IDEAL Vanguard L User manual

installation and
servicing
Your Ideal installation and servicing guide
ENGINEERED FOR PEACE OF MIND
When replacing any part on this appliance, use only spare parts that you can be
assured conform to the safety and performance specification that we require.Do not
use reconditioned or copy parts that have not been clearly authorised by Ideal Boilers.
Vanguard L
Models 170 - 3500

2
Vanguard L - Installation & Servicing
GENERAL
Note.
Fuel rates and flue gas data relate to maximum output ratings.
Gas firing data relates to the use of NATURAL GAS ONLY.
Details for the use of LPG are available on request from Caradon
Ideal Ltd.
Natural gas consumption is calculated using a calorific value of
38.7MJ/m3(1038Btu/ft3) gross or 34.9MJ/m3(935Btu/ft3) nett at
15ºC and 1013.25mbar.
Table 1 Performance Data
HEALTH &SAFETYDOCUMENT NO.635
The electricity at work regulations, 1989. The manufacturer's
notes must NOT be taken, in any way, as overriding statutory
obligations.
IMPORTANT. These appliances are CE certified for safety and
performance. It is, therefore, important that no external control
devices, e.g. flue dampers, economisers etc., are directly
connected to these appliances unless covered by these
Installation and Servicing Instructions or as otherwise
recommended by Caradon Ideal Limited in writing. If in doubt
please enquire.
Any direct connection of a control device not approved by
Caradon Ideal Limited could invalidate the certification and the
normal appliance warranty. It could also infringe the Gas Safety
Regulations and the above regulations.
Boiler Size 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Maximum Heat Output kW 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Btu/hx103580 819 990 1160 1433 1740 2150 2593 2969 3301 3753 4504 5357 6312 7507 9042 10236 11942
Minimum Heat Output kW 130 180 220 255 315 385 480 580 660 750 860 1000 1200 1400 1700 2000 2300 2700
Btu/hx103444 614 751 870 1075 1314 1638 1980 2252 2559 2934 3412 4095 4777 5800 6824 7848 9212
Hydraulic resistance 11K mbar 27.5 60.4 38.4 51.2 31.1 45.8 69.5 47.6 60.4 75.0 54.9 64.1 60.4 82.4 62.2 87.9 113.5 153.7
inwg 11.0 24.2 15.4 20.5 12.4 18.3 27.8 19.0 24.2 30.0 22.0 25.6 24.2 32.9 24.9 35.1 45.4 61.5
Hydraulic resistance 20K mbar 8.3 18.3 11.6 15.5 9.4 13.8 21.0 14.4 18.3 22.7 16.6 19.4 18.3 24.9 18.8 26.6 34.3 46.5
inwg 3.3 7.3 4.7 6.2 3.8 5.5 8.4 5.8 7.3 9.1 6.6 7.8 7.3 10.0 7.5 10.6 13.7 18.6
Combustion chamber mm w.g. 15 27 22 30 28 42 46 35 46 57 42 60 49 68 52 76 60 78
resistance(atzerodraught) in w.g. 0.59 1.06 0.87 1.18 1.10 1.65 1.81 1.38 1.81 2.24 1.65 2.36 1.93 2.68 2.04 2.99 2.36 3.07
Flow connection (T1) DN PN6 65 65 80 80 100 100 100 125 125 125 150 150 175 175 200 200 200 200
Return connection (T2) DN PN6 65 65 80 80 100 100 100 125 125 125 150 150 175 175 200 200 200 200
Max.operating pressure bar 6 6 6 6 6 6 6 6 6 6 6 6 666666
Max. boiler therm. setting ºC 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90 50-90
Safety thermostat setting ºC 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
High-low setting ºC 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84 44-84
Min.draughtat smokehood mbar 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
outlet (for max. output) in w.g. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Safetyvalve&expansion (T3) BSP/DN PN6 11/2"1
1/2" 2" 2" 2" 2" 2" 65 65 65 80 80 100 100 125 125 125 125
Drain (T4) in 3/4 3/4 3/4 3/4 3/4 3/4 3/4 11/411/411/411/211/211/211/211/211/211/211/2
Flue outlet (T5) mm 200 200 250 250 250 250 250 350 350 350 400 400 450 450 520 520 570 620
in 7.8 7.8 9.8 9.8 9.8 9.8 9.8 13.8 13.8 13.8 15.7 15.7 17.7 17.7 20.5 20.5 22.4 24.4
Boiler water content l 190 251 264 298 398 462 565 671 753 836 1040 1242 1418 1617 2086 2324 2553 4862
gal 41.8 55.2 58.1 65.6 87.5 101.6 124.3 147.6 165.6 183.9 228.8 273.2 311.9 355.7 458.9 511.2 561.6 1069.6
Boiler DRY weight less kg 435 510 588 629 796 919 1047 1341 1447 1553 1821 2030 2780 3280 4145 4465 5110 6700
burnerunit lb 959 1124 1296 1387 1755 2026 2313 2956 3190 3424 4015 4475 6129 7231 9138 9844 11266 14771
Boiler Size 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Maximum oil rate l/h 19.1 27.0 32.5 38.1 47.1 57.2 70.8 85.2 97.4 108.6 123.2 147.9 176.0 207.4 247.1 297.3 336.6 393.1
gal/h 4.2 5.9 7.2 8.4 10.4 12.6 15.6 18.7 21.4 23.9 27.1 32.5 38.7 45.6 54.4 65.4 74.0 86.5
Maximum flue m3/sec 0.10 0.14 0.17 0.20 0.25 0.31 0.37 0.44 0.52 0.56 0.64 0.76 0.91 1.07 1.26 1.52 1.72 1.99
gas volume ft3/min 209 299 356 417 523 648 775 932 1102 1189 1348 1620 1926 2255 2670 3213 3638 4221
Flue Gas CO2 at 195ºC % 13.0 12.8 13.0 13.0 12.8 12.5 13.0 13.0 12.5 13.0 13.0 13.0 13.0 13.1 13.2 13.2 13.2 13.3
Table 2 Oil Firing Data
Boiler Size 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Maximum Gas Rate m3/h 19.1 26.9 32.4 38.0 47.0 57.0 70.5 84.9 97.1 108.3 122.8 147.5 175.4 206.7 246.3 296.4 335.6 391.9
Gross ft3/h 673.2 949.4 1144.7 1340.6 1657.9 2013.1 2489.5 2996.7 3426.7 3820.6 4332.6 5204.8 6190.6 7294.6 8693.5 10460.4 11841.9 13830.5
Maximum flue m3/sec 0.10 0.14 0.17 0.19 0.25 0.30 0.37 0.45 0.52 0.57 0.65 0.78 0.93 1.08 1.26 1.51 1.75 2.04
gas volume ft3/min 211 293 360 411 519 633 775 946 1098 1211 1368 1657 1967 2299 2671 3203 3717 4332
Flue Gas CO2 at 195ºC % 10.0 10.1 10.0 10.2 9.9 9.9 10.2 9.9 9.8 10.0 10.0 10.0 10.0 10.1 10.2 10.2 10.2 10.2
Table 3 Gas Firing Data
Assembly and Installation Instructions for Ideal Vanguard L heating boilers should be read in conjunction
with the general technical data tables enclosed and any other technical publication supplied with the burner.

