Baxi Potterton WH65 User Manual

WALL-MOUNTED CONDENSING BOILERS  
WH 46  
WH 65  
INSTALLATION, OPERATION AND MAINTENANCE MANUAL  
GB  
IE  
0085  
1. INSTRUCTIONS PRIOR TO INSTALLATION  
This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler  
must be connected to a central heating system and/or to a domestic hot water supply system in compliance  
with its performances and output power.  
The boiler must be installed by a Qualified Service Engineer ensuring that the following operations are carried  
out:  
a) Careful checking that the boiler is fit for operation with the type of gas available. For more details see the  
notice on the packaging and the label on the appliance itself.  
b) Careful checking that the flue terminal draft is appropriate; that the terminal is not obstructed and that no  
other appliance exhaust gases are expelled through the same flue duct, unless the flue is especially desi-  
gned to collect the exhaust gas coming from more than one appliance, in conformity with the standards  
and regulations in force.  
c) Careful checking that, in case the flue has been connected to pre-existing flue ducts, thorough cleaning  
has been carried out in that residual combustion products may come off during operation of the boiler and  
obstruct the flue duct.  
d) To ensure correct operation of the appliance and avoid invalidating the warranty, observe the following  
precautions:  
1. Hot water circuit:  
If the water hardness is greater than 20 °F (1 °F = 10 mg calcium carbonate per litre of water) a  
polyphosphate or comparable treatment must be used in response to current regulations.  
2. Heating circuit  
2.1.New system  
Before proceeding with installation of the boiler, the system must be cleaned and flushed out thoroughly  
to eliminate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary  
products.  
To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non  
alkaline. The recommended products for cleaning are:  
SENTINEL X300 or X400 and FERNOX heating circuit restore. The use of this product must be strictly  
in accordance with the maker’s directions. Finally the system must be dosed with a suitable inhibitor  
at 1% system volume.  
2.2. Existing system  
Before proceeding with installation of the boiler, the system must be cleaned and flushed out to remove  
sludge and contaminants, using suitable proprietary products as described in section 2.1.  
To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-  
alkaline such as SENTINEL X100 and FERNOX heating circuit protective.  
Remember that the presence of foreign matter in the heating system can adversely affect the operation  
of the boiler (e.g. overheating, noisy operation, or failure of the heat exchanger may occur).  
Failure to observe the above will render the warranty null and void.  
2. INSTRUCTIONS PRIOR TO COMMISSIONING  
Initial lighting of the boiler must be carried out by a qualified service engineer. Ensure the following operations  
are carried out:  
a) Compliance of boiler parameters with (electricity, water, gas) supply systems settings.  
b) Compliance of installation with the standards and regulations in force.  
c) Appropriate connection to the power supply and earthing of the appliance.  
Failure to observe the above will render the warranty null and void.  
Prior to commissioning remove the protective plastic coating from the unit. Do not use any tools or abrasive  
detergents as you may damage the painted surfaces.  
INSTRUCTIONS PERTAINING TO THE USER  
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3. COMMISSIONING OF THE BOILER  
To correctly light the burner proceed as follows:  
1) Provide power supply to the boiler;  
2) Open the gas cock;  
3) Follow the directions given below regarding the adjustments to be made at the boiler control panel.  
Figure 1  
IMPORTANT: The instructions contained in this manual relating to the operation of the hot water circuit  
are relevant only if the appliance is actually connected to a hot water system.  
KEYS  
Hot water on/off key  
DISPLAY SYMBOLS  
Operation in hot water mode  
Operation in central heating mode  
Operation in automatic mode  
Central heating water temperature setting key  
Hot water temperature setting key  
Operation in manual mode at the maximum  
temperature set  
Reset key  
Operation in manual mode at minimum tem-  
perature  
Program access and scroll keys  
Standby (off)  
Program access and scroll key  
Outdoor temperature  
Flame present (on)  
Parameter setting key (decrease value)  
Parameter setting key (increase value)  
Data display reset key  
Resettable alarm warning  
Central heating mode setting key  
MAIN display  
SECONDARY display  
INSTRUCTIONS PERTAINING TO THE USER  
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3.1 DESCRIPTION OF KEYS  
(2) This key can be pressed to set the central heating water output temperature as described in point  
3-3.  
(3) This key can be pressed to set the hot water temperature as described in point 3-4.  
(10) Central heating mode operating key  
The  
key can be pressed to activate four boiler central heating operating modes; these modes are  
identified by a black cursor line underneath the relative symbol on the display, and are as follows:  
Dash  
“Automatic mode”  
active  
Figure 2  
a)  
Automatic operation. Operation of the boiler is controlled by the timed program as described in point  
3-5.1 “Daily timed program for operation of the central heating system”;  
b)  
c)  
Manual operation at the maximum temperature set. The boiler comes into operation regardless of  
the timed program set. The operating temperature is that set using the  
the maximum central heating temperature”);  
key (point 3-3: “Setting  
Manual operation at minimum temperature. The operating temperature is that set in point 3-6:  
“setting the minimum central heating temperature”.  
The manual transition from positions a) and b) to position c) involves shut-down of the burner and  
disconnection of the pump after the post-circulation delay interval (the factory setting for this parameter  
is 3 minutes).  
d)  
standby. The boiler does not work in central heating mode, although the frost protection function is  
still enabled.  
(1) Hot water on/off key: Press this key to activate or inhibit this function, which is identified by the  
appearance on the display of two black dashes under the  
symbol.  
(4) Reset key. In case of a fault, referred to in point 3-7 “Faults and resetting the boiler”, the boiler  
can be restarted by pressing this key for at least two seconds.  
If this key is pressed with no fault present, the display will show the message “E153”, and the same  
key has to be pressed again (for at least two seconds) to restart the boiler.  
(9) Data key. This key can be pressed repeatedly to display the following information:  
- Temperature (°C) of the hot water ( );  
- outdoor temperature (°C) ( ); only provided with the outdoor temperature sensor probe  
connected.  
Press either of the  
keys to return to the main menu.  
INSTRUCTIONS PERTAINING TO THE USER  
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3.2 SETTING THE TIME  
a) Press either of the  
keys to access the programming function;  
the display will show the letter P followed by a number (program line);  
Figure 3  
b) Press the  
keys until the display shows P1, referring to the time to be set;  
c) Press the  
keys to set the time; on the display, the letter P will start to flash;  
key to save and exit the programming function;  
d) Press the  
3.3 SETTING THE MAXIMUM CENTRAL HEATING TEMPERATURE  
- Press the  
- Press the  
key (2-figure 1) to set the central heating water temperature;  
keys to set the temperature required;  
- Press either of the  
keys (1 or 10 - figure 1) to save and return to the main menu.  
