Ravenheat CS 80, CS 90, CS 90 T, CS 80 T Instructions For Use Installation And Servicing

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Technical and illustrative data are not binding and can be modiﬁ ed without prior notice. The descriptions and illustrations in the present booklet are for guidance purposes only.

RAVENHEAT MANUFACTURING LTD CHARTISTS WAY, MORLEY, LEEDS, U.K. LS27 9ET TEL.: 0113 252 7007 - FAX: 0113 238 0229

Website: www.ravenheat.co.uk - E-mail: sales@ravenheat.co.uk

Instructions for Use

Installation and Servicing

To be left with the user

CS 80 (T)

Natural Gas (G20) II

2H3P

G. C. No. 4758146

LPG (G31) II

2H3P

G.C. No. 4758147

CS 90 (T)

Natural Gas (G20) II

2H3P

G. C. No. 4758148

LPG (G31) II

2H3P

G.C. No. 4758149

1312

HIGH EFFICIENCY

CONDENSING

COMBINATION BOILER

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It is the law that all gas appliances are installed by a competent person, in accordance with the gas safety installation and to the current Gas Safety (Installation and Use) Regulations B.S.5440:2-(2000).

All registered installers carry a Gas Safe Register ID card and have a registration number. Both should be recorded in your boiler Log book. You can check your installer’s registration at www.gassaferegister.co.uk.

ESCAPE OF GAS Should a gas leak be suspected, contact your gas supplier without delay.

GAS EMERGENCY NUMBER: 0800111999

Do NOT search for gas leaks with a naked ﬂ ame.

WARNING: This appliance must be earthed.

1.1 INTRODUCTION

Please carefully read the information given in this booklet to help you gain maximum control from your appliance with minimum trouble and cost.

Your Ravenheat Condensing Low Nox combination boiler has been designed to supply your Central Heating and Domestic Hot Water directly from one unit. When Central Heating is operating, the circulation will be interrupted when Domestic Hot Water is being drawn off (domestic hot water has priority). This will normally not affect the level of Heating.

PLEASE NOTE:

Due to the high efﬁ ciency of this appliance and resulting

low ﬂ ue gas exhaust temperature a white plume of condensation vapour (cool steam) will be emitted from the ﬂ ue outlet terminal, this is quite normal. It will be particularly evident during periods of low outdoor temperature or when the boiler is working at its optimum performance (Plume Management kits are available on request).

IMPORTANT: In the unlikely event of the exhaust ﬂ ue gases exceeding

the overheat temperature setting, the boiler operation will be stopped to prevent damage to the appliance.

1.2 CLEARANCES AROUND THE APPLIANCE

Side clearance:

The position of the appliance must provide a minimum clearance of only 5 mm as the side panels do not require removing for servicing.

However, if the option is preferred to remove the panels then a minimum clearance of 55 mm is required.

Top clearance:

The top clearance should be a minimum of 125 mm.

Bottom clearance:

A minimum bottom clearance of 80 mm is

required between the appliance

required between the appliance and any surface, though 150 mm is preferred whenever possible.

Front clearance: A minimum of 450 mm is required in front of the appliance for access during servicing, the front clearance can be reduced when installed in a cupboard to 25 mm from the access door.

USER CONTROLS

This appliance is designed to operate with the minimum

of ease for the user. All the controls are found on the

control panel on the front of the boiler.

1.3 OPERATING SAFETY CHECKS TO PROTECT

YOUR APPLIANCE (CHECKING THE SYSTEM

PRESSURE)

Before lighting the appliance check that the Central

Heating system pressure is not less than 1 bar. If it

is below this it will be ecessary to re-pressurise the

system, between 1 and 1.5 bar to allow the boiler to

operate. To view the system pressure press the P button

once, this will display the current pressure

(if the

pressure is on nil or too low, then error code 08E is

displayed).

A ﬁ lling device (ﬁ lling loop) will have been ﬁ tted on the

system.

This is usually on the pipework near to the boiler. If you

are unsure of its position, or you cannot identify it, consult

the installer who ﬁ tted the boiler.

The ﬁ lling loop usually consists of two taps and a

separate silver coloured braided ﬂ exible pipe with

connection ﬁ ttings. Only when re-pressurising should the

braided ﬂ exible pipe be connected between the two taps,

ensure that the nuts or the pipe ends are tightened

onto the taps.

Fully open one of the taps ﬁ rst and then while monitoring

the water pressure on the digital display, carefully open

the second tap. When the water pressure is to a

maximum of 1.5 bar turn both taps off.

