Space-Ray LTU Series Installation And Operation Instructions Manual page 42

MULTIPLE HEATER VENTING MULTIPLE HEATER VENTING
MULTIPLE HEATER VENTING MULTIPLE HEATER VENTING
Requirements for venting of multiple heaters are the same as described for SINGLE HEATER VENTING
follows:
1. The common vent size and total vent height is normally determined by the number of heaters per common
vent, length of horizontal connector runs, and connector rise. Connector lengths should be as short as
possible and have a minimum 1/4 inch per foot rise. Without regard to connector rise and total vent height
due to many possible venting configurations, the following should be observed:
Common vent pipe & vent connector diameter should be no less than that shown in the following Vent
•
Sizing Table.
The connector length should be no more than 75% of the vertical portion of vent above the connector.
•
Where possible, use a Y-connector to the common vent.
•
2. Material for connectors should be constructed of galvanized sheet metal or other approved noncombustible
corrosion resistant material as allowed by state or local codes. All common vent pipe should be insulated
flue pipe or double-wall, Type B vent.
3. Avoid unnecessary bends. Limit to two (2) 90º elbows.
4. The entire length of vent connector shall be readily accessible for inspection, cleaning and replacement.
5. Groups of heaters with a common vent must be controlled by a common thermostat.
Multiple Heater Vertical Venting Arrangement
Form #43155010
Sept 2011
(CONNECTIONS INTO A COMMON VENT OR MANIFOLD) (CONNECTIONS INTO A COMMON VENT OR MANIFOLD)
(CONNECTIONS INTO A COMMON VENT OR MANIFOLD) (CONNECTIONS INTO A COMMON VENT OR MANIFOLD)
If any heater connected to a common vent system for multiple If any heater connected to a common vent system for multiple If any heater connected to a common vent system for multiple If any heater connected to a common vent system for multiple
heaters is found inoperative, the heater should b heaters is found inoperative, the heater should b heaters is found inoperative, the heater should be disconnected from heaters is found inoperative, the heater should b
the vent system and its entrance into the vent system capped. the vent system and its entrance into the vent system capped.
the vent system and its entrance into the vent system capped. the vent system and its entrance into the vent system capped.
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SINGLE HEATER VENTING except as
SINGLE HEATER VENTING SINGLE HEATER VENTING
e disconnected from e disconnected from e disconnected from