N.B – With the outdoor sensor connected, the  
key (2 - figure 1) can be used to shift the central heating  
curve. Press the keys to decrease or increase the room temperature in the premises to be heated.  
3.4 SETTING THE MAXIMUM HOT WATER TEMPERATURE  
- Press the  
- Press the  
key (3-figure 1) to set the maximum hot water temperature;  
keys to set the temperature required;  
- Press either of the  
keys (1 or 10 - figure 1) to save and return to the main menu.  
INSTRUCTIONS PERTAINING TO THE USER  
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3.5 SETTING THE DAILY PROGRAM FOR OPERATION IN CENTRAL HEATING AND DOMESTIC HOT WATER MODES  
3.5.1 Setting the daily times for central heating mode operation  
- Press either of the  
keys to access the programming function;  
a) Press these keys until the display shows P11, referring to the program start time;  
b) Press the  
keys to set the time;  
- Press the  
key; the display will show P12, referring to the program end time;  
- Repeat the operations described in points a and b until the third and last cycle is reached (program line  
P16);  
- Press the  
key to save and exit from the programming function.  
3.5.2 Setting the daily times for domestic hot water mode operation  
- As supplied by the factory the appliance is set up with the hot water function always enabled and the do-  
mestic hot water programming function disabled.  
The instructions for enabling this program are given in chapter 17, which is addressed specifically to installers  
(parameter H91).  
If the program is enabled program lines from 31 to 36 must be set up as described in heading 3-5.1.  
3.6 SETTING THE MINIMUM CENTRAL HEATING TEMPERATURE  
- Press either of the  
keys to access the programming function;  
- Press these keys until the display shows p5, referring to the temperature to be set;  
- Press the keys to set the temperature required.  
This operating mode is enabled when minimum temperature central heating mode “ ” is activated or when  
the daily central heating program does not require heat.  
N.B With the outdoor sensor connected, parameter P5 can be used to set the minimum room tempe-  
rature in the premises to be heated (night setback).  
INSTRUCTIONS PERTAINING TO THE USER  
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3.7 TABLE FOR USER-SETTABLE PARAMETERS  
Parameter  
N.  
Factory  
setting  
Parameter description  
Range  
P1  
Time of day setting  
———-  
25  
0…23:59  
P5  
Minimum central heating temperature setting (°C)  
Start of first daily period of automatic central heating  
End of first daily period of automatic central heating  
Start of second daily period of automatic central heating  
End of second daily period of automatic central heating  
Start of third daily period of automatic heating  
End of third daily period of automatic central heating  
Start of first daily period of hot water production (*)  
End of first daily period of hot water production (*)  
Start of second daily period of hot water production (*)  
End of second daily period of hot water production (*)  
Start of third daily period of hot water production (*)  
End of third daily period of hot water production (*)  
25..80  
P11  
P12  
P13  
P14  
P15  
P16  
P31  
P32  
P33  
P34  
P35  
P36  
6:00  
22:00  
0:00  
0:00  
0:00  
0:00  
0:00  
24:00  
0:00  
0:00  
0:00  
0:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
00:00…24:00  
Reset of daily central heating and domestic hot water production programs (factory  
settings). Press the - + keys together for about 3 seconds; the number 1 appears on the  
P45  
0
0...1  
display. Confirm by pressing either of the  
keys  
Note: Parameters from P31 to P36 can be displayed only if the domestic hot water program has been enabled  
as described in chapter 17 for the attention of the installer (parameter H91).  
3.8 FAULT WARNINGS AND RESETTING THE BOILER  
If a fault occurs, a flashing warning code appears  
on the display.  
The fault warnings appear on the main display (figure  
1 a) together with the  
symbol (Figure 4).  
To reset, press the reset  
seconds.  
button for at least two  
Figure 4  
Fault warnings appear on the secondary display  
(figure 1 b) alternating with the time, both of them  
flashing (figure 4.1). It is not possible to reset mal-  
function warnings which appear on the secondary  
display as the cause of the alarm has first to be  
removed.  
Fi
INSTRUCTIONS PERTAINING TO THE USER  
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3.9 FAULT WARNINGS TABLE  
Fault code  
E10  
Fault description  
action required  
outdoor temperature probe sensor failure  
ntc output sensor failure  
call the authorised service centre.  
call the authorised service centre  
call the authorised service centre  
call the authorised service centre  
E20  
E40  
NTC return heating probe faulty  
domestic hot water ntc sensor failure  
E50  
Safety or fumes thermostat or heating return  
temperature probe tripped  
press the reset key (for about 2 seconds: if this device is triggered  
repeatedly, call the authorised service centre)  
E110  
E111  
E128  
Delivery temperature higher than 95°C  
If this fault persists, call the authorised service centre  
Loss of flame during operation (the ionization current  
has fallen below the limit)  
Call an authorised service centre.  
E129  
E132  
Minimum fan speed limit is hurt  
floor thermostat tripped  
Call an authorised service centre.  
call the authorised service centre  
press the reset key (for about 2 seconds); if the fault persists,  
call the authorised service centre)  
E133  
no gas  
Press the reset button if the display presents the (  
) symbol,  
otherwise switch off the boiler at the mains and switch it on again  
after 10 seconds. If the fault persists, call an authorised service  
centre. Check the position of the ignition electrodes (chapter 17).  
E151  
boiler circuit board error  
E153  
E154  
E160  
the reset key has been pressed inappropriately  
No circulation or reverse flow  
press the key again (about 2 seconds)  
call the authorised service centre  
call the authorised service centre.  
fan speed threshold not reached  
check that the system is at the rated pressure. (refer to the  
section on filling the system). if the fault persists, call the  
authorised service centre.  
E164  
no hydraulic pressure switch enabling signal  
All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displa-  
yed is the one with highest priority. After the cause of the first fault has been removed, the second one will  
be displayed, and so on.  
If any given fault occurs frequently, contact the authorised Service Centre.  
INSTRUCTIONS PERTAINING TO THE USER  
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4. FILLING THE BOILER  
Important: Regularly check that the pressure displayed by the pressure gauge is between 1 to 4 bar, with the  
boiler not operating.  
