IDEAL Viscount GTE 14 Guide

Viscount GTE
Installation, Assembly and Servicing
Oil, Gas or Dual Fuel Fired Boilers
Assembly and Installation Instructions for Ideal Viscount Oil, Gas or Dual Fired heating boilers should be read in conjunction with the
general technical data tables enclosed and any other technical publication supplied with the burner.
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.
94863157 - 85254022 A, 05/01

2Ideal Viscount GTE - Installation, Assembly & Servicing
Contents
1. General ........................................................................ 2
1.1 Technical Specifications of Combination Boilers .. 3
1.2 Main Dimensions .................................................. 4
2. Installing The Boiler ................................................... 5
2.1 Boiler Location ...................................................... 5
2.2 Ventilation ............................................................. 5
3. Assembly .................................................................... 5
4. Hydraulic Connections .............................................. 6
4.1 Dimensional Information Required ....................... 6
4.2 Installation Recommendations ............................. 6
4.3 Filling the System ................................................. 7
4.4 Sludge Removal ................................................... 7
5. Chimney Connection ................................................. 7
5.1 Flue Size ............................................................... 7
5.2 Connecting to the Flue ......................................... 8
6. Assembly of Viscount GTE Boilers .......................... 9
7. Control Panel ............................................................ 41
7.1 Standard ............................................................. 41
7.2 Deluxe ................................................................. 47
8. Fuel-Oil or Gas Connections .................................. 54
9. Servicing and Maintenance ..................................... 54
9.1 Cleaning .............................................................. 54
9.2 Cleaning the Casing Material ............................. 57
9.3 Precautions Required in the Case of Long ......... 57
Boiler Stops (one or more years)
9.4 Precautions Required if the Heating is ............... 57
Stopped when there is a Risk of Freezing
10. Burner Maintenance .............................................. 57
11. System Maintenance .............................................. 57
11.1 Water Level ....................................................... 57
11.2 Draining ............................................................. 57
12. Identification Plate ................................................. 57
1. GENERAL
The boilers of the Viscount GTE range are pressurised hot water
boilers designed for connecting to a flue pipe which require a
separate automatic fuel-oil or gas burner. The heat output of
Viscount GTE boilers is between 754 and 1450 kW.
Models available :
•Viscount GTE
Boiler with standard control panel designed to be connected
to the electrical cabinet.
•Viscount GTE De Luxe
Boiler with “De Luxe” control panel, providing additional
features including running lights and extra wiring facilities.
Option Kits:
Flue Gas Thermometer Pack ID28
Hour Run Meter Pack IC8
M.T.H.W. Kit Pack CM21
WARNING
The boiler shall be assembled and installed by a qualified professional only.
Strict compliance with these assembly, installation and maintenance instructions is a precondition for the correct
operation of the boiler
CONFORMITY / MARKING
This Product complies with the requirements of the following European directives and standards:
- 90.396 CEE Gas Appliance Directive Relevant standard : EN 303.1 / EN 303.2 / EN 304.
- 73.23 CDD Low Voltage Directive Relevant standard : EN 60.335.1.
- 89.336 CEE Electromagnetic Compatibility Directive Relevant standard : EN 50.081.1 / EN 50.082.1 / EN 55.014.
30
0
I
0
I
VIS5054
30
0
I
VIS5055

