PB Heat MIH manual Checking Burner Input, CHECK-OUT Procedure

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START-UP PROCEDURES

E.CHECKING BURNER INPUT

1.Refer to rating label mounted on the jacket top panel to obtain the rated BTU per hour input. In no case shall the input to the boiler exceed the value shown on the rating label.

2.Check input by use of the following formulas

(PB Heat, LLC suggests reading meter for 2 Cu. Ft.):

U.S. Customary Units

Input (BTU/Hr.)= 3600 x F x H

T

Where:

3600 – Seconds per hour

F – Cubic Feet of Gas Registered on Meter H – Heat Value of Gas in BTU/Cubic Feet T – Time in Seconds the Meter is Read

SI Metric Units

Input (kW)= 3600 x F x H

T x 3.6

Where:

3600 – Seconds per hour

3.6– Megajoule (MJ) per kilowatt hour (kwhr) F – Cubic Meters of Gas Registered on Meter H – Heating Value of Gas in MJ/Cubic Meter T – Time in Seconds the Meter is Read

3.As an alternative, use Table 7.1(a) and 7.1(b). Use the heating value provided by gas supplier. Use a stopwatch to record the time it takes for 2 cubic feet (0.0566 cubic meter) of gas to pass through the meter. Read across and down to determine rate.

Table 7.1a: Meter Conversion – Natural Gas (U.S. Customary Units)

Burner inputs in Btu/hr for various meter timings and heat values. (Table based on 2 cubic feet of gas through meter).

Time that

 

Heat Value of Gas

 

 

(Btu/cubic foot)

 

meter is

 

 

 

 

 

 

 

read (sec)

1000

1025

 

1050

 

 

25

288000

 

295200

 

302400

30

240000

 

246000

 

252000

35

205714

 

210857

 

216000

40

180000

 

184500

 

189000

45

160000

 

164000

 

168000

50

144000

 

147600

 

151200

55

130909

 

134182

 

137455

60

120000

 

123000

 

126000

65

110769

 

113538

 

116308

70

102857

 

105429

 

108000

75

96000

 

98400

 

100800

80

90000

 

92250

 

94500

85

84706

 

86824

 

88941

90

80000

 

82000

 

84000

95

75789

 

77684

 

79579

100

72000

 

73800

 

75600

105

68571

 

70286

 

72000

110

65455

 

67091

 

68727

115

62609

 

64174

 

65739

120

60000

 

61500

 

63000

125

57600

 

59040

 

60480

 

 

 

 

 

 

Table 7.1b: Meter Conversion – Natural Gas (SI Metric Units)

Burner inputs in kW for for various meter timings and heat values. (Table based on 0.0566 cubic meter of gas through meter).

Time that

 

Heat Value of Gas

 

meter is

 

(MJ/cubic meter)

 

read (sec)

37.26

38.19

 

39.12

 

 

 

 

 

 

 

25

84.36

 

86.46

 

88.57

30

70.30

 

72.05

 

73.81

35

60.25

 

61.76

 

63.26

40

52.72

 

54.04

 

55.35

45

46.86

 

48.03

 

49.20

50

42.18

 

43.23

 

44.28

55

38.34

 

39.30

 

40.26

60

35.15

 

36.03

 

36.90

65

32.44

 

33.25

 

34.06

70

30.13

 

30.88

 

31.63

75

28.12

 

28.82

 

29.52

80

26.36

 

27.02

 

27.68

85

24.81

 

25.43

 

26.05

90

23.43

 

24.02

 

24.60

95

22.20

 

22.75

 

23.31

100

21.09

 

21.62

 

22.14

105

20.08

 

20.59

 

21.09

110

19.17

 

19.65

 

20.13

115

18.34

 

18.80

 

19.25

120

17.57

 

18.01

 

18.45

125

16.87

 

17.29

 

17.71

 

 

 

 

 

 

F.CHECK-OUT PROCEDURE

1.After starting the boiler, be certain all controls are working properly. Check to be sure that the limit will shut off the boiler in the event of excessive water temperature. This can be done by lowering the limit setting until the main burners shut down. When proper limit function is confirmed, return the dial to its previous setting.

2.To check operation of the ignition system safety shut-off features:

a. Standing Pilot:

i)Turn the gas control knob counterclockwise to “PILOT”. The main burner should go out and the pilot should remain lit.

ii)Extinguish the pilot flame. Pilot gas flow should stop within 2-1/2 minutes. Complete shutdown is proven since the safety shut-off valve has stopped main and pilot gas flow.

iii)Reset the boiler by following Lighting Instructions.

iv)Observe boiler operation through one complete cycle.

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Contents Series MI/MIH Table of Contents Installation Sequence Using this ManualSpecial Attention Boxes Preinstallation Accessibility ClearancesClearance from Combustible Construction AIR for Combustion and VentilationAir Openings All Air from Indoors on Different Floors Air Openings All Air from Outdoors through Vertical Ducts Installation Survey Planning the LayoutBoiler SET-UP Water Piping and Controls Boiler Supply and ReturnSafety Relief Valve Parallel Hook-Up with Water ChillerPiping for Zoned Systems Zone Piping with Zone ValvesINDIRECT-FIRED Water Heater Expansion TankFreeze Protection Venting Vent Damper Installation GeneralIntegral Draft Hood Vent Piping and Chimney Venting with Vent Damper in Vertical PositionBoiler Removal from Common Venting System Seal any unused openings in the common venting systemGAS Piping Gas Connection to BoilerMIH Boiler Natural Gas Zoned System Wiring Wiring ControlsElectrical Sequence of Operation Wiring and Connection Diagram Intermittent Ignition Intermittent Ignition System Operating Sequence Zone Wiring with Zone Valves START-UP Procedures Completing the InstallationValve Tapping and Adjustment Screw Locations Operating Instructions For Your Safety Read Before Lighting Adjustment of Pilot GAS Flow Adjustment of GAS Pressure RegulatorControl Descriptions CHECK-OUT Procedure Checking Burner InputSTART-UP Procedures Troubleshooting Troubleshooting GuidesProblem Possible Causes Corrective Actions Intermittent Ignition System Troubleshooting Sequence Maintenance General Daily with Boiler in USEWeekly with Boiler in USE Monthly with Boiler in USEAnnually Before Start of Heating Season Standing Pilot and Main Burner FlameBoiler Dimensions & Ratings Series MI/MIH Boiler DimensionsRepair Parts Repair Parts Series MI/MIH GAS Boiler2Manifold Manifold/Gas Train MI Standing Pilot 3b Gas Valve and Pilot Intermittent 4Block/Draft Hood 4a Block/Draft Hood 5Jacket 6Controls/Circulator/Vent Damper Series MI/MIH