3
Vanguard L - Installation & Servicing
GENERAL
van 5652
CONTENTS
Assembly....................................................................15-23
Boiler Clearances. ............................................................ 9
Boiler Dimensions. ........................................................ 6-8
Burner Connection. ........................................................ 24
Commissioning and Testing. ................................ 28 & 29
Electrical Connections. .................................................. 25
ElectricalSupply. .............................................................. 5
FlueInstallation................................................................. 5
Fluing. .............................................................................. 12
Gas Safety Regulations .................................................... 4
GasSupply......................................................................... 4
Hydraulic Resistance. ...................................................... 2
Initial Start Up Lighting. .................................................. 29
Introduction....................................................................... 3
Installation....................................................................... 13
Performance Data. ........................................................... 2
Positioning of the Turbulators. ........................................ 9
Servicing. ........................................................................ 31
Ventilation. ...................................................................... 11
Water Circulation. ............................................................ 5
Water Connections. ......................................................... 6
Water System Requirements. ...............................10 & 11
Water Treatment. ............................................................. 5
Wiring Diagrams.................................................... 25 & 26
CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning of
this appliance, care should be taken when handling edges of sheet steel components.
Vanguard 'L'
GasandFuel Oil
PI No. 0461BN0658
Destination Countries: GB,IE
INTRODUCTION
The Vanguard L boilers are a range of steel shell pressure jet
boilers offering high efficiency operation, ease of maintenance,
fuel flexibility and low emissions.
Suitable for oil or gas operation the Vanguard L range is
supplied in a choice of 18 standard models, rated in outputs
from 130kW (443,000 Btu/h) to 3500 kW (11,942,000 Btu/h). The
range has a maximum operation pressure of 6 bar.
Designed with a large combustion chamber that is positioned in
the lower part of the heat exchanger, the Vanguard L range
ensures maximum heat transfer efficiency (up to 92.5% net).
Through the use of an increased number of flue ways tubes
which are positioned in the hottest area of the heat exchanger
and constructed from a thicker steel construction than that of
traditional boilers, the Vanguard L range is capable of an
impressive output to size ratio.
Duty
The range of boiler is suitable for: combined indirect pumped
domestic hot water and central heating systems; independent
indirect pumped domestic hot water or central heating systems.
Fully pumped systems may be open vented or sealed.
The range of boilers is NOT suitable for:
1. Gravity DHW systems.
2. Gravity heating systems.
3. Direct domestic hot water supply.

4
Vanguard L - Installation & Servicing
GENERAL
SAFETY
Current Gas Safety (Installation and Use) Regulations or
rules in force.
It is law that all gas appliances are installed and serviced by a
CORGI registered installer in accordance with the regulations
below. Failure to install appliances correctly could lead to
prosecution. It is in your own interest, and that of safety, to
ensure the law is complied with.
The following must be conformed with:
Current Building Regulations and Clean Air Act
Water Authority Regulations
Local Authority Regulations and Regional Bylaws
Gas Safety Regulations
Any special regional requirements of local Electricity and Gas
undertaking.
Fire Service and Insurance Company requirements.
In the interests of safety, a competent installer should be
employed to effect the installation of the appliance.
Manufacturer's notes must NOT, in any way, be taken as over
riding statutory obligations.
The installation of the boiler MUST also be in accordance with
the latest I.E.E. (BS7671) Wiring Regulations, local buildings
regulations, bye-laws of the local water authority, the building
regulations and the Building Standards (Scotland) and any
relevant requirements of the local authority.
Detailed recommendations are contained in the following
Codes of Practice:
BS 799 Pt4 & 7 Oil burning equipment.
BS 799 Pt5 Oil storage tanks.
BS 5410 Pt2 Installation for space heating, hot water and
steam supply.
BS 5854 Flues and flue structures in buildings.
BS 5885 Pt1 Gas burners - with inputs 60kW and above.
BS 6644 Installation of gas fired hot water boilers of
rated input between 60kW and 2MW (2nd and
3rd family gases).
BS 6880 Low temperature hot water heating systems
of output greater than 45kW.
Part 1 Fundamental and design considerations.
part 2 Selection of equipment.
part 3 Installation, commissioning and
maintenance.
BS 6891 Installation of low pressure gas pipework of
up to 28mm (R1) in domestic premises (2nd
family gas).
EN 303.1 Heating boilers with forced draught burners.
General requirements.
EN 303.2 Heating boilers with forced draught burners
with atomizing oil burners.
NOTE TO THE INSTALLER: LEAVE THESE INSTRUCTIONS ADJACENT TO THE BOILER.
EN 304 Test code for heating boilers for atomizing oil
burners.
73/23 EEC Low voltage directive. (Relevant standard is
EN60335.1)
89336 EEC Electromagnetic Compatibility Directive.
(Relevant standards are EN50081.1,
EN50082.1 and EN55014.)
90396 EEC Gas Devices Directive. (Relevant standards
are EN303.1, EN303.2 and EN304.)
IGE/UP/1 Soundness testing and purging of industrial
and commercial gas installation.
IGE/UP/2 Gas installation pipework, boosters and
compressors on industrial and commercial
premises.
IGE/UP/10 Installation of gas appliances in industrial and
commercial premises.
SAFE HANDLING OF SUBSTANCES
Care should be taken when handling the boiler insulation
panels, which can cause irritation to the skin. No asbestos,
mercury or CFCs are included in any part of the boiler or its
manufacture.
GAS SUPPLY
The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an
adequate supply of gas. An existing service pipe must NOT be
used without prior consultation with the local gas supplier.
A gas meter can only be connected by the local gas supplier or
by a registered CORGI engineer.
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the
rate of gas supply required. A minimum working gas pressure
of 17.5mbar MUST be available at the boiler inlet for Natural gas
and 37mbar for Propane.
Do not use pipes of smaller size than the burner inlet gas
connection.
The complete installation MUST be tested for gas soundness
and purged in accordance with the appropriate standards listed
above.
Gas Boosters
A gas booster is required if the gas pressure available at the
burner is lower than that required by the burner manufacturer to
attain the flow rate for maximum burner input rating.
Location of the booster requires careful consideration but
should preferably be closer to the burner rather than the gas
meter. Ventilation should also be considered to ensure ambient
temperatures do not exceed designed recommendations.
Further guidance is provided in IGE/UP/2 as listed above.
Assembly and Installation Instructions for Ideal Vanguard L heating boilers should be read in conjunction with the general
technical data tables enclosed and any other technical publication supplied with the burner.

