Rima ONGAS NOVA User manual

ONGAS NOVA FLOOR TYPE CONDENSING BOILER
* ONGAS NOVA 09 * ONGAS NOVA 14
* ONGAS NOVA 10 * ONGAS NOVA 15
* ONGAS NOVA 11
* ONGAS NOVA 12
* ONGAS NOVA 13
USER’S
MANU
AL

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1. General Information ..........................................................................................................................5
1.1. Introduction...............................................................................................................................5
1.2. Certificates................................................................................................................................6
1.3.1. Explanations of the Symbols .................................................................................................6
1.3.2. General Warnings and Recommendations.............................................................................8
1.3.2.1. Points to be Considered During Handling and Transport...................................................8
1.3.3. Power Saving.........................................................................................................................8
1.3.4. Cascade Configuration...........................................................................................................9
1.3.5. Safety Instructions .................................................................................................................9
1.4. Responsibilities.........................................................................................................................9
1.4.1 Things To Do Before Calling an Authorized Service.............................................................10
1.5. Explanation of the Symbols on the Packaging .........................................................................12
1.5.1. Parts Delivered With the Product ..........................................................................................13
1.6. Data and Packaging Labels.......................................................................................................13
2. General Specifications of the Condensing Boiler........................................................................14
2.1. Components of the Floor Type Condensing Boiler..................................................................14
2.2. Technical Specifications of the Floor Type Condensing Boiler...............................................15
3. Installation and Commissioning........................................................................................................16
3.1. Minimum Distances Recommended........................................................................................17
3.2. Dimensions of the Floor Type Condensing Boiler..................................................................18
3.3. Gas Connections......................................................................................................................19
3.4. Power Connections..................................................................................................................20
3.5. Electrical Wiring Diagram.......................................................................................................21
3.6. Commissioning........................................................................................................................23
4.Operation of the Control Panel ..........................................................................................................24
4.1. Control Panel Screen ...............................................................................................................24
4.2. Application Modes...................................................................................................................24
4.3. Programming ...........................................................................................................................28
TABLE OF CONTENTS

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4.4. User Levels..............................................................................................................................30
4.5. Operation of Control Panel Accessories..................................................................................32
5. Installation and Inspection of the Piping ...........................................................................................34
5.1. Heating (Radiator) Water.........................................................................................................34
5.1.1. Water Conditioning...............................................................................................................35
5.1.2. Water Pressure......................................................................................................................35
5.2. Condensation Water Drain.......................................................................................................37
5.3. Instructions for the Adjustment of Gas Ratio..........................................................................37
5.3.1. Instructions for the Adjustment of Gas Ratio.......................................................................37
5.4. Flue Connections.....................................................................................................................39
5.4.1. Examples of Installation .......................................................................................................40
5.5. Hydraulic Piping Connection Diagram Examples …………………………………………...42
6.Error Codes List..................................................................................................................................42
7.Cleaning and Maintenance .................................................................................................................49
7.1. Inspection of the Burning System............................................................................................50
7.2. Cleaning of the Modulated Fan, Venturi, Burner....................................................................50
8.Warranty Conditions and Commissioning ......................................................................................51
8.1. Condensing Boiler Commissioning Form ..............................................................................53
8.2. Operating Instructions.............................................................................................................54
8.3. Inspection of the Condensing Boiler System..........................................................................56

