Install Instructions

17
Table 9: Gas Flow Rate in Cubic Feet per Hour
Seconds
for One
Revolution
Size of Gas Meter Dial
One-Half
Cu. Ft.
One
Cu. Ft.
Two
Cu. Ft.
Five
Cu. Ft.
30 60 120 240 600
32 56 113 225 563
34 53 106 212 529
36 50 100 200 500
38 47 95 189 474
40 45 90 180 450
42 43 86 172 430
44 41 82 164 410
46 39 78 157 391
48 37 75 150 375
50 36 72 144 360
52 35 69 138 346
54 33 67 133 333
56 32 64 129 321
58 31 62 124 310
60 30 60 120 300
62 29 58 116 290
64 29 56 112 281
66 29 54 109 273
68 28 53 106 265
70 26 51 103 257
72 25 50 100 250
74 24 48 97 243
76 24 47 95 237
78 23 46 92 231
80 22 45 90 225
NOTICE
CGS-A boilers built for installation at altitudes
greater than 2,000 feet above sea level have
been specially oriced to reduce gas input rate
4 percent per 1,000 feet above sea level per the
National Fuel Gas Code, NFPA 54/ANSI Z223.1,
Section 8.1.2 and Appendix F. High altitude
boiler models are identiable by the third digit in
the model number sufx on the rating label:
CGS _ OA _ _ - _ _ 2: less than 2000 ft. elevation
CGS _ OA _ _ - _ _ 5: 2000 to 5000 ft. elevation
VII. System Start-up (continued)
CAUTION
Avoid operating this boiler in an environment
where saw dust, loose insulation bers, dry wall
dust, etc. are present. If boiler is operated under
these conditions, the burner interior and ports
must be cleaned and inspected daily to insure
proper operation.
4. Adjust thermostat to lowest setting. Rell boiler to
normal water line.
M. Check limit.
1. Adjust thermostat to highest setting.
2. Observe pressure gauge. When pressure is indicated,
adjust limit to setting below observed pressure.
Main burners should extinguish.
3. Adjust limit to setting above observed pressure.
Ignition sequence should begin.
4. Adjust thermostat to lowest setting. Adjust limit to
desired setting.
N. Check Vent Damper Operation. Vent Damper must be
in open position when main burners are ignited.
O. Adjust gas input rate to boiler (Natural Gas).
1. Adjust thermostat to highest setting.
2. Check manifold gas pressure. Manifold pressure
is listed on rating label. Adjust gas valve pressure
regulator as necessary (turn adjustment screw
counterclockwise to decrease manifold pressure, or
clockwise to increase manifold pressure). If pressure
can not be attained, check gas valve inlet pressure.
If less than minimum gas supply pressure listed on
rating label, contact gas supplier for assistance.
3. Clock gas meter for at least 30 seconds. Use Table 9
to determine gas ow rate in Cubic Feet per Hour.
4. Determine Input Rate. Multiply gas ow rate by gas
heating value.
5. Compare measured input rate to input rate listed on
rating label.
a. Boiler must not be overred. Reduce input
rate by decreasing manifold pressure. Do not
reduce more than 0.3 inch w.c. If boiler is still
overred, contact New Yorker Boiler Company
for replacement Gas Orices.
b. Increase input rate if less than 98% of rating
label input. Increase manifold gas pressure no
more than 0.3 inch w.c. If measured input rate is
still less than 98% of rated input: