Flue Exhaust To Flue/Chimney; Ducting Of Flues Or Technical Slots; Flues, Chimneys And Chimney Caps; Gas System Start-Up - Immergas CAESAR 14 3 E Instruction Booklet And Warning

1.8 FLUE EXHAUST TO FLUE/CHIMNEY.

Flue exhaust does not necessarily have to be
connected to a branched type traditional flue.
The discharge of flue gases, just for the water
heaters installed in configuration C, can be
connected to a particular LAS type collective flue.
For B configurations, discharge is only allowed
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into individual flue or directly into the outside
atmosphere by the relevant terminal. Multiple
and combined flues must be specially designed
according to the calculation method and
requirements of the standards, by professionally
qualified technical staff. Chimney or flue sections
for connection of the exhaust pipe must comply
with requisites of technical standards in force.
1.9 DUCTING OF FLUES OR
TECHNICAL SLOTS.
With a specific "ducting system" it is possible to
reuse existing flues, chimneys and existing or
new technical slots to discharge the water heater
flue gases. Ducting requires the use of ducts
declared to be suitable for the purpose by the
manufacturer. Follow the installation and user
instructions provided by the manufacturer and
the requirements of standards.
1.10 FLUES, CHIMNEYS AND CHIMNEY
CAPS.
The flues, chimneys and chimney caps for the
evacuation of combustion products must be in
compliance with applicable standards.
Positioning the exhaust terminals. The exhaust
terminals must:
- be installed on external perimeter walls of the
building;
- be positioned according to the minimum
distances specified in current technical
standards.
Combustion products exhaust of natural or
fan assisted appliances in open-top closed
environments. In spaces closed on all sides
with open tops (ventilation pits, courtyards etc.),
direct flue gas exhaust is allowed for natural or
forced draught gas appliances with a heating
power range from 4 to 35 kW, provided the
conditions as per the current technical standards
are respected.

1.11 GAS SYSTEM START-UP.

To start up the system, make reference to the
Standard: This divides the systems and therefore
the start-up operations into three categories: new
systems, modified systems, re-activated systems.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked flames;
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to specifications.
1.12 WATER HEATER START UP
(IGNITION).
For issue of the Declaration of Conformity
provided for by Italian Law, the following must
be performed for water heater start-up:
- check that the internal system is properly sealed
according to specifications;
- ensure that the type of gas used corresponds to
water heater settings;
- switch the water heater on and ensure correct
ignition;
- make sure that the gas flow rate and relevant
pressure values comply with those given in the
manual (par. 3.13);
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the main switch located
upstream from the water heater;
- check that the concentric intake-exhaust
terminal (if fitted) is not blocked.
The water heater must not be started up even if
only one of the checks should be negative.
N.B.: the water heater preliminary check must
be carried out by a qualified technician. The
conventional water heater warranty is valid as of
the date of testing.
The test certificate and warranty is issued to the
user.
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1.13 KITS AVAILABLE ON REQUEST.

• Polyphosphate dispenser kit. The polyphosphate
dispenser reduces the formation of lime-scale
and preserves the original heat exchange and
domestic hot water production conditions. The
water heater is prepared for application of the
polyphosphate dispenser kit.
• Covering kit. For outdoor installations, in
partially protected areas and with direct air
intake, the top protection cover must be fitted
for a correct functioning of the water heater
and to protect it from storms (Fig. 1-8). For
indoor installations, type B configuration, a
suitable top protection cover coupled with the
flue exhaust kit must be fitted.
• Anti freeze kit with resistance (on request). If
the water heater is installed in a place where the
temperature falls below 0°C and the appliance
can freeze. To prevent freezing of the domestic
hot water system, an anti freeze kit with an
electrical resistance can be fitted from the
relative cable and from a control thermostat.
• Bracket kit for Omni Container. If necessary,
the water heater can be installed inside the
Omni Container. For assembly, use the relevant
support bracket contained in the kit.
The above-mentioned kits are supplied complete
with instructions for assembly and use.