In case the pressure is lower open the boiler filling tap.  
We recommend you open the tap very slowly in order to let off the air.  
In case pressure drops occur frequently have the boiler checked by a Qualified Service Engineer.  
5. TURNING OFF THE BOILER  
To shut down the boiler switch off the electrical supply to the appliance.  
6. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION  
We recommend you avoid draining the whole system as raw water makeup will lead to harmful limestone  
deposits inside the boiler and on the heating elements.  
In case the boiler is not operated during wintertime and is therefore exposed to danger of frost we suggest you  
add some specific-purpose anti-freeze to the water contained in the system (e.g.: propylene glycole coupled  
with corrosion and scaling inhibitors).  
The electronic management of the boilers includes a ‘frost protection’ function which operates the burner to  
reach a heating flow temperature of 30° C when the system heating flow temperature drops below 5°C.  
The frost protection function is enabled if:  
* electrical supply to the boiler is on;  
* the gas service cock is open;  
* the system pressure is as required;  
* the boiler is not isolated.  
7. SERVICING INSTRUCTIONS AND GAS CHANGE  
To maintain efficient and safe operation of your boiler have it checked by a Qualified Service Engineer at the  
end of every heating season. Careful servicing will ensure economical operation of the system.  
Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily flammable cleaners  
(i.e.: gasoline, alcohol, and so on). Always isolate the electrical supply to the appliance before cleaning it (see  
section 5 Turning off the boiler).  
These boilers are produced for natural gas and can be converted to work with LPG (G 31).  
Any gas change must be effected by a Qualified Service Engineer.  
INSTRUCTIONS PERTAINING TO THE USER  
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8. GENERAL INFORMATION  
The following remarks and instructions are addressed to Service Engineers to help them carry out a faultless  
installation. Instructions regarding lighting and operation of the boiler are contained in the ‘Instructions per-  
taining to the user’ section.  
Note that installation, maintenance and operation of the gas appliances must be performed exclusively by  
qualified personnel in compliance with current standards.  
Please note the following:  
* This boiler can be connected to any type of double- or single feeding pipe convector plates, radiators,  
thermoconvectors. Design the system sections as usual though taking into account the available output /  
pump head performances.  
* Do not leave any packaging components (plastic bags, polystyrene, etc.) within children’s reach as they are  
a potential source of danger.  
* Initial lighting of the boiler must be effected by a Qualified Service Engineer.  
Failure to observe the above will render the warranty null and void.  
9. INSTRUCTIONS PRIOR TO INSTALLATION  
This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler  
must be connected to a central heating system and, on models with this option, to a domestic hot water supply  
system in compliance with its performances and output criteria.  
IMPORTANT! The gas boiler is supplied without the following components which must be provided exclusively  
by qualified personnel:  
• Expansion vessel;  
• Pressure relief valve;  
• Circulating pump;  
• Boiler filling tap.  
Before connecting the boiler ensure the following operations have been completed:  
a) Check that the boiler is fit for operation with the type of gas available. For more details see the notice on  
the packaging and the label on the appliance itself.  
b) Check that the flue terminal draft is appropriate; that the terminal is not obstructed and that no other applian-  
ce exhaust gases are expelled through the same flue duct, unless the flue is especially designed to collect  
the exhaust gas coming from more than one appliance, in conformity with the standards and regulations in  
force.  
c) Check that, in case the flue has been connected to pre-existing flue ducts, thorough cleaning has been  
carried out in that residual combustion products may be created during operation of the boiler and obstruct  
the flue duct.  
To ensure correct operation of the appliance and avoid invalidating the warranty, observe the following  
precautions:  
1. Hot water circuit:  
If the water hardness is greater than 20 °F (1 °F = 10 mg calcium carbonate per litre of water) a  
polyphosphate or comparable treatment system responding to current regulations must be used.  
2. Heating circuit  
2.1.New system  
Before proceeding with installation of the boiler, the system must be cleaned and flushed out thoroughly  
to eliminate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary products.  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non  
alkaline. The recommended products for cleaning are:  
SENTINEL X300 or X400 and FERNOX heating circuit restore. Please ensure to use this product  
proceeding strictly in accordance with the manufacturers instructions. Finally fill the system with the  
correct strength of central heating inhibitor.  
2.2. Existing system  
Before proceeding with installation of the boiler, the system must be cleaned and flushed out to remove  
sludge and contaminants, using suitable proprietary products as described in section 2.1.  
To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-  
alkaline such us SENTINEL X100 and FERNOX heating circuit protective. To use this product proceeding  
strictly in accordance with the maker’s directions.  
Remember that the presence of foreign matter in the heating system can adversely affect the operation  
of the boiler (e.g. overheating and noisy operation of the heat exchanger). Dose with inhibitor.  
Failure to observe the above will render the guarantee null and void.  
10. BOILER INSTALLATION  
Decide upon the boiler location, then tape the template on the wall.  
Connect the pipework to the gas and water inlets prearranged on the template lower bar.  
If you are either installing the boiler on a pre-existing system or replacing it, we suggest you also fit strainers  
on the system return pipework to the boiler to collect the deposits and scaling which may remain and be  
circulated in the system after the initial filling.  
When the boiler is fixed on the template connect the flue and air ducts (fittings supplied by the manufacturer)  
according to the instructions given in the following relevant sections.  
Connect the condensate outlet to the siphon supplied with the boiler. Connect the siphon to a drain, making  
sure there is a continuous slope. Horizontal sections must be avoided.  
DRILL HOLES WITH A Ø12 BIT, FIT THE MASONRY  
PLUGS AND THE SCREWS PROVIDED  
N.B. INCLUDE CONDENSATE DRAIN POINT  
BOILER WIDTH 600  
MR: G 1” heating flow  
GAS: G 3/4” gas inlet to the boiler  
RR: G 1” heating return  
SC: condensation drain 22 mm  
Figure 5  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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11. BOILER SIZE  
Figure 6  
12. INSTALLATION OF FLUE AND AIR DUCTS  
We guarantee ease and flexibility of installation for the boiler thanks to the fittings and fixtures supplied (de-  
scribed below).  
The boiler is especially designed for connection to an exhaust flue / air ducting, with either concentric, vertical  
or horizontal terminal.  
