Biasi Riva Plus Combi Istruzioni per l'installazione

Riva

BOILER INSTALLATION, OPERATION

INSTRUCTIONS

Riva

PLUS COMBI

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.

MANUEL RIVA COMBI - REV A

2 RIVA PLUS COMBI MANUAL

Dear Customer:

Thank you for buying a Biasi Riva Plus Combi.

The Riva Plus Combi 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 Plus Combi 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 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 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 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 Combi has

been tested to standard CSA 4.9 and is CSAcompliant.

This Riva Plus 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 Plus Combi. If you have questions or comments, please

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

QHT inc.

RIVA PLUS COMBI MANUAL 3

Table of Contents

Section Title Section Number Page Number

Warnings - 5-6

Important Information - 7

General Information 1 8

Technical Information (M135.30CM) 2 8-9

Parts List 3 10

Internal Piping and Parts List 4 11

Electric Diagrams 5 12

Sequence of operation 5.1 13

Installation Location 6 14

Exhaust Pipe Location 7 15

Mounting Bracket 8 16

Venting 9 17-24

Restrictor Sizing 9.1 18

Fitting the Flue System 9.2 18

Choice of Flue 9.3 19-24

Pipe Connections 10 25

Gas Pipe Connections 11 26

Electrical Connections/Wiring 12 27-29

Power Connection 12.1 27

Connection to the Electricity Supply 12.2 27

Room Thermostat Connection 12.3 28

Relay Panel Control Connection 12.4 28

Zone Valve Microswitch Connection 12.5 29

Finishing 12.6 29

Circulator Sizing 13 30

Circ. Cap. as a Function of Flow Rate 13.1 30

Expansion Vessel 13.2 30

Piping 14 31-34

4 RIVA PLUS COMBI MANUAL

Table of Contents

Section Title Section Number Page Number

Primary-Secondary with Zone Valves 14.2 33

Manifold Piping with Zone Valves or Circ. 14.3 34

Commissioning 15 35-41

Initial Filling of the System 15.1 35

Lightning the Boiler 15.2 35

Checking the Gas Pres. at the Burner 15.3 36

Adjustment of the Gas Pressure 15.4 37

Checking the Ignition Device 15.5 37

Checking the Burner Ignition 15.6 38

Adjustment of the Useful c.h. Output 15.7 38

Labels Placement 15.8 38

Checking the Flue System and Comb. 15.9 39

Instructing the User 15.10 40

Gas Conversion 16 41

Annual Maintenance 17 42-44

Warnings 17.1 42

Dismantelling the External Panels 17.2 42

Emptying the C.h. System 17.3 42

Emptying the D.h.w.circuit 17.4 43

Cleanig the Burner. 17.5 43

Checking the combustion fan 17.6 43

Checking the Flue 17.7 43

Checking the press. in the exp.vassel 17.8 44

Visual Inspection ofAppliance 17.9 44

Gas Pressures and Soundness 17.10 44

Cleanig the primary heat exchanger 17.11 44

Cleanig the domestic hot water exchanger 17.12 44

Condensate trap 17.13 44

Vent Part Spares 18 45-47

Installer Notes 19 48

RIVA PLUS COMBI MANUAL 5

WARNING

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 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.

DANGER

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.

6 RIVA PLUS COMBI MANUAL

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 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.• 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 SERVICE COMPANY OR THE GAS COMPANY OR THE FIRE

DEPARTMENT.

ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM

WORK ON YOUR BIASI RIVA COMBI BOILER.

RIVA PLUS COMBI MANUAL 7

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

8 RIVA PLUS COMBI MANUAL

General Information1.

Technical Information (M135.30CM)2.

The Riva Plus Combi 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 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.

Frostprotection-containsan 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 con-

trolled system test to ensuring the motor-

ized components within the boiler do not

become 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 15.7

Depth in 13.8

Weight lb 109.5

ELECTRICAL

Voltage V 120

Frequency Hz 60

Current A 1.6

Power consumption W 180

INJECTORS No. Size

Natural 14 130

Propane 14 89

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 8.25

*At the minimum useful output

RIVA PLUS COMBI MANUAL 9

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 5.2

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 ﬂow rate

(0/2000ft) MBH 116.0

Nominal heat ﬂow rate

(2000/4500ft) MBH 110.2

Min Exhaust temperature °F 130

Max Exhaust temperature °F 195

GAS FLOW RATE

Gas Min Max

Natural ft³/h 48.7 115.1

Propane lb/h 2.2 5.2

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

FLUE GAS FIGURES

Gas Min Max

CO22.5% 6.3%

O216.5% 9.7%

DOMESTIC HOT WATER

Maximum temperature °F 131

Minimum temperature °F 95

Maximum pressure psi 145

Minimum pressure psi 4.35

D.h.w. ΔT 25K gal/h 4.5

D.h.w. ΔT 30 K gal/h 3.8

D.h.w. ΔT 35 K gal/h 3.2

D.h.w. ΔT 40 K gal/h 2.8

10 RIVA PLUS COMBI MANUAL

Parts List3.

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. Safety thermostat

14. Modulation operator

15. Gas valve outlet pres. Test point

16. Gas valve inlet pres. Test point

17. Central heating expansion vessel

18. Central heating temp. Probe NTC

19. Central heating pressure relief valve

20. Primary circuit ﬂow switch

21. Main circuit drain cock

22. By-pass valve

23. Three-way diverter valve

24. Venturi device

25. Flue outlet pipe

26. Air Intake Pipe

27. Control panel

28. Safety thermostat probe

29. Pressure reducing automatic ﬁll valve

30. Backﬂow preventer

31. Gas supply line cock

32. Water supply inlet cock

33. Condensate trap

34. Condensing heat exchanger

35. Flue termostat

36. D.h.w heat exchanger

37. D.h.w ﬂow switch

38. Domestic water circuit ﬁlter

39. D.h.w ﬂow limiter

40. Domestic hot water temp.probe NTC

41. Domestic cold water inlet valve

42. D.h.w. outlet pipe

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