Ideal Viscount GTE - Installation, Assembly & Servicing 3
1.1 Technical Specifications of Combination Boilers
Boiler:
Maximum operating pressure : 6 bar
Maximum operating temperature : 100ºC
Notes:
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.
The gas rate at calorific values differing from the standard quoted
above may be calculated by direct proportion. CALORIFIC VALUE:
38.5 MJ/m3(1,035 Btu/ft3).
Boiler thermostat setting 30 - 85ºC
Safety thermostat setting 110ºC
Boiler Size (no. of sections)
Maximum heat output
Minimum heat output
Boiler water content
Hydraulic resistance at 15K
Combustion chamber
Resistance (at zero draught)
Boiler Dry weight less
Burner unit
Maximum oil rate
Maximum flue gas volume (oil)*
Maximum gas rate
Maximum flue gas volume (gas)*
14
812
2770
754
2573
655
144
30
12
2.3
0.92
3045
6713
82.73
18.2
0.51
1081
84.4
2980
0.57
1208
15
870
2968
812
2770
693
152
34.7
13.8
2.4
0.96
3249
7162
88.64
19.5
0.55
1166
90.4
3192
0.61
1293
16
928
3166
870
2968
731
161
14
5.6
2.5
1
3422
7544
94.55
20.8
0.59
1250
96.4
3403
0.65
1377
17
986
3364
928
3166
769
169
15
6
2.6
1.04
3601
7938
100.5
22.1
0.62
1314
102.4
3616
0.69
1462
18
1044
3562
986
3364
807
177
17.5
7
2.7
1.08
3780
8333
106.4
23.4
0.66
1399
108.5
3831
0.73
1547
19
1102
3760
1044
3562
845
186
19
7.6
2.85
1.14
3949
8706
112.3
24.7
0.70
1483
114.5
4043
0.77
1632
20
1160
3958
1102
3760
905
199
21.5
8.6
3
1.2
4181
9217
118.2
26
0.73
1547
120.5
4255
0.81
1717
21
1218
4156
1160
3958
943
207
23.7
9.5
3.1
1.24
4355
9601
124
27.3
0.77
1632
126.5
4466
0.85
1801
22
1276
4354
1218
4156
981
216
26
10.4
3.2
1.28
4539
10,006
130
28.6
0.81
1717
132.5
4678
0.89
1886
23
1334
4552
1276
4354
1019
224
28.3
11.3
3.3
1.32
4708
10,379
135.9
29.9
0.84
1780
138.6
4894
0.94
1992
24
1392
4749
1334
4552
1057
232
31
12.4
3.4
1.36
4890
10,780
142
31.2
0.88
1865
144.6
5106
0.98
2077
25
1450
4947
1392
4749
1095
241
33.5
13.4
3.5
1.4
5062
11,159
147.7
32.5
0.92
1950
150.6
5317
1.02
2162
kW
Btu/h x 103
kw
Btu/h x 103
I
gal
mbar
in.w.g.
mbar
in.w.g.
kg
lb
I/h
gal/h
m3/sec
ft3/min
m3/h
ft3/h
m3/sec
ft3/min
* 13% CO2 at 210C
* 9.5% CO2 at 210C

4Ideal Viscount GTE - Installation, Assembly & Servicing
GENERAL
1.2 Main Dimensions Viscount GTE
Min. height for sweeping = 850
Flow detector
1566
543
496
370 ØF
815
1080
200
420
616
R
791
565
17,5
S
3/4"
140
370
208208
240
Max.
500 Max. 700
Burner centre line
610
U
B
MH
K
ØE
LG
P
A
D
T
ØE
300
223
100
C741
1172
The sizes are given in mm
Plain plate, requires cutting. Maximum
cut-out 500 x 700m
Length required for clearing the
water distributing tube
Dimension representing the end of the
100 mm long chimney connection
Note: with models 21, 22, 23, 24 and
25, a plain plate which must be cut out
is supplied without the 100 mm
chimney connection.
*
G=
**
VIS5056
A (mm)
B (mm)
C (mm)
D (mm)
Ø E (weld)
Ø F (mm)
G (mm)
H (mm)
K** (mm)
L (mm)
M (mm)
De Luxe
Standard
De Luxe
Standard
De Luxe
Standard
T (mm)
U (mm)
GTE Boiler
1674
1744
1488
217
139.7
450
-
-2
10
2105
259
355
130
175
20
1760
1670
1483
2132.5
14
1785
1744
1488
188
139.7
450
150
-31
-19
2245
324
355
130
175
20
1760
1670
1594
2243.5
15
1896
1966
1488
189
139.7
450
150
-30
-18
2355
269
355
130
175
20
1760
1670
1705
2354.5
16
2007
1966
1488
210
139.7
500
370
-9
3
2445
321
355
130
175
20
1760
1670
1816
2465.5
17
2118
2188
1504
236
159
500
370
-8
4
2555
265
355
130
175
20
1760
1670
1927
2576.5
18
2229
2188
1504
257
159
500
370
13
25
2645
299
355
130
175
20
1760
1670
2038
2687.5
19
2380
2450
1504
208
159
500
650
-36
-24
2845
269
355
130
175
20
1760
1670
2189
2838.5
20
2491
2450
1504
209
159
*
650
-35
-23
2955
324
355
130
175
20
1760
1670
2300
2949.5
21
2602
2672
1504
230
159
*
650
-14
-2
3045
269
355
130
175
20
1760
1670
2411
3060.5
22
2713
2672
1504
231
159
*
980
-13
-1
3155
324
355
130
175
20
1760
1670
2522
3171.5
23
2824
2894
1504
252
159
*
980
8
20
3245
249
355
130
175
20
1760
1670
2633
3282.5
24
2935
2894
1504
253
159
*
980
9
21
3355
303
355
130
175
20
1760
1670
2744
3393.5
25
P (mm)
R (mm)
S (mm)