Where exhaust and intake flues not  
supplied by POTTERTON GOLD HIGH  
OUTPUT have been installed, these  
must be certified for the type of use  
and must have a maximum pressure  
drop of 100 Pa for the complete flue  
installation.  
C33  
C13  
0709_1001  
Figure 7  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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HORIZONTAL CONCENTRIC FLUES  
Number of Bends 90°  
Boiler  
Flue Size  
1
2
3
4
WH46  
WH65  
Ø80/125  
Ø80/125  
9 m  
9 m  
8 m  
8 m  
7 m  
7 m  
6 m  
6 m  
VERTICAL CONCENTRIC FLUES  
Number of Bends 90°  
Boiler  
Flue Size  
1
2
3
4
WH46  
WH65  
Ø80/125  
Ø80/125  
9 m  
9 m  
8 m  
8 m  
7 m  
7 m  
6 m  
6 m  
CONVENTIONAL FLUE  
Number of Bends 90°  
Boiler  
Flue Size  
1
2
3
4
WH46  
WH65  
Ø80  
Ø80  
59,5 m  
59,5 m  
59 m  
59 m  
58,5 m  
58,5 m  
58 m  
58 m  
Concentric flue  
This type of duct allows to emit exhaust gases and to draw combustion air from outside the building.  
The 87° coaxial bend allows to connect the boiler to a flue-air duct in any direction as it can rotate through  
360°.  
If the flue outlet is placed outside, the flue-air ducting must protrude at least 18mm out of the wall to allow  
alluminium weathering tile to be fitted and sealed to avoid water leakages. If the terminal is below 2m then a  
terminal gaurd is required.  
Ensure a minimum downward slope of 3° towards the boiler.  
A 87° bend reduces the total flue length by 1 metre.  
A 45° bend reduces the total flue length by 0.5 metre.  
Concentric o
Figure 8  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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12.1 HORIZONTAL FLUE TERMINAL Ø 80/125 INSTALLATION OPTIONS  
L = refer to table  
12.2 VERTICAL FLUE TERMINAL Ø 80/125 mm INSTALLATION OPTIONS  
This type of installation can be carried out both on a flat or pitched roof by fitting a terminal, an appropriate  
weathering tile and sleeve, (supplementary fittings supplied as options).  
L = refer also the table  
L max = 10 m  
L max = 10 m  
L max = 8 m  
L max = 9 m  
12.5 FAN RPM UPDATING DEPENDING ON FLUE LENGTH (e.g. figure 7)  
To ensure the correct rated heat output to the maximum and minimum heat input, it is necessary to update  
the speed (rpm) of the fan, it depends on the length of the flue (par. 12), in accordance with the installation of  
flue and air pipes as indicated in the tables below. The factory-set value is referred to the minimum length of  
flue pipe (0÷4 m for concentric, 0÷20 m for twin). To carry such updating, changing the speed of the fan (rpm)  
at the maximum and minimum heat input, refer to par. 16.  
WH 65  
WH 46  
CONCENTRIC PIPE Ø 80/125  
(C13-C33-C43)  
CONCENTRIC PIPE Ø 80/125  
(C13-C33-C43)  
Parametres  
H536-H613  
Parametres  
H612  
Parametres  
H536-H613  
Parametres  
H612  
Pipes length (m)  
Pipes length (m)  
Max heat output (rpm) Min heat output (rpm)  
Max heat output (rpm) Min heat output (rpm)  
(*) 0 - 4  
5 - 10  
(*) 0 - 4  
5 - 10  
5500  
5900  
1900  
2100  
6000  
6500  
1850  
2100  
(*) Default setting parameters  
(*) Default setting parameters  
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13. HYDRAULIC DIAGRAM  
Applications and Installation Details  
13.1 HYDRAULIC SYSTEM 1  
(Pumped heating circuits with remote control QAA73 or Room Thermostat, including hot-water tank, without  
and with primary loop)  
(*)  
(*) optional extra  
without low loss header  
Figure 9a  
(*)  
(*)  
(*)  
(*) optional extra  
(*)  
with low loss header and primary loop  
Figure 9b  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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TS: Tank Sensor (QAZ36)*  
B3: Room Control Module (QAA73)*  
B1: Room Thermostat  
B9: Outdoor Temperature Sensor (QAC34)*  
P1: Heating Pump  
PDHW: Hot Water pump  
PLP: Primary Pump (only for figure 9b)  
(*) Available Optional Extra  
Pumps (Not Supplied)  
Isolating Valve (Not Supplied)  
Installer Wiring --------------  
Hot Water Cylinder (Not Supplied)  
Low Loss Header (Not Supplied)  
Non return valve (Not supplied)  
Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 14):  
WITH QAA73  
WITH  
REMOTE CONTROL  
ROOM THERMOSTAT  
APPLICATION  
TERMINAL BOARD  
M1: A – B  
TERMINAL BOARD  
M1: A – B  
M3: 13 – 14  
M3: 11 – 12  
M2: 7 – 8  
PRIMARY PUMP PLP (only for figure 9b)  
DHW PUMP PDHW  
M3: 13 – 14  
M3: 11 – 12  
M2: 7 – 8  
HEATING PUMP P1  
DHW SENSOR TS  
REMOTE CONTROL QAA73  
ROOM THERMOSTAT  
M2: 1 – 2  
NO  
M2: 3 – 4 OPEN  
M2: 3 – 4  
Parameter changes requires (see also section 16):  
PCB  
Description  
PARAMETER  
Setting Parameter  
H552  
H553  
H615  
H632  
Hydraulic system  
KonfigHKS  
H552 = 2  
H553 = 21  
KonfigAusgang  
Wanfo Q8  
H615 = 9  
H632 = 00001100  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
17  
13.2 HYDRAULIC SYSTEM 2  
(Pumped heating circuits with Room Thermostat and compensated circuit with remote control QAA73, inclu-  
ding hot-water tank, with primary loop)  
TS:Tank Sensor (QAZ36)*  
B3: Room Control Module (QAA73)*  
B1: Room Thermostat  
B9: Temperature Sensor (QAC34)*  
Zone Controller (Clip-in AGU2.500)*  
FS: Flow Sensor (QAD36: supplied with AGU2.500)*  
P1: Heating Pump  
P DHW: Hot Water pump  
PLP: Primary Pump  
3WV: 3-way Valve (power open / power close)  
(*) Available Optional Extra  
Pumps (Not Supplied)  
Isolating Valve (Not Supplied)  
Installer Wiring --------------  
Hot Water Cylinder (Not Supplied)  
Low Loss Header (Not Supplied)  
Non Return Valve (Not supplied)  
*
*
*
HEATING CIRCUIT  
COSTANT TEMP.  