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1.1. Introduction
First of all, we would like to thank you for choosing the RIMA brand.
In this manual, you will find installation and operation information for the RIMA branded floor type
natural gas condensing heating boilers with aluminium cast fins manufactured by ÖNMETAL.
Please read this booklet carefully in order to operate your device with high efficiency and economically,
comfortably and for a long period.
DO NOT tamper with any component or setting of your device for any reason other than as described in
this manual, such as operating, adjusting, or maintaining the device.
Have your device installed by Authorised Dealers.
Our Authorised Dealers and After-sales Service Centers shall provide you with the necessary information
about the operation and maintenance of your device after placing the device, making the required
connections and commissioning it.
In case you cannot contact with our Authorised Services and for any problems you have, our Central
Technical Service shall help you.
We wish you to use your boiler in good times.
1.2.Certificates
Önmetal Döküm Sanayi ve Tic. Ltd. Şti. is certified with the Certificate of Competency with After-sales
Services as per TS 12676 Authorised Services - The Rules for the Boilers and Heat Exchangers as the
scope of the service dated and numbered 14.09.2011/0 and issued by the T.R. MINISTRY OF
CUSTOMS AND TRADE’s Directorate General of Consumer Protection And Market Surveillance, and
with the Service Place Competency Certificate issued by TSE.
The structure and operation of the boilers comply with the Regulations of European Union and the
conditions stipulated in the regulations of all countries in which the European Union Standard is
applicable.
ONGAS NOVA Series Floor Type Condensing Boilers are the registered brands of Önmetal Döküm
Sanayi ve Tic. Ltd. Şti. and they are manufactured in the own facilities of the company in Edirne,
Turkey.
EN 15502-1+A1
EN 15502-2-1+A1
2016/426/EU –Gas Appliances Regulation
2014/35/EU –Low Voltage Directive
2014/30/EU –Electromagnetic Compatibility Directive
RIMA ONGAS NOVA Floor Type Condensing Boilers comply with the EC Directives.
1.GENERAL INFORMATION

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1.3.1.Explanations of the Symbols
Warning Signs
Safety Warnings are indicated with a warning triangle.
Important information for the safety of persons are indicated with the symbol on the left
1.3.2.General Warnings and Recommendations
•ONGAS NOVA Series Floor Type Condensing Boilers with Aluminum Cast Fins are designed
to be used in heating installations with hot water and/or in hot water installations and
manufactured with the technology and materials suitable for this design.
•While placing the boiler in the boiler room, the point where the boiler shall be installed and operated
shall have a concrete base that is stable and strong enough to bear the weight of the boiler.
•ONGAS NOVA Series Floor Type Condensing Boilers are delivered without circulation pumps
•Example installation diagrams are provided at the end of the manual. Installations for the boilers shall
be made according to these diagrams. Only the general installation principle of the system and the
sensors and relay points used for automation are provided in these diagrams. Installation elements such as
sediment traps, check valves, expansion tanks are not indicated. These equipment shall be selected and
installed separately.
•Sufficient space shall be left around the boiler while placing it in the boiler room for maintenance and
service operations.
•In the installation, a sediment trap shall be placed in the secondary circuit after the balance vessel and
an air separator shall be placed in the primary circuit after the balance tank.
•In the summer months when the boiler is not operated, the circulation pumps shall be operated for five
minutes 1-2 times a month to prevent jamming and to extend their service life. (Lime water causes
malfunctions if the boiler is not used for a long period).
•Capacity selection of the boiler shall be performed according to the installation projects prepared in
accordance with the standards. Otherwise it may not be possible to obtain the desired efficiency from the
boiler.
•ONGAS NOVA Floor Type Condensing Boilers are intended for heating systems only as standard.
Another boiler or a heat exchanger is also required to heat the domestic water. To provide efficient hot
water, the capacities of the boiler and the external boiler or heat exchanger shall be compatible.
•If the boiler has stopped automatically due to over-temperature, do not add cold water to the boiler to
restart the boiler. Wait until the boiler has cooled down and then try restarting, if it does not, inform the
authorised service.
•Electrical supply of the boiler is provided from the mains. Mains supplied electrical equipment is
obligated to connect earth. For this reason, power and lighting installation of the boiler room, electrical
connections of the boiler, control panels and boiler room grounding line shall be made by experts of their
field in accordance with the relevant standards
•It is suitable for Vented (B type) applications, designed for central heating.

