GAS Rate Cubic Feet PER Hour | York DJ150 instruction

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3.Measure the time needed for one revolution of the hand on the smallest dial on the meter. A typical gas meter has a 1/2 or a 1 cubic foot test dial.

4.Using the number of seconds it takes for one revolution of the dial, calculate the cubic feet of gas consumed per hour. (See example below).

5.If necessary, adjust the high pressure regulator as dis- cussed in the section “Manifold Gas Pressure Adjust- ment”. Be sure not to over-firethe furnace on Second stage. If in doubt, it is better to leave the Second stage of the furnace slightly under-fired. Repeat Steps 1-5.

To determine the rate of gas flow (First Stage)

1.Turn of all other gas appliances connected to the gas meter.

2.Turn on the furnace and make sure the thermostat is calling for first stage (60% input) heat.

3.Even when the thermostat is calling for first stage heat, the unit will light on second stage and will run on Second stage for 1 minute. Allow this one-minute time period to expire and be certain the unit is running on first stage.

4.Measure the time needed for one revolution of the hand on the smallest dial on the meter. A typical gas meter has a 1/2 or a 1 cubic foot test dial.

5.Using the number of seconds it takes for one revolution of the dial, calculate the cubic feet of gas consumed per hour (See example below).

6.If necessary, adjust the low pressure regulator as dis- cussed in the section “Manifold Gas Pressure Adjust- ment”. Be sure not to under-firethe furnace on first stage. If in doubt, it is better to leave the first stage of the furnace slightly over-fired (greater than 60% input). Repeat Steps 1-6.

TABLE 27: GAS RATE CUBIC FEET PER HOUR

Seconds	Size of Test Dial
for One
for One	1/2 cu. ft.	1 cu. ft.
Rev.	1/2 cu. ft.	1 cu. ft.
Rev.

10	180	360

12	150	300

14	129	257

16	113	225

18	100	200

20	90	180

22	82	164

24	75	150

26	69	138

28	64	129

30	60	120

32	56	113

34	53	106

36	50	100

38	47	95

40	45	90

42	43	86

44	41	82

46	39	78

48	37	75

50	36	72

52	35	69

54	34	67

56	32	64

58	31	62

60	30	60

NOTE: To find the Btu input, multiply the number of cubic feet of gas consumed per hour by the Btu content of the gas in your particular locality (contact your gas company for this information as it varies widely from area to area).

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DJ150 specifications

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