Burnham 101008-01R1-2/07 manual Gas Valve Detail, Typical CO2/O2 Combustion Readings Range

Page 51

Figure 11.2: Gas Valve Detail

11)Perform a combustion test. Boilers equipped with a concentric vent system have a flue gas sample tap located in the boiler vent collar (under the screw cap). For other vent systems, the sample probe may be inserted into the terminal. If this is not possible, remove the flue temperature sensor and insert the analyzer probe in the sensor opening. For the boiler to operate, this sensor will need to be remain connected to the wiring. If the flue gas sensor is removed, be sure to replace it after combustion testing is complete.

Check CO2 (or O2) and CO at both high and low fire. The boiler may be temporarily locked into high or low fire for 15 minutes as follows:

a)To lock the boiler in high fire, simultaneously press and hold the “Mode” button and “+“ button until the display

flashes “H”, indicating that the boiler has been driven to high fire. After this happens, allow the boiler to operate for approximately 5 minutes before taking combustion readings.

b)To lock the boiler in low fire, simultaneously press and hold the “Mode” button and “-“ button until the display

flashes “L”, indicating that the boiler has been driven to low fire. After this happens, allow the boiler to operate for approximately 5 minutes before taking combustion readings.

c)Normal modulation of the boiler should return 15 minutes after the boiler is locked in high or low fire.

At both high and low fire, CO readings should be less than 75 PPM. Typical CO2 readings are shown in Table 11.3.

TABLE 11.3: TYPICAL CO2/O2 COMBUSTION

READINGS RANGE

Model

Fuel

%CO2

%O2

 

 

 

 

FCM070

Natural Gas

9.4

4.4

FCM070

Propane

10.4

5.1

 

 

 

 

FCM090

Natural Gas

9.5

4.3

 

 

 

 

FCM090

Propane

10.5

5.0

 

 

 

 

FCM120

Natural Gas

9.5

4.3

 

 

 

 

FCM120

Propane

10.5

5.0

 

 

 

 

51

Image 51
Contents Freedom Table of Contents Maximum Vent Lengths SpecificationsProduct Description II SpecificationsIV Locating the Boiler III Before InstallingClearances To Combustible Or Non-combustible Material Clearances from Vent Piping to Combustible Construction Mounting The Boiler Wall MountingFloor Mounting Wall Mounting Hole Locations Boiler Mounting/Hardware VI Air for Ventilation Page Vent System Design VII VentingPage Or PVC Summary of Horizontal Venting OptionsHorizontal Concentric Venting Vent Option Size Vent U.S. Boiler Concentric Vent Components Vent Option6c Positioning Vent Terminal Under Overhangs VENT/ AIR Intake Fitting Equivalent Length Roof Summary of Vertical Venting OptionsNever Common Vent a FCM Boiler with Other Appliances Removing an Existing Boiler From a Common ChimneyAssembly of U.S. Boiler 60/100mm Concentric Venting 11 Dimension L 12 Cutting Outer Pipe 14 Preparing Terminal Section for Installation in the Wall 16 Installation of Stainless Steel Vent Collar Assembly of Stainless Steel Venting17a Star-34 Connection to Vent Collar 18 Z-Vent III Connection to Vent Collar 19 SAF-T Vent EZ Seal Connection to Vent Collar 20 FasNSeal Connection to Vent Collar Condensate Trap and Drain Line 21 Condensate Piping Arrangement Gas Connection To Boiler Viii Gas PipingFlow Requirements Through Boiler General System Piping PrecautionsIX System Piping System DesignMethod 1 Primary/Secondary Piping Piping Method #1 Heat Only Piping Method #1 Heat + Indirect Water Heater 4b Piping Method #1 Indirect Water Heater Loop Piping Shaded Pipe and Circulator Sizing for Indirect Water Heater Loop Pipe and Circulator Sizing for Boiler LoopFitting Equivalent Lengths Boiler Head Loss Standard Piping Installation RequirementsPiping for Special Situations 11 Chiller Piping Wiring Wiring Connections Diagram Ladder Diagram Page Never Attempt to Fill a HOT Empty Boiler XI Start-up and CheckoutWater Quality and Boiler Water Additives FCM Series Lighting and Operating Instructions SWT Typical CO2/O2 Combustion Readings Range Gas Valve DetailPage XII Operation Normal Display In Standby ModePage Basic Menu Tree First Digit Boiler Status Boiler StatusOutdoor Reset Curve XIII. Service and Maintenance Page No Error Code Displayed XIV. TroubleshootingCode Condition Possible Causes Soft Lockout Codes DisplayedHard Lockout Codes Displayed XV Parts Page KEY Description Parts ListPage Parts List Page Page Page DISP4D 150 151 152 153 154 155 156 157 158 159 160 161 162 Page Page Page Page Page Limited Warranty