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•All electrical and electronic controls are supported on the control panel located at the top of the boiler.
•The cleaning of the installation is of utmost importance for the transformation projects from
boilers with solid fuel or liquid fuel to boilers with gas fuel. The installation shall be washed, any
leaks shall be detected and repaired and a plate type heat exchanger shall be used.
•Boilers shall be installed in a place with no risk of frost. When the boiler is not operated, the water
remaining in the radiators shall be drained to prevent freezing.
•Boilers shall not be installed in a location that contains moisture, vapour or dust. Otherwise the boiler
shall not operate correctly and efficiently.
•The floor of the installation location of the boiler shall be stable, firm and wide, and it shall be
positioned high above the ground in order not to be affected by floods.
•The supply of fresh air shall be free of halogen hydrocarbons (sprays, paints and some chemicals),
otherwise these shall cause corrosion and erosion of the boiler and flue.
•Flammable materials shall not be placed on or near the boiler.
•Fresh air intake shall comply with the instructions of the local gas supplier and the instructions for gas
connection, otherwise there is a risk of poisoning.
•Condensate and flue connections shall be made in accordance with the rules and standards.
•Before starting to work on the boiler, always disconnect the main power line and turn off the main gas
valve.
•If you smell gas, turn off the main gas valve and call the emergency number for gas leaks in your
neighbourhood. If you smell flue gas, turn off the boiler and call the authorized service immediately
Combustibility (flammability) levels of construction materials and products
A- Non-combustible
Granite, sandstone, concrete, brick, ceramic, fireproof plasters
B- Very Difficult to Burn
acumin, isumin, heraclith, lignose, fiberglass components
C1- Difficult to Burn
Products made of beech or oak, hobrex plates, werzalit, umuakart
C2- Medium
Combustibility
Wet wood, black pine, cork and tree crumbs, rubber sole
C3- Easy to Burn
Asphalt Components, Fiber components, cellulose materials, polyurethane, polystyrene, PVC, polyethylene
Keep the boilers at least 200 mm away from flammable materials with B, C1, C2 burning classes as
specified in the table during their installation and operation.
•For materials that burn rapidly and by themselves after any spark, that are easily ignitable with a
burning class of C3, increase the safety distance to at least 400 mm.
The boiler is set for natural gas H/E (G20, 20 mbar) in the factory.
•The boiler shall only be installed in a room that meets proper ventilation requirements and that is
separated from living areas. Otherwise there is a risk of suffocation or poisoning.

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•To prevent incorrect circulation, control valves shall be used in conjunction with the circulation pump
system. A strainer (filter) shall be used in the return water lines of the new/old buildings and new/old
installation systems.
•A relief valve (max. 6 bar) and a manometer shall be used in the installation system. No other valves
shall be present between the boiler and the relief valve, otherwise pipes or other parts may explode in the
over-pressurised boiler (risk of evaporation).
•Supply of cold water to the boiler shall be performed when the boiler is cold.
•It is possible that oxygen may pass through the floor heating pipes into the water. Oxygen in the water
causes corrosion of the boiler. Therefore, if the boiler is to be used in a floor heating system, a heat
exchanger shall be added to the circuit and mixing of the boiler water and installation water shall be
prevented.
•The external air sensor is delivered with the device as standard to ensure more economical operation of
the boilers. This sensor allows fuel savings about 35%. Moreover, optional controller units may be
installed to allow scheduling of the boiler. Similar applications are also implemented in cascade systems.
The boiler shall only be installed in a room that meets proper ventilation requirements and that is
separated from living areas. Otherwise there is a risk of suffocation or poisoning. Read the technical
instructions before installation and operation.
1.3.2.1.Points to be Considered During Handling and Transport
Products are shipped on pallets as protected by styrofoam and film.
The products are fastened to the pallets with retaining screws.
In addition, the products are protected with a wooden case against external impacts.
Appropriate markings are provided on the case. During storage, it may be stored at proper ambient
humidity and temperature without opening the package.
1.3.3.Power Saving
The proper use of energy resources in our world is a real problem of modern societies.
While we are generating energy for our future, we use natural resources that shall be exhausted in the
near future unless we encourage more rational and efficient use of these resources.
Condensation technology is a big step towards the rational use of energy as it provides energy savings of
up to 35% and lower emission values (80% for CO and 90% for NOx) compared to conventional heating
systems.
Moreover, the annual CO2emission values of high efficiency condensing boilers are 20% less in average
than the boilers with standard efficiency.
In the countries that have advanced in technology, all of the new boiler installations are selected as
condensing boilers and the governments have started to encourage persons to choose this technology.
The device offers intuitive and advanced diagnostic systems that allows detection of faults by the user.