HEATING CIRCUIT  
VARIABLE TEMP.  
AGU 2.500*  
*
Figure 10  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
18  
Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 14):  
APPLICATION  
TERMINAL BOARD  
M1: A – B  
PRIMARY PUMP PLP  
DHW PUMP PDHW  
M3: 13 – 14  
HEATING PUMP P1  
DHW SENSOR TS  
M3: 11 – 12  
M2: 7 – 8  
REMOTE CONTROL QAA73 (LOW TEMPERATURE)  
ROOM THERMOSTAT  
HEATING PUMP P2  
3 WAY VALVE  
M2: 1 – 2  
M2: 3 – 4  
CLIP IN AGU 2.500  
CLIP IN AGU 2.500  
CLIP IN AGU 2.500  
FLOW SENSOR  
Parameter changes requires (see also section 16):  
PCB  
Description  
PARAMETER  
Setting Parameter  
H552  
H553  
H615  
H632  
Hydraulic system  
KonfigHKS  
H552 = 50  
H553 = 12  
KonfigAusgang  
Wanfo Q8  
H615 = 9  
H632 = 00001111  
13.3 HEAT EXCHANGER PRESSURE DROP  
Hydraulic Resistance and Water Flow Rates  
Boiler  
11°C ∆T  
kPa  
15°C ∆T  
kPa  
20°C ∆T  
kPa  
30°C ∆T  
kPa  
Lit/sec  
0,98  
Lit/sec  
0,72  
Lit/sec  
0,54  
Lit/sec  
0,36  
WH46  
WH65  
70,61  
56,88  
31,38  
34,32  
11,77  
20,59  
10,79  
11,77  
1,41  
1,04  
0,78  
0,52  
Minimum Water Flow Rates  
Boiler  
Lit/sec  
0,28  
WH46  
WH65  
0,35  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
19  
14. CONNECTING THE MAINS SUPPLY  
Electrical safety of the appliance is only guaranteed by correct earthing, in compliance with the applicable  
standards and regulations.  
Connect the boiler to a 230V earthed power supply by means of the three-pin cable supplied ensure that the  
polarity is correct.  
Use a double-pole switch isolator with a contact separation of at least 3mm in both poles.  
In case you replace the power supply cable fit a HAR H05 VV-F’ 3x0.75mm2 cable with an 8mm diameter  
maximum outer sheath.  
The fuse, a fast-acting type rated 2A, is incorporated into the power supply terminals (remove the black fuse  
holder to enable inspection and/or replacement).  
IMPORTANT: Check that the overall current drawn by accessories connected to the appliance is less than 1  
amp. If the value is greater, a relay must be wired between the boiler control circuit board and the accessories  
drawing the higher current.  
Terminal board M1  
Terminal board M2  
Cover  
Cover  
Figure 11  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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14.1 CONNECTING THE PUMPS  
Turn the control box downward to access terminal boards M1 and M3 used for the electrical connections by  
removing the protective covers (see figure 12).  
Terminals M1 a – b: connection of the primary loop pump for the heating system (PLP)  
Check the correct size and rating of the pump by referring to its hydraulic resistance table.  
Terminals M3 11 – 12: connection for heating pump (P1)  
Terminals M3 13 – 14: connection for hot water tank pump (PDHW)  
The electrical specifications of the pump must be as follows:  
230 V AC; 50 Hz; 1 A max; cos f > 0.8.  
If the specifications of the installed pump are different, a relay must be wired between the boiler control circuit  
board and the pump.  
It is advisable not to adopt any electrical connection other than those described.  
Connect
Figure 12  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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14.2 CONNECTING THE HOT WATER TANK SENSOR  
Remove the resistor from terminals 9-10 of terminal strip M2 (figure 13), and connect the hot water priority  
NTC sensor, which is supplied as an accessory.  
The sensing element of the NTC device must be located in the recess provided on the storage tank (figure 13).  
The temperature and on-off programming of the domestic hot water supply are selected directly from the  
boiler control panel, as described in this manual under the user instruction headings.  
SAFETY  
CONTACT  
ROOM THERMOSTAT  
Figure 13  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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14.3 DESCRIPTION OF THE ELECTRICAL CONNECTIONS TO THE BOILER  
Turn the control box downward to access terminal board M2 used for the electrical connections by removing  
the protective cover (see figure 13).  
Terminals 1-2: connection of SIEMENS model QAA73 room temperature regulator supplied as optional extra.  
Connection polarity is irrelevant.  
The link fitted across the “TA” terminals 3-4 must be removed.  
Read the instructions supplied with this accessory for correct installation and programming procedures.  
Terminals 3-4: TA” room temperature thermostat connection. Thermostats with integral accelerator resistor  
must not be used. Check that there is no voltage across the ends of the two thermostat connection wires.  
Terminals 5-6: external safety contact (low voltage).  
Terminals 7-8: connection of SIEMENS model QAC34 outdoor temperature sensor supplied as optional extra.  
Read the instructions supplied with this accessory for correct installation procedures.  
Terminals 9-10: connection of hot water temperature sensor supplied as optional extra for connecting hea-  
ting-only boilers to an external water heater.  
CLIP-IN AGU 2.511  
Terminals 3-4 L-N OUT: connection to signal lamp (230 V - 0,5 A max) for lockout alarm.  
Terminals 5-6 L-N OUT: connection to signal lamp (230 V - 0,5 A max) for run mode.  
For low voltage signal lamp remove the internal wiring and feed with an external low voltage power supply.  
(OPTIONAL EXTRA)  
Figure 14  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
23  
14.4 CONNECTING THE QAA73 TEMPERATURE REGULATOR  
The SIEMENS model QAA73 room temperature regulator, if required (optional extra) must be connected to  
terminals 1-2 of terminal board M2 in figure 13.  
The link across terminals 3-4, provided for connection of a room temperature thermostat, must be removed.  
The settings of the domestic hot water temperature and domestic hot water production schedule must be  
made using this device.  
The timed program of the central heating circuit must be set on the QAA73 if there is a single zone, or in relation  
to the zone controlled by the QAA73 device.  
The timed program for the central heating circuit of the other zones can be set directly on the boiler control  
panel.  
