Baxi Slim HP User manual

1
Slim HPSlim HP
Slim HPSlim HP
Slim HP
Réf. : BAXI - 1373 - I - EN - 0 - 09 / 04
Installer instruction Set
Die cast high yield boiler
Ionisation and electronic ignition check
Fume safety thermostat
83 / 99 / 116 kW

2
Contents
1 General
2 General specifications
3 Installing the boiler
4 Installing the boiler
5 Maintenance
6 Refitting the heating unit (in case disassembly on site)
5 CC 170 control module

3
1 General
1.1 Description of the boiler
Theboilershaveaheatingbodyincastiron,anatmospheric
gasburnerwithdualratingtotal premixandelectronicignition
usingan intermittent pilot burner
Therange proposes 4powers, from 66 to 116kW.
These boilers are supplied with a control panel fitted with
either:
Theseboilersaredeliveredwithacontrolmodule
Theseboilersaredeliveredassembled
1.2 Directives and Standards
Theseboilersare CE certified incompliance with European
directives:
- EN656
- Gasdevices 90/396/CEE
- Yields 92/42
- Electromagneticcompatibility 89/336,
accordingto standards EN500 81-1, EN 50082-1
- Theboilers are type B11(B11BS proposed in option)
- Lowvoltage" 73/23
Designed to be used in a heating circuit with hot water at
maximumtemperature of 90 °Cand a pressureof 5
bar.
The installation and maintenance of the device must be
ensured by a qualified professional, in complance with
currentlyenforcedregulations and rulesofthe art.
1
3
GAS 2
4
5
N03891.DSF
BAXI waiveranyliabilityforany damagesresulting
from work not complying with this manual or
performed by non qualified persons.
1.3 Operating principle
Controlcycle
Uponcommissionning,the1st flapofthemaingasvalve(1)
opensandanignitor(2)ensurestheautomaticignitionofthe
ignitor burner (3) (intermittent pilot burner) with a flame
monitoredbyanionisingprobe,whichremainslitconstantly
duringthecommissionningofthemainburner(4).Thesetis
controlled by a contoller unit authorising the opening of the
mainvalve(1)andauxiliaryvalve(5)(for7and8elements).
Duringregulation,thesafetydevicesareself-checkedbefore
ignitionofthemainburner,byshortstoppageandrestarting
oftheignitionburner.
Operation:
- themainvalvehasareducedrating(1st rating),factoryset
to 60% nominal rating (2nd rating).
- theboiler’sthermostathastwostages(60%and2nd rating
100%)
- whentheboiler’stemperaturereachesthesetpoint ofthe
2nd rating,themainvalveswitchestoreducedrating.Ifthe
temperature reaches the setpoint of the 1st rating, the
thermostatstopstheburner’soperation.
- Thetemperaturedifferencebetweenthe1ststagesetpoint
and the 2nd setpoint is 10 °C.
The boilers are fitted to operate with natural gas
group G 20 - 20 mbar. For any gas change see
chapter 4.4.
BAXI certify compliance of all boilers mentioned in
this manual in reference to the appliances of the
correspondingtypes,havingtherightsofuseofthe
EC Marking according to the European Directives
for "Gas appliances" and "Boiler yields".

4
2 Generalcharacteristics
2.1 Characteristicsofthegas
N05439-EN.XLS
CE Nr
B11BS
kW 52.9 72 90 108 126
60% kW 31.7 43 54 64.8 75.6
kW 48.7 66.2 82.8 99.4 115.9
60% kW 29.2 39.7 49.7 59.6 69.5
45678
G20 5.7 7.6 9.5 11.4 13.3
G25 6.6 8.9 11.1 13.3 15.5
60%
100%
60%
100%
°C 135 128 134 148 125
% 55.9675
kg/h 154 191.4235.4243.2358.7
Flow rate
15°C 1013 mbar 4.2 5.6 7 8.4 9.8
60%
100%
Ø 0.3
Injector mark 215 Y
G31 Design rate (Qn)
Pressure at
injectors mbar 14.5
35
Fumes temperature
CO2
Fumes flow rate atdesign rate
Propane
gas 37
or 150
mbar
Øpilotburner injector
G25 Pressure at
injectors mbar 6
16.5
Injector mark 350 W
6
16.5
Injector mark 320W
7
Number ofburner injectors
Natural
gas
20,25 or
300 mbar
Øpilotburner injector Ø 0.5
Flow rate m3/h
15°C 1013 mbar Design rate (Qn)
G20 Pressure at
injectors mbar
3456
Design useful power
Low rate useful power
Number of elements
Number of burners
Type coffume duct B11
Design heatflow rate
Low rate heatrate
1312BS5053
Category II 2Esi 3P