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1.3.4.Cascade Configuration
The use of floor type condensing boilers in central systems is increasing every day. Condensing boilers
designed for this purpose provide high capacities with low space requirement. An advantageous and
economical heating is ensured by reaching a capacity of 1650 kW in one boiler and a max. capacity of
26400 kW with a cascade system. It allows easy installation and easy operation with its compact design
which reduces the space requirement. Provides ease of installation in confined spaces thanks to its easily
accessible internal structure. ONGAS NOVA series provide excellent compatibility when they are
installed to replace old systems that have expired their service life. Condensation technology with
advanced control systems reduces your fuel costs by 30%- 40% by providing fuel savings from the first
day of operation. Allows cascade operation even in areas with a very limited installation space thanks to
its compact design and light weight.
1.3.5. Safety Instructions
The boiler is connected to 400V mains –50Hz.
An incorrect installation or any attempts to repair using incorrect electrical components
may pose a lethal risk.
Keep unauthorised personnel away from the boiler. Do not leave any objects on or near the
boiler.
Do not touch the hot water connections or the flue outlet during the operation of the boiler -
risk of burning.
Installation, repair, commissioning and maintenance operations shall only be carried out by
suitably qualified personnel. It complies with all relevant international/local standards and
certificates.
Before starting to work on the boiler, always disconnect the main power line and turn off the
main gas valve.
If you smell gas, turn off the main gas valve and call the emergency number for gas leaks in
your neighbourhood. If you smell flue gas, turn off the boiler and contact the authorised service
or the installer.
The boiler can not be operated with children less than 8 years old and mentally handicapped.
1.4. Responsibilities
Manufacturer’s Responsibilities: They shall manufacture and ship products in accordance with the
relevant directives
Responsibilities of the Contractor: Contracting company is responsible for the installation. The company
shall read this manual and follow the instructions provided in the manual before calling the authorised
service.

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1.4.1.Points to Consider Before Contacting the Authorized Service
First of all, we would like to thank you for choosing and using the “Rima Condensing Boiler”. Below is a
list of things to do before calling the Rima Authorised Service.
Protect your device against factors that may damage the packaging and the device (moisture,
water, impact, construction materials, etc. ) during the transport and subsequent assembly of the
device. The boilers shall be installed on a stable, firm ground. In case of a surface which is not
suitable for supporting of the boilers and the connection equipment, a suspension system with a
metal profile shall be used.
The installation water shall be conditioned by considering whether the system is a new heating
system to be installed or an heating system to be transformed. If the installation to be used for the
system is old or if it shall be transformed, the water in the installation shall be completely drained
and water shall be conditioned (cleaning shall be performed and a preservative shall be used).
We recommend the use of plate heat exchangers in such systems particularly. The presence of
blockages in the heating installation such as dirt, sediment, burrs, iron dust, lime, etc., adversely
affect the operation of the boiler. This may cause inefficient operation, overheating, noisy
operation, and damage to the heat exchanger of the boiler over time. Installation water shall be
conditioned and preserved in new installations.
o7<pH value used in the installation> 8.5
oFor the hardness of the water, the hardness value appropriate to the capacity shall be
determined in accordance with the table given below.
Total capacity
(kW)
Total Hardness (Fransız sertliği - °F)
Water volume
of
system (below
20 l/kW)
Water volume
of
system (betwee
n 20-50 l/kW)
Water volume
of
system (above
50 l/kW)
>200<600
<15
<0.2
<0.2
>600
<0.2
<0.2
<0.2
Water containing sediment or of unknown content such as well water and transport water shall
not be used. Use of any chemicals by adding them to the installation without the approval of the
manufacturer shall render the products void of warranty. As Rima Heating Systems, we
recommend use of water treatment products with Sentinel X100, X300 or X400 brands. Use
neutral, non-acidic and non-alkaline cleaners. Any damage to the product or installation that may
occur without taking the approval of the manufacturer in applications performed using the
products of different companies is out of warranty cover. It is the user’s responsibility to ensure
that the water to be circulated in the installation is clean.
Sub-boiler pumps, hydraulic sets, balance vessels, sediment traps, air separators to be used in the
installation shall be selected as suitable to the boiler and heating installation.