See the instructions provided with the QAA73 room temperature regulator for the user parameter programming  
procedure.  
IMPORTANT: For systems divided into zones, parameter 80 “HC2 curve”, which can be set on the QAA73  
temperature regulator, must be set as _ _ . _ “not active”.  
QAA73: parameters which can be set by the installation engineer (service)  
By pressing the two PROG buttons together for at least three seconds it is possible to access the list of pa-  
rameters that the installer can display and/or set.  
Press either of these buttons to change the parameter to display or change.  
Press the [+] or [-] key to change the value displayed.  
Press either of the PROG buttons again to save the change.  
Press the information button (i) to quit programming.  
Here follows a list of the most commonly used parameters:  
Line no. Parameter  
Range  
Default value  
15  
70  
HC1 curve  
2.5…40  
Selection of central heating circuit temperature curve “kt”  
72  
HC1 max. output  
25…85  
85  
Central heating system maximum output temperature  
74  
75  
Type of building  
Light, Heavy  
on HC1  
Light  
Room compensation  
On HC1  
Activation/deactivation of the influence of the room temperature. If it is deactivated, the outdoor on HC2  
temperature sensor must be installed.  
on HC1+HC2  
nil  
77  
78  
Automatic adaptation of the temperature curve “kt” in relation to the room temperature.  
On - off  
0…360 min  
On  
0
Opt Start Max  
Maximum time the boiler is switched on ahead of the timed program to optimise the temperature  
in the premises.  
79  
Opt Stop Max  
0…360 min  
0
Maximum time the boiler is switched off ahead of the timed program to optimise the temperature  
in the premises.  
80  
90  
91  
HC2 curve  
2.5…40  
—.- = not active  
—.-  
DHW Red Setp  
Minimum temperature of the domestic hot water  
10 or 35…58  
10  
DHW program  
24 h/day  
24 h/day  
Selection of the type of timed program for domestic hot water.  
TSP HC-1h  
TSP HC  
TSP DHW  
24 h/day  
= always on  
PROG HC-1h  
PROG HC  
PROG DHW  
= as HC1 central heating program less one hour  
= as central heating program  
= specific domestic hot water program (see also program lines 30-36)  
- fault messages  
In the event of fault, the display panel on the QAA73 shows the flashing symbol . Press the information key  
( ) to display the error code and a description of the fault (see Fault warning tables on paragraph 3.9).  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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14.5 CONNECTING THE OUTDOOR TEMPERATURE SENSOR  
The SIEMENS model QAC34 outdoor temperature sensor (optional extra) for weather compensation must be  
connected to terminals 7-8 of terminal board M2 in figure 13.  
The procedures for setting the gradient of the temperature curve “kt” vary depending on the accessories  
connected to the boiler.  
a) Without QAA73 room temperature regulator:  
The temperature curve “kt” must be selected by setting parameter H532 as described in section 16 “setting  
the boiler parameters”.  
See graph 2 for selecting the curve referred to a room temperature of 20°C.  
The chosen curve can be shifted by pressing the  
(2), button (2) on the boiler control panel, and modifying  
keys. See graph 3 for curve selection. (The example show  
the value displayed by pressing the  
in graph 3 refers to the curve Kt=15).  
and  
Increase the value displayed if the room temperature required is not reached inside the premises for central  
heating.  
TM = Flow temperature  
Te = Composite outside temperature  
Sth = Kt Curve  
Graph 2  
Graph 3  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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b) With QAA73 room temperature regulator:  
The temperature curve “kt” must be selected by setting parameter 70 “HC1 curve” of the QAA73 room tem-  
perature control device as described in section 14.4 “QAA73: parameters which can be set by the installation  
engineer (service)”.  
See graph 4 for selecting the curve referred to a room temperature of 20°C.  
The curve is shifted automatically on the basis of the room temperature set using the QAA73 climate con-  
trol.  
If the system is divided into zones, the temperature curve “kt” relating to the part of the system not control-  
led by the QAA73 must be selected by setting parameter H532 as described in section 16 “setting the boiler  
parameters”.  
IMPORTANT: For systems divided into zones, parameter 80 “HC2 curve”, which can be set on the QAA73  
room temperature regulator, must be set as _ _ . _ “not active” (see section 14.4).  
TM = Flow temperature  
Te = Composite outside temperature  
Graph 4  
c) With AGU2.500 for control of a low temperature system:  
Refer to the instructions provided with the AGU2.500 accessories for connection and control of a low tem-  
perature zone.  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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15. GAS VALVE ADJUSTMENT  
Carry out the following operations in the given sequence:  
1) Calibration of the maximum heat output. Check that the CO2 measured on the flue, with the boiler operating  
at the maximum heat output, is the same as that shown in table 1. Otherwise, turn the regulation screw (V) on  
the gas valve. Turn the screw clockwise to reduce the concentration of CO2 and anticlockwise to increase it.  
2) Calibration of reduced heat output. Check that the CO2 measured on the flue, with the boiler operating at the  
minimum heat output, is the same as that shown in table 1. Otherwise, turn the offset regulation screw (K) on  
the gas valve. Turn the screw clockwise to increase the concentration of CO2 and anticlockwise to reduce it.  
Pi:  
Gas supply pressure connection point  
P out: Gas pressure to burner connection point  
P:  
Pressure connection point  
for measurement of the OFFSET  
Air signal input from fan  
Pl:  
V:  
Gas flow adjuster screw max fire  
OFFSET adjuster screw min fire  
K:  
Figure 15  
To simplify calibration of the gas valve, the “calibration function” can be set directly on the boiler control panel  
by proceeding as follows:  
1) Press the  
keys (2-3) together until the display shows the pointer “ ” alongside the and symbols  
(about 6 seconds) (see fig. 16).  
2) Press the  
keys to set the fan speed at the minimum and maximum heat output (%PWM);  
N.b - to set the minimum and maximum heat output quickly, press the  
keys respectively;  
3) press either of the two  
keys to exit the function.  
Figure 16  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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IMPORTANT: in the case of conversion from natural gas to propane (LPG), the following operations must be  
performed before calibrating the gas valve as illustrated previously:  
Turn adjuster screw (V) on the gas valve through the number of complete revolutions specified in table 3.  
