National Products Series B, BW3 Procedure 2ÐPILOT Burner Adjustment, Procedure 3ÐMAIN Burners

Page 16

 

PRESSURE REGULATOR

 

 

ADJUSTMENT

 

 

(UNDER CAP SCREW)

OUTLET

 

 

 

 

 

WIRING

PRESSURE

 

 

TAP

 

TERMINALS (3)

 

GROUND

 

INLET

 

 

 

TERMINALS (2)

 

PRESSURE

 

 

 

 

 

TAP

 

 

38to 12

GAS

 

GAS

 

INLET

ON

OUTLET

 

 

 

FLAME

 

 

 

ON SENSOR

 

OFF

PILOT

 

 

PILOT

 

GAS CONTROL

OUTLET

 

ADJUSTMENT

 

KNOB SHOWN

(UNDER CAP

 

 

IN "ON" POSITION

SCREW)

 

 

A95160

 

A95520

Fig. 9ÐPilot Flame and Sensor

Fig. 10ÐAutomatic Gas Valve

Table 6ÐRecommended Boiler Water Temperatures

 

 

TYPE OF HEATING UNIT

LIMIT CONTROL SETTING

 

Standing Radiators

 

180°F

 

Baseboard and Convector Radiators

 

200°F

 

CHECKING AND ADJUSTING

PROCEDURE 1ÐGAS VALVE SAFETY SHUTDOWN TEST

With main burners firing, disconnect ignition cable from intermittent pilot control box. Gas valve should shut off main burners. TURN OFF ELECTRIC POWER to boiler before reconnecting ignition cable to prevent electric shock.

PROCEDURE 2ÐPILOT BURNER ADJUSTMENT

Pilot flame should surround 3/8- to 1/2-in. of pilot sensor. (See Fig. 9.) If flame needs adjusting, proceed as follows:

1.Remove screw cover over pilot adjusting screw. (See Fig. 10.)

2.Insert small screwdriver and adjust flame as needed. (See Fig. 9 and 11.) Turn screw counterclockwise to increase flame and clockwise to decrease flame.

3.Replace screw cover over pilot adjusting screw.

PROCEDURE 3ÐMAIN BURNER(S)

The main burners do not require primary air adjustment and are not equipped with primary air shutters. Main burner flames should form sharp blue inner cones in a softer blue out mantel, with no yellow. Puffs of air from blowing on the flame or stamping on the floor will cause the flames to turn orange momentarily. This is not unusual. Remain still when observing the main burner flames. If the flame appearance is not correct, check main burner orifices and the burner throat and flame ports for dust and lint obstruction. It may be necessary to remove the rollout shield to observe the main burner flames. Replace rollout shield after observation. (See Fig. 11.)

PROCEDURE 4ÐLIMIT CONTROLS ADJUSTMENT

Instructions for each control are included with controls.

Table 6 shows recommended boiler water temperatures. These settings can be changed after becoming familiar with system operation. For example, if system is not giving quite enough heat in very cold weather, the limit setting can be raised to 220°F.

PROCEDURE 5ÐTHERMOSTAT HEAT ANTICIPATOR ADJUSTMENT

Instructions for final adjustment of thermostat are packaged with thermostat. Set heat anticipator at 0.2.

Check thermostat operation. When set above temperature indicated on thermometer, boiler burners should ignite. Make certain thermostat shuts boiler off when room temperature reaches selected setting and starts boiler operating when room temperature falls a few degrees.

PROCEDURE 6ÐSAFETY CONTROLS CHECK

After setting limit control to desired setting, check to see if it shuts off gas supply to burners. Set thermostat to call for heat and let boiler run until temperature of water reaches limit setting. Gas valve should shut off and circulator should keep running until thermostat is satisfied or water cools enough to restart burners through limit control.

To check operation of contacts in pressure switch, disconnect rubber tubing (located between blower and pressure switch) from pressure switch while boiler is operating. The burners should extinguish, and blower should keep running. When tubing is reconnected to pressure switch, ignition sequence should begin, resulting in ignition of main burners.

Finally, set thermostat for desired temperature. Special conditions in home and location of thermostat govern this setting.

Safe lighting and other performance criteria were met with gas manifold and control assembly provided on boiler when boiler underwent tests specified in ANSI Z21.13.

