Baxi CHAPPEE NXR4 Bedienungsanleitung

1 Réf. : CI - 389 - C

MANUAL

Réf. : CI - 389 - C - 2 EXPORT - AN 10/03

NXR4

260 / 800 kW

HIGH-EFFICIENCY, PRESSURIZED,

CAST IRON, OIL OR GAS BOILERS

USER

1 . Commissioning

1 - Filling

2 - Preliminary checks

2 . Operation

1 - Principle

2 - Heating boiler alone

"STANDARD"

3 - Heating boiler alone with an

"ECOCONTROL" panel

3 . Start-up

4 . Shutdown

5 . Safety recommendations

6 . Maintenance

7 . Possible servicing needs

8 . Recommandations

2Réf. : CI - 389 - C

1. Commissioning

BAXI does not accept any liability for damage caused

by work that does not comply with these instructions

and/or which has not been carried out by a qualified

installer.

1 - 1 Filling

- Water quality for the heating system

Avoid using hard water, which may scale the boiler. If TH

or total hardness is above the French 25°, the boiler

should be filled with softened water.

- Filling the boiler and heating system

While filling, which must be done slowly, ensure that the

stop valves are open and that the mixing valve can be 1/

2 open.

The automatic drain cock plug, normally fitted on the

boiler outlet, must remain untightened in order to achieve

continuous draining during filling-up. Drain all high points

of heating system and close the various draining screws

one after the other as soon as water reaches their level.

After filling the boiler for the first time, flush completely

(using the sludge flushing valve) in order to get rid of

foreign bodies that may come into the components or the

pipes during assembly.

- Water topping up

Subsequent boiler topping-up should be practically non-

existent and in all cases controlled and registered by a

water flow meter. Frequent topping-up is the a symptom

of a leakage which should be repaired as soon as possi-

ble.

1 - 2 Preliminary checks

When commissioning the boiler for the first time in the

season, or after a prolonged shutdown period :

- ensure that filling was done properly and check overall

tightness. If necessary, put more water and drain all high

points until water flows slightly.

- check the connection of the flue stack and the proper

working condition of the draught regulator if any

- check that the high and low vents are not obstructed

- ensure that the doors and the flue access plates are

closed and tight

If necessary, act upon the tightening points.

- ensure that the burner is properly locked

- check if it is properly supplied in fuel, that supply and

return valves are open

- for operation with gaseous fuel types, check that the

safety conditions are fulfilled.

2. Operation

2 - 1 Principle

Boiler control is done through the thermostats (10) or through

built-in weather-compensated control (optional).

Operation safety is ensured by the limit thermostat (13) with

manual reset.

For boilers fitted with a W.C. control, the boiler water

temperature is adjusted by action on the burner and (or) on

the mixing valve, depending on outside temperature.

3 Réf. : CI - 389 - C

2 - 2 "S" type

Manual control through boiler thermostats (10)

356

41121310b10a

•Lit when the boiler is ON

• On O: Burner off

• On I: Burner on-off under control of boiler thermostats (10)

• On ∆∆

∆∆

∆: Momentary burner and limit thermostat (13) operation control

• 6.3 AT

• Displays flue gas temperature at boiler outlet

• Displays boiler water temperature

• Controls boiler-water temperature (setting range : 30 to 90° C). Temperature

increases according to index figures

• Set the 2nd stage thermostat (on the right) to the required boiler temperature

• Set the 1st stage thermostat (on the left) at about 5 to 10íC above this setting

(about one figure on the index)

Example : - 2 nd stage thermostat on 75° C

- 1 st stage thermostat between 80 and 85° C

• Lit when thermostat (13) is activated after abnormal increase in boiler water

temperature. The burner is stopped.

• Factory set at 110° C (manual reset)

Power ON light

Swicht Burner ON/Off

"Test" function

Safety fuse

Flue gas thermometer (option)

Boiler thermometer

a - Boiler thermostat, 1 st stage

b - Boiler thermostat, 2 nd stage

Boiler safety warning light

Boiler limit thermostat

2 - 3 Heating boiler alone with an “ECOCONTROL” panel

2 - 3 - 1 Refer to the instructions delivered with the latter

4Réf. : CI - 389 - C

3. Start-up

Oncetheboilerthermostatshavebeensetonselected

flow temperatures :

Activate system main switch, mandatory as per regulations

in force, in order to control burner through the switch located

on the control panel. If a disconnecting device is incorporated

to the burner, check that it is engaged.