G20 - 2H - 20 mbar  
8.7 %  
G31 - 3P - 37 mbar  
10 %  
CO2 max. heat output  
CO2 min. heat output  
8.4 %  
9.8 %  
Table 1  
Gas consumption at 15 °C  
1013 mbar  
WH 46  
WH 65  
gas G20 - 2H - 20 mbar  
PCI (MJ/Kg) NET  
34.02  
34.02  
7.08  
2.11  
---  
Consumption at max. heat output (Kg/h)  
Consumption at min. heat output (Kg/h)  
Gas nozzle (mm)  
4.91  
1.58  
8.5  
Table 2  
Gas consumption at 15 °C  
1013 mbar  
WH 46  
WH 65  
gas G31 - 3P - 37 mbar  
PCI (MJ/Kg) NET  
46.34  
3.60  
1.16  
8.5  
46.34  
5.20  
1.55  
---  
Consumption at max. heat output (Kg/h)  
Consumption at min. heat output (Kg/h)  
Gas nozzle (mm)  
Table 2.1  
Model  
Counter clockwise  
turns of screw  
(V)  
WH 46  
WH 65  
3
4 3/4  
Table 3  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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16. SETTING THE BOILER PARAMETERS  
The boiler parameters may only be modified by professionally qualified staff proceeding as follows:  
a) Press the  
the display;  
b) Press the  
, keys on the boiler’s front panel together for about 3 s until the parameter H90 appears on  
keys to select the parameter for modification;  
c) Press the and keys to modify the parameter;  
d) Press the key to exit the programming function.  
The following are the parameters generally used:  
N° parametro  
H90  
Description  
Factory setting  
Setting for domestic hot water reduced temperature (°C)  
10  
D.H.W. (Domestic Hot Water) program  
(0 = enabled; 1 = disabled)  
H91  
1
Maximum temperature (°C) of the central heating circuit HC1 corresponding to:  
-
-
the main circuit in systems with just one zone;  
the circuit of the zone where the QAA73 temperature control device is installed in case of  
systems with more than one high-temperature zone;  
the high temperature zone circuit in mixed systems and if the SIEMENS AGU2.500 accessory  
is used.  
H505  
80  
-
Maximum temperature (°C) of the central heating circuit HC2 of a system with more than one  
zone, corresponding to the circuit of the low-temperature zone if the SIEMENS AGU2.500  
accessory is used.  
H507  
80  
H516  
H532  
Automatic Summer / Winter switching temperature (°C).  
20  
15  
15  
Selection of temperature curve of central heating circuit HC1 (see Graph 1)  
Selection of temperature curve of central heating circuit HC2 (see Graph 1)  
Maximum speed at maximum output in heating mode (rpm - maximum speed limitation)  
Setting value of required speed (rpm) at low-fire  
H533  
H536  
H612  
Refer to  
paragraph 12.1  
H536-H613  
H541-H610  
H544  
Setting value of required speed (rpm) at high-fire heating / domestic hot water mode  
PWM (%) setting: maximum output in heating / domestic hot water mode  
Pump post-circulation time in central heating mode (min)  
10  
H545  
Burner operating pause time between two start-ups (s)  
180  
Hydraulic system setting (see instructions provided with the SIEMENS AGU2.500 accessory).  
H552 = 50 with AGU2.500  
H552 = 80 with RVA 47  
H552  
2
Configuration of heating circuits  
H553 = 12 with AGU2.500  
H553  
H615  
21  
9
Programmable function  
Configuration of system with low loss header P1  
H632 = 00001111 with AGU2.500  
H632 = 00001000 with storage tank without low loss header  
H632  
00001100  
The value of Bit could be 1 or 0.  
Press the keys 5 and 6 to select the bit to modify (b0 is the bit on the right, b7 is the last bit  
on the left).  
To modify the Bit value press on the keys 7 and 8  
H641  
H657  
Fan post-purge interval (s)  
10  
0
Setpoint of autonomous ANTILEGIONELLA function  
60...80 °C = setting temperature range  
0 = function inactive  
Table 4  
If the electronic circuit board is replaced, make sure that the parameters set are those specific to the boiler  
model, as indicated in the documentation available from the authorised Service Centre.  
(*) For these parameters see section 13 (hydraulic system).  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
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17. CONTROL AND OPERATION DEVICES  
The boiler has been designed in full compliance with European reference standards and in particular is equip-  
ped with the following  
• Overheat thermostat  
This thermostat interrupts the gas flow to the main burner in case the water contained in the circuit has ove-  
rheated. Under these conditions the boiler locks out and can only repeat the ignition procedure by pressing  
of the reset button on the boiler after the cause of the trip has been rectified.  
It is forbidden to disable this safety device  
• Boiler circuit circulation test  
The boiler electronic management unit is fitted with a “boiler circulation test” function which involves con-  
tinuously checking the primary circuit delivery and return temperatures. In case of an irregular increase in  
the delivery and return temperature or a temperature reversal, the boiler stops and signals the error on the  
display (see error table).  
• Flue thermostat  
This device, positioned on the flue inside the boiler, interrupts the flow of gas to the burner if the temperature  
exceeds 90 °C. After verifying the cause of the trip, press the reset button positioned on the thermostat  
itself, then press the reset button on the boiler.  
It is forbidden to disable this safety device  
• Flame ionization detector  
The flame sensing electrode guarantees safety of operation in case of gas failure or incomplete interlighting  
of the main burner.  
Under such conditions the boiler is locked out.  
You must press the reset button on the boiler to restore the normal operating conditions.  
• Supplementary pump overrun  
After the burner has switched off due to a room thermostat intervention the preset pump overrun of the  
pump lasts 10 minutes, when the boiler is in the central heating mode.  
• Frost protection device  
The boilers electronic management includes a “frost protection” function in the central heating system which  
operates the burner to reach a heating flow temperature of 30°C when the system heating flow temperature  
drops below 5 °C.  
This function is enabled as long as the boiler is connected to the a.c. power supply gas supplies and the  
pressure in the system is as specified.  
• Pump-blocking prevention  
In case there is no call for heat either from the central heating system or from the DHW system for 24 hours  
on end the pump will automatically switch on for 10 seconds.  
• Gas pressure switch  
This device enables the main burner only to be switched on if the gas pressure is over 12 mbar.  
• Hydraulic pressure sensor  
This device enables the main burner only to be switched on if the system pressure is over 0.5 bar.  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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18. POSITIONING OF THE IGNITION AND FLAME SENSING ELECTRODE  
Figure 17  
19. CHECK OF COMBUSTION PARAMETERS  
To measure the performance of combustion products, the forced draught boiler models are equipped with two  
test points on the tapered coupling specifically designed for this purpose.  