Ð16Ð

Image 16
Contents Installation, Start-Up, and Operating Instructions IndexSafety Considerations Ð2ÐPage → Locating the Boiler Gas-Fired Hot Water BoilersÐ4Ð Procedure 1ÐBOILER Located in Unconfined Space → ÐRoom Large In Comparison With Boiler→FRESH AIR for Combustion Ð5ÐProcedure 2ÐBOILER Located in Confined Space AÐFresh Air Duct Capacities for Vertical Ducts BtuhBÐFresh Air Duct Capacities for Horizontal Ducts Btuh Ð6ÐInstallationðsystem Piping Procedure 1ÐFOR USE with Cooling UnitsProcedure 2ÐLOW Design Water Temperature Systems below 140F Procedure 1ÐCHECKING ChimneyProcedure 2ÐMINIMUM Vent Pipe Clearance Ð8ÐÐBoiler and Power Venter Optional Horizontal Venting with Power VenterPower Venter KIT Ð9ÐGAS Supply Piping Procedure 1ÐCHECKING GAS Supply Procedure 2ÐCONNECTING GAS PipingÐGas Pipe Sizes Ð10ÐProcedure 3ÐCHECKING GAS Piping Electrical WiringProcedure 1ÐELECTRIC Power Supply Procedure 2ÐINSTALLING ThermostatÐUnit Wiring Diagram Ð12ÐProcedure 7ÐDRAIN Valve Equipment and Optional Accessories Procedure 1ÐRELIEF ValveProcedure 8ÐWATER Temperature Control Procedure 9ÐCIRCULATING Pump Procedure 10ÐBLOWER Draft InducerProcedure 11ÐPRESSURE Switch Procedure 12ÐROLLOUT Switch Flame Rollout Safety ShutoffGAS Valve Operating Instructions To Turn On Gas To ApplianceTo Turn Off Gas To Appliance Ð15ÐProcedure 2ÐPILOT Burner Adjustment Procedure 3ÐMAIN BurnersProcedure 4ÐLIMIT Controls Adjustment Procedure 5ÐTHERMOSTAT Heat Anticipator AdjustmentMaintaining Boiler Procedure 1ÐBURNERS Procedure 2ÐRELIEF ValveProcedure 3ÐEXPANSION Tank Procedure 4ÐBOILER Flue PassagesProcedure 8ÐBLOWER Service HintsÐ18Ð If System is not Heating or not Giving Enough Heat→ for USE with Natural GAS only Natural Gas Burners and Manifold PartsÐ19Ð KEY DescriptionPropane Gas Burners and Manifold Parts → for USE with Propane GAS onlyÐ20Ð Ð21Ð KEYBoiler Controls and Piping Ð22ÐService Training Ð23ÐÐ24Ð

BW3, Series B specifications

National Products Series B and BW3 are pioneering additions to the realm of mobile workstation solutions, designed specifically for professionals who operate in fast-paced environments. These rugged and versatile products cater to a variety of sectors, including law enforcement, emergency response, and field service, ensuring that users remain efficient and organized while on the move.

The Series B is notable for its robust construction, built to withstand the rigors of constant use in challenging conditions. With a lightweight yet durable design, it combines portability with the resilience necessary for demanding applications. This series excels in adaptability, featuring multiple mounting options that can accommodate various devices, including laptops, tablets, and even larger screens. The flexibility to adjust the mount for optimal user comfort makes it suitable for long hours of operation.

One of the standout features of the Series B is its innovative Quick Release technology. This allows users to swiftly secure or detach devices with minimal effort, essential for those who need to move quickly between vehicles or locations. Additionally, the series is equipped with an array of cable management solutions, keeping workspaces organized and clutter-free—an essential consideration for professionals who rely on multiple devices.

The BW3 series takes mobility a step further by emphasizing a balance between form and function. With a streamlined design, the BW3 is as aesthetically pleasing as it is practical. Its integrated power management system features built-in charging ports, enabling users to keep their devices powered throughout the day. This aspect is particularly beneficial for professionals who rely on GPS, communication tools, and other electronic devices in the field.

Both the Series B and BW3 incorporate advanced materials that enhance their durability. These innovations include weather-resistant coatings and anti-corrosive finishes, guaranteeing longevity and reliability even under adverse conditions.

In summary, the National Products Series B and BW3 are finely crafted mobile workstation solutions that seamlessly integrate technology and functionality. Their key features—including Quick Release mounts, extensive device compatibility, and robust construction—make them indispensable tools for demanding professionals. By prioritizing user comfort and efficiency, these products elevate the standards of mobile work environments, empowering users to excel in their respective fields.