Protherm 100EC Manual

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THIS IS A CAT II2H3+ APPLIANCE
USER, INSTALLATION, AND
SERVICING INSTRUCTIONS
Wall hung com ination oiler
PROTHERM 100EC
Technical Advice & After Sales Service
01773 828100
4728
221932A.05.01

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100EC
Protherm 100EC
Mandatory warning for CE countries
WARNING, these appliances were designed, approved and inspected to meet the
requirements of the English market. The identification plate located on the inside of the appliance certifies the
origin where the product was manufactured and the country
for which it is intended.
If you see any e ception to this rule, please contact your nearest stockist.
Thank you in advance for your assistance.
Note: The boiler serial number is marked on the data label attached to the fascia behind the front panel.
Refer to the ‘Introduction’ section for a description of the basic functions of the boiler. The ‘User’ section
describes how to safely operate the boiler.
sers’ Instructions
Introduction ............................................................................................................................ 2
Controls and lighting .............................................................................................................. 2
Draining and filling.................................................................................................................. 4
Heating safety valve .............................................................................................................. 4
Servicing/maintenance ........................................................................................................... 4
Cleaning ................................................................................................................................. 4
Boiler casing .......................................................................................................................... 4
Installation Instructions
Introduction ............................................................................................................................ 5
Technical data ........................................................................................................................ 6
Dimensions ............................................................................................................................ 7
Pressure available ................................................................................................................. 7
Boiler schematic .................................................................................................................... 8
Installation section ................................................................................................................. 9
Terminal positions .................................................................................................................. 9
Heating and hot water system design .................................................................................. 10
Boiler installation ................................................................................................................ 11
Boiler template ..................................................................................................................... 12
Telescopic horizontal flue installation ................................................................................... 13
Classic horizontal flue installation ........................................................................................ 15
Vertical flue installation ........................................................................................................ 16
Flue configurations............................................................................................................... 17
Electrical connection ............................................................................................................ 18
Commissioning .................................................................................................................... 19
Servicing Instructions
Routine cleaning and inspection ........................................................................................... 21
Replacement of parts........................................................................................................... 22
Schematic wiring diagram .................................................................................................... 25
Fault finding ......................................................................................................................... 26
Conversion to LPG...............................................................................................................28

