Unitary products group PT9-UP Installation Manual

035-20417-001 Rev. C (0904)HIGH EFFICIENCYTUBULAR HEAT EXCHANGER SERIESMODELS: PT9 / FC9T / FL9T(Two Stage Upflow)40 - 120 MBH INPUT(11.7 - 35.1 KW) I

035-20417-001 Rev. C (0904)10 Unitary Products GroupThree elbows (two in vent pipe and one in the air intake pipe) are already accounted for and need

035-20417-001 Rev. C (0904)Unitary Products Group 11VENT CLEARANCES† A vent shall not terminate directly above a sidewalk or paved driveway that is lo

035-20417-001 Rev. C (0904)12 Unitary Products GroupVENT SYSTEMThis furnace is certified to be installed with one of two possible ventconfigurations.1

035-20417-001 Rev. C (0904)Unitary Products Group 13 EXTERNAL HORIZONTAL VENT DRAIN When installing the furnace with a horizontal vent configuration i

035-20417-001 Rev. C (0904)14 Unitary Products GroupAmbient Combustion Air Supply This type installation will draw the air required for combustion fro

035-20417-001 Rev. C (0904)Unitary Products Group 15Vent and Supply (Outside) Air Safety Check ProcedureFollow the procedure in ANSI Z223.1 National F

035-20417-001 Rev. C (0904)16 Unitary Products GroupSpecially Engineered InstallationsThe above requirements shall be permitted to be waived where spe

035-20417-001 Rev. C (0904)Unitary Products Group 17LIMIT CONTROLSThere is high temperature limit control located on the furnace vestibulepanel near t

035-20417-001 Rev. C (0904)18 Unitary Products GroupIn the USA use the following formula to calculate the furnace input.For natural gas multiply the h

035-20417-001 Rev. C (0904)Unitary Products Group 19IMPORTANT: The inlet gas pressure operating range table specifieswhat the minimum and maximum gas

035-20417-001 Rev. C (0904)2 Unitary Products GroupSPECIFIC SAFETY RULES AND PRECAUTIONS1. Only Natural gas or Propane (LP) gas are approved for use w

035-20417-001 Rev. C (0904)20 Unitary Products GroupADJUSTMENT OF TEMPERATURE RISEThe temperature rise, or temperature difference between the return a

035-20417-001 Rev. C (0904)Unitary Products Group 21NOTES:1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute

035-20417-001 Rev. C (0904)22 Unitary Products GroupAPPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOWTo determine the approximate airflow of t

035-20417-001 Rev. C (0904)Unitary Products Group 23SECTION X: WIRING DIAGRAM FIGURE 27: Wiring Diagram

Subject to change without notice. Printed in U.S.A. 035-20417-001 Rev. C (0904)Copyright © by York International Corp. 2004. All rights reserved. Supe

035-20417-001 Rev. C (0904)Unitary Products Group 3INSPECTIONAs soon as a unit is received, it should be inspected for possible dam-age during transit

035-20417-001 Rev. C (0904)4 Unitary Products GroupDUCTWORK INSTALLATION AND SUPPLY PLENUM CONNECTIONAttach the supply plenum to the furnace outlet du

035-20417-001 Rev. C (0904)Unitary Products Group 5If a matching cooling coil is used, it may be placed directly on the fur-nace outlet and sealed to

035-20417-001 Rev. C (0904)6 Unitary Products GroupSIDE RETURN - FILTER INSTALLATIONLocate and mark the side return opening. Refer to Figure 1 for dim

035-20417-001 Rev. C (0904)Unitary Products Group 7Gas piping may be connected from either side of the furnace using anyof the gas pipe entry knockout

035-20417-001 Rev. C (0904)8 Unitary Products GroupELECTRICAL POWER CONNECTIONSField wiring to the unit must be grounded. Electric wires that are fiel

035-20417-001 Rev. C (0904)Unitary Products Group 9ACCESSORY CONNECTIONSThe furnace control will allow power-switching control of various acces-sories