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Selection of the Balance Tank
Selection of the Expansion Vessel
Expansion vessel and its capacity shall be chosen only by qualified person (heating engineer)
according to the valid European standards. Below is an example of capacity (in liters) of vessel
for installations with panel radiator. For different height of buildings and different type of
heating systems, get contact with our technical team;
BOILER MODEL
CAPACITY
(kW)
Capacity of Vessel (liters)
10 meters of building
height
20 meters of building
height
30 meters of building
height
30-50 °C
60-80 °C
30-50 °C
60-80 °C
30-50 °C
60-80 °C
ONGAS NOVA 09
1000
200
400
260
520
360
730
ONGAS NOVA 10
1110
220
450
285
575
400
800
ONGAS NOVA 11
1205
240
490
310
625
435
890
ONGAS NOVA 12
1305
260
530
340
680
470
950
ONGAS NOVA 13
1400
280
565
360
730
500
1020
ONGAS NOVA 14
1520
305
615
390
790
550
1100
ONGAS NOVA 15
1650
330
670
425
860
600
1200
*Calculated according to 6 bars of opening of relief valve

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A separate flue outlet shall made for each boiler and each flue shall be connected to the main flue
from the sides. In case of connection to existing flues, make sure that they are clean, otherwise
the flues may prevent the passing of gases during operation.
Pressure Loss
BOILER MODEL
CAPACITY
ΔT = 10 °C
ΔT = 15 °C
ΔT = 20 °C
Water rate
(m³/h)
Pressure
loss
(mbar)
Water rate
(m³/h)
Pressure
loss
(mbar)
Water rate
(m³/h)
Pressure
loss
(mbar)
ONGAS NOVA 09
1000
86,0
280
57,3
200
43,0
100
ONGAS NOVA 10
1110
95,5
300
63,6
215
47,7
110
ONGAS NOVA 11
1205
103,6
330
69,1
230
51,8
120
ONGAS NOVA 12
1305
112,2
350
74,8
250
56,1
130
ONGAS NOVA 13
1400
120,4
370
80,3
265
60,2
140
ONGAS NOVA 14
1520
130,7
400
87,1
280
65,4
150
ONGAS NOVA 15
1650
141,9
420
94,6
300
71,0
160
Pump Selection : ΔT: 15
Model
Flow (m³/h)
ONGAS NOVA 09
57,3
ONGAS NOVA 10
63,6
ONGAS NOVA 11
69,1
ONGAS NOVA 12
74,8
ONGAS NOVA 13
80,3
ONGAS NOVA 14
87,1
ONGAS NOVA 15
94,6

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All electrical installations are the responsibility of the contractor. Connect your device to a 400 V
three phase and grounded power supply. Connections to the boiler shall be performed by the
authorised service. All connections to be made on the electrical panel through the boiler shall be
performed by Rima authorised service centres. If it is desired that the electrical installation is also
performed by the authorised service, labor costs shall be subject to a charge to be determined by
the service.
A certificate of conformity shall be taken from the gas companies before calling the service.
Ongas NOVA may only be operated with natural gas. Gas pressure in the gas line shall be set to
21 mbar with a regulator and a filter shall be present in the gas line.
Any leaks in the installation shall be repaired. Faults and damages that may occur due to power-
water-gas installations and/or installation equipment, leaks in the installations, installation
connections, and flue connections are out of the warranty cover. Automatic supply shall not be
applied.
The systems where our gas fuelled condensing boilers shall be installed are closed-circuit
systems. In closed-circuit systems, a closed expansion tank shall be used. An open expansion
tank shall not be used.
The application pressure of the system is between 0.8 bar and 6 bar. Since the closed-circuit
operating pressure allowed by the boiler is maximum 6 bar, a balance vessel shall be used for
pressures up to 6 bar, and a plate heat exchanger shall be used instead of the balance vessel for
pressures over 6 bar in cascade systems. A relief valve with adjustable pressure is not allowed.
When a plate heat exchanger is used, expansion tanks with suitable capacity shall be used on
both sides of the system
The boiler drainage shall be directed so that flowing of the condensation water is allowed. The
materials used for the installation the condensate drainage shall be made of plastic. Blocking the
condensate drain shall cause the boiler to shut down automatically or leak from the siphon. If you
suspect a frost condition, it shall be useful to pour hot water into the exposed part of the drain.
Always ensure that the drain is open to ensure that the boiler functions properly.
It is essential to use a manometer that indicates the operating pressure in the system.
Procurement of the zone control module and its installation to the boiler control panel is the
responsibility of the user.
The heating system has a protection function for conditions with a risk of frost. To enable this
function, the power to the boiler room shall be switched on
Faults and damages that occur due to the environmental conditions and incorrect storage by the
consumer are not covered by the warranty.
IMPORTANT: If deficiencies in the system are detected by the service personnel during the
commissioning, our service shall not commission the system; and the service fee incurred when the
service is called again for commissioning following the provision of the necessary conditions in the
system shall be borne by the user.