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Diagram 1
USERS INSTRUCTIONS
The Protherm 100EC is a wall mounted combination boiler providing central heating and instantaneous domestic
hot water.
These instructions should be carefully followed for the safe and economical use of your boiler.
Gas leak or fault
If a gas leak or fault e ists or is suspected, turn the boiler and gas supply off and consult the local gas company
or your Installer/Service provider.
In case of power supply failure
The boiler no longer operates.
As soon as power supply is restored, the boiler will restart automatically.
In case of loss of water in the system
CA TION: The boiler is installed as part of a sealed system which must only be drained and filled by a competent
person.
If the pressure LED diod (2) flashes the pressure in CH system is less than 1 bar and the system must be filled
up immediately.
Important notice: A central heating system cannot operate satisfactorily unless it is properly filled with water and
unless the air initially contained in the piping systems has been properly bled off. If these conditions are not
satisfied, air noise will occur within the system and the boiler may fail to operate.
Air in the heating system
Persistent air in the heating system may indicate leaks in the system or corrosion taking place. Call your Installer
/Service provider.
Overheating safety
In the event of problem, the overheat safety device causes safety shutdown of the boiler. If this happens, call
your Installer/Service provider.
CONTROLS AND LIGHTING
The control panel is located at the lower front of the boiler casing. The controls on this panel allow the boiler to be
started, shut down, controlled and monitored during use, see diagram 1.
Controls:
1 – mains on/off switch 7 – pressure button
2 – system pressure LED 8 – reset button
3 – central heating LED 9 – decrease button
4 – domestic hot water LED 10 – comfort mode LED
5 – timeclock 11 – mode button
6 – increase button 12 – display
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The following information is displayed:
•Actual heating temperature (°C) - LED (3) lights on – displayed during standby
•Actual domestic hot water temperature (°C) - LED (4) lights – displayed during hot water demand
•System pressure (bar) – LED (2) lights – for 25 sec after Bar button is pressed
•Diagnostic messages – displayed letter F and numbers from 0 to 4
Make sure that:
• The boiler is connected to the electrical supply.
• The boiler gas service cock is open.
• The CH system is filled up and pressurized between 1 and 2 bar.
The boiler is now ready to start.
To start the boiler
Switch on the mains switch (display will light up). The version of the software used is displayed for 2 sec.
To stop the boiler
Switch off the mains switch (display will go out).
If the boiler is to be out of operation for a long period, turn off the gas service cock.
Boiler setting
All parameters are adjustable by means of 3 buttons, pushing the RESET button restarts the boiler.
Note: Buttons must be pressed in the middle.
Domestic hot water setting
• Press Mode button until LEDs (4) flash.
• Using buttons (6) and (9) set the desired hot water temperature.
Setting steps: 40, 42, 45, 48, 50, 52, 55, 58, 60 C
• Set ´– –´ if hot water is not required.
• Press Mode button to save new setting.
Heating setting / summer mode setting
• Press Mode button until LED (3) flashes.
• Using buttons (6) and (9 set the desired heating temperature.
Setting steps: 45, 50, 55, 60, 65, 70, 75, 80, 85 C
• Set ´– –´ if only hot water is required (summer mode).
• Press Mode button to save new setting.
The heating will operate according to the requirements of the timeclock and/or
room thermostat if fitted or, will operate according to the system requirements.
Domestic hot water (DHW) always has priority over central heating (CH).
Note: All new settings are stored by pressing MODE button. If MODE button is
not pressed for 20 sec the display reverts to standby mode and old settings
are retained.
Helpfull hint
If you get confused and wish to start again, switch boiler off, press and hold
button (9) and switch boiler on by main switch. The boiler will revert to the
internal factory set programme (heating temperature 80 °C, hot water tempera-
ture 50 °C, ma imum heat output).
Timeclock
The boiler can be switched on and off automatically by the built-in timeclock.
To set the timeclock, proceed as follows: (refering to diagram 1).
Press in the tappets corresponding to the time you want the boiler to be on.
For e ample if you want the boiler to be on between 7 AM and 9 AM, push in all the tappets between 7 and 9.
Set the times you want the boiler to be on for the rest of the day in the same way.
Note: The timeclock setting is in 24 hour format. Therefore, if you want the boiler to come on at 2 PM you must
push in the tappets at 14.
To set the correct time rotate the clock by hand until the current time is indicated by the arrow at the top of the
clock.
To operate the boiler according to your selected times, place the grey lever to the position.
To have the boiler permanently ‘ON’, place the grey lever to the ‘I’ position.
To have the boiler permanently ‘OFF’, place the grey lever to the ‘0’ position.
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The comfort mode of domestic hot water
Comfort mode means that boiler is kept in pre-heated stage and waiting time for DHW delivery is shorten.
There are two ways of comfort DHW mode available:
Limited - if comfort mode of hot water is required only for limited time.
Open and close a bath tap (On/Off for interval between 2 and 5 seconds). It is automatically recognized by
boiler control unit and primary system water is preheated for immediate hot water preparation.
Permanent - if comfort mode of hot water is required permanently.
Be sure, the display is in basic mode.
Press button (6).
Comfort LED (10) will light up - comfort mode is ON.
Comfort mode will OFF by ne t press of button (6) - diode (10) will go out.
Safety lockout
In the event of a safety lockout, the digital display will show ‘F1’.
Reset boiler by pressing the RESET button.
IMPORTANT: If safety lockout occurs frequently, or if any other fault is indicated,
contact your Installer/Service Provider.
DRAINING AND FILLING
CA TION: The boiler is installed as part of a sealed system which must only be
drained and filled by a competent person.
If the pressure drops to 1 bar the pressure LED on the Bar button starts to flash.
The boiler will continue to work, but the LED warns that pressure in the CH
system is on the low limit and CH system must be filled. To fill the system, open
the tap on the filling loop below the boiler. Press the Bar button to read the
system pressure. When the pressure is between 1 and 2 bar, close the tap.
Note: If there is persistent loss of system pressure, you must consult your Installer/Service Provider.
HEATING SAFETY VALVE
CA TION: A safety valve with a discharge pipe is fitted to this boiler.
The valve M ST NOT BE TO CHED e cept by a competent person. If the valve discharges at any time, switch
the boiler off and isolate it from the electrical supply. Contact your Installer/Service Provider.
SERVICING / MAINTENANCE
To ensure the continued efficient and safe operation of the boiler, it is recommended that it is checked and
serviced at regular intervals. The frequency of servicing will depend upon the installation conditions and usage
but, in general, once a year should be enough.
CLEANING
The boiler casing can be cleaned with a damp cloth followed by a dry cloth to polish.
Do not use abrasive or solvent cleaners.
BOILER CASING
CA TION: Do not remove or adjust the casing in any way, as incorrect fitting may result in faulty operation.
If in doubt, contact your Installer/Service Provider.
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INSTALLATION INSTRUCTIONS
INTROD CTION
The Protherm 100EC is a wall mounted combination boiler providing central heating and instantaneous domestic
hot water.
The boiler is of the II2H3+ category for use with Natural gas (G20) as distributed in the United Kingdom, or with
Butane or Propane gas (G30/G31) with the appropriate conversion kit.
Conversion kit:
Conversion
Natural gas (G20) to G30/G31 . . . . . . . . . . 99800934
Modification must only be carried out by a suitably qualified engineer.
Boilers burning LPG or similar gases M ST NOT be fitted in basements or below ground level.
These instructions should be carefully followed for the safe and economical use of your boiler.
The boiler has a fan assisted, balanced, flue which both discharges the product of combustion to, and draws the
combustion air from the outside of the building.
Accessories
A range of accessories are available including, vertical flue components. For further information, contact you
nearest stockist.
Gas Safety (Installation and se) Regulations
In the interests and that of gas safety, it is the law that ALL gas appliances are installed and serviced in by a
competent person in accordance with the above regulations.
Gas leak or fault
If a gas leak or fault e ists or is suspected, turn the boiler and gas supply off and consult the local gas company
or your Installer/Service Provider.
Boiler controls
The control panel, located at the lower front of the boiler, allows the boiler to be started, shut down, controlled and
monitored during use, refer to ‘ sers Instructions’.