5
Vanguard L - Installation & Servicing
GENERAL
FLUE INSTALLATION
IMPORTANT
It is the responsibility of the installer to ensure that products of
combustion discharging from the terminal cannot re-enter the
building or any other adjacent building.
Fan dilution systems may be incorporated into the flue system.
However, ventilation must take into account the additional air
requirement of the boiler house and interlocking must be
provided to ensure adequate air flow is attained before burner
operation proceeds.
The flue must be installed in accordance with the appropriate
standards listed on page 4.
WATER CIRCULATION SYSTEM
The system pump MUST be connected to the boiler.
The boiler must NOT be used for direct hot water supply. The
calorifier MUST be of the indirect type.
The appliances are NOT suitable for gravity central heating nor
are they suitable for the provision of gravity domestic hot water.
The calorifier and ancillary pipework, not forming part of the
useful heating surface, should be lagged to prevent heat loss
and any possible freezing - particularly where pipes run through
roof spaces and ventilated underfloor spaces.
The boiler must be vented.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least 1/2" BSP
nominal size and be in accordance with BS. 2879.
The central heating system should be in accordance with the
relevant standards listed on page 4.
Due to the nature of the boiler the heat stored at the point of
shutdown of the burner must be dissipated in order to avoid
overheating. In order to allow pump operation after burner
shutdown the boiler control box incorporates a pump overrun
facility. In order to make use of this, the pump must be supplied
from the terminals inside the boiler. Note: for pumps requiring
greater than 1.0amp current or using 3 phase they must be
connected via a relay.
WATER TREATMENT FOR HOT WATER AND
HEATING BOILERS
There is a basic need to treat the water contained in all heating
and indirect water systems, particularly open vented systems. It
is assumed, incorrectly, that because boilers are operating in
conjunction with what is apparently a closed circuit an open
vented system will not, under normal circumstances, allow
damage or loss of efficiency due to hardness salts and
corrosion once the initial charge of water has been heated up a
few times.
1mm of lime reduces the heat transfer from metal to water by
10%.
In practice the deposition of these salts is liable to cause noises
from the boiler body or even premature boiler failure. Corrosion
and the formation of black iron oxide sludge will ultimately result
in premature radiator failure.
Open vented systems are not completely sealed from the
atmosphere if proper venting and expansion of system water is
to be achieved. The same tank is used to fill the system with
water and it is through the cold feed pipe that system water
expands into the tank when the boiler passes heat into the
system.
Conversely, when the system cools, water previously expelled is
drawn back from the tank into the system together with a quantity
of dissolved oxygen.
Even if leakage from the heating and hot water system is
eliminated there will be evaporation losses from the surface of
the tank which, depending upon ambient temperature, may be
high enough to evaporate a large portion of the system water
capacity over a full heating season.
There will always be corrosion within a heating or hot water
system to a greater or lesser degree, irrespective of water
characteristics, unless the initial fill water from the mains is
treated. Even the water in closed systems will promote
corrosion unless treated. For the reason stated, Caradon Ideal
Limited strongly recommend that when necessary the systems
is thoroughly cleaned, prior to the use of stable inhibitor, which
does not require continual topping up to combat the effects of
hardness salts and corrosion on the heat exchangers of the
boiler and associated systems.
Caradon Ideal Limited advise contact directly with specialists on
water treatment such as:
Betz Dearborn Ltd or Fernox Manufacturing Co. Ltd.
Widnes, Tandem House, Marlowe Way,
Cheshire, Croydon, Surrey, CRO 4XS
Tel: [phone] Tel: [phone]
ELECTRICAL SUPPLY
WARNING This appliance must be earthed.
ControlPanel:
A 230V - 50Hz. Fused at 4 amps.
Wiring external to the appliance MUST be in accordance with the
current I.E.E. (BS7671) Wiring Regulations and any local
regulations which apply.
Burner and Pump:
These may be 1ph or 3ph. Refer to manufacturer's instructions.
The point of connection to the mains should be readily
accessible and adjacent to the boiler.
LOCATION OF THE BOILER
The boiler must stand on a non-combustible floor (i.e. concrete
or brick) which must be flat, level and of a suitable load bearing
capacity to support the weight of the boiler (when filled with
water) and any ancillary equipment.
If the boiler is mounted on a plinth then the dimensions must
exceed the plan area of the boiler by at least 75mm on each
side.
The boiler must not be fitted outside.

6
Vanguard L - Installation & Servicing
GENERAL
van5654
1 BOILER WATER CONNECTIONS
2 BOILER DIMENSIONS
The Vanguard L boilers are provided with flanged
connections for both flow and return.
Dimensions vary depending on the boilers output and
details can be found in the General Data Table on
page 4.
The boiler shell is also provided with separate
connections for a drain and safety valve.
Dimensional details can also be found in the General
Data Table on page 4.
1. Control Panel
2. Burner mating flange with gasket
3. Flue collector hood cleaning door
4. Flame inspection tube with pressure
test nipple and cooling line connection
van 5653
Vanguard L 170 - 630
T1.Flow connection
T2.Return connection
T3.Safety valve and expansion connection
T4.Drain connection
T5.Flue connection
T6.Burner connection
Boiler Size 170 240 290 340 420 510 630
Dimension A mm 820 820 860 860 890 890 890
Dimension B mm 885 1145 1080 1210 1275 1470 1780
Dimension C mm 1082 1082 1182 1182 1352 1352 1352
Dimension D mm 190 190 190 190 190 190 190
Dimension E mm 139 139 139 139 139 139 139
Dimension F mm 145 145 145 145 145 145 145
Dimension G mm 648 648 708 708 748 748 748
Dimension H mm 380 380 400 400 440 440 440
Dimension I mm 1169 1429 1366 1496 1561 1756 2066
Dimension L mm 130 130 130 130 125 125 125
Dimension M* mm 1210 1210 1310 1310 1485 1485 1485
Dimension N mm 175 175 215 215 255 255 255
Dimension O mm 130 390 210 340 285 480 790
Dimension P mm 185 185 250 250 315 315 315
Dimension Q* mm 710 710 750 750 780 780 780
Dimension R* mm 785 1045 982 1112 1177 1372 1682
* Minimum dimensions for boiler room access requirements.

