507277-02
Page 32 of 52
Issue 1621
Removal of the Furnace from Common Vent
In the event that an existing furnace is removed from a
venting system commonly run with separate gas appliances,
the venting system is likely to be too large to properly vent
the remaining attached appliances.
Conduct the following test while each appliance is operating
and the other appliances (which are not operating) remain
connected to the common venting system. If the venting
system has been installed improperly, you
must
correct the
system as indicated in the general venting requirements
section.
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation could result in carbon monoxide
poisoning or death.
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all other appliances connected to the
venting system are not in operation.
WARNING
1. Seal any unused openings in the common venting
system.
2. Inspect the venting system for proper size and horizontal
pitch. Determine that there is no blockage, restriction,
leakage, corrosion, or other deficiencies which could
cause an unsafe condition.
3. Close all building doors and windows and all doors
between the space in which the appliances remaining
connected to the common venting system are located
and other spaces of the building. Turn ON clothes
dryers and any appliances not connected to the common
venting system. Turn ON any exhaust fans, such as
range hoods and bathroom exhausts, so they will
operate at maximum speed. Do not operate a summer
exhaust fan. Close fireplace dampers.
4. Follow the lighting instructions. Turn ON the appliance
that is being inspected. Adjust the thermostat so that
the appliance operates continuously.
5. After the main burner has operated for 5 minutes, test
for leaks of flue gases at the draft hood relief opening.
Use the flame of a match or candle.
6. After determining that each appliance connected to
the common venting system is venting properly, (step
3) return all doors, windows, exhaust fans, fireplace
dampers, and any other gas burning appliances to their
previous mode of operation.
7. If a venting problem is found during any of the preceding
tests, the common venting system must be modified to
correct the problems.
Resize the common venting system to the minimum vent
pipe size determined by using the appropriate tables in
Appendix G. These are in the current standards of the
National Fuel Gas Code ANSI Z223.1.
Содержание 95G1DFE
Страница 29: ...507277 02 Page 29 of 52 Issue 1621 Figure 43 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...
Страница 35: ...507277 02 Page 35 of 52 Issue 1621 Typical Wiring Diagram Figure 50 For A95DF1E 95G1DFE ...
Страница 46: ...507277 02 Page 46 of 52 Issue 1621 Troubleshooting Heating Sequence of Operation ...
Страница 47: ...507277 02 Page 47 of 52 Issue 1621 Troubleshooting Heating Sequence of Operation continued ...
Страница 48: ...507277 02 Page 48 of 52 Issue 1621 Troubleshooting Cooling Sequence of Operation ...
Страница 49: ...507277 02 Page 49 of 52 Issue 1621 Troubleshooting Continuous Fan Sequence of Operation ...