Navien NHB H Series, Инструкция по установке и эксплуатации

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106 Operating the Boiler
Item Description
6. SH Control
Method
Select a heating control
type.
1: Supply Temperature
2: Return Temperature
3: Sys Supply
Temperature
4: Sys Return
Temperature
●
Default: Supply
Temperature
Note
This menu is not available
when connecting the AHU
communication type or
cascade mode because
heating is performed only
by controlling the heating
supply water.
* Available only when “4. Outdoor Reset ON/OFF” is set to
“Enabled”.
** A preset or user defined temperature range is set
automatically based on the curve selected. Refer to the
settings table for details.
Heat Load
Supply Set
Point Range Return Set
Point Range
Remarks
1. Finned
Tube
Baseboard
120–180°F
(48.5–82°C) 101–147°F
(38–63.5°C)
Default
2. Fan Coil
140–180°F
(60–82°C) 116–147°F
(46.5–63.5°C)
3. Cast Iron
Baseboard
100–170°F
(37.5–76.5°C) 86–139°F
(30–59°C)
4. Low Mass
Radiant
80–140°F
(26.5–60°C) 70–116°F
(21–46.5°C)
5. High Mass
Radiant
80–120°F
(26.5–48.5°C) 70–101°F
(21–38°C)
6. Radiators
120–170°F
(48.5–76.5°C) 101–139°F
(38–59°C)
7. Custom
104–180°F
(40–82°C) 86–149°F
(30–65°C) User-
defined
Heat loads 1-6 show the preset temperature ranges
based on the load type selected, while heat load 7
provides a custom temperature range. When the custom
temperature range is in use, the boiler operates based
on the user–defined “Absolute Min” and Absolute Max”
temperature settings.
*** The boost interval time may be set to prevent
interruption in space heating while using the Outdoor
Reset Control mode, due to changes in heat load
conditions. With the boost interval time enabled, the
boiler increases the space heating supply temperature
by 9°F (5°C) and the return temperature by 5°F (3°C)
after a set time elapses.
Once the boost interval time expires or the heat load
demand is satisfied, the boiler will then revert back to
its normal space heating settings.
Item Description
4-1. Outdoor Reset
Curves
Select a heatload type
for the Outdoor Reset
Control.
1: Finned Tube Baseboard
2: FAN Coil
3: Cast Iron Baseboard
4: Low Mass Radiant
5: High Mass Radiant
6: Radiator
7: Custom (set by
installer)
4-2. Outdoor High
Temp Set
Set the maximum
temperature for the
Outdoor Reset Control.
●
Setting range: [MIN
Set-point + 9°F (5°C)] –
104°F (40°C)
●
Default: 70°F (21°C)
4-3. Outdoor Low
Temp Set*
Set the maximum
temperature for the
Outdoor Reset Control.
●
Setting range: -4°F
(-20°C) – [MAX Set-point
– 9°F (5°C)]
●
Default: 14°F (-10°C)
4-4. WWSD Temp
Set the Warm Weather
Shut-down temperature.
●
Setting range: OFF, 50°F
(10°C) – 104°F (40°C)
●
Default: OFF
4-5. WWSD On Diff
Set the differential
temperature to deactivate
the Warm Weather Shut-
down.
●
Setting range: 0°F (0°C)
– 36°F (20°C)
●
Default: 5°F (3°C)
4-6. Boost Interval
Time
Set the boost interval
time.
●
Setting range: 0 – 120
min
●
Default: 0 min
5. Navien zone cont.
Enable or disable heating
zones utilizing the Navien
Zone Controller.
●
Setting range: Enabled/
Disabled
●
Default: Disabled