31
A.
Size gas Piping.
Design system to provide adequate
gas supply to boiler. Consider these factors:
1. Allowable pressure drop from point of delivery to
boiler. Maximum allowable system pressure is ½
psig. Actual point of delivery pressure may be less;
contact gas supplier for additional information.
Minimum allowable gas valve inlet pressure is
indicated on rating label.
2. Maximum gas demand. Table 5 lists boiler input rate.
Also consider existing and expected future gas
utilization equipment (i.e. water heater, cooking
equipment)
3. Length of piping and number of fittings. Refer to
Table 6 for maximum capacity of Schedule 40 pipe.
Table 7 lists equivalent length for standard fittings.
V. Gas Piping
Table 5: Rated Input
4. Specific gravity of gas. Gas piping systems for gas
with a specific gravity of 0.70 or less can be sized
directly from Table 6, unless authority having
jurisdiction specifies a gravity factor be applied. For
specific gravity greater than 0.70, apply gravity
factor from Table 8. If exact specific gravity is not
shown choose next higher value.
For materials or conditions other than those listed
above, refer to the
National Fuel Gas Code
, NFPA
54/ANSI Z223.1 and/or CAN/CGA B149 Installation
Codes, or size system using standard engineering
methods acceptable to authority having jurisdiction.
B.
Connect boiler gas valve
to gas supply system.
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1. Use methods and materials in accordance with local
plumbing codes and requirements of gas supplier. In
absence of such requirements, follow the
National
Fuel Gas Code
, NFPA 54/ANSI Z223.1 and/or CAN/
CGA B149 Installation Codes.
2. Use thread (joint) compound (pipe dope) resistant to
action of liquefied petroleum gas.
3. Install sediment trap, ground-joint union and manual
shut-off valve upstream of boiler gas valve and
outside jacket. See Figure 26.
4. All above ground gas piping upstream from manual
gas valve must be electrically continuous and
bonded to a grounding electrode. Do not use gas
piping as a grounding electrode. Refer to the
National Electrical Code
, ANSI/NFPA 70 and/or
CSA C22.1 Electrical Code.
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Содержание 805B
Страница 11: ...11 Figure 6 Flame Roll out Switch Installation Figure 7 Burner Burner Access Panel Installation...
Страница 13: ...13 Figure 8 Jacket Assembly...
Страница 14: ...14 Figure 9 EP OP Control Installation...
Страница 17: ...17 Figure 10 Schematic Gas Piping 24V Standing Pilot 806B 807B...
Страница 18: ...18 Figure 11 Main Gas Piping Intermittent Ignition EI...
Страница 19: ...19 Figure 12 Schematic Pilot Piping Honeywell EI USA...
Страница 20: ...20 Figure 13 Schematic Pilot Piping Honeywell EI Canada Natural Gas 805B 810B LP Gas 806B 807B...
Страница 21: ...21 Figure 14 Schematic Pilot Piping Johnson EI USA...
Страница 22: ...22 Figure 15 Schematic Pilot Piping Johnson EI Canada Natural Gas 805B 810B LP Gas 806B 807B...
Страница 23: ...23 Figure 16 Schematic Gas Piping OP Control System 806B 810B...
Страница 24: ...24 Figure 17 Schematic Gas Piping OP CSD 1 Control System 808B 810B...
Страница 25: ...25 Figure 18 Schematic Gas Piping EP Control System Natural Gas Only 806B 810B...
Страница 26: ...26 Figure 19 Schematic Gas Piping EP CSD 1 Control System 808B 810B...
Страница 30: ...30 Figure 25 Recommended Boiler Piping for Circulator Zoned Heating Systems...
Страница 39: ...39 Figure 31 Wiring Diagram Standing Pilot 24 USA and Canada Continuous Circulation...
Страница 40: ...40 Figure 32 Wiring Diagram Standing Pilot 24V USA and Canada Intermittent Circulation...
Страница 42: ...42 Figure 33 Wiring Diagram OP OP CSD 1 Ignition System Continuous Circulation...
Страница 43: ...43 Figure 34 Wiring Diagram OP OP CSD 1 Ignition System Intermittent Circulation...
Страница 45: ...45 Figure 35 Wiring Diagram Honeywell EI USA Continuous Circulation...
Страница 46: ...46 Figure 36 Wiring Diagram Honeywell EI USA Intermittent Circulation...
Страница 47: ...47 Figure 37 Wiring Diagram Honeywell EI Canada Continuous Circulation...
Страница 48: ...48 Figure 38 Wiring Diagram Honeywell EI Canada Intermittent Circulation...
Страница 50: ...50 Figure 39 Wiring Diagram Johnson EI USA Continuous Circulation...
Страница 51: ...51 Figure 40 Wiring Diagram Johnson EI USA Intermittent Circulation...
Страница 52: ...52 Figure 41 Wiring diagram Johnson EI Canada Continuous Circulation...
Страница 53: ...53 Figure 42 Wiring Diagram Johnson EI Canada Intermittent Circulation...
Страница 55: ...55 Figure 43 Wiring Diagram EP EP CSD 1 Ignition System USA Continuous Circulation...
Страница 56: ...56 Figure 44 Wiring Diagram EP EP CSD 1 Ignition System USA Intermittent Circulation...
Страница 60: ...60 Figure 49 Lighting Instructions 24V Standing Pilot...
Страница 61: ...61 Figure 50 Operating Instructions EI...
Страница 62: ...62 Figure 51 Lighting Instructions OP...
Страница 63: ...63 Figure 52 Operating Instructions EP...
Страница 71: ...71 Honeywell EI Trouble Shooting Guide...
Страница 72: ...72 Johnson EI Trouble Shooting Guide...
Страница 73: ...73...
Страница 74: ...74 SERVICE RECORD DATE SERVICE PERFORMED...
Страница 94: ...94...
Страница 97: ...97...