Disconnect the ﬂ exible pipe from the taps (a small

amount of water may be present).

Keep the pipe in a safe place for future use.

Press the P button once to return to the main screen.

In the event of an error, the appliance will show a

sequence code displayed on the digital display of the

control panel (ﬁ g. 1). By pressing the “RESET“

button it is possible to relight the boiler (see page 51

for list of error codes).

1 USERS GUIDE

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1.4 APPLIANCE STATUS INDICATORS

Your boiler is equipped with a large LCD display that indicates the appliance operating status (ﬁ g. 1).

After a long period switched off (no power supply), the ﬁ rst switch on the internal backup circuit will charge in order to

maintain time

and update parameters. The screen will display

CLOW, after a few minutes of power su

CLOW, after a few minutes of power supply the display will be charged enough to allow all the functions.

Fig. 1

During the initial charge time, the display doesn’t allow the visualisation and/or modiﬁ cation function parameters. Instead other functions are working. When the appliance operates in rest mode, the display shows the boiler temperature and, for the time clock version only, the time. Alternatively the digital display also shows the water pressure.

KEY:

1 - ON/OFF button. Press to turn the boiler ON, “SUM” (hot water only) “WIN” (hot water and heating if set) and OFF. Press the button also to conﬁ rm selections.

2 - Press to reset the appliance if ever an error code is displayed.

3/4 - Temperature and function mode selectors. Press the arrow up or the arrow down to increase or decrease the heating or domestic hot water outlet temperature, when the digital display is in hot water or domestic set-point temperature. Press also to show the boiler values or to show the options program when the digital display is in menu setting.

5 - Press to set the Central Heating

Temperature required (when in winter mode).

Press the arrow up or the arrow down buttons to increase or decrease the temperature.

6 - Press to set the Domestic Hot Water

Temperature required. Press the arrow up or the arrow down buttons

to increase or decrease the temperature.

7 - TIMER MODE (time clock version only). Press to select “Auto” (heating times set), “Manual” (heating on all the time) and off (heating off).

8 - Press to show the boiler values.

Use the arrow up and arrow down buttons to select the following information:

PBAR: water pressure SFAN: speed fan (the display shows 3 digits (e.g. 500 = 5000 rpm) TFLOW: ﬂ ow temperature TRET: return temperature TDHW: domestic hot water temperature PWR: % power of modulation.

- Press for 3 seconds to enter into menu. Use the arrow up or arrow down buttons to select the following options:

- TIME (time clock version only): It is possible to set the time and the current day (Monday 1, Tuesday 2, Wednesday 3, Thursday 4, Friday 5, Saturday 6, Sunday 7), see section 1.7.

- PTMR (only time clock version): It is possible to set the timer, see section 1.8.

- BOIL: It is possible to set the boiler parameters C.H. max fan speed D.H.W. max fan speed Keep hot: “0” disabled and “1” enabled C.H. High/Low temperature: “1” high/“2” low.

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1.6 BOILER VALUE

It is possible to show the boiler value. Press P button to show the boiler value.

Use the arrow up and the arrow down

buttons, (item 3 and

buttons, (item 3 and 4 ﬁ g. 1) to show the following info:

PBAR: water pressure SFAN: speed fan TFlow: ﬂ ow temperature TRet: return temperature TDHW: domestic hot water temperature PWR: % power of modulation.

1.7 TIME (

time clock

time clock version only)

SETTING THE TIME AND DAY

(time clock

version only):

1. Press and hold the P button for 4 seconds.

2. Press the up and down arrows to select “TIME” and then press the enter button.

3. Press the up and down arrows to select the current hour (24h). Then press the enter button.

4. Press the up and down arrows to select the current minute and then press the enter button.

5. Press the up and down arrows to select the current day (1=Mon, 2= Tue etc.) and then press the enter button. The time is now set.

KEY

1 - Day indicator:

(time clock version only)

1. Monday

2. Tuesday

3. Wednesday

4. Thursday

5. Friday

6. Saturday

7. Sunday

2 - Time (time clock version only).

3 - Central Heating: when the appliance

is in central heating mode icon 3 will be

ﬂ ashing.

4 - Auto (time clock version only): when the

digital clock is in automatic function icon 4

is displayed.

5 - Water pressure: Shows the current

pressure in the system.

6 - Manual: When the digital timer is set to

manual icon 6 is displayed, in this mode the

central heating is on permanently.