7
Vanguard L - Installation & Servicing
GENERAL
3 BOILER DIMENSIONS CONT'D
1. Control Panel
2. Burner mating flange with gasket
3. Flue collector hood cleaning door
4. Flame inspection tube with pressure test
nipple and cooling line connection
Vanguard L 760 - 970
T1.Flow connection
T2.Return connection
T3.Safety valve and expansion connection
T4.Drain connection
T5.Flue connection
T6.Burner connection
van 5655
Boiler Size 760 870 970
Dimension A mm 1122 1122 1122
Dimension B mm 1605 1800 1995
Dimension C mm 1432 1432 1432
Dimension D mm 190 190 190
Dimension E mm 195 195 195
Dimension F mm 145 145 145
Dimension G mm 765 765 765
Dimension H mm 480 480 480
Dimension I mm 1944 2139 2334
Dimension L mm 125 125 125
Dimension M* mm 1540 1540 1540
Dimension N mm 298 298 298
Dimension O mm 435 630 825
Dimension P mm 440 440 440
Dimension Q* mm 1020 1020 1020
Dimension R* mm 1504 1699 1894
* Minimum dimensions for boiler room access requirements.

8
Vanguard L - Installation & Servicing
GENERAL
van 5656
4 BOILER DIMENSIONS CONT'D
1. Control Panel
2. Burner mating flange with gasket
3. Flue collector hood cleaning door
4. Flame inspection tube with pressure test
nipple and cooling line connection
Vanguard L 1100 - 2650
T1.Flow connection
T2.Return connection
T3.Safety valve and expansion connection
T4.Drain connection
Vanguard L 3000 - 3500
T5.Flue connection
T6.Burner connection
T7.Sludge hole
T8.Handhole
* Minimum dimensions for boiler room access requirements.
Boiler Size 1100 1320 1570 1850 2200 2650 3000 3500
Dimension A mm 1352 1352 1462 1462 1622 1622 1720 1970
Dimension B mm 1952 2292 2282 2652 2692 3014 3230 3194
Dimension C mm 1432 1432 1542 1542 1702 1702 1830 2090
Dimension D mm 190 190 190 190 190 190 190 190
Dimension E mm 207 207 227 227 259 258 295 325
Dimension F mm 287 287 287 287 289 288 325 375
Dimension G mm 810 810 880 880 950 950 1315 1535
Dimension H mm 595 595 640 640 690 690 772 915
Dimension I mm 2446 2786 2796 3166 3240 3560 3850 3894
Dimension L mm 75 75 75 75 75 75 115 144
Dimension M* mm 1540 1540 1650 1650 1810 1810 1990 2271
Dimension N mm 461 461 561 561 661 662 325 377
Dimension O mm 330 670 510 880 670 990 1100 1060
Dimension P mm 500 500 550 550 700 700 1330 1280
Dimension Q* mm 1250 1250 1360 1360 1520 1520 1620 1870
Dimension R* mm 1846 2186 2176 2546 2590 2910 3200 3164

9
Vanguard L - Installation & Servicing
GENERAL
van 5657
Y
X
X
W
5 BOILER LOCATION AND CLEARANCES
Positioning the Boiler
The boiler body should be positioned as near as possible to
the installation site. The boiler can be moved into position by
the use of rollers under the longitudinal L profiles running the
length of the boiler. If it is necessary, due to the dimensions of
the boiler, it is possible to remove the front door and the flue
collector hood to facilitate moving the boiler into the boiler
house.
The boiler must have sufficient space as shown below to
maintain minimum clearance. It must also comply to relevant
local by laws and safety regulations. It is advisable to install the
boiler as close as possible to the chimney connection on a non
combustible floor (i.e. concrete or brick).
The surface must be flat, level, and of a suitable load bearing
capacity to support the weight of the boiler (when filled with
water - see general data table).
If the boiler is mounted on a plinth then the dimensions (see
Frame 2) must exceed the plan area of the boiler by at least
75 mm on each side.
Clearances
The boiler must be positioned so that there is enough space
available to allow the following:
•Access around the boiler for servicing.
•Space to open the boiler front door.
•Space to access the burner.
Recommended minimum clearances are as follows:
Rear - All Models
(W) 500mm or adequate space to make the flue
connections and access to the flue sample point,
drain connection and any safety or control devices.
Sides - Models 170 to 970 and 3000 and 3500
(X) One side may be 100mm (normally the left) to permit
access to the burner cable clamp plate, the other side
must be 200mm plus the burner projection to allow
the burner door to be swung open and maintain
access to the rear. In multiple installations
consideration must also be given to the burner door
hinge position and consequent clearance.
Models 1100 to 2650
One side may be 100mm (normally the left) to permit
access to the burner cable clamp plate, the other
side must be 200mm plus the burner projection to
allow the burner door to be swung open and maintain
access to the rear. However, due consideration must
be made on the left hand side to provide access to
the sludge hole. In multiple installations
consideration must also be given to the burner door
hinge position and consequent clearance.
Front- All Models
(Y) Not less than the length of the boiler body or
1200mm whichever is the smaller dimension

