Navien NFB-175H, Руководство по установке, Страница: 102 / 135

102 Operating the Boiler
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
Item Description
3. Zone Priority
Settings
Set the zone priority.
●
Setting range: Enable /
Disable
●
Default: Disable
If “3. Zone Priority
Settings” is enabled, the
default zone priorities are
set as follows.
●
When “2-1. Pump 1
Settings” is set to “Zone
1 Pump”:
- Priority 1: Zone 1
- Priority 2: Zone 2
- Priority 3: Zone 3
●
When “2-1. Pump 1
Settings” is set to “DHW
Pump”:
- Priority 1: Zone 2
- Priority 2: Zone 3
- Priority 3: -- (None:
DHW Pump)
Note
●
The number of priorities
for the zones differs
depending on the set
pump 1 type (2-1. Pump 1
Settings).
●
If you change the pump
1 type (2-1. Pump 1
Settings), the set priorities
will be initialized.
●
If you change the zone
settings (2. Zone Settings),
the set priorities will be
initialized.
●
If “5. Navien zone cont.” is
enabled, “3. Zone Priority
Settings” will be disabled
and you cannot set the
zone priority.
●
If “21. Outdoor Reset” is
enabled, “3. Zone Priority
Settings” will be disabled.
4. Outdoor Reset
ON/OFF
Enable or disable the
Outdoor Reset Control
feature (Default: Enabled).