Ferroli Rendimax 23 CE Manuale utente

RENDIMAX CERENDIMAX CE

RENDIMAX CE

CAST IRON GAS-FIRED BOILERCAST IRON GAS-FIRED BOILER

CAST IRON GAS-FIRED BOILER

for central heatingfor central heating

for central heating

Installation and operating instructionsInstallation and operating instructions

Installation and operating instructions

S.p.A.

Contents

1. Description

2. Dimensions and technical specifications

3. Installation

4. Adjustment

5. Gas conversion

6. Maintenance and cleaning

7. Troubleshooting

S.p.A.

Fig. 1

Version "P.V."Version "BASE"

850

284

590

660

510

590

660

1. DESCRIPTION

1.01 Introduction

RENDIMAX CE boilers are heat generators for central heating and domestic hot water production.

The standard version is designed to work with natural gas.

To use the boiler with L.P.G., on-site conversion must be carried out following the instructions given

below. This conversion must be done by our local Customer Technical Service Center.

2. Dimensions and technical specifications

2.01 Dimensions

KEY

1C.H. flow inlet

2C.H. flow outlet

31/2" gas inlet

4Safety valve (only PV vers)

5Expansion vessel (only PV vers)

S.p.A.

112

Fig. 2

2.02 Components description

View with open door

KEY

1Boiler thermostat

2Boiler temperature / pressure gauge

3Safety valve

4Gas valve

5Circulation pump (only PV version)

6Boiler drain cock

7Pilot burner

8Piezo-Igniter

9Gas-Manifold

10 Boiler main switch

11 Filling cock

12 Cock

13 Flue thermostat

S.p.A.

Heat output Heat rate

Boiler Rated Adjiustable up to: Min.Rated

Rendimax 16 CE

Rendimax 23 CE

Rendimax 30 CE

Rendimax 36 CE

16,2

23,0

29,5

36,0

kcal/hr

14.000

19.800

25.400

31.000

11,0

16,0

20,0

24,0

kcal/hr

9.500

13.800

17.200

20.600

Section

nr.

12,7

18,4

23,0

27,6

kcal/hr

11.000

15.800

19.800

23.800

kcal/hr

15.500

22.000

28.200

34.400

18,0

25,5

32,8

40,0

Natural gas

Boiler

Rendimax 16 CE

Rendimax 23 CE

Rendimax 30 CE

Rendimax 36 CE

Nozzle

nr.

L.P.G.

Ø Main

burner

2,45

2,35

Ø Pilot

burner

0,35

Rated

gas

pressure

mbar

13,0

15,2

14,2

13,5

Ø Main

burner

1,55

1,50

Ø Pilot

burner

0,225

Rated

gas

pressure

mbar

Boiler weight

vers.

112

BASE

vers.

102

126

Connections

Boiler

Rendimax 16 CE

Rendimax 23 CE

Rendimax 30 CE

Rendimax 36 CE

400

500

600

100

110

130

150

515

525

635

615

625

Return

Flow

Gas

inlet

1/2"

3/4"

Max

working

pressure

bar

Boiler water

content

lt.

7,3

9,0

10,7

12,4

Expans.

vessel

vol.

lt.

Boiler

Rendimax 16 CE

Rendimax 23 CE

Rendimax 30 CE

Rendimax 36 CE

Rated

1,94

2,70

3,47

4,23

Min.

1,16

1,69

2,46

2,95

Gas flow rate at the

burner for L.P.G. kg/hr

Rated

1,50

2,08

2,68

3,27

Min.

0,90

1,31

1,63

1,96

Gas flow rate at the

burner for N.G. m /hr

Connection dimentions

*Only P.V. version*Only P.V. version

*Only P.V. version

3. INSTALLATION

Installation must be carried out by specialist companies only in accordance with all instructions and

current regulations.

You are advised to include gate valves between the boiler and the C.H. system so that the boiler can

be isolated from the system if necessary.

Notes: If the path followed by the C.H. flow outlet and return inlet pipes is such as to allow for the

formation of air pockets at certain points, you are recommended to fit an air valve at these points.

The diameter of the flue connection pipe must not be less than that of the coupling on the draft

diverter. From the draft diverter, it must have a vertical section of not less than one and a half meters.

When sizing and installing flues and the flue connecting pipe, current regulations must be respected.

If the fuel duct pass through flammable wall it has been well insulated.

2.03 Technical data (Max. working temperature 100°C)

S.p.A.

230V

50Hz

49 49

114

160

324

57968 1513

10 11 12 1614

160114 32 44

230V

50Hz

Fig. 3

Connection between boiler and chimney has to be sealed.

The rated flow rate of gas counter has to be sufficient for the whole connected appliance.

Be careful that the boilers connections are free of mechanical tensions.

Connect the gas using a rigid pipe and including a gas cock.

The boiler must be connected to a 230 Volt - 50 Hz single phase line (phase/neutral) by means of

terminal board of approved socket. A 5 A max. fuse should be included between the boiler and line.

It is important to ensure that the boiler is connected to an efficient earth system. The terminal board

for connecting the boiler to the room thermostat (if used) is inside the control panel (follow the

electrical wiring diagram fig. 3).

3.01 Electrical connection

The electrical connections has be carried out according the following electrical schema. If the boiler

is installed below the level of the C.H. system, you are recommended to install a sensor against the

water absence.

NB: The manufacturer declines all responsibility for damage to persons or things deriving from

poor earthling of the appliance.