5
2.2 Maindimensions
R Tapered outside threading
Rp Cylindrical inside threading
Service pressure: 5 bar
Power supply 230 V 50 Hz
Max operating temperature : 90 °C
N05496-EN.TBL
874
N05440-1.DSF
A
1004
D
143
243
485
807
60
Ø F
880
C
B
1190
45 51
263
874
Bleed tap
Ø 1/2
Inlet of
gas
Backflow
Outlet
Number elements 4 5 6 7 8
Sizes in mm
A 456 537 612 699
B 1080 1100 1160
C 965 975 1000
D 1003 1013
Ø F (outside) 182 202 252
Ø blackflow Rp 1" 1/4 Rp 1" 1/2
Ø outlet - inlet of gas R 1" 1/*4 R 1" 1/2
UP to Ut 15 in mbar 12 22 31 41 53
Liters 25 30 35 40 44
Weight 240 285 330 375 415

6
3.2 Hydraulicconnection
Connectiontotheheatingcircuitisperformedatthebackof
theheater.Connectingthefacilitytothewatermainsmustbe
performedaccordingtocurrentlyenforcedrulesoftheartand
regulations, and using a CB disconnector to fill the heating
circuit. For networks with a hardness exceeding TH 20, we
recommend installing a treatment system.
The boilers feature a modern design, their low momentum
enablesthemtoadapttoregulationdemandatanytime.With
a low water content, they require a clean circulation
water, imposing the following precautions before
connecting the boiler
- Newinstallation:Performawashing, then a rinsing, under
pressure.
- Old installation:Ask a specialist to perform a “descaling -
declogging”procedure,followedwithrinsing.
RECOMMENDATIONS:
Never fill a hot boiler with cold water. Sudden cooling
canresultinbreakagesduetothermalconstraintsinthe
cast iron block.
Connect the boiler by inserting on the backflow a
dynamic drip, adapted to the flow rate, with periodical
bleed setpoint.
IRRIGATIONOFTHEBOILER
Thefacilitymust be calculatedtoensureawaterflow inside
the boiler reaching a ∆T included between 10 and 20 K.
In case of a sudden interruption of the water flow,
the safety thermostat triggers total stoppage of
the boiler, and requires rearming.
The facility’s design must ensure sufficiently gradual
regulation to comply with the response times of the
thermostats.
F
01454
In this same room, storage of flammable products is
strictly forbidden.
Any partition sensitive to heat must be protected
using appropriate insulation.
3 Installing the boiler
3.1 Fitting the boiler
The boilers are designed to be installed without a base, on
the floor of the boiler room, provided it is flat, sturdy, dry
andincomustible.
Otherwise,refertothe base drawing below.
Never seal the boiler’s feet (free expansion).
Comply with the panel dimensions as the minimum space
aroundthe heater forconnecting the water and gas circuits
andformaintenance.
Heatingoutlet
Heating backflow
Gas inlet
Bleed tap
Number elements 5 6 7 8
F mm 364 445 526 607
Irons
optional
sealing
Rear
Front
300 700
N05442-1.DSF
200 100
N05441-1.DSF
N05443-1.DSF

7
01455-01
D
R
01304-01
R
D
01459-01
R
D
3.3 Hydraulic connection diagrams
IMPORTANT: The hydraulic connection diagram of each
installation must be determined together with the
correspondingregulation.
D Outlet facility
R Backflowfacility
Stopvalve
Valve rated at 4 bar max
Recommandedrecyclingpump
Muddrainvalve
Checkvalve
Expansiontank + pressure gauge - bleed
Boiler
Boiler
Outlet
Backflow
Outlet
Backflow
Outelet
Boiler
Backflow
Boiler
Outlet
Backflow
Boiler
Outlet
Backflow
Settingvalve
Decantationdripdynamic
3-channelvalve
Primarypump
SHWloadpump
SHWexchanger
Condenser
3.4 Gasconnection
Thegasconnectionisensuredontherearleftoftheheater.
3.5 Connection to chimney
- the draft hood includes a vertical female outlet duct to
which is connected the fume duct with the dimensions
indicated(seechapter«generalcharacteristics»).
- the calculation of the fume duct must comply with the
currentlyenforcedregulations.
- place the boiler in the boiler room, ensuring the burnt gas
path to the chimney is as short as possible. The vertical
section of the duct above the draft hood must be as long
aspossible before fitting anelbow.Theextraction
measured(see diagram below), mustnot be below 0.8
mm CE nor exceed 3 mm CE (the boiler must be
operating).
- the burnt gases duct must be secured carefully and
must not be supported by the boiler. We recommend
installingaremovableduct.
N05441-1.DSF
03004-01
The position for measuring
the extraction is equal to
the Ø of the chimeney
1 meter
minimum
recommanded