10
Vanguard L - Installation & Servicing
GENERAL
6 OPEN VENTED SYSTEM - minimum static head requirements
The Vanguard L boiler has a minimum static head
requirement of 2.5 metres (8 feet approx.) depending on the
particular characteristics of the system design (see diagram).
The information provided is based on the following
assumptions:
1. An open vent/safety pipe connection is made from the
Safety Valve and Expansion connection point on the boiler
body.
2. A cold feed/expansion pipe connection is made to the
system return pipe within 0.75m of the boiler return
connection.
3. The maximum flow rate through the boiler is based on a
temperature difference of 11ºC (20ºF) at full boiler output
with the circulating pump positioned in the flow of the
system.
4. The boiler is at the highest point of the system. Systems
designed to rise above the flow connections will, of course,
automatically require a minimum static head higher than
shown.
5. The position of the open vent/safety pipe above the
expansion cistern water level is given as a guide only. The
final position will depend upon particular characteristics of
the system. Pumping over of water into the expansion
cistern should be avoided.
6. Both open vent/safety pipe and cold feed/expansion pipes
must be of adequate diameter to suit the output of the boiler
(see table below).
Boiler Output kW Open Vent (mm) Cold Feed (mm)
151 to 300 38 32
301 to 600 50 38
above 600 63 50
Expansion
cistern
2.5 m
750 mm
Shunt pump
(if required)
Boiler
Note: Height MUST
be increased if necessary
to comply with the min.
head required by the
pump manufacturer
To pump
Mains water
supply
Cold feed/
expansion pipe
Open vent
safety pipe
*
*
van 5658

11
Vanguard L - Installation & Servicing
GENERAL
7 SEALED (PRESSURISED) SYSTEM
Working pressure 6 bar maximum.
Particular reference should be made to BS 6644: Section 2;
Subsection 11 and Guidance note PM5 "automatically
controlled steam and hot water boilers" published by the
Health and Safety Executive.
The information and guidance given below is not intended to
override any requirements of either of the above publications
or the requirements of the local authority, gas or water
undertakings.
In general commercial closed pressurised systems are
provided with either manual or automatic water make up.
In both instances it will be necessary to fit automatic controls
intended to protect the boiler, circulating system and ancillary
equipment by shutting down the boiler plant if a potentially
hazardous situation should arise.
Examples of such situations are low water level and operating
pressure or excessive pressure within the system.
Depending on circumstances, controls will need to be either
manual or automatic reset.
In the event of a shutdown both visual and audible alarms
may be necessary.
Expansion vessels used must comply with BS. 4814 and must
be sized on the basis of the total system volume and initial
charge pressure.
Initial minimum charge pressure should not be less than 0.5
bar (7.2 psi) and must take account of the static head and
specification of the pressurising equipment. The maximum
water temperatures permissible at the point of minimum
pressure in the system are specified in Guidance Note PM5.
When make up water is not provided automatically it will be
necessary to fit controls which shut down the plant in the event
of the maximum system pressure approaching to within 0.5 bar
(5 psi) of the safety valve setting.
Other British Standards applicable to commercial sealed
systems are:
BS6880: Part 2
BS 1212
BS 6281: Part 1
BS 6282: Part 1
BS 6283: Part 4
8 VENTILATION
Safe, efficient and trouble-free operation of conventionally
flued gas boilers is vitally dependent on the provision of an
adequate supply of fresh air to the room in which the
appliance is installed.
Ventilation by grilles communicating directly with the outside
air is required at both high and low levels. The minimum free
areas of these grilles must be according to the following
scale in Table 4.
Table 4 - Ventilation Requirements
Total input Position of air Air vent areas (air
rating of boilers vents direct from outside)
HIGH LEVEL 270 cm2plus
2.25 cm2per kW
in excess of 60 kW
total rated input
Up to 2 MW LOW LEVEL 540 cm2plus
4.5 cm2per kW
in excess of 60 kW
total rated input
Position ventilation grilles to avoid the risk of accidental
obstruction by blockage or flooding. If further guidance on
ventilation is required then consult BS 6644.
The supply of air by mechanical means to a space housing the
boiler should be by mechanical inlet with natural or mechanical
extraction. Mechanical extract ventilation with natural inlet must
not be used.
Where a mechanical inlet and a mechanical extract system is
applied, the design ventilation flow rates should be as in Table 4
of BS 6644.
Note.
For mechanical ventilation systems an automatic control should
be provided to cause safety shutdown or lockout of the boiler(s)
in the event of failure of air flow in either inlet or extract fans.
IMPORTANT. The use of an extractor fan in the same room as
the boiler (or in an adjacent communicating room) can, in
certain conditions, adversely affect the safe operation of the
boiler.
Where such a fan is already fitted (or if it is intended to fit an
extractor fan after installation of the appliance) the advice of the
gas supplier should be obtained.

12
Vanguard L - Installation & Servicing
GENERAL
General
Flues shall be constructed of suitable materials. The installer
must respect the usual precautions (dilution, piping, 'T' for
removal of condensation) in order to prevent deterioration of
the chimney.
Routing
The route of any flue shall be as direct as practicable avoiding
horizontal runs and 90ºbends.
Entry into a masonry chimney shall be inclined upwards at 45º.
9 FLUING
FlueSize
Refer to applicable regulations while determining the size and
height of the flue. Please note that Vanguard L boilers have
pressurised and sealed combination chambers and that the
pressure at the outlet must not exceed 0 mbar.
Detailed recommendations relating to the design of flues for
GAS fired appliances are quoted in BS. 6644 and IGE/UP/10,
whilst BS. 5410 Pt. 2 similarly applies to OIL fired boilers.
Flues should not be less in diameter than the boiler outlet
connection size. Refer to Table 1.
45
van5495
Boiler
INSTALLATION