DIAGRAM OF ELECTRICAL CONNECTION

Key

23 Thermocouple

32 C.H. pump (if fitted)

44 Gas valve coil

49 Safety thermostat

63 Boiler thermostat

BASIC ELECTRICAL WIRING DIAGRAM

92 Flue gas thermostat

98 Main switch

114 Water pressure switch (not fitted)

160 Auxiliary contact

S.p.A.

Fig. 4

3.02 Checking and controlling the evacuation of combustion products (total security)

The boiler is fitted with a FLUE GAS THERMOSTAT . This thermostat prevents gas from reaching the

burner if the flue is not drawing properly, providing greater security and control over the discharge of

combustion products.

If the FLUE GAS THERMOSTAT is activated, unscrew the protective cover on the control panel (Fig.

2 part. 13) and “reset” the thermostat manually. The boiler will then operate normally again.

If you replace the FLUE GAS THERMOSTAT, use original components only and make sure the electrical

connections are carried out correctly. NEVER EXCLUDE THE FLUE GAS THERMOSTAT FROM THE

ELECTRICAL CIRCUIT. If it keeps activating, contact qualified personnel only.

3.03 Pressure drop in relation to C.H. water flow rate (fig. 4)

Fig. 5a

3.04 Pump characteristics (only P.V. version)

1,2,3,=position of the built-in pump speed selector knob (fig. 5a)

S.p.A.

Fig. 5b

3.05 C.H. pump head characteristics (only P.V. version)(Fig. 5b)

NB - The diagram refers to maximum pump (Pos. 3) head/flow rate.

4. IGNITION AND SHUT-DOWN

4.01 Checks to carry out before igniting for the first time

When igniting the boiler for the first time, it is good practice to check:

- that the gate valves between the boiler and system are open;

- that the system is correctly filled and vented;

- that there are no gas or water leaks from the system or boiler;

- that the electrical connections are correct and the earth wire has been connected to an

efficient earth installation;

- that there are no inflammable liquids or materials near the boiler;

- that the flue is free from obstructions.

4.02 Igniting the boiler with ELETTROSIT gas valve(fig. 6)

Position the boiler thermostat on minimum.

Open the gas cock and vent the air present in the tube upstream from the gas valve by opening the

pressure point screw pos1.

Push down gas valve button 2 and hold it down.

Ignite the pilot burner by pressing the piezoelectric igniter 8 (fig.2) on the left side of the boiler.

S.p.A.

HONEYWELL V4600C GAS VALVEHONEYWELL V4600C GAS VALVE

HONEYWELL V4600C GAS VALVE

Keep gas valve button 2 pushed down for 20 seconds then let it up slowly checking that the pilot

burner remains lit. If it goes out, wait 30 seconds then repeat the ignition operation.

Set the button 3 as shown in the fig. 3

Turn on the electricity to the boiler.

Position the boiler thermostat 1 (fig. 2) on the required temperature (not lower than 45°C). The main

burner switch-on and the boiler start working controlled by regulation thermostat of room thermostat

(if connected).

ELETTROSIT GAS VALVE

fig. 6

Key

1Downstream pressure test point

2Ignition/shut down button

3Key for ignition

4Shut down button

5Upstream pressure test point

6Pilot adjustment screw

7Main burner adjustment screw

8Slow opening adjustment screw

4.03 Igniting the boiler with HONEYWELL V4600C gas valve(fig 7a)

Position the boiler thermostat 1 (fig. 2) on minimum. Open the gas cock and vent the air present in

the tube upstream from the gas valve by opening the pressure point screw pos 3. Turn on the electricity

to the boiler. Ignite the pilot burner by

pressing the piezoelectric igniter 8 (fig.2) on

the left side of the boiler. Keep gas valve

button 1 pushed down for 20 seconds then

let it up slowly checking that the pilot burner

remains lit. If it goes out, wait 30 seconds

then repeat the ignition operation. Position

the boiler thermostat 1 (fig. 2) on the required

temperature (not lower than 45°C). The main

burner switch-on and the boiler start working

controlled by regulation thermostat of room

thermostat (if connected).

fig. 7a

Key

1Ignition/shut down button

2Pilot adjustment screw

3Downstream pressure test point

4Upstream pressure test point

7Main burner adjustment screw

S.p.A.

IgniteIgnite

Ignite

pilotpilot

pilot

burnerburner

burner

IgniteIgnite

Ignite

mainmain

main

burnerburner

burner

Shuth-downShuth-down

Shuth-down

completelycompletely

completely

the boilerthe boiler

the boiler

SIT NOVA 820 GAS VALVE

4.04 Igniting the boiler with SIT NOVA gas valve(fig 7b)

Position the boiler thermostat 1 (fig. 2) on minimum.

Open the gas cock and vent the air present in the tube upstream from the gas valve by opening the

pressure point screw pos4. (fig 7b)

Push and keep pushed the knob in the position “a”.

Ignite the pilot burner by pressing the piezoelectric igniter 8 (fig.2) on the left side of the boiler.

Keep gas valve button 1 pushed down for 20 seconds then let it up slowly checking that the pilot

burner remains lit. If it goes out, wait 30 seconds then repeat the ignition operation.

Turn the knob in the position “b”.

Turn on the electricity to the boiler.

Position the boiler thermostat 1 (fig. 2) on the required temperature (not lower than 45°C). The main

burner switch-on and the boiler start working controlled by regulation thermostat of room thermostat

(if connected).

fig. 7b

Key

1Command knob

2Main burner adjustment screw

3Pilot adjustment screw

4Inlet gas adjustment screw

5Upstream pressure test point

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