Once the burner has been started, it will automatically obey

the impulses sent by the control devices.

4. Shutdown

Burner

To stop the burner, put main switch and control panel switch

off (3)

In case of prolonged stoppage, shut the supply and combus-

tion valves.

At the end of the heating season, clean thoroughly (see

instructions on burner notice)

Boiler

At the end of the heating season, clean the boiler thoroughly

(see maintenance).

In case of prolonged stoppage, shut the boiler doors,

disconnect the flue stack and close the flue hood to avoid any

air circulation inside.

The system must not be drained, except if the boiler may not

be started-up at the beginning of the cold season.

Antifreeze

An efficient protection against freezing can be obtained by

incorporating a certain amount of antifreeze in the heating

system.

Central heating antifreeze is of a special grade. Your installer

shall give you all useful details on that matter.

It is then necessary to ensure that no communication is

possible between the heating system and external water

supply.

In case of power failure, the burner stops, as if the main

switch were switched off, and starts automatically as soon

as power supply is restored.

Note : After starting up a system for the first time, it is

recommended to clean the pump filter in the case of oil firing,

or the line filter in the case of gas firing.

After a few hours of operation, check the tightness of the

doors. If necessary, tighten their fastening nuts.

5 Réf. : CI - 389 - C

Chimney cleaning

Regulations require the chimney to be cleaned twice a year.

Lack of water in the system

Do not add water in a boiler at high temperature. If it is

imperative to do so, only let a small stream of water flow in.

5. Safety recommendations

Lack of water in the boiler

Stop the burner, let the boiler cool down completely. Adding

water when boiler is hot may cause irremediable boiler

damage.

Opening the doors

Make sure that the burner is not operating and the boiler switched

off to open the furnace door and sweeper plugs.

6. Maintenance

Boiler

Check water pressure on pressure gauge and, if necessary,

restore normal pressure. Only perform this operation when

the system is cold. If frequent topping-up is necessary, there

is a leak in this case, notify the installer. Never draw water

from the heating system. In order to avoid slow but steady

sooting, harmful to proper boiler operation, it is recommended

to clean it regularly twice a year at least.

This is always done with the boiler cycled off and the power

supply cut out.

Proceed as follows :

• put ON burner switch located on the control panel as well

as the main heating system switch

• remove casing front panels

• open combustion chamber burner support door and

remove smoke hood plugs

• clean the walls of each flueway with the brush provided

with the boiler as well as the combustion chamber walls.

• flush soot and combustion deposits, if possible using a

vacuum cleaner

• Clean the inside of the smoke hood

• the lagging material of the doors can be brushed with a

soft brush. Do not use a metal brush. Be careful not to

damage the seal.

• Once cleaning is finished, set flue access plates back up,

close the burner support door, checking their proper

tightness.

• set casing front panels back up.

Sludge

This sludge, due to oxidation in the system, travels inside the

pipework and makes up deposits in the boilers. We

recommend to rinse the boiler efficiently and thoroughly

and check the flushed water quality.

Burner

The burner must be submitted to regular maintenance. See

special instructions, provided with the burner. If necessary,

contact the retailer or manufacturer of the burner.

6Réf. : CI - 389 - C

7. Possible servicing needs

If the burner does not start or stops systematically

after having started, make sure that the problem needs to be

handled by external servicing.

Check :

1) if there is enough oil in the tank or if gas supply operates

properly

2) if the switch is actually activated and if there is no power

failure

3) if the fuses are in good condition

Advice to save energy

• Adjust the boiler output to actual output of installed

radiators.

• Clean the boiler at least twice during the heating season.

• Check the burner settings at least twice during the heating

season.

8. Recommendations

• Set the boiler thermostat according to outside temperature

in order to avoid overheating the radiators. We recommend

to install a control system (to be integrated in the control

panel) which acts upon the burner and limits operating

time of the latter.)

4) if the control box is not switched off

5) if the control system (photocell or ionisation) is clean

6) if it is not a normal stoppage due to regulation by the

boiler thermostats

7) if the fuel supply valves are properly opened

8) if the boiler safety has not been triggered off.

7 Réf. : CI - 389 - C

NOTES

8Réf. : CI - 389 - C

PRINTED AT SOISSONS FACTORY - FRANCE

157, AVENUE CHARLES FLOQUET

93158 LE BLANC MESNIL CEDEX. FRANCE.

TELEPHONE: 01 45 91 56 00 - FAX: 01 45 91 59 50

www.chappee.com

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