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Morco GB24 Series II Manual

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section 3 - tecHnicAL DAtA
Note. Gas consumption is calculated using a
caloric value of 95.65 MJ/m
3
(2569 Btu/ft
3
)
gross or 88.0 MJ/m
3
(2,360 Btu/ft
3
) nett
To obtain the gas consumption at a different
caloric 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
PMS = Maximum operating pressure of water
C
13
C
33
= 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oriceswhich,inthis
case, are concentric. The fan is up stream of the combustion chamber.
I
3P
= An appliance designed for use on 3rd Family gas, Group P 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certiedbyanotiedbody.
Morco GB Series II 24 30
Gas supply I
3p
- G31 - 37mbar
Gas Supply Connection 15mm copper compression
Injector Size (mm) 3.75 3.75
Inlet Connection Domestic Hot Water G
1
/2
Outlet Connection Domestic Hot Water G
1
/2
Flow Connection Central Heating G
3
/4
Return Connection Central Heating G
3
/4
Flue Terminal Diameter mm (in) 100 (4)
Average Flue Temp-Mass Flow Rate (DHW) 63
o
C - 11g/s 68
o
C - 13g/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)
Electrical Supply 230 V ~ 50 Hz.
Power Consumption W 146 152
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) 33.8 (74.4) 34.1 (75.2)
Maximum Installation Weight kg (lb) 31 (68.3) 31.2 (68.8)
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 ow rate. Boiler operates down to 2 l/min DHW delivery
Maximum DHW Input : 24 30
Nett CV kW 24.3 30.4
Btu/h 82,912 103,725
Gross CV kW 26.4 33
Btu/h 90,077 112,596
Gas Consumption m
3
/h 1.00 1.25
ft
3
/h 35.33 44.20
kg/hr 1.83 2.26
Maximum kW 24.2 30.3
DHW Output Btu/h 82,570 103,384
DHW Flow Rate l/min 9.9 12.4
at 35°C temp. rise. gpm 2.2 2.8
DHWSpecicRate l/min 11.5 14.5
gpm 2.5 3.2
Boiler Input : Max. Min.
24 30 24 30
Boiler Input ‘Q’ Nett CV kW 24.3 24.3 8.0 8.0
Btu/h 82,912 82,912 27,296 27,296
Gross CV kW 26.4 26.4 8.7 8.7
Btu/h 90,077 90,077 29,684 29,684
Gas Consumption m
3
/h 1.00 1.25 0.329 0.329
ft
3
/h 35.33 44.20 11.62 11.62
kg/hr 1.83 2.26 0.58 0.58
Boiler Output :
Non Condensing kW 24.2 24.2 8.00 8.00
70
o
C Mean Water temp. Btu/h 82,570 82,570 27,296 27,296
Condensing kW 25.6 25.6 8.5 8.5
40
o
C Mean Water temp. Btu/h 87,347 87,347 29,002 29,002
Seasonalefciency*SEDBUK2005 91% 91.1%
Seasonalefciency*SEDBUK2009 89% 89%
NOxClassication CLASS5
Table 2 - Performance Data - Central Heating
Table 3 - Performance Data - Domestic Hot Water
… 10 …


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  • We have this Boiler fitted in our Caravan and not had a trouble till we had the boiler serviced since then the boiler will deal with the hot water but if you put it onto timer for the central heating the boiler comes in and when it gets to temperature goes out but then when the temperature drops the boiler does not come back in and shows L-2 which means it’s locked out please advice what can be the trouble thankyou Submitted on 10-11-2021 at 19:52

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  • Je voudrais savoir pourquoi s affiche sur l écran de contrôle F 9 qui clignote. Et pas d eau chaude. Submitted on 29-6-2021 at 18:11

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  • Hot water working but no heating and no fault codes Submitted on 12-4-2021 at 18:39

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