Service manual

11
Pump Venting Instructions
Venting General Requirements
Install the venting in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA-54 -
latest revision . This section provides partial information about this specification with regard to
size and configuration for venting requirements (see following figures). However, to provide
assurance of proper and safe operation, it is the responsibility of the installer to make sure
the installation is in strict accordance with the National Fuel Gas Code.
The vent may exit the building either Vertically or Horizontally. Horizontal discharge is
preferred (see Figure L). Vertical discharge must be arranged as shown in Figure K.
Venting the Pump
1. The exhaust connection from the vacuum pump is 4" (10 cm) diameter.
2. Connect one of the flexible isolation boots provided to the flue pipe.
3. Connections to flue pipe larger than 4" (10 cm) require use of an appropriate "taper
pattern reducer" (not supplied).
4. Venting from the pump may discharge either horizontally or vertically; corrosion
resistant pipe is recommended.
5. Vent lengths are allowed as follows:
VENT LENGTH VENT SIZE
Up to 25' (7.5 m) 4" (10 cm) vent/3 elbows
Up to 50' (15 m) 5" (12.5 cm) vent/3 elbows
WARNING
Carbon Monoxide Hazard
Vacuum pump must be vented to
the outside.
Vacuum pump must be installed
according to this Installation,
Operation, and Service Manual.
Failure to follow these instructions
will result in death or injury.
SECTION 6: VACUUM PUMP VENTING INSTRUCTIONS