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TECHNICAL DATA
CE Certification .............................................. n° ............................................................... 49AU2915
Class .......................................................................................................................................... II2H3+
Type ........................................................................................................................................ C12, C32
Gas type ................................................................................. G20 ................ G30 ...................... G31
Ma . / min. heat input .................................... kW ............... 30.5/12.1 ........ 30.5/12.1 .......... 30.5/12.1
Ma . / min. heat output ................................. kW ............... 27.4/10.0 ........ 27.4/10.0 .......... 27.4/10.0
EFFICIENCY (PCI)
Nominal efficiency .......................................... % ........................................................................ 89.8
Efficiency at 30% load .................................... % ........................................................................ 86.7
HEATING
Temperature range ......................................... °C ....................................................................45 – 85
E pansion vessel ............................................. l ............................................................................. 7
E pansion vessel pressure ........................... bar ............................................................................. 1
Ma . working pressure .................................. bar ............................................................................. 3
Ma . system temperature .............................. °C ........................................................................... 85
Ma . system capacity ....................................... l ..........................................................................130
HOT WATER
Flow rate at 30°C temperature rise ..............l/min ........................................................................ 13.1
Flow rate at 35°C temperature rise ..............l/min ........................................................................ 11.3
Min. water flow ............................................l/min ............................................................................. 2
Ma . / min. supply pressure .......................... bar ........................................................................ 6 / 1
Temperature range ......................................... °C ....................................................................40 – 60
ELECTRICAL DATA
Voltage / frequency .................................... V/Hz ................................................................ ~230 / 50
Current ............................................................. A .......................................................................... 0.8
Power .............................................................. W ..........................................................................160
Level of protection .......................................... IP ....................................................................... IP 44
DIMENSIONS
Width / height / depth ................................... mm .......................................... .............450 / 800 / 355
Weight ........................................................... kg ........................................................................... 42
CONNECTIONS
Heating flow / return ..................................... mm ........................................................................... 22
Domestic Water inlet / outlet ........................ mm ........................................................................... 15
Gas .............................................................. mm ........................................................................... 22
Flue products outlet / air inlet ∅ ..................... mm ....................................... horiz. 60/100, vert. 80/125
Horizontal flue length min. – ma . ................... m .................................................................... 0.3 – 3
Vertical flue length min. – ma . ....................... m .................................................................... 0.5 – 5
GAS S PPLY PRESS RE
Burner pressure ......................................... mbar ............... 2.1 – 15.0 ...... 3.8 – 28.8 ........4.1 – 36.7
Nominal pressure ....................................... mbar .....................20 .................. 29 ......................... 37
Injectors diameter ..................................... Ć mm .................... 1.2 ................ 0.73 ..................... 0.73
GAS CONS MPTION
Q ma / Q min ............................................ m3/h ................ 3.2 / 1.3 .......
2.4 / 0.9 kg/h ...... 2.4 / 0.9 kg/h
Air flow........................................................ m3/h ....................135 ................ 135 .......................135