Ideal Viscount GTE - Installation, Assembly & Servicing 5
INSTALLATION
2. INSTALLING THE BOILER
2.1 Boiler Location
For the assembly and because of their design, GTE boilers require
no special base or stand and their closed furnace system means
that the floor need not have refractory properties. All you have to
ensure is that the floor can support the weight of the boiler when it
is fitted for operation. If the boiler location is not determined precisely,
leave enough space around the boiler to facilitate monitoring and
maintenance operations.
B
L
M
C
A’
A
0.85 m
min.
0.281m
1.566 m
1.172m
0.195 m
Air outlet
Air inlet
VIS5057
2
1
300
Boiler
body
D min.
(1)
VIS5058
1. Straight connection (not supplied)
2. Angled connection (not supplied)
(1) In order to facilitate subsequent work on the boiler
(replacing the water distributing tube etc.) use a flanged
connection from the boiler to the system, making sure you
comply with minimum clearance dimension D.If A = 1.2 m (door opening side), A’ = 0.5 m
If A = 0.5 m, A’ = 1.2 m (door opening side) : adapt the dimensions
on the basis of the dimensions of the burner when the door is
open.
B = 1.5 m : adapt the dimensions on the basis of the dimensions
of the burner.
GTE 14 15 16 17 18 19 20 21 22 23 24 25
L 2105 2245 2355 2445 2555 2645 2845 2955 3045 3155 3245 3355
M 259 324 269 321 265 299 269 324 269 324 249 303
Cmin. 300 436 436 656 656 656 936 936 936 1266 1266 1266
Dmin. - 136 136 356 356 356 636 636 636 966 966 966
2.2 Ventilation
The ventilation shall comply with applicable regulations, particularly
codes of practice.
Detailed recommendations for air supply are quoted in B.S. 6644.
Please note : remember that boilers installed in or close to rooms
in which the atmosphere is polluted with chlorine or fluorine
compounds may be subject to high corrosion.
For example : hairdressing salons, industrial premises (solvents),
cooling equipment, etc.
Boiler installed in such locations shall not be covered by the warranty.

6Ideal Viscount GTE - Installation, Assembly & Servicing
ASSEMBLY
3. ASSEMBLY
For boiler assembly refer to relevant later pages of this instruction book.
4. HYDRAULIC CONNECTIONS
4.1 Dimensional Information Required
C
1080mm
200mm
H*
D
Heating return:
- 14 to 17 sections : 139.7 - 5"
- 18 to 25 sections : 159 - 6"
requires welding
Draining outlet
3/4" tap
Heating outlet:
- 14 to 17 sections : 139.7 - 5"
- 18 to 25 sections : 159 - 6"
requires welding
* dimension without connection
(see figure on page 5,
connection 1 or 2)
VIS5059
GTE 14 15 16 17 18 19 20 21 22 23 24 25
C (mm) 1488 1488 1488 1488 1504 1504 1504 1504 1504 1504 1504 1504
D (mm) 217 188 189 210 236 257 208 209 230 231 252 253
H (mm) -2 -31 -30 -9 -8 13 -36 -35 -14 -13 8 9
4.2 Installation Recommendations
The installation of the boiler MUST be in accordance with the
following British Standards and Codes of Practice:
BS. 799 Pts. 4, 5, 6 & 7 Oil Burning Equipment
BS. 5410 Pts. 2 & 3 Installations for Space Heating and Hot
Water Supply
BS. 5449 PT. 1 Hot Water Systems
BS. 5854 Flues and Flue Structures in Buildings
BS. 5885 Pt. 1 Gas Burners - with outputs of 60kW
upwards
BS. 6644 Installation of Gas Fired Boilers
BS. 6880 Low Temperature Hot Water
Heating Systems
BS. 6891 Low Pressure Gas Pipework
British Gas Industrial Gas Fired Boilers and
Publication No. IM.11 Air Heaters
General
Recommendations relating to the water system are contained in
BS. 5449 Pt. 1, BS. 1, BS. 5401 Pt.2, and BS. 6880.
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.
All electrical wiring MUST comply with the current I.E.E. regulations
for the electrical equipment of buildings. 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.