13
Vanguard L - Installation & Servicing
INSTALLATION
10 PACKAGING
The boiler is supplied in the following packages:
•Boiler body assembly
•Separate jacket parts
•The control pack, accessory pack, literature pack and
hardware items are stored inside the combustion
chamber.
Check that all these packages are complete and have been
correctly received on site.
Refer to Frames 11 and 12.
11 JACKET COMPONENTS
BOILER MODEL No. 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Box Code VAL 01 02 03 04 05 06 09 12 14 16 19 21 24 26 29 31 35 38
Right Side Jacket 1 1 1 1 1 1 - -----------
Left Side Jacket 1 1 1 1 1 1 - -----------
Upper Rear Jacket 1 1 1 1 1 11111111111- -
Lower Rear Jacket 1 1 1 1 1 11111- - - -----
Upper Front Jacket 1 1 1 1 1 11111111111- -
Upper Rear Right Jacket 1 1 1 1 1 11111111111- -
Upper Rear Left Jacket 1 1 1 1 1 11111111111- -
Upper Rear Central Right Jacket - - - - - - - --------1--
Upper Rear Central Left Jacket - - - - - - - --------1--
Support for the Upper Jacket - - - - - - - --------1--
Body Insulation 1 1 1 1 1 1 - -----------
Front Insulation 1 1 1 1 1 1 - -----------
Rear Insulation 1 1 1 1 1 1 - -----------
Central Body Insulation - - - - - - - ---------11
Rear Side Jacket - - - - - - - ---------22
Spare Parts Plastic Bag 1 1 1 1 1 1 - -----------
Box Code VAL 07 10 10 10 17 17 22 22 27 27 33 36
Front Right Side Jacket - - - - - - 1 1 1 1 1 1111111
Front Left Side Jacket - - - - - - 1 1 1 1 1 1111111
Front/Rear Jacket - - - - - - - -----------
Upper Front Jacket - - - - - - - -----------
Supp. for the Right Side Jacket - - - - - - - -----------
Supp. for the Left Side Jacket - - - - - - - -----------
Front Insulation - - - - - - 1 1 1 1 - - - -----
Front Body Insulation - - - - - - 1 1 1 1 1 1111111
Upper Front Insulation - - - - - - - - - - 1 11111- -
Lower Front Insulation - - - - - - - - - - 1 11111- -
Spare Parts Plastic Bag - - - - - - 1 1 1 1 1 11111- -
Box Code VAL 08 11 13 15 18 20 23 25 28 30 - -
Rear Right Side Jacket - - - - - - 1 1 1 1 1 11111- -
Rear Left Side Jacket - - - - - - 1 1 1 1 1 11111- -
Rear Insulation - - - - - - 1 1 1 1 - - - -----
Rear Body Insulation - - - - - - 1 1 1 1 1 11111- -
Central Body Insulation - - - - - - - ------11---
Box Code VAL 32 34 37
Central Side Jacket - - - - - - - ---------22
Central Right Side Jacket - - - - - - - --------1--
Central Left Side Jacket - - - - - - - --------1--
Central Body Insulation - - - - - - - --------1--
Rear Body Insulation - - - - - - - ---------11
LIST OF JACKET'S COMPONENTS
INSTALLATION

14
Vanguard L - Installation & Servicing
INSTALLATION
12 ACCESSORIES BOX COMPONENTS
in Combustion Chamber
Control Pack (all models)
•Control Panel
•7 Way Burner Cable
•Instruction Sheet
Literature Pack (all models)
•Ideal Installation and Servicing Instructions
•Ideal User's Instructions
•Ideal Data Plate
•Ideal Log Book - Pressure Jet
•Ideal Warranty Literature
•Ideal Casing Badge
•7 Pole Burner Plug
•4 Pole Burner Plug
•4 Way Burner Cable
13 HARDWARE ITEMS
in Combustion Chamber
BOILER MODEL No. 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Box Code VAL 41 41 42 42 43 43 44 44 44 44 45 45 46 46 47 47 48 49
Arcuated Spring 2 2 2 2 2 2 2 22222222211
Elastic Claw for Ins. Fastening 9 9 10 10 16 16 16 18 18 18 20 20 22 22 26 26 29 29
Round Brush ∅41mm 11111111111111111-
Round Brush ∅56mm -----------------1
Washer - - - - - - - - - - - -
Nut ------------
Nut - - - - - - - - - -
Nut
Screw
Screw
Screw - - - - - - -
Plastic Strap 160x3 6 6 6 6 6 6 6 666666666- -
Flange Gasket - - - - - - -
Flange Gasket
Gasket ∅ 6
Multiple Cable Clamp 4 4 4 4 4 4 4 444444444- -
Flange - - - - - - - - - - -
Flange -----------
Ceramic Fiber 25x25 - - - - - - - - - - - - ----
Ceramic Fiber 25x25
666668
8,4x17 8,4x17 8,4x17 8,4x17 8,4x17 8,4x17
16 16 16 16 24 24 24 24
M20 M20 M20 M20 M20 M20 M20 M20
8 8 16 16 16 16 16 20 20 20 8 8 8 8 8 8 8 8
M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16 M16
4 444444 66666666668
M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x25 M8x25 M8x25 M8x25 M8x25 M8x25 M8x25 M8x25
88 8 88 88 1616161616161616161616
M12x60M12x60M16x70 M16x70M16x70 M16x70M16x70 M16x70M16x70M16x70 M20x80 M20x80 M20x80M20x80 M20x80M20x80M120x80M20x80
1 11 1111 1111
DN65 DN65 DN65 DN80 DN80 DN100 DN100 DN125DN125 DN125 DN125
2 222222 22222222222
DN65 DN65 DN80 DN80 DN100 DN100 DN100 DN125 DN125 DN125 DN150 DN150 DN175 DN175 DN200 DN200 DN200 DN200
1 111111 11111111111
lg.770 lg.770 lg.930 lg.930 lg.930 lg.930 lg.930 lg.1240 lg.1240 lg.1240 lg.1500 lg.1500 lg.1650 lg.1650 lg.1900 lg.1900 lg.2200 lg.2200
1 111111
DN65 DN65 DN65 DN80 DN80 DN100 DN100
2 222222
DN65 DN65 DN80 DN80 DN100 DN100 DN100 11
lg.3660 lg.3660
1 11111111111111111
lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.3660 lg.7320 lg.7320 lg.7320 lg.7320 lg.7320 lg.7320 lg.7320 lg.7320
PL A STI C BAG
44444444488
M16x60 M16x60M16x60 M16x70M16x70M16x70 M16x70 M16x70M16x70M16x70 M16x70
666668
M8 M8 M8 M8 M8 M8
111111111111
lg.390 lg.570 lg.570 lg.570 lg.570 lg.570 lg.570 lg.570 lg.570 lg.570 lg.570 lg.980
BOILER MODEL No. 170 240 290 340 420 510 630 760 870 970 1100 1320 1570 1850 2200 2650 3000 3500
Brush Handle
Brush Handle Extension
Brush Handle Extension - - - - - - - - - - - - - -
Flue Flange
Flange - - - - - - - - - - - - - -
Flange - - - - - - -
Turbulator Extractor - - - - - - - - - - - -
Turbulator Extractor ------
TurbulatorCore - - - - - ------
22222222222
DN125 DN125 DN125 DN150 DN150 DN175 DN175 DN200 DN200 DN200 DN200
1 111111 11111111111
lg.700 lg.700 lg.600 lg.700 lg.800 lg.500 lg.700 lg.600 lg.700 lg.900 lg.900 lg.700 lg.700 lg.500 lg.600 lg.900 lg.600 lg.600
1 111111 111 11 122211
lg.275 lg.550 lg.550 lg.550 lg.550 lg.1100 lg.1100 lg.1100 lg.1100 lg.1100 lg.1100 lg.550 lg.550 lg.1100 lg.1100 lg.1100 lg.550 lg.550
11 22
lg.1100 lg.1100 lg.1100 lg.1100
1 111111 11111111111
∅ i200 ∅ i200 ∅ i250 ∅ i250 ∅ i250 ∅ i250 ∅ i300 ∅ i350 ∅ i350 ∅ i350 ∅ i400 ∅ i400 ∅ i450 ∅ i450 ∅ i520 ∅ i520 ∅ i570 ∅ i620
111 1
DN125 DN125 DN125 DN125
111111
lg.1000 lg.1000 lg.1000 lg.1000 lg.980 lg.1000
26 26 33 33 44 44 44
lg.700 lg.700 lg.700 lg.700 lg.700 lg.700 lg.700
INSTALLATION