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Diagram 2
Diagram 3
1 – Heating flow (pipe diameter 22 mm)
2 – Hot water outlet (pipe diameter 15 mm)
3 – Gas inlet (pipe diameter 22 mm)
4 – Cold water mains inlet (pipe diameter 15 mm)
5 – Heating return (pipe diameter 22 mm)
6 – Wall
7 – Wall fi ings
8 – Outer cover
DIMENSIONS AND PRESS RE AVAILABLE

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1 – Air pressure switch
2 – Fan
3 – Combustion chamber
4 – Heat e changer
5 – Burner
6 – Gas valve
7 – E pansion vessel
8 – Pump
9 – Water flow sensor
10 – Safety valve
11 – Heating return
12 – Domestic cold water inlet
13 – Gas inlet
14 – DHW thermistor
15 – DHW outlet
16 – Automatic by-pass
17 – Heating flow
18 – Drain point
19 – Water pressure sensor
20 – 3-way valve
21 – Actuator
22 – Domestic heat e changer
23 – CH temperature sensor
24 – High limit thermostat
Diagram 4
BOILER SCHEMATIC

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INSTALLATION SECTION
Clearances
To allow for servicing, the boiler should be installed with the following clearances:
50 mm either side of the boiler
600 mm to the front of the boiler
300 mm below the boiler
200 mm above the boiler
TERMINAL POSITION
The minimum acceptable spacings from the terminal to obstructions and ventilation openings are shown in dia-
gram 5 below:
Diagram 5
Minimum dimensions (in mm) for the positioning of flue terminals
a Under a window . . . . . . . . . . . . . . . . . . . . . . . . . 300
b Under an air vent . . . . . . . . . . . . . . . . . . . . . . . 300
c Under a gutter . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
d Under a balcony . . . . . . . . . . . . . . . . . . . . . . . . 300
e From an adjacent window . . . . . . . . . . . . . . . . . 300
f From an adjacent air vent . . . . . . . . . . . . . . . . . 300
g From vertical drain pipes or soil pipes . . . . . . . . . 75
h From an e ternal corner of the building . . . . . . . 300
i From an internal corner of the building. . . . . . . . 300
l From the ground or from another floor . . . . . . . . 300
m Between two terminals vertically. . . . . . . . . . . 1500
n Between two terminals horizontally . . . . . . . . . . 300