One of the two test points is connected to the exhaust flue duct to allow measurements of the combustion  
products and efficiency.  
The second test point is connected to the comburant air inlet duct to check possible combustion products  
circulation in case of coaxial ducts.  
The exhaust flue duct test point allows measurements of the following:  
• combustion products temperature;  
• concentration of oxygen (O2) or, alternatively, of carbon dioxide (CO2);  
• concentration of carbon monoxide (CO).  
The comburant air temperature must be measured at the test point connected to the air inlet duct.  
flue gas  
combustion air  
gasket  
Figure 18  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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20. ACTIVATING THE CHIMNEY-SWEEP FUNCTION  
To facilitate measurement of the combustion efficiency and improve the cleanliness of the production products,  
the chimney sweep function can be activated by proceeding as described below:  
1) Press the  
(2-3) together until the pointer “ ” appears on the display alongside the symbol (about 3  
seconds but no more than 6 seconds). In these conditions, the boiler operates at the maximum heat output  
set for central heating.  
2) Press either of the  
buttons to exit the function.  
Figure 19  
21. ANNUAL SERVICE  
To ensure the boiler operates at peak efficiency, the following checks must be performed every year:  
• Check on the appearance and tightness of the gas and combustion circuit gaskets;  
• Check on the condition and position of the ignition and flame sensing electrodes (see section 18);  
• Check on the condition of the burner and its fixing to the aluminium flange;  
• Check for any dirt in the combustion chamber. Use a vacuum-cleaner for this cleaning operation,  
• Check if the syphon trap is dirty;  
• Check that the gas valve is calibrated correctly (see section 15);  
• Check on the central heating system pressure.  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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22. BOILER SCHEMATIC  
Figure 20  
Legend:  
1
2
Boiler drain point  
Manometer (water pressure gauge)  
3
4
5
6
Siphon (condensate)  
NTC delivery heating probe  
105°C overheat thermostat  
Gas valve  
7
Heat exchanger  
8
9
Flame detector electrode (ionisation probe)  
Main burner  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
Ignition electrode  
Air/gas mixture header  
Mixer with venturi  
Injector  
Fan  
Flue thermostat  
Flue spigot  
Automatic air vent  
Flue joint  
Hydraulic pressure sensor  
Pressure gas switch  
NTC return heating probe  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
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23. ILLUSTRATED WIRING DIAGRAM  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
34  
24. TECHNICAL DATA  
Boiler model WH  
WH 46  
WH 65  
II2H3P  
Category  
II2H3P  
46,4 - 51,5  
15 - 16,6  
45,0  
Nominal heat input (net/gross)  
Reduced heat input (net/gross)  
kW  
kW  
67,0 - 74,4  
20,0 - 22,2  
65,0  
kW  
Rated heat output 75/60°C  
Rated heat output 50/30°C  
Reduced heat output 75/60°C  
kcal/h  
kW  
38.700  
48,7  
55.900  
70,3  
kcal/h  
kW  
41.880  
14,5  
60.460  
19,3  
kcal/h  
kW  
12.470  
15,8  
15.820  
21,0  
Reduced heat output 50/30°C  
kcal/h  
13.588  
★★★★  
97,3 / 87,3  
105,1 / 94,5  
107,6  
18.060  
★★★★  
97,4 / 87,4  
105,2 / 94,5  
107,6  
Useful efficiency according to 92/42/CEE directive  
Useful efficiency max heat output 75/60 °C net/gross  
Useful efficiency max heat output 50/30 °C net/gross  
Useful efficiency 30% heat output  
Central heating system max. pressure  
Heating circuit temperature range  
Type  
%
%
%
bar  
4
4
°C  
25÷80  
25÷80  
C13 - C33 - C43 - C53 - C63 - C83 - B23  
Concentric flue duct diameter  
Concentric air duct diameter  
Twin-pipe flue duct diameter  
Twin-pipe air duct diameter  
Max. flue mass flow rate  
Min. flue mass flow rate  
mm  
mm  
mm  
mm  
kg/s  
kg/s  
°C  
80  
125  
80  
80  
125  
80  
80  
80  
0,022  
0,007  
74  
0,032  
0,010  
75  
Max. flue temperature  
NOx class  
5
5
NOx  
mg/kWh  
38,4  
G20/G31  
20  
37,7  
G20/G31  
20  
Type of gas used  
Natural gas pressure 2H  
Propane gas pressure 3P  
Gas Consumption (NG)  
mbar  
mbar  
m3/hr  
m3/hr  
Bar  
cm2  
cm2  
lit/sec  
kPa  
mm  
mm  
lit  
37  
37  
4,91  
1,89  
1
7,08  
2,74  
1
Gas Consumption (LPG)  
Minimum Operating Pressure  
High Level Ventilation to BS6644 boiler room  
Low Level Ventilation to BS6644 boiler room  
Water Flow at 20°C ∆t  
92,8  
185,6  
0,54  
11,7  
19  
134  
268  
0,78  
20,6  
25  
Hydraulic Resistance at 20°C ∆t  
Cold Feed Size to BS6644  
Safety valve size to BS6644 (open vent system)  
Water Content  
19  
19  
5,1  
6,5  
Maximum Flow Temperature  
Ventilation to BS5440  
°C  
85  
85  
cm2  
V
Power supply voltage  
230  
50  
230  
50  
Power supply frequency  
Rated power supply  
Hz  
W
75  
125  
72  
Net weight  
kg  
64  
Dimensions  
height  
width  
depth  
mm  
mm  
mm  
950  
600  
466  
IPX5D  
950  
600  
466  
IPX5D  
Protection-limit against humidity and water leakages (**)  
(**) according to EN 60529  
INSTRUCTIONS PERTAINING TO THE INSTALLER  
926.772.1 - GB/IE  
35  
POTTERTON GOLD HIGH OUTPUT, in its commitment to constantly improve its products, reserves the right to alter the  
specifications contained herein at any time and without previous warning. These Instructions are only meant to provide  
consumers with use information and under no circumstance should they be construed as a contract with a third party.  
Wood Lane  
Erdington  
Birmingham  
B24 9QP  
TELEPHONE  
FAX  
0845 0701058  
0845 0701059  
WEB  
POTTERTON GOLD HIGH OUTPUT  
Ed. 2 - 07/11  
code 926.772.1  

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