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All installations and services must be performed by qualified service personnel.
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NOTE: When the CDX1 is installed as horizontal unit, it is imperative that the auxiliary limit switch and
bracket be located on the upper side of the house air blower; the burner rollout switch located on the
burner box be relocated to the side of the burner box; and that the hose from the single tap pressure
switch be connected to the lower tap on the front of the collector box (See Figure 1).
Figure 1
The horizontal furnace installation should be on a service platform large enough to allow for proper
clearances on all sides and service access to the front of the furnace (See Table 1). If the furnace is
suspended, it must be supported at both ends and in the middle with clearance allowed for removal of
both access doors. Gas supply line contact is only permissible between lines
formed by the intersection of
the top and two sides of the furnaces casing and the building joists, studs, or framing (See Figure 1).