Ideal Viscount GTE - Installation, Assembly & Servicing 7
ASSEMBLY
4.3 Filling the System
Filling shall be performed with a low flow rate from a low point in the
boiler room in order to ensure that all the air in the boiler is bled
from the high point of the system.
Always stop the pump before filling.
VERY IMPORTANT :
Instructions for starting up the boiler for the first time after the
system is fully or partly drained :
NOTE:
Never replace a boiler in an existing system
without carefully rinsing the system first. Install a
sludge trap on the return pipe, very close to the
boiler.
If all the air is not bled naturally to an expansion vessel which opens
out onto the air, the system must include manual bleeder valves, in
addition to automatic bleeder valves with the capability to bleed the
system by themselves when it is operating. The manual bleeder
valves are used to bleed all the high points of the system and to
make sure that the filled system is free of air before the burner is
turned on.
General
Recommendations relating to the water system are contained in
BS. 5449 Pt. 2 and BS. 6880.
4.4 Sludge Removal
A tapped ø 2" hole with a plug has been provided on the bottom of
the front of the boiler. Fit a quarter-turn valve on the opening to
remove the sludge.
Sludge removal leads to the draining of large quantities of water, so
remember to refill the system after the operation.
586mm
150mm
2" tapped sludge
removal hole
VIS5060
5. CHIMNEY CONNECTION
The high-performance features of modern boilers and their use in
specific conditions as a result of the advance in burner technology
(e.g. first-stage or low modulation range operation) lead to very low
flue gas temperatures (less than 160°C).
This requires :
- Flue insulation.
- the use of flue pipes designed to enable the flow of
condensates which may result from such operating modes,
in order to prevent damage to the chimney.
- the installation of a draining tee at the foot of the chimney.
The use of a draught moderator is recommended as well.
5.1 Flue Size
Refer to applicable regulations while determining the size and height
of the flue. Please note that GTE boilers have pressurised and tight
furnaces and that the pressure at the outlet must not exceed 0 mbar,
unless special sealing precautions have been taken, for instance in
order to connect a static condenser.
Detailed recommendations relating to the design of flues for GAS
fired appliances are quoted in BS. 6644 and British Gas Publication
No. IM11, whilst BS. 5410 Pt. 3 similarly applies to OIL fired boilers.

8Ideal Viscount GTE - Installation, Assembly & Servicing
ASSEMBLY
5.2 Connecting to the flue
The connection shall be removable, and offer minimum load losses,
i.e. it must be as short as possible with no sudden change in section.
Its diameter shall always be at least equal to that of the boiler outlet,
i.e. :
- ø 450 mm for 14-16 sections
- ø 500 mm for 17-20 sections
- Boilers with 21-25 sections are supplied with a plain plate.
The maximum cutout dimensions are 500 x 700 mm.
Fit a measuring point (ø 10 mm hole) on the flue, in order to adjust
the burner (combustion check).
815mm
F Øchimney
connection
586mm 586mm
K
VIS5061
GTE 14 15 16 17 18 19 20 21 22 23 24 25
ø F (mm) 450 450 450 500 500 500 500
K (mm) 10 -19 -18 3 4 25 -24 -23* -2* -1* 20* 21*
plain
plate plain
plate plain plate plain plate Plain plate
* Dimension representing the end of the 100 mm long chimney connection.
Note: with models 21, 22, 23, 24 and 25 a plain plate which requires cutting out is supplied without the 100 mm long chimney connection.