8
Connect the phase to the strip’s L terminal.
Theline must withstandanintensityof6.3A under230V50
Hz+Ground(checkthatpowerofthepump(s)iscompatible).
Implementtheelectricconnectionasshownintheelectrical
diagramoftheinstructionset.Fitagroundwire50mmlonger
than the neutral and Phase wire to ensure tear-out safety.
The burner switch fitted on the regulation module does not
dispense with the need to fit the regulatory wall switch.
Inthecaseofinsufficientionisingcurrentduetononcompliant
neutral or ground, we recommend adding a circuit isolation
transformer with a power at least equal to 600 VA.
Control panel supply connection terminal strip
Cable paths
Avoid any contact between the sypply cable and the
drafthood.
Passage of the
supply cable
N05446.JPG
Installation diagram recommended
Table:Calculationofthefumeductsforconnectingtwo
identical boilers
3.6 Room ventilation
Theboilermustbeinstalledinaroomproperlyventilatedand
separatedfromthelivingquarters.Theorificesmustalways
bemaintainedingoodconditionofoperation,theymustallow
forminimumventilation.
3.7 Electricconnection
Thefacilitymustcomplywithcurrentlyenforcednationaland
localregulations.Notably,theelectricconnectionoftheboiler
requiresasectioningdeviceoneachpolewithaminimum3
mm distance between each contact.
Thepowersupplyterminalstripisaccessibleafterremoving
thetop(see§5.1A-B).Itislocatedinthetopleftangleofthe
regulationbracket(oppositetheboiler).
Nr
of
elements
Power in
kW
1 boiler
Power in
kW
2 boiler
Dimensions in mm
Ø
connection Ø collector duct Ø fumes
5 66.2 132 180 300 300
6 82.8 166 200 300 300
7 99.4 200 200 300 300
8 115.9 532 250 300 300
Nr of elements Power in kW Ventilation cross-section (cm²)
low high
5 66.2 290 * boiler room
surface
(m²) x 10
6 82.8 360
799.4435
8115.9510
* minimum high ventilation cross-section = 150 cm²
Theground socket plannedon the connectingtermi-
nalstripmustbeconnectedaspercurrentlyenforced
provisions.
1m
N05444-1.DSF
connection Ø
collector Ø
fume duct Ø
N05445-00-1.TIF
Main power
supply
230 Vac 50 Hz
(phase imperatively
in L)
Connection of a
room thermostat
if any Heatingpump
supply

9
Thermostat and
thermometer bulbs
02078-01
00229-5
Boiler glove finger
with regulation probe
When fitting the capillaries, ensure they are inserted fully
in the glove finger.
1 - Overheating safety thermostat
2 - Heating outlet thermometer
3 - Regulation thermostat
4 - Tube Ø 6
Main valve
dual rating
(9-channel connector)
Ignition transformer -
Gas pressure switch
(6-channel connector)
Connecting
additional valve
(conenctor
3 channels)
Ignitionplug
Plug
ionisation
Glove
finger
glove
finger
Main valve
dual rating
(9-channel connector)
Ignition transformer -
Gas pressure switch
(6-channel connector)
Ignition
plug
Plug
ionisation
Glove
finger
glove
finger
4 Commissionningtheboiler
4.1 Connectionwithcomponents
Electricaly connect the control module and the various
components:
- Ignitiontransformerandgaspressureswitch(connector,
6channels),
- dualratingsmainvalve(9-channelconnectors)
- additionalvalve(3-channelconnector)
- connectingtheignitioncable(leftelectrode)andionisation
cable (right electrode) on the intermittent pilot burner
assembly.
- fittingthethermostatbulbs,thermometer(andregulation
probeinoption) in the glove fingerasshown in the
diagram.
Connecting 1 valve
Connecting 2 valves
N05448-1-.DSF
N05449-1.DSF
Thermostat and
thermometer bulbs

10
Descriptionand setting of thepressure:
- model6 elements are fittedwith a single gasvalve.
- modelswith 7 and8 elements arefitted with two valves
fittedin parallel.
- themain valveincludesadualstage regulatorusedtoset
the pressure at the injectors for nominal rating (screw A)
andminimum rating (screw B).
- the2nd valve(complementaryvalve)isasinglestage
valvewitha regulatorwhichmustbelocked.
Model 6 éléments
Models with 7 and 8 elements
03883-00
A
B
C
Thegasramp- burner set is factorysetdor design pressure
andreduced pressure (see gascharacteristic page 4).
Ifamodificationoftheinjectorpressure is required, proceed
asfollows:
- loosen the pressure screws at the injectors located on
the gas ramp and check the pressure with a pressure
gaugeattheappropriatepressure.
Settings and checks
- firstset the design pressure, then the minimum pressure.
- any adjustment of the nominal pressure impacts the
minimumpressure setting.
- neverserthedesignpressureabove the range indicated.
Before commissionning, check the compliance of
the burner equipment with the supply gas.
IMPORTANT: The settings must be made only by
skilledstaff
Wait for the pressure to stabilise before adjusting.
We recomment activating the dual stage regulator
several times to ensure proper setting.
The hood must be removed before performing the
settings.Inordertodothis,insertasmallscrewdriver
in one of the notches, and remove the cap slowly.
ADesign pressure setting screw
BMinimum pressure setting screw
CCap
Setting the adjustment screw for maximum pressure level
Setting the adjustment screw for minimum pressure level