QUINCY HYDRONIC TECHNOLOGY SG-3, Инструкция по установке и эксплуатации

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Page 22 Biasi SG Pro Series
Upon power up, the LCD display shows INITIALIZING, then immediately tests the low
water function displaying LOW WATER and flashing. The control then goes into normal
operating mode displaying the current status of the boiler.
Setting the HIGH LIMIT
The high limit is factory set at 190°F. To adjust, press the SET UP button. The screen
will display ADJUST SETTINGS . Then press the HI TEMP ▲ or ▼ buttons to select the
desired high limit. (Setting range: 100°-220°F)
Setting the LOW LIMIT
The low limit is designed to maintain temperature in boilers equipped with tankless coils
used for domestic hot water. The low limit is factory set to OFF and should be left that way for
the SG boiler. If it is necessary to set a low limit temperature, press the
SET UP button. The
screen will display ADJUST SETTINGS . Press the LO TEMP ▲ or ▼ buttons to select the
desired low limit setting. (Setting range: OFF or 110°-200°F). For proper operation, the low
temperature limit setting should be at least 10° below the high limit setting.
NOTE: For cold start operation, the low limit must be turned OFF.
ECONOMY FEATURE
The Economy Feature conserves fuel by reducing boiler temperature whenever possible
without sacrificing comfort. The Economy Feature is factory set for a 1 zone heating system. To
adjust, touch the
SET UP button. The screen will display ADJUST SETTINGS . Referring to the
table below, press the ECONOMY ▲ or ▼ buttons to the number of heating zones in the
house. Do not include indirect water heaters in the number of heating zones. If the heating
system is unable to supply needed heat to the house, the Economy Feature should be set to a
lower number (example: In a three zone house, the Economy Feature should beset at 2or 1).
Conversely, if the boiler provides adequate heat,
added fuel savings can be achieved by selecting a
higher setting (example: 4or 5). If the heating and
indirect water heater signals were not separated
when wiring the control, the Economy Feature
should be adjusted to OFF to ensure the boiler
supplies adequate temperature to heat the indirect
tank.
Setting the ZONE/INDIRECT SWITCH
The Zone/Indirect Switch (labeled Z-I) on
the control must be set in the I position when the boiler is installed with an indirect water heater.
Wiring the indirect water heater properly is important to ensure proper operation of this feature.
See WIRING for more information on the Zone/Indirect Switch and wiring.
11.1 Operation of 3250R control