15
Vanguard L - Installation & Servicing
INSTALLATION
11
411
1
67
8
9
2
10
12 13
5
314
15
van 5706
15 CASING ASSEMBLY
Vanguard L 170 to 630
14 FLUE CONNECTION
1. Complete the secondary flue connection.
2. Seal with an approved boiler putty. 3. A split socket should be fitted immediately above the
boiler to facilitate disconnection of the flue.
For boiler models 170 to 510 the casing and insulation are
contained in one carton and for model 630 in 3 cartons.
Assembly of the casing should be carried out in the following
steps:
Refer to diagram below for details
A. Fit the insulation blanket (1) onto the boiler shell and
secure in to place using the elasticated straps (2)
provided, ensuring that the metal clips grip in to the
external surface of the insulation.
B. Locate the side panels (3) and (4) with the lower bend
inside the bottom L profiles and the upper bend in the
seats of front and rear tube plates.
To determine which is the left and right panel ensure that
the cable clamp plates are positioned toward the front
edge.
C. Open the combustion chamber door and fit the front
insulation (5), inserting the hinges in the pre-cuts. Insert
the side end of the insulation under the bend of the two
side panels (3 and 4).
D. Fit the rear insulation (6), fix the rear lower and upper
retaining strips (7 and 8), with the self tapping screws. Fit
the plastic cable clamps (9) to the upper rear panel (8).
E. Fit the 'Ideal' badge to the front edge of the front top panel
(10) and secure with the rubber fixings.
F. Fit the control panel to front top panel. Refer to Frame 16.
Remove the upper shell of the control panel and insert the
capillaries of thermometer and thermostats through the
slots. Position the front top panel and press on to the side
panels.
G. Insert the thermometer and thermostat bulbs in the sensor
pockets as shown in Frame 16 and connect the mains, the
burner, the pump(s) and any equipment to the control panel.
Refit the upper shell of the control panel.
Guide the burner plug through the side cable clamp plate
(11) and clamp the cable using the cable clamp supplied.
Fix the side cable clamp plates to the casing side panels.
Fit the cables leaving the boiler from rear panel, with the
plastic screws of the cable clamps (9).
H. Position the top panels (12 and 13) and press them against
the side panels.
I. Remove the protective paper film from data plate and
ventilation requirement label (14 and 15) and fit them at the
top front corner of the most accessible side panel after
removal of dust from the surface.
Data plate and ventilation requirements labels are in the
plastic bag containing the documents.
INSTALLATION

16
Vanguard L - Installation & Servicing
INSTALLATION
21
5
5
6
6
3
4
van 5710
16 POSITION OF THERMOMETER/THERMOSTAT SENSOR IN THE BULB HOLDER
Vanguard L 170 to 970
LEGEND
1. Thermometer bulb
2. Operation thermostat bulb
3. Safety thermostat bulb
4. Minimum temp. thermostat bulb
5. Sensor retaining clip
6. Contact spring
INSTALLATION

17
Vanguard L - Installation & Servicing
INSTALLATION
2
8
5
6
3a
3b / 4b
3b
12
13 14
4a
4b
51
7
9
11
10
15
16
van 5711
17 CASING ASSEMBLY
Vanguard L 760 to 970
For these boiler models the casing and insulation are
contained in 3 cartons.
Assembly of the casing should be carried out in the following
steps:
Refer to diagram below for details.
A. Fit the insulation blanket (1) onto the boiler shell and
secure into place using the elasticated straps (2)
provided, ensuring that the metal clips grip into the
external surface of the insulation.
B. Locate the side panels (3) and (4) with the lower bend
inside the bottom L profiles and the upper bend inside the
upper L profile. The head of the self tapping screw fixed to
the L profile has to coincide with the slot on the bend of
the side panel.
To determine which is the left and right panel ensure that
the cable clamp plate (5) is positioned toward the front
edge.
Fix the countersink screws (8) to the side panels pos. 3b
and 4b, inner rear side.
C. Open the combustion chamber door and fit the front
insulation (6), inserting the hinges in the precuts.
Insert the side end of the insulation under the bend of the
two side panels (3 and 4).
D. Fit the rear insulation (7), fix the rear lower panels (9) with
pins and springs and the upper panel (10) with the self
tapping screws (8). Fit the plastic cable clamps (11) to the
upper rear panel (10).
E. Fit the 'Ideal' badge to the front edge of the front top panel
(12) and secure with the rubber fixings.
F. Fit the control panel to front top panel (12). Remove the
upper shell of the control panel and insert the capillaries of
thermometer and thermostats through the slots.
G. Insert the thermometer and thermostat bulbs in the bulb
holders as shown in Frame 16 and connect the mains, the
burner, the pump(s) and any equipment to the control
panel.
Refit the upper shell of the control panel.
Guide the burner plug through the side cable clamp plate
(5) on the left or right side opposite the burner door hinge
and clamp the cable using the cable clamp supplied.
Fix the side cable clamp plates to the casing side panels.
Fit the cables leaving the boiler from the rear panel, with the
plastic screws of the cable clamps (11).
H. Position the top panels (13 and 14) and press them
against the side panels.
I. Remove the protective paper film from data plate and
ventilation requirement label (15 and 16) and fit them at the
top front corner of the most accessible side panel after
removal of dust from the surface.
Data plate and ventilation requirements labels are in the
plastic bag containing the documents.
INSTALLATION