1.5 DIGITAL DISPLAY

Fig. 2

7 - ON/OFF: When the appliance is ON icon 7 is displayed. 8 - Modulation ﬂ ame level: When the burner is lit, 3 different levels on icon 8 are displayed. 9 - Day function (

time clock

time clock version only). 10 - Temperature. 11 - Anomaly - Lock - out - Test function. 12 - Domestic hot water: when the appliance is in domestic hot water mode the icon will ﬂ ash.

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1.8 PROGRAMMING THE HEATING TIMES (

time clock vers

time clock version only)

The appliance incorporates a digital clock programmed with a default heating pattern (see table 1); however this can be modiﬁ ed to suit individual needs.

To change the programmed times:

1. Press and hold the P button for 3 seconds.

2. Press the up and down arrows to select “P TMR” and then press the enter button.

3. Press the up and down arrows to select the individual day you wish to set, or select the group of days (see table 2) then press the enter button.

4. Press the up and down arrows to select the ON1 time (ﬁ rst on time) and press the enter button.

5. Press the up and down arrows to set the OF1 time (ﬁ rst off) and press enter. Repeat this process for the remaining 3 settings. (Note: if not all 4 times are required then set the remaining on and off times to

24.00, this cancels the remaining on and off. For example see the weekend settings in (table 1.)

TABLE 1

TABLE 2

Once the times are set, press the P button and this will return to the main screen.

NB: If setting the times in a group, the days in the group will all be the same, however days not in this group will remain at the default time.

For example, setting Mon-Sat

For example, setting Mon-Sat will change all these days but Sunday will remain the same as table one unless changed individually.

The programmed times will only be activated when the boiler is in winter mode (section 1.4 key 1) and also set in auto mode (section 1.4 key 7). If you wish to override these times, press the timer mode button to select “MAN”, this puts the boiler in manual mode which overrides the timer on the boiler so the heating is on permanently (providing any external controls ﬁ tted are calling for heat). To turn the heating off, press the timer mode button to select off, this will now turn the heating off permanently until either auto or manual is selected.

1.9 DIAGNOSTIC

The display shows eventual error or faulty

message.

Stop boiler: The boiler stops the operating cycle

and waits for the disappearance of the cause of

the error in order to go back to be operating

mode.

Block boiler: The boiler requires a manual reset

to become operational again.

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KEY

1 - Condensate trap 2 - Gas valve 3 - Gas inlet 4 - Drain point 5 - CH ﬂ ow 6 - Diverter valve motor

7 - DHW outlet 8 - DHW sensor 9 - DHW flow detector 10 - DHW inlet 11 - Safety pressure relief valve

12-Water pressure transducer 13 - CH return 14 - Control board 15 - Circulation pump 16 - Automatic air vent 17 - Condensate drain 18 - Expansion vessel 19 - Main heat exchanger 20 - Spark electrode 21 - Sensing electrode 22 - Flue temperature sensor

23 - Spark igniter 24 - Fan 25 - Burner 26 - Manual air vent 27 - Overheat cut off thermostat 28 - CH flow sensor 29 - CH return sensor

2.0 GENERAL LAYOUT (Fig. 3)

Fig. 3

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KEY

1 - Flue exhaust manifold 2 - Condensate drain 3 - CH return 4 - CH return sensor 5 - Heat exchanger 6 - CH ﬂ ow 7 - Overheat cut off thermostat 8 - CH ﬂ ow sensor 9 - Manual air vent

10 - Burner 11 - Spark electrode 12 - Sensor electrode

13 - Fan 14 - Flue

temperature

temperature sensor 15 - Expansion vessel 16 - Automatic air vent 17 - Circulation pump 18 - Water pressure transducer

19 - Safety pressure relief valve 20 - Diverter valve motor 21 - Plate heat exchanger 22 - DHW sensor 23 - Gas valve 24 - Gas service cock 25 - CH compression ball valves 26 - DHW flow sensor 27 - DHW compression ball valves

2.1 OPERATING SCHEME (Fig. 4)

Fig. 4

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As the heating sensor reaches temperature

the fan speed modulates to maintain the temperature set on the display panel. When starting, the fan will always start at the set-point speed.

The boiler is ﬁ tted with an anti-cycling device

on the control board. This delays the boiler

from re-ﬁ ring within 10 minutes. If the heating temperature goes 20 °C below the set point, the burner restarts immediately. The domestic hot water will always take

priority and is unaffected by the anti-cycling

device.

2.6 GENERAL FUNCTION

The instrument panel permits regulation of the

boiler to partial heating requirements, between

maximum and minimum settings.

