Navien NCB-24LDWE, Руководство по установке и эксплуатации

Страница: 46 / 72

46 O perating the Boiler
Setting the Pump Overrun Time
Display Description
Pu m p overrun ti m e ( m in)
The pu m p overrun ti m e is the duration the circulation pu m p
continues to run between the space heating supply or return
te
m perature reaching the set point and the burner turning off. I f
the space heating supply or return te m perature re m ains outside
of the boiler operation te m perature range for a set period, the
pu m p stops for 10 m ins, runs again for 5 m ins, and then repeats
the cycle.
Ɣ
Default: 40 m inutes
Ɣ
Range: 3–40 m inutes
Setting the DHW Max Heat Capacity
Display Description
DHW m ax heat capacity (%)
This m enu is used to configure the desired DHW capacity. When
the boiler operates in the Nor m al m ode, the m ax DHW capacity
is li m ited to the set value (%).
DHW Max Heat Capacity Setting Range
Range Remarks
[DHW M in Heat Capacity set
point + 20%] – 100%
Default: 100%
Setting the DHW Min Heat Capacity
Display Description
DHW m in heat capacity (%)
This m enu is used to configure the desired DHW capacity. When
the boiler operates in the Nor m al m ode, the m in DHW capacity
is li m ited to the set value (%).
DHW Min Heat Capacity Setting Range
Range Remarks
DHW M in Heat Capacity –
[DHW M ax Heat Capacity set
point - 20%]
Default: DHW M in Heat
Capacity (%)
Setting the Min Heat Capacity for Space Heating
Display Description
Space heating m in heat
capacity (%)
This m enu is used to configure the desired space heating
capacity. When the boiler operates in the Nor m al m ode, the m in
space heating capacity is li m ited to the set value (%).
Space Heating Min Heat Capacity Setting Range
Range Remarks
Space Heating M in Heat
Capacity – [Space Heating M ax
Heat Capacity set point - 20%]
Default: Space heating m in
heat capacity (%)
Setting the Pump Freeze Protection Temperature
Display Description
Pu m p freeze protection
te m perature (°C)
This m enu is used to configure the circulation pu m p freeze
protection te m perature.
When the space heating supply te m perature stays below the set
value for longer than 10 seconds, the boiler runs the circulation
pu
m p to prevent freeze da m age (the pu m p runs for 10 m inutes,
then stops for 1 m inute).
Ɣ
Default: 10°C
Ɣ
Range: 6–10°C
Setting the Anti-fast Cycling Time
Display Description
Anti-fast cycling ti m e ( m in)
The anti-fast cycling ti m e is the duration that the boiler stops
its space heating operation when the space heating supply or
return te
m peratures reach the set values for boiler operation
stop te m peratures. The boiler will not resu m e space heating
until the duration elapses, even when the space heating supply
or return te
m peratures return to within the set ranges.
Ɣ
Default: 3 m inutes
Ɣ Range: 0–20 m inutes