4
Procombi Exclusive
-
Installation and Servicing
general
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 ft
3
/h
- divide the gross heat input (Btu/h)
by the gross C.V. of the gas (Btu/ft
3
)
c. 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.
procombi Exclusive
Series II
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
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
146
152
177
Fuse Rating
External : 3A Internal : T4H 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 (lb)
34.6 (76.3)
34.7 (76.5)
34.8 (76.7)
Maximum Installation Weight
kg (lb)
30.85 (68)
30.95 (68.2)
31.05 (68.4)
Boiler Casing Size
Height
mm (in)
700 (27.5)
Width
mm (in)
395 (15.5)
Depth
mm (in)
285 (11.2)
Table 1 - general Data
*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
(Btu/h) (82,900)
(103,600)
(120,900)
Gross CV
kW
27.0
33.7
39.3
(Btu/h) (92,000)
(115,000)
(134,200)
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 Output
(Btu/h) (82,600)
(103,300)
(120,500)
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
(Btu/h) (82,900) (16,600) (20,700) (24,100)
Gross CV
kW 27.0
5.4
6.7
7.9
(Btu/h) (92,000) (18,400) (23,000) (26,900)
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
70
o
C Mean Water temp. (Btu/h) (82,600) (16,500) (20,700) (24,100)
Condensing
kW 25.6
5.1
6.4
7.5
40
o
C Mean Water temp. (Btu/h) (87,400) (17,500) (21,800) (25,500)
Seasonal efficiency* SEDBUK 2005
91%
91.1%
91%
Seasonal efficiency* SEDBUK 2009
89%
89%
88.9%
NOx Classification
CLASS 5
Table 2 - performance Data - Central heating
Table 3 - performance Data - Domestic hot Water