Ideal Viscount GTE - Installation, Assembly & Servicing 9
ASSEMBLY
6. ASSEMBLY OF VISCOUNT GTE BOILERS
IMPORTANT
Important : Assemble the boiler in the
order given by the numbers of each figure,
in compliance with all the instructions.
Packaging :
Before starting to assemble the boiler, refer to the table below to
check if you have received all the packages required.
Boiler Body and Accessories
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Assembled boiler body (contents depend upon model) 111111111111
Cleaning tool kit (contents depend upon model) 111111111111
•Boilers supplied with an assembled body: start assembly from figure 11
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Frame (dimensions depend upon model) 111111111111
Rear section 111111111111
Normal intermediate section 9 10 11 12 13 14 14 15 16 17 18 19
Special intermediate section 333333444444
Front section 111111111111
Set of assembly rods + cleaning tools 111111111111
(contents depend upon model)
Standard accessory kit 1 package
(contents depend upon model)
Additional accessory kit 1 package
(contents depend upon model)
Plain furnace plate 111111111111
Flue gas connection plate ø 450 1 1 1
with opening ø 500 1 1 1 1
Plain flue gas connection plate 1 1 1 1 1
Flue gas box 111111111111
Distributing tube fitting * 111111
Flow switch and technical instructions 111111111111
•Boilers supplied with an unassembled body:
* The distributing tube fitting for GTE boilers with 15 -19 sections is included in the accessory package.
** The diaphragm fitting for GTE boilers with 14 sections is included in the additional accessory kit package.
FA 49
FA 50* FA 51* FA 52* FA 53* FA 54*
FA 55 FA 56 FA 57 FA 58 FA 59 FA 60
FA 68**
FA 69 FA 70 FA 71 FA 72 FA 73 FA 74 FA 75 FA 76 FA 77 FA 78 FA 79
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Baffle Plates Package CM 22 11111
Package CM 23 111111222222
•Baffle Plates
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Casing Fittings Package FA 5 1111
Package FA 6 1 1 111111
Package FA 7 1
Package FA 8 1 1 1 1 1 1
Package FA 9 1 1 1 1 1
Package FA 10 2 2 1 2 2 1 1
Package FA 11 222112332233
•Casing Fittings

10 Ideal Viscount GTE - Installation, Assembly & Servicing
ASSEMBLY
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Package FA 16 1 1 1 11111
Package FA 17 1
Package FA 18 1
Package FA 19 1
Package FA 20 1
Package FA 21 1
Package FA 22 1
Package FA 23 1
Package FA 24 1 1
Package FA 25 1
Package FA 26 1
Package FA 27 1
•Variable Casing Parts
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Body insulating material Package FA 34 1
Package FA 35 1
Package FA 36 1 1
Package FA 37 1 1
Package FA 38 1
Package FA 39 1 1
Package FA 40 1 1
Package FA 41 1
•Body Insulating Material
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Standard control panel Package FA 3 1 1 1 111111111
De Luxe control panel Package FA 2 1 1 1 111111111
•Control Panel
GTE boiler Number of sections 14 15 16 17 18 19 20 21 22 23 24 25
Burner plate with 165, 186, 210, 240 or 295 ø hole 1 1 1 111111111
Smokehood plate with 400 ø opening or plain smokehead plate 111111111111
•Accessories Available as an Option*
Tools Required:
- JD-TE or JD-TE Plus assembly tool (+ extension for GT 22
or larger)
- Flat screwdriver
- No. 2 Pozidrive screwdriver
- 10, 13, 17 and 19 mm spanners
- 2mm tubular box spanner
- 27 mm tubular box spanner
- electric screwdriver + No. 2 Philips bit
- Stanley knife
- Silicone filler (supplied)
•If the boiler is supplied with an assembled body, start
assembly from Figure 29.
•Assemble the boiler body from the rear to the front:
- assemble the rear section,
- assemble all the normal intermediate sections,
- assemble all the special intermediate sections,
- assemble the front section.