Air and gas are drawn by the fan for combustion.

The fan also forces exhaust gas through

the ﬂ ue to the outside, this creates a lesser

pressure in the sealed combustion chamber,

thus sucking in combustion air, through the

inlet duct.

The boiler water temperature is automatically

controlled by a built in thermostat.

Interior space temperature is set by the room

thermostat to be installed in the heating

system. The boiler already carries connection

terminals for this thermostat, as well as for

external timer if required. The

external timer if required. The burner continues to operate until it is stopped by the digital clock or one of the thermostats.

When the internal C.H. temperature sensor or the room thermostat intervenes the burner

shuts down. The fan stops but the pump continues to operate for 3 minutes.

The boiler also incorporates an anti-block

system which powers the pump every 24 hours, allowing it to operate for 2 minutes if the boiler has not been in use. This operation may in some cases be heard for a short period when the pump has been activated.

The heat exchanger in the D.H.W. circuit is a stainless steel plate heat exchanger water

to water, and domestic water is heated by converting the water in the central heating circuit. The transfer of heat is very high because the two ﬂ uids move in a counter direction.

Select the winter position by summer/winter

button (item 1 ﬁ g. 1).

2.2 INTRODUCTION

This boiler is designed for the production of

central heating and domestic hot water combined in one unit. It is ﬁ tted with an automatic domestic hot

water priority valve.

It is possible to select either a summer or

winter function.

With the summer position only being for

domestic hot water.

The winter position being for central heating

with domestic hot water priority.

2.3

DESCRIPTION OF CONTROL SYSTEM

AND SEQUENCE OF OPERATION

2.4 Domestic hot water mode

When the appliance is in rest mode,

select the summer position by pressing

the ON/OFF button (item 1 fig. 1) please

ensure that the heating circuit is charged

with water (above 1 bar).

If the domestic hot water tap is turned

on the boiler will function in the

following sequence:

The pump starts. The fan starts and sends a signal back to the ignition board that the fan is running.

The spark ignition system is powered which in

turn commences the spark igniter to operate and light the burner.

At this point the ignition board opens the gas

valve to light the burner.

When the electrode sensor senses the signal

that the burner is alight, the spark igniter stops.

The fan speed settings on the boiler increases

to the maximum permissible speed over

a period of 5 seconds and will remain at its

maximum required power until its maximum

regulated temperature is achieved and then

will modulate to maintain this.

When the domestic hot water tap is closed the

diverter valve goes back into rest mode, the

burner is shut down along with the fan which is

also switched off.

2.5 Central heating mode

If the appliance is in winter mode with a

demand for heat to supply radiators, etc. ,

with the heating circuit fully cha

with the heating circuit fully charged above 1 bar, so as to operate the low water sensor device the boiler will start in the same way as domestic hot water mode.

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When a hot water tap is turned on the diverter

valve motor moves to exclude the central

heating circuit, the boiler auto matically

modulates to maintain the domestic hot water

at a constant temperature.

The water temperature can be regulated by

the digital display.

When domestic hot water is being drawn off

the burner and pump perform as they do

during central heating except that the burner

is commanded by the D.H.W. thermostat.

When D.H.W. is no longer called for (tap is

turned off), the boiler will automatically return

to the central heating mode.

Select the summer position by pressing the

summer/winter button. The boiler functions

like an automatic gas hot water heater.

When D.H.W. is no longer required the

burner and pump and fan will immediately

turn off.

This also takes place when in winter mode, if there is no demand for heat to the central heating system or until the digital clock and room thermostat (if ﬁ tted) demands the central heating circuit.

2.8 SAFETY DEVICE

In both central heating and domestic hot

water mode safe operation is ensured by a

control board which shuts off the main

burner, if the fan stops or the ﬂ ue or combustion air intake duct is obstructed.

An overheat cut off thermostat acts to turn

off the burner to resettable “lockout”.

A safe ty v alve is ﬁ tted on the central heating circuit set at 3 bar. A low water pressure switch set at 0.4 bar is

ﬁ tted on heating circuit, to prevent the boiler operating below this boiler system pressure.

2.7 OVERALL DIMENSION (Fig. 5)

2.10 PRESSURE DROP ACROSS APPLIANCE (Fig. 7)

2.9 AVAILABLE PUMP HEAD (Fig. 6)

Fig. 5

Ravenheat CS 80, CS 90, CS 90 T, CS 80 T Instructions For Use Installation And Servicing

Specifications and Main Features

Frequently Asked Questions

User Manual