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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

 

Summary of Contents for SG-3

Page 1: ...erformed by a qualified installer service agency or the gas supplier Please Read Instructions Carefully Save for Future Reference Distributed By QUINCY HYDRONIC TECHNOLOGY INC 3560 LAFAYETTE RD PORTSM...

Page 2: ...Page 2 Biasi SG Pro Series...

Page 3: ...The installing contractor is the best judge of a system s specific requirements as well as the local availability of certain makes and models of controls and accessories The preceding does not apply...

Page 4: ...losion Diagram 2 8 Boiler Location 3 9 Installation of Boiler Trim Kit Components 4 10 12 Piping the Boiler 5 13 Intake Venting 6 14 15 Exhaust Venting 7 16 Common Exhaust Venting 7 1 16 17 Block Flue...

Page 5: ...t all times Keep the boiler area clean and free of all fire hazards Please read the literature and warranties supplied by the manufacturers of the various accessory equipment This equipment is warrant...

Page 6: ...ed with those of influenza and the highest incidence of poisoning occurs at the onset of cold weather or during flu season A victim may not experience any symptoms only one symptom or a few symptoms S...

Page 7: ...ponents USE ONLY THE LISTED BOILER SYSTEM COMPONENTS AND SPECIFIED OIL AND GAS BURNER COMPONENTS SUPPLIED WITH THE BIASI SG BOILER 1 General Information Boiler Model Heating Capacity Gross Input Burne...

Page 8: ...hammer cushioned with a block of wood Apply boiler mastic to one section only and slide sections together Install the four draw rods and draw the sections together evenly measure with ruler or tape me...

Page 9: ...sides and rear of the boiler 2 18 from the flue pipe in any direction 3 24 inches from the front of the boiler DANGER The boiler must be located on a non combustible floor A smooth level concrete floo...

Page 10: ...amper w Manual Reset Spill Switch Gas Burner Only BIASI SG T handle Gas Cock Alternative Location Drip Leg Gas Train Positive Pressure Gas Fired 4 1 Boiler Trim Components Union Trim Kit Components 1...

Page 11: ...Tapping 11 2 Boiler Return Tapping 3 4 Boiler Drain Tapping 3 4 Hi Limit Control or PRV Tapping 3 4 PRV or Hi Limit Control Tapping 6 Exhaust Breeching 2x 26 3 4 Control Panel Pressure Sensor Tapping...

Page 12: ...ach with a washer and a nut 4 Next place the door catch under the top post of the side opposite that on which the hinges are mounted This is mounted in a similar manner to the hinges Tighten with a wa...

Page 13: ...t off be installed Install manual and or automatic air venting devices at the high points in the system to eliminate trapped air The weight of all piping should be supported by suitable hangars and fl...

Page 14: ...hall not be located closer than 3 inches from either the top or bottom of the enclosure and shall connect directly or by ducts with the outdoors The area of each opening shall be equal to one square i...

Page 15: ...ll ceiling joints between wall panels at penetrations for plumbing electrical and gas lines and in other openings If the building is of tight construction air openings must be provided from the outsid...

Page 16: ...timing control to prevent problems with fogging and nozzle post drip The determining connection from the boiler to the chimney should be as short as possible with a minimum number of elbows The equiv...

Page 17: ...aust fans fireplace dampers and any other gas burning appliance to their previous condition of use 7 Any improper operation of the common venting system should be corrected so the installation conform...

Page 18: ...A good target is 11 to 12 75 of CO2 or 6 0 to 3 5 of O2 7 Checking for a zero smoke level in the flue pipe To ensure proper burner setup gauges should be used to check things such as the pump pressure...

Page 19: ...er Model EZ 1 EZ 1 EZ 1 Firing Rate 0 91 1 22 1 52 Insertion Depth 3 5 3 5 3 5 Nozzle 65 x60 1 00 x 60 1 25 X 60 Spray Pattern B B B Pump Pressure 175 psi 135 psi 140 psi Head 60 65 85 1 00 1 10 1 25...

Page 20: ...12 for the proper setup of the burner To determine how much gas is coming into the burner or to set the gas meter correctly the following formula can be used The chart to the right can be used to dete...

Page 21: ...gas valve When installing the boiler make sure a pipe compound resistant to the action of liquefied petroleum is used Check piping for leaks Always check leaks with a water and soap solution DO NOT U...

Page 22: ...ture 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 sc...

Page 23: ...70 and or the Canadian Electrical Code Part 1 CSA C22 1 Electrical Code Wiring the boiler Power for the SG Pro series boiler should be brought to the junction box in the back of the boiler under the t...

Page 24: ...EXTERNAL CONTROL HYDROSTAT 3250 Touch Control T T SG Pro Touch Screen Control Panel Internal Wiring B R G W B R G W L1 L2 C1 C2 B1 B2 ZC ZR GND 5 L N 3 4 10 9 8 7 6 11 12 RIELLO PRIMARY N L X CHASSIS...

Page 25: ...TERNAL CONTROL HYDROSTAT 3250 Touch Control T T SG Pro Touch Screen Control Panel Internal Wiring B R G W B R G W L1 L2 C1 C2 B1 B2 ZC ZR GND 5 L N 3 4 10 9 8 7 6 11 12 SG Pro with Beckett NX Burner F...

Page 26: ...2 C1 C2 B1 B2 ZC ZR GND 5 L N 3 4 10 9 8 7 6 11 12 SG Pro with Carlin Burner Fuse GND GND C2 C1 B1 B2 limit line neutral grnd Carlin 70200 Please note the Black and Red wires are connected to B1 Cauti...

Page 27: ...L CONTROL HYDROSTAT 3250 Touch Control T T SG Pro Touch Screen Control Panel Internal Wiring B R G W B R G W L1 L2 C1 C2 B1 B2 ZC ZR GND 5 L N 3 4 10 9 8 7 6 11 12 SG Pro with Carlin EZ GAs Burner Fus...

Page 28: ...ND SWITCH ON EXTERNAL CONTROL HYDROSTAT 3250 Touch Control T T SG Pro Touch Screen Control Panel Internal Wiring B R G W B R G W L1 L2 C1 C2 B1 B2 ZC ZR GND 5 L N 3 4 10 9 8 7 6 11 12 SG Pro with Gas...

Page 29: ...ZONE2 T A DHW Aquastat DHW Pump FOUR ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY OFF ON ZONE 4 PRIORITY MOD E RESE T ZVC 404 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 ZONE 4 RELAY...

Page 30: ...the Pressure Relief Valve and manually set it off three times to ensure it is operating normally and not leaking 3 If a Low Water Cut Off is installed follow the manufactures suggested maintenance an...

Page 31: ...____________________ ______________________ _________________________ ______________________ Burner Manufacturer Type of Oil Burner Burner Model No Burner Serial No Nozzle Manufacturer Nozzle Spray An...

Page 32: ...ext step 7 Return the manual valve on the combination gas valve to the on position by reversing step 5 8 Turn on all electric power to the appliance 9 Set thermostat to the desired setting 10 If the b...

Page 33: ...Biasi SG Pro Series Page 33 Notes...

Page 34: ...Page 34 Biasi SG Pro Series Notes...

Page 35: ...Biasi SG Pro Series Page 35 Notes...

Page 36: ...installation conforms to all codes and ordinances 4 This warranty does not apply to boilers which are subject to misuse abuse neglect alteration accident excessive temperature excessive pressure or co...

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