Rima ONGAS 300/W Series Instruction manual

ONGAS
300/W SERIES CONDENSING BOILER
·Cast Aluminum Wall Hung Condensing Boilers
REV.01
/2011-OONGAS 300/W
·For Natural Gas
0051 - 11

Index
Safety Instructions
3
Standards & Instructions & Symbols
4
Meaning of the Symbols on packaging
4
Data Plate & Packaging Plate
4
Operating Principle of ONGAS 300/W Series
5
Technical Specification Table
6
Operating Instructions
7
Functional Description of Smart Control Panel
7
Description and functions of the LCD display
8
Operating Modes
10
Description of the Boiler & Delivery Terms
18
Installation Instructions
19
Recommended Minimum Distances
19
Boiler Dimensions for ONGAS Series
20
Boiler De-montage
25
Plumbing Instructions
25
Heating (Radiator) Water
26
Condensate Discharge
26
Gas Connections
27
Electrical Connections
28
ONGAS 303/W Series Electrical Wiring Diagram
30
ONGAS 304/W - 305/W - 306/W - 307/W Series Electrical Wiring Diagram
31
Cascade Configurations
32
Gas rate adjustment instructions
32
Adjustment of the Gas Rate ( ONGAS 306/W & 307/W )
33
Adjustment of the Gas Rate ( ONGAS 303/W & 304/W & 305/W )
34
Chimney Connections
35
Chimney Installation for ONGAS 300/W Series
36
Example Hydraulic Schemes for ONGAS 300/W Series
37
Fault Finding
40
Description of the error codes
41
Cleaning and Maintenance
43
Commissioning Form
44

Safety instructions
Gas Valve (ONGAS 306/W/307/W) , High Voltage Risk
Hig
h voltage in the Ignition transformer , ignition
electrode , and heat exchanger.
Instructions must be followed
carefully to avoid personal injury or
serious damage to the unit or the
environment.
The following symbols are used in this
document to emphasize certain instructions.
This is in order to increase your personal
safety and to safeguard the technical reliability
of the boiler.
Indicates possible danger of electric
shock. Serious personal injury may
occur.
This boiler is connected to a 230v
mains supply. An improper
installation or
attempts to repair
electrical components or controls
may result in life threatening
situations.
Keep unauthorized personnel away
from the boiler. Do not place objects
on or against the boiler. Do not
touch hot water connections or the
flue outlet when the boiler is
operat
ing –burn hazard.
Installation, repair, commissioning,
maintenance and repair work must
only be carried out by suitably
qualified personnel.
Engineer in
accordance with all relevant national
/
local standards and certifications.
Always disconnect the mains supply
and close the main gas cock before
working on the boiler.
The boiler
must not be modified or non
-
RIMA
spare parts fitted without the
express written approval of RIMA.
If you smell gas, close the (main)
gas cock and contact the
emergency
situation
gas leak
telephone number for your
area.
If you smell flue gas fumes,
turn the boiler off and contact your
service company or installer.
Terminal box (ONGAS 300/W Series )High Voltage

Standards & Instructions & Symbols
When installing and operating the boilers it is necessary to keep a safe 200 mm distance from combustible
materials with combustibility degrees B,C1,C2 .
For easily flammable materials with combustibility degree C3 ,which burn quickly and by themselves also after
the ignition source removal the safe distance is doubled it means 400 mm.
Meaning of the Symbols on packaging
FRAGILE TOP SIDE RECYCLE PROTECT AGAINST WATER
All gas appliances must be installed by authorized technicians. Failure to install appliances correctly could lead
to prosecution. RIMA ONGAS
300/W condensing boiler must not be installed or mod
ified in any situations
except written in this manual. Always transport the boiler in the safety packaging , before installation. Additional
protection may be required if site conditions warrant it
–
overhead builders working, insulation etc. Please apply
the regulations and instructions about installation clearances.
Data Plate Packaging Label
Gas Type Plate
The boiler has been set at the
factory for natural gas H/E (G20,
20 mbar).

RIMA ONGAS300/W Series Condensing Boilers
are in compliance with the ; EC Directives
(2009/142/EC) Gas Appliances Directive
(2006/95/EC) Low Voltage Directive
(2004/108/EC) Electromagnetic Compatibility Directive
(92/42/EEC) Efficiency Directive
The boiler may only be installed in a room which
complies w
ith the appropriate ventilation requirements
and which is separated from living rooms.
If not , there is suffocate and poisoning risk .
Read the technical instructions before installing and
lighting the boiler.
ONGAS 300/W Series Wall Hung
Condensing Boilers for Natural Gas
Operating Principle of ONGAS 300/W Series

Operating Instructions