Air Supply; Combustion Ventilation; Cooling Ventilation - Lochinvar ECOKNIGHT EKW46CE Installation Manual
Floor standing gas fired condensing
circulating type water heater
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11.0
AIR SUPPLY
The following information is based on single water heater installations only. If more than one water heater is being used, BS5440-2
or BS6644 (as appropriate) should be consulted to calculate the necessary requirements.
11.1
COMBUSTION VENTILATION
When used as a Type C (room sealed) appliance, provided sufficient clearance is provided, ventilation for combustion is not
necessary as the combustion air is ducted directly from outside.
When used as a Type B (open flue) appliance, the combustion air requirements are as follows:
Gross
Input
Model
(kW)
EKW46CE
43.9
EKW61CE
58.6
11.1.1
COMBUSTION VENTILATION REQUIREMENTS EKW46CE – EKW61CE
Input
Input
Model
(Gross)
(Net)
kW
kW
EKW86CE
83.5
75.3
11.1.2
COMBUSTION VENTILATION REQUIREMENTS EKW86CE
11.2
COOLING VENTILATION
When used as a type C (room sealed) appliance, installed in a compartment or an enclosure, as shown in Figure 5.2.1, cooling
ventilation should be provided as follows:
Input
Model
(Gross)
kW
EKW46CE
43.9
EKW61CE
58.6
EKW86CE
83.5
11.2.1
COOLING VENTILATION REQUIREMENTS
When used as a type B (open flue) appliance, provision for cooling ventilation is included in the combustion ventilation allowance.
Net
Ventilation
Input
(Room)
(kW)
(cm
)
2
39.6
165
52.8
230
Plant Room
Low
Medium
Summer Use
Summer Use
High
Low
High
Low
(cm
)
(cm
)
(cm
)
(cm
)
2
2
2
2
152
304
228
380
Enclosure/Compartment
Input
(Direct to Outside)
(Net)
kW
High
Low
(cm
)
(cm
2
39.6
200
52.8
265
75.3
380
Compartment
(Direct to Outside)
High
Low
(cm
)
(cm
)
2
2
200
400
265
530
High
Low
Summer Use
Summer Use
High
Low
High
Low
(cm
)
(cm
)
(cm
)
(cm
2
2
2
304
456
380
760
Enclosure/Compartment
(To Internal Space)
High
Low
)
(cm
)
(cm
2
2
200
400
400
265
530
530
380
760
760
Compartment
(To Internal Space)
High
Low
(cm
)
(cm
)
2
2
400
800
530
1060
Enclosure
Medium
High
Summer Use
Summer Use
High
Low
High
Low
)
(cm
)
(cm
)
(cm
)
(cm
2
2
2
2
456
836
532
Water heater Room
High
Low
)
(cm
)
(cm
2
2
2
N/A
N/A
N/A
N/A
152
152
)
2
912
)
38
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