16 Air Circulation Blower Gas Valve Ignitor Pressure Switch (N.O. Contacts) Combustion Blower Thermostat ON OFF OPEN CLOSED ON OFF CLOSED OPEN ON OFF ON OFF Seconds 0 34 38 110 0 90 Thermostat ON Gas Valve OpensIgnitor OFF Air Blower ON Thermostat OFFCombustion ProductPurge Ends. Air Blower OFFCombustionBlower OFF Figure 12 Timing Chart for Normal Robertshaw Operation (PGB & PGC) On Indoor Fan Off Outdoor Fan On and Off Compressor On Thermostat Off Seconds 0 15 0 45 (approx.) (approx.) Figure 13

Unit Specifications ........................................ 2 II. Safety Information ......................................... 6 III. General Information ...................................... 7 IV. Rigging and Handling ................................... 9 V. Gas Piping .................................................... 10 Vl. Electrical Wiring .......................................... 12 Vll. Circulating Air and Filters .......................... 13 VIII. Flue Vent ........................