Ideal Boilers INDEPENDENT+ COMBI 24, Installation & Servicing

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8
Installation and Servicing
SECTION 1 - GENERAL
24 30 35
Gas supply 2H - G20 - 20mbar
Gas Supply Connection 15mm copper compression
Injector Size (mm) 4.15 4.65 4.9
Inlet Connection Domestic Hot Water 15mm copper tail
Outlet Connection Domestic Hot Water 15mm copper compression
Flow Connection Central Heating 22mm copper compression
Return Connection Central Heating 22mm copper compression
Flue Terminal Diameter mm (in) 100 (4)
Average Flue Temp-Mass Flow Rate (DHW) 63
o
C - 11g/s 68
o
C - 13g/s 73
o
C - 15g/s
CO
2
Content (± 0.7) Max. DHW 9.5% 9.3% 9.5%
Min. CH 8.8% 8.8% 8.9%
Maximum Working Pressure (Sealed Systems) bar (lb/in
2
) 2.5 (36.3)
Maximum Domestic Hot Water Inlet Pressure bar (lb/in
2
) (kPa) 10.0 (145) (1000)
Minimum Domestic Hot Water Inlet Pressure* bar (lb/in
2
) (kPa) 0.8 (11.6) (80) 1.3 (18.9) (130) 1.3 (18.9)** (130)
Electrical Supply 230 V ~ 50 Hz.
Power Consumption W 94 101 114
Fuse Rating External : 3A Internal : T4A HRC L250 V
Water content Central Heating litre (gal) 1.2 (0.26)
Domestic Hot Water litre (gal) 0.5 (0.11)
Packaged Weight kg 33.7 33.8 33.9
Maximum Installation Weight kg 28.9 29 29.1
Boiler Casing Size Height mm 700
Boiler Casing Size Height mm 700
Width mm 395
Depth mm 278
Table 1 - General Data
Note.
Gas consumption is calculated using a calorific value of
38.7 MJ/m
3
(1038 Btu/ft
3
) gross or 34.9 MJ/m
3
(935 Btu/ft
3
) nett
To obtain the gas consumption at a different calorific value:
a. For l/s - divide the gross heat input (kW) by the gross C.V.
of the gas (MJ/m
3
)
b. For Btu/h
- multiply the gross heat input (kW) by 26.8
c. For ft
3
/h - divide the gross heat input (Btu/h) by the gross
C.V. of the gas (Btu/ft
3
)
d. For m
3
/h - multiply l/s by 3.6
Key to symbols
GB
= United Kingdom IE = Ireland (Countries of destination)
PMS
= Maximum operating pressure of water
C
13
C
33
C
53
= A room sealed appliance designed for connection via
ducts to a horizontal or vertical terminal, which admits
fresh air to the burner and discharges the products of
combustion to the outside through orifices which, in
this case, are concentric. The fan is up stream of the
combustion chamber.
I
2H
= An appliance designed for use on 2nd Family gas, Group
H only.
* The value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. The test data from
which it has been calculated have been certified by a notified body.
*Required for maximum flow rate. Boiler operates down to 2 l/min DHW delivery
** In areas of low water pressure the DHW restrictor can be removed
Maximum DHW Input : 24 30 35
Nett CV kW 24.3 30.4 35.4
Gross CV kW 27.0 33.7 39.3
Gas Consumption m
3
/h 2.512 3.135 3.657
(ft
3
/h) (89) (111) (129)
Maximum kW 24.2 30.3 35.3
DHW Flow Rate l/min 9.9 12.4 14.5
at 35°C temp. rise. (gpm) (2.2) (2.8) (3.2)
DHW Specific Rate l/min 11.5 14.5 16.9
(gpm) (2.5) (3.2) (3.7)
Boiler Input : Max. Min.
24 30 35
Boiler Input ‘Q’ Nett CV kW 24.3 4.9 6.1 7.1
Gross CV kW 27.0 5.4 6.7 7.9
Gas Consumption m
3
/h 2.512 0.500 0.627 0.734
(ft
3
/h) (89) (17.8) (22) (25.9)
Boiler Output :
Non Condensing kW 24.2 4.8 6.1 7.1
Condensing kW 25.6 5.1 6.4 7.5
Seasonal efficiency* SEDBUK 2005 91.1% 91.1% 91.1%
Seasonal efficiency* SEDBUK 2009 89.6% 89.6% 89.6%
NOx Classification CLASS 6
Table 2 - Performance Data - Central Heating Table 3 - Performance Data - Domestic Hot Water