18
Vanguard L - Installation & Servicing
INSTALLATION
2
5
6
3a
3b
9
10
11
7
8
4a 5
1
4b
12
13
van 5712
18 CASING ASSEMBLY
Vanguard L 1100 to 2200
For these boiler models the casing and insulation are
contained in 3 cartons.
Assembly of the casing should be carried out in the following
steps:
Refer to diagram below for details
A. Fit the insulation blanket (1) onto the boiler shell and
secure into place using the elasticated straps (2) provided,
ensuring that the metal clips grip into the external surface
of the insulation.
B. Locate the side panels (3) and (4) with the lower bend
inside the bottom L profiles and the upper bend inside the
upper L profile. The head of the self tapping screw fixed to
the L profile has to coincide with the slot on the bend of the
side panel.
To determine which is the left and right panel ensure that
the cable clamp plate (5) is positioned toward the front
edge.
C. Open the combustion chamber door and fit the front
insulation (6), inserting the hinges in the precuts.
D. Fit the rear upper panel (7), and fit the plastic cable clamps
(8) to it.
E. Fit the 'Ideal' badge to the front edge of the front top panel
(9) and secure with the rubber fixings.
F. Fit the control panel to front top panel (9). Remove the
upper shell of the control panel and insert the capillaries
of thermometer and thermostats through the slots.
G. Insert the thermometer and thermostat bulbs in the bulb
holders as shown in Frame 21 and connect the mains, the
burner, the pump(s) and any equipment to the control
panel.
Refit the upper shell of the control panel.
Guide the burner plug through the side cable clamp plate
(5) on the left or right side opposite the burner door hinge
and clamp the cable using the cable clamp supplied.
Fix the side cable clamp plates to the casing side panels.
Fit the cables leaving the boiler from rear panel, with the
plastic screws of the cable clamps (8).
H. Position the top panels (10 and 11) and press them
against the side panels.
I. Remove the protective paper film from data plate and
ventilation requirement label (12 and 13) and fit them at
the top front corner of the most accessible side panel after
removal of dust from the surface.
Data plate and ventilation requirements labels are in the
plastic bag containing the documents.
INSTALLATION

19
Vanguard L - Installation & Servicing
INSTALLATION
14
5
3a
3b
3c
9
8
12
11
2
14a
4b
4c
5
6
7
13
10
15
van 5713
19 CASING ASSEMBLY
Vanguard L 2650
For this boiler model the casing and insulation are contained
in 4 cartons.
Assembly of the casing should be carried out in the following
steps:
Refer to diagram below for details.
A. Fit the insulation blanket (1) onto the boiler shell and
secure into place using the elasticated straps (2)
provided, ensuring that the metal clips grip into the
external surface of the insulation.
In order to fit the bulb holders in the upper part of the shell
a cut has to be made.
B. Locate the side panels (3) and (4) with the lower bend
inside the bottom L profiles and the upper bend inside the
upper L profile. The head of the self tapping screw fixed to
the L profile has to coincide with the slot on the bend of
the side panel.
To determine which is the left and right panel ensure that
the cable clamp plate (5) is positioned toward the front
edge.
C. Fit the rear upper panel (6), and fit the plastic cable
clamps (7) to it.
D. Open the combustion chamber door and fit the front
insulation (15), inserting the hinges in the pre-cuts.
E. Fit the 'Ideal' badge to the front edge of the front top panel
(8) and secure with the rubber fixings.
F. Fit the control panel to front top panel (8). Remove the
upper shell of the control panel and insert the capillaries of
thermometer and thermostats through the slots.
G. Insert the thermometer and thermostat bulbs in the bulb
holders as shown in Frame 21 and connect the mains, the
burner, the pump(s) and any equipment to the control
panel.
Refit the upper shell of the control panel.
Guide the burner plug through the side cable clamp plate
(5) on the left or right side opposite the burner door hinge
and clamp the cable using the cable clamp supplied.
Fix the side cable clamp plates to the casing side panels.
Fit the cables leaving the boiler from the real panel with the
plastic screws of the cable clamps (7).
H. Position the top panels (9 and 10) and press them against
the side panels.
I. Fit the support (11) positioning it under the rear side of the
top panels (9 and 10).
J. Fit the rear top panels (12 and 13) and press them against
the side panels.
K. Remove the protective paper film from data plate and
ventilation requirement label (14 and 15) and fit them at the
top front corner of the most accessible side panel after
removal of dust from the surface.
Data plate and ventilation requirements labels are in the
plastic bag containing the documents.
INSTALLATION

20
Vanguard L - Installation & Servicing
INSTALLATION
20 CASING ASSEMBLY
Vanguard L 3000 to 3500
For these boiler models the casing and insulation are
contained in 3 cartons.
Assembly of the casing should be carried out in the following
steps:
Refer to diagram below for details
A. Fit the insulation blanket (1) onto the boiler shell and
secure in to place using the elasticated straps (2) provided,
ensuring that the metal clips grip into the external surface
of the insulation.
Make a convenient cut in the upper part of the insulation
blanket to get easy access to the bulb holders.
B. Position the L.H. side panels (2 & 3) with the lower bend
inside the bottom L profiles and hook them to the screws
fitted to the upper square tube.
To determine which one of the front side panels is the left
or the right ensure that the cable clamp plates (7) are
positioned facing toward the front edge.
C. Position the R.H. side panels (6 and 3) with the lower bend
inside the bottom L profiles and hook them to the screws
fitted to the upper square tube.
To determine which one of the front side panels is the left
or the right ensure that the cable clamp plates (7) are
positioned facing toward the front edge.
D. Fit the control panel board to the left or right front side
panel. Remove the upper shell of the control panel and
insert the capillaries of the thermometer and thermostats
through the slots.
E. Insert the thermometer and thermostat bulbs in the bulb
holders as shown in Frame 22 and connect the mains, the
burner, the pump(s) and any equipment to the control
panel.
Refit the upper shell of the control panel.
Guide the burner plug through the side cable clamp plate
(7) on the left or the right side opposite the burner door
hinge and clamp the cable using the cable clamp
supplied. Fix the side cable clamp plates (5) to the casing
side panels (2 & 6).
F. Remove the protective paper film from data plate and
ventilation requirement label (8 and 9) and fit them at the
top front corner of the most accessible side panel after
removal of dust from the surface.
Data plate and ventilation requirements label are in the
plastic bag containing the documents.
van7043
INSTALLATION