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Desert Aire - SP Manual
2.10.7 Gas Heater Start-Up
Place the unit into heating mode. Verify the induction fan begins running. Verify the switch on the top of the
controller is switched to “ON” (not “TEST”). Allow the unit to reach steady state. Use a flue gas analyzer in the
flue gas duct and document: O2 (%), CO (PPM), Efficiency (%), CO2 (%) and gas temperature.
1” CPVC
Condensate Connection
2” NPT Gas
Connection
1” CPVC
Condensate Connection
2” NPT Gas
Connection
Figure 25a - (Top) Final Single B-Vent Installation and Figure 25b – ( Bottom) Final Dual B-Vent Installation
2.10.8 Gas Heater Condensate Drain
When the SelectAire Plus™ unit is provided with a gas heater, trap the condensate connections as shown
in Figure 26. Traps for each heater section must be trapped independently. The condensate drain may be
constructed with Schedule 40 PVC pipe, fittings and components. All joints must be watertight to prevent
leakage. Installation of a union ahead of the trap is preferred to permit maintenance of drains and
accommodate service and maintenance of the condensing furnace or you may install a cleanout tee or plug
near the trap.
Summary of Contents for SelectAire Plus SP Series
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