PB Heat DE manual Start-Upprocedures, Time that, E.Check-Outprocedure

START-UP PROCEDURES

Table 7.1a: Meter Conversion Natural Gas	Table 7.1b: Meter Conversion Natural Gas
(U.S. Customary Units)	(SI Metric System)

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

Time that		Heat Value of Gas
meter is		(Btu/cubic foot)
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

E.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.Turn gas supply off.

b.Set thermostat or controller above room temperature to call for heat. Watch for igniter glow at pilot burner.

Burner inputs in kW for various meter timings and heating values. (Tables based on 0.0566 cubic meters of gas through the 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

c.Igniter will continue to glow for 30 seconds, de- energize for 30 seconds, then re-energize and glow for another 30 seconds. It will then de- energize for 5 minutes before restarting the sequence.

d.Turn gas supply on.

e.Reset the boiler and control by following Operating Instructions.

f.Observe boiler operation through one complete cycle.

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