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HEATING SYSTEM DESIGN
The Protherm 100EC is compatible with any type of sealed system installation, i.e. radiators, fan convectors
etc.
Pipe sectional areas shall be determined in accordance with normal practices, using the pump curve, refer to
‘Technical Data’. The distribution system shall be calculated in accordance with the output requirements of the
actual system, not the ma imum output of the boiler. However, provision shall be made to ensure sufficient flow so
that the temperature difference between the flow and return pipes is less than or equal to 20 °C. The minimum flow
is 500 l/h.
The piping system shall be routed so as to avoid any air pockets and facilitate permanent venting of the installation.
Bleed fittings shall be provided at every high point of the system and on all radiators.
The total volume of water permitted for the heating system depends, amongst other things, on the static head in the
cold condition. The e pansion vessel on the boiler is pressurised at 1 bar (corresponding to a static head of 10 m
wg.) and allows a ma imum system volume of 130 litres for an average temperature of 75 °C and a ma imum
service pressure of 3 bar. This pressure setting can be modified at commissioning stage if the static head differs.
Provision shall be made for a drain valve at the lowest point of the system.
Thermostatic radiator valves are permitted, however, not all radiators must be fitted with this type of valve and
particularly where the room thermostat is fitted.
A WRC approved filling loop is supplied with the boiler to enable correct filling of the system.
In all cases, it is ESSENTIAL that the system be thoroughly flushed prior to installing the new boiler.
Domestic hot water system design
Copper tubing or plastic Hep2O may be used for the domestic hot water system. Unnecessary pressure losses
should be avoided. The domestic hot water supply pressure must be between 1 and 6 bar. If the pressure e ceeds
6 bar, a pressure reducing valve must be fitted. In known hard water areas, it is recommended that a suitable scale
reducing device is fitted to the cold water supply to the boiler.
Diagram 6
Boiler connections
AHeating flow
BHot water outlet
CGas connection
DCold water mains inlet
EHeating return
FSafety valve discharge connection
Heating system connections
- Pipe diameter 22 mm.
Hot water system connections
- Pipe diameter 15 mm.
Gas connection
- Pipe diameter 22 mm.
Safety valve discharge connection
- Pipe diameter 22 mm.
Note: White colored washers must be used for the hot water system connections.

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Safety valve discharge
WARNING: It must not discharge above an entrance or window or any type of public access area.
Connect the safety valve discharge pipe to the valve, the discharge must be e tended using not less than 15 mm
o.d. pipe, to discharge in a visible position outside the building, facing downward, preferably over a drain. The pipe
must have a continuous fall and be routed to a position so that any discharge of water, possibly boiling or steam,
cannot create any danger to persons, damage to property or e ternal electrical components and wiring. Tighten all
pipe connection joints.
Gas connection
The supply from the governed meter must be of adequate size to provide a constant inlet working pressure of
20 mbar for Natural gas (28 – 30 mbar for Butane or 37 mbar for Propane).
To avoid low pressure problems, it is recommended that the supply is taken to the boiler using 22 mm pipe as far
as possible.
On completion, the gas installation must be tested using the pressure drop method and purged in accordance with
the current issue of BS6891.
Gas Safety (Installation and se) Regulations
In your interests and that of gas safety, it is the law that ALL gas appliances are installed and serviced by
a competent person in accordance with the above regulations.
Statutory requirements
The installation of this boiler must be carried out by a competent person in accordance with the relevant require-
ments of the current issue of:
The Gas Safety (Installation and Use) Regulations
The Building Regulations
The local water company Bylaws
The Building Standards Regulations (Scotland)
The Health and Safety at Work Act
Sheet metal parts
WARNING: When installing or servicing this boiler, care should be taken when handling the edges of sheet metal
parts to avoid the possibility of personal injury.
Installing the boiler
Prior to installing the boiler, the system must be thoroughly flushed to eliminate any foreign bodies and contami-
nents such as filings, solder, particles, oil, grease etc.
Note: Solvent products could cause damage to the system.
BOILER INSTALLATION
To install the boiler, proceed as follows:
• Allowing sufficient clearances for servicing/repair, place the template on the wall (see diagram 7).
Note: The boiler can be installed only on the closed wall.
• Determine the position of the flue hole and drill hole for flue, preferably using a 120 mm core drill.
• Drill two 10 mm holes for the wallplugs supplied.
• Screw fi ing screws supplied into wallplugs, leave proud by appro . 10 mm.
Note: Boiler fi ing holes are keyhole type slots at the top of the boiler to allow easy hanging of boiler.
• Remove template.
• Hang the boiler on the screws and tighten screws.
Note: As a option the hanging bracket can be used. Two screws are sufficient for fi ing of the hanging bracket.
Hanging bracket fi ing screws have to be fully tight before the boiler is hung on.
Pipework connections
• Remove plastic caps from boiler connections.
• Connect the central heating pipework connections and isolating cocks as shown on diagram 6.
• Connect the domestic cold water inlet connection and isolating cock.
• Connect the hot water outlet connection.
• Connect the safety valve discharge pipe.
• Finally, connect the gas connection and isolating cock.

