion tested at the factory prior to

shipping.

Key Features:

• Wall mountable - saving valuable

floor space.

• Several flue options available.

• Electronic spark ignition.

• Safety flow switch - positioned on the

main circuit, which monitors the flow

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 damage 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 controlled system test to

ensuring the motorized components

within the boiler do not become

inoperable due to lack of use.

• Gas valve modulation - the gas input

modulates based off central heating

and domestic hot water temperature

to within ± 2 ºF.

• Diagnostic information system

equipped with three LED diagnostic

lights for quick error assessment.

2. Technical Information

(

M35.30CB

)

RIVA COMBI USER MANUAL - REV A 8

GENERAL

Height in

35.4

Width in

23.6

Depth in 18.1

Weight lb

172

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

DOMESTIC HOT WATER

Maximum temperature °F 140

Minimum temperature °F 100

Maximum pressure psi 116

Useful tank capacity gal 13.2

D.h.w circuit flow rate

∆T = 30 °K gpm 3.99

Continous d.h.w production

∆T = 25 °K gpm 4.54

Continous d.h.w. production

∆T = 40 °K gpm 2.85

Preparation time min 7’57”

2.Technical Information Cont.

RIVA COMBI USER MANUAL – REV A 9

ENERGY CAPACITY

Nominal heat input

(0/2000ft) MBH 122.8

Nominal heat input

(2000/4500ft) MBH 116.7

Minimum heat input MBH 49.5

Maximum useful output

(0/2000ft) MBH 100.7

Maximum useful output

(2000/4500ft) MBH 95.9

Minimum useful output MBH 37.0

GAS SUPPLY PRESSURE

Gas Normal Min Max

Natural inwc 7.0 3.5 10.5

Propane inwc 11.0 8.0 12.0

GAS PRESSURE AT BURNER

Gas Min Max Ignition

Natural inwc 0.8 5.3 2.4

Propane inwc 1.4 9.0 5.2

FLUE DESIGN

Minimum Venturi pressure inwc 0.66

Flue pipe diameter

Coaxial in

2.25/4

3.25/5

Twin split pipes in 3.25/3.25

Nominal heat flow rate

(0/2000ft) MBH 122.8

Nominal heat flow rate

(

2000/4500ft

)

MBH 116.7

Min Exhaust temperature °F 255

Max Exhaust temperature °F 302

INJECTORS No. Size

Natural 14 130

Propane 14 89

GAS FLOW RATE

Gas Min Max

Natural ft³/h 48.7 121.1

Propane lb/h 2.23 5.55

ELECTRICAL

Voltage V 120

Frequency Hz 60

Current A < 1.6

Power consumption W 176

3. Appliance Description

3.1 Overview:

1 Case front panel

2 Control panel

3 Control panel cover

3.2 Control Panel:

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 Domestic hot water temperature

adjustment knob

9 Appliance operation lights

Figure 3.1

9 78 6 5 4

Figure 3.2

3.3 Piping Connections:

10 D.h.w. PRV discharge pipe

11 C.h. PRV discharge pipe

12 Domestic cold water inlet pipe

13 Domestic hot water outlet pipe

14 Central heating flow pipe

15 Central heating return pipe

16 Gas inlet pipe

15 1213 10 11

Figure 3.3

RIVA COMBI USER MANUAL – REV A 10

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