Installation guide

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3-MIN
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Fig. 9--Sediment Trap
C99020
CAUTION: If a flexible conductor is required or allowed by the authority having jurisdiction, black iron pipe shall be
installed at the gas valve and shall extend a minimum of 2 in. outside the unit casing.
WARNING: Never use a match or other open flame when checking for gas leaks. Never purge gas line into combustion
chamber. Failure to follow this warning could result in an explosion causing serious injury or death.
8. Check for gas leaks at the field-installed and factoryqnstalled gas lines after all piping connections have been completed. Use
soap-and-water solution (or method specified by local codes and/or regulations).
PROCEDURE 9--INSTALL DUCT CONNECTIONS
The unit has duct flanges on the supply- and return-air openings on the side and bottom of the unit. For downshot applications, the ductwork
connects to the roof curb (See Fig. 2 and 3 for connections sizes and locations).
A. CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DISCHARGE
WARNING: Before performing service or maintenance operations on the system, turn off main power to unit. Electrical
shock could cause serious injury or death.
I. Open all electrical disconnects before starting any service work.
2. Remove return duct cover located on duct panel by breaking connecting tabs with screwdriver and a hammer (See Fig. 10A & 10B).
o
• o
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;UPPLY RETURN
DUCT DUCT
OPENING OPENING
C99011
Fig. 10A Supply and Return Duct Opening
3. To remove supply duct cover, break fi'ont and right side connecting tabs with a screwdriver and a hammer. Push louver down to break rear
and left side tabs (See Fig. 10A & 10B).
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