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Diagram 7
BOILER TEMPLATE
Boiler connections
A Heating flow
B Hot water outlet
C Gas connection
D Cold water mains inlet
E Heating return
F Safety valve discharge connection

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TELESCOPIC HORIZONTAL FL E INSTALLATION
Flue Systems
Standard Top Outlet Flue Pack Pt. No. 230483
1 Metre Extension Kit Pt. No. 230484
45° Flue Bend Pack Pt. No. 230485
90° Flue Bend Pack Pt. No. 230486
Flue Position and Length
• Determine flue application, length and terminal position before start-
ing. Refer to diagram a2.
• Place spacer (K) (supplied with boiler) onto top of boiler (see dia-
gram 9).
• If you are using a Flue Bend, please follow the instructions sup-
plied with the kit.
Note: For each 90° flue bend fitted, reduce overall flue length by 1m.
For each 45° flue bend fitted, reduce overall flue length
by 1/2m.
• To make a neat finish to the flue outlet a flue collar kit, part
No. 443286, with instructions, is available, see diagram a1.
Flue Assembly
• E tend the telescopic flue to the required length, making sure
that the minimum overlap is no less than 25 mm, and that the
flue terminal projects 15 mm minimum beyond wall face, see
diagram a2.
• Carefully drill though air duct pilot hole and secure with self tapping screw provided in fittings pack, see diagram a2.
• Seal the joint with tape provided.
• If the flue system requires the addition of flue e tension kits, drill, seal and secure them with the self tapping
screw and tape provided.
Note: Should any one of the flue sections require cutting to obtain desired flue system length, cut at the end
opposite the e panded end.
• If the boiler is not to be fitted for some time cover the hole in wall.
Top Outlet Side or Rear Flue Fixing
Make good the area around the flue inside and outside after installation of the boiler.
Flue Positioning
• Push the flue assembly into and through the hole such that it is within the wall, and does not stick out into the
room. Do not push the flue assembly too far into the hole as it has to be pulled back into the boiler and secured.

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SKCAPELF
MMINIM
LLAW
SSENKCIHT
MMINIM
ELF
HTGNEL
MMIXAM
ELF
HTGNEL
MORFECNATSIDMMIXAM
GNITNOMRELIOB
LANRETXEOTECAF
"B"ECAFLLAW
OTGNISACRELIOB
LLAWLANRETXE
"A"ECAF
.DTSPOT
RAER
EDIS
57
57
061
061
075
075
584
—
—
564
.DTXEPOT
RAER
EDIS
57
57
061
061
048
048
557
—
—
537

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CLASSIC HORIZONTAL FL E
INSTALLATION
AAir inlet pipe
BTerminal
CSeal and clamp
DElbow
EGasket
FScrews
GE ternal rubber sealing collar
IInternal plastic collar
J‘O’ rings
KSpacer (see diagram 9)
• Fit gasket (E) onto underside of flue elbow (D).
• Carefully insert ‘O’ ring (J) into upper and lower parts of inner elbow.
• Place spacer (K) (supplied with boiler) onto top of boiler (see diagram 9).
• Fit elbow onto spacer ensuring elbow inner connection locates correctly onto fan outlet.
• Fit e ternal rubber sealing collar (G) onto air inlet pipe (A).
• Fit flue through hole in wall and pull up so that e ternal collar (G) is flush against outside wall.
• Fit seal and clamp (C) to flue and assemble into elbow (D) making sure that both inner and outer pipes are sealed
properly.
Note: Ma imum horizontal length with no bends is 3 m. For horizontal flue lengths up to 1 m the restrictor must be
left in the fan outlet, see diagram 9. For horizontal flue lengths between 1 and 3 m, remove the restrictor (R).
• Tighten up clamp using screws provided.
Note: Should it be necessary to cut the flue, always cut equal amounts from both inner and outer pipes.
Always cut the end furthest from the terminal.
For each 90° flue bend fitted, reduce overall flue length by 1 m.
For each 45° flue bend fitted, reduce overall flue length by 1/2 m.
Horizontal flue kit 85090
Flue extension kit 85091
90° concentric bend kit 85092
45° concentric bend kit 85093
Diagram 8
Diagram 9
Standart top
outlet flue
90° elbow
E tension
pipe
Standart top
outlet flue