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Responsibilities of the User: Reading the manuals, maintaining and preserving the product in accordance
with the warranty conditions, and preventing the intervention of persons other than the authorised
service.
1.5. Explanation of the Symbols on the Packaging
Fragile Top side Recycle Protect Against Water
All gas devices shall be installed by qualified technicians. Any error in the installation of these devices
may result in criminal actions as required. RIMA ONGAS NOVA condensing boilers shall not be
installed or modified in any way other than those specified in this manual. Always keep the boiler in its
safety packaging during its transport before installation. Additional protection measures may when
required by the installation site. Please follow the rules and instructions for the authorisation of the
installation.
Packaging Label:
1.5.1. Parts Delivered as Standard with the Product
Siphon Assembly
Operating Manual
Warranty Certificate
Important: Operating instructions to ensure that the boiler may be used without any problem for many
years are included in the operating manual.

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Gas Type Label.
Type
Product
category
Supply
pressures
[mbar]
Gas used
Country of destination
B23
I2H
20
G20
AT, BG, CH, CY, CZ, DK, EE, ES, FI,
GB, GR, HR, IE, IT, LT, LV, NO, PT,
RO, SE, SI, SK, TR
I2E
20
G20
DE, NL, PL, RO
I2H
25
G20
HU
The boiler is set for natural gas H/E (G20, 20 mbar) in the factory.
1.6.Data Label

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2. GENERAL SPECIFICATIONS OF THE CONDENSING BOILER
2.1.Components of the ONGAS NOVA Floor Type Condensing Boiler

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2.2. Technical Specifications of the Floor Type Condensing Boiler

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3.1.Packaging and Handling
ONGAS NOVA Series condensing boilers are dispatched as covered with sheets coated with powder-
static paint, wrapped with stretch film, on pallets and inside crates. Appropriate markings are provided on
the case. During storage, it may be stored at proper ambient humidity and temperature without opening
the package.
ONGAS NOVA Series condensing boilers shall be placed as follows;
•Place the boiler to the boiler room taking the minimum recommended distances into account.
•Remove the gelatine, tapes, pallets and any other packaging.
•All gas appliances shall be installed by authorised persons as required by law. Any error in the
installation of these devices may cause loss of life and property.

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•Boilers shall be installed in a place with no risk of frost. When the boiler is not operated, the
water remaining in the radiators shall be drained to prevent freezing.
•Boilers shall not be installed in a location that contains moisture, vapour or dust. Otherwise the
boiler shall not operate correctly and efficiently.
•The floor of the installation location of the boiler shall be stable, firm and wide, and it shall be
positioned high above the ground in order not to be affected by floods.
•The supply of fresh air shall be free of halogen hydrocarbons (sprays, paints and some
chemicals), otherwise these shall cause corrosion and erosion of the boiler and flue.
•Fresh air intake shall comply with the instructions of the local gas supplier and the instructions
for gas connection, otherwise there is a risk of poisoning.
3.1.1. Minimum Recommended Distances

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3.2. Dimensions of the Condensing Boiler

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*Dimensions in “mm”
3.3. Dismantling :
3.4.Gas Connections
Gas connections shall be performed by authorized personnel or by installation companies with
certification for gas installations.
Sediments and collected particles in old installations, radiators or gas pipes shall be removed
before installation.
The gas connections shall be inspected for leakage before commissioning.
The risk of poisoning or explosion due to the operation and installation of unsuitable gas
installations may result from non-compliance to rules.
A flameproof gas valve shall be used, otherwise there is a risk of explosion in case of fire.