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Diagram 10
VERTICAL FL E INSTALLATION
• Fit gasket (E) onto underside of vertical adaptor (O) – see diagram 10.
• Carefully insert ‘O’ ring (J) into vertical adaptor inner spigot.
• Place spacer (K) on the top of boiler.
• Fit vertical adaptor (O) onto spacer (K) ensuring adaptor inner connection locates correctly onto fan outlet.
• For flat roof installation, fit flat roof flashing collar (part no. 85107)
• Fit e tension pipes (M) as required.
• For pitch roof installation, fit pitch roof flashing (part no. 85105).
• Fit flue terminal (L) onto roof ensuring flashing makes a watertight joint.
Note: Ma imum vertical height with no bends is 5 m.
Should it be necessary to cut the flue, always cut equal amounts from both inner and outer pipes.
Connect condensate trap (supplied) to vertical flue adaptor when flue length e ceeds 3 m.
Connect 15 mm plastic pipe (not supplied) to a suitable drain.
For vertical flue lengths up to 3 m the restrictor must be left in the fan outlet, see diagram 9.
For vertical flue lengths between 3 and 5 m, remove the restrictor (R).
For each 90° flue bend fitted, reduce overall flue height by 1 m.
For each 45° flue bend fitted, reduce overall flue height by 1/2 m.
Vertical flue terminal (black) 85103
Vertical flue terminal (brick) 85104
Pitched roof flashing 85105
Flat roof flashing 85107
Flue extension pipe 85099
90° concentric bend kit 85101
45° concentric bend kit 85102

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FL E CONFIG RATIONS
Diagram 11

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18 100EC
ELECTRICAL CONNECTION
Warning: This boiler must be earthed.
All system components must be of an approved type.
Connection of the whole electrical system and any heating system controls to the electrical supply must be through
a common isolator.
Isolation should preferably be by a double pole switched fuse spur bo having a minimum contact separation of
3 mm on each pole. The fused spur bo should be readily accessible and preferably adjacent to the boiler. It should
be identified as to its use.
A fused three pin plug and shuttered socket outlet may be used instead of the fused spur bo , provided that:
a) They are not used in a room containing a bath or shower.
b) Both the plug and socket comply with the current issue of BS1363.
The mains electrical supply must be maintained at all times in order to provide domestic hot water and frost
protection.
It is recommended that a room thermostat is fitted.
Thermostatic radiator valves may be installed in addition to the room thermostat.
Note: For further information, see The Building Regulations 1991 - Conservation of fuel and power - 1995 edition -
Appendi G, table 4b.
DO NOT INTERR PT THE MAINS S PPLY TO THE BOILER WITH A TIME SWITCH OR PROGRAMMER.
The Protherm 100EC is delivered with 1metre mains supply lead ready connected.
The electrical supply cable is the original spare part and must be replaced only by original supply cable for Protherm
100EC boiler.
External controls
The boiler will work for heating AS DELIVERED without a room thermostat fitted provided the two wires on the
integral e ternal controls connection REMAIN LINKED TOGETHER (as supplied). If a room thermostat is required,
it must be connected as shown below and the link must be removed.
ANY ROOM THERMOSTAT SED M ST BE OF THE VOLTAGE FREE TYPE.
WARNING: ON NO ACCO NT M ST ANY ELECTRICAL VOLTAGE BE APPLIED TO EITHER
OF THE TERMINALS OF THE EXTERNAL CONTROLS CONNECTION
WARNING: This boiler must be wired in accordance with these instructions. Any fault arising from incorrect wiring
cannot be put right under the terms of the guarantee.
Diagram 12