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Summary of Contents for 48PD05

Page 1: ...m pressure and electrical components Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform the basic maintenance func...

Page 2: ...nstructions shipped with this accessory See Fig 1 Install insulation cant strips roofing and counter flashing as shown Ductwork can be installed to roof curb before unit is set in place Ductwork must...

Page 3: ...ROOP CURS ACCESSOR_ IS SHIPPED UNASSEMSLED 2 INSULATED _ANELS S DIMENSIONS IN ARE IN MILLIMETERS 4 ROOF CURS GALVANIZED STEEL 5 ATTACH DUCTWORNTO CURS FLANGE6 ON DUCT REST ON CURD 6 SERVICE CLEARANCE...

Page 4: ...ABE RAiL ALLOW O 5116 8 ON EACH SIDE FOR TOP COVER DRiP EDGE UNIIS MAY BE INSTALLED ON COMBUSTIBLE FLOORS WADE FROW CLASS A B C ROOR COVERING MATERIAL IF SET ON BASE RAILS CENTER OF GRAVITY DISCONNECT...

Page 5: ...ast 10 fl away from any adjacent unit When unit is located adjacent to public walkways flue assembly must be at least 7 fl above grade Roof Mount Check building codes for weight distribution requireme...

Page 6: ...antity Type Belt Size in Blower Pulley Type Fan Bearing Type Maximum Fan RPM FILTERS Unit Filter Type Unit Filter Qty Size in Economizer OA Inlet Screen Qty Size in 05 4 901 40 50 122 184 Puron s R 41...

Page 7: ...total _ I I Rollout switch opens closes deg F 51 Temperature Rise Min Max deg F QI Burner Orifice Diameter in drill size _l of burners total Rollout switch opens closes deg F El _ Temperature Rise Mi...

Page 8: ...moveable pulley RPM 89 87 Moveable pulley maximum full turns 5 5 Factory Speed setting RPM 828 929 Table 4 Fan and Motor Drive Data Horizontal Supply Return UNIT 48PD 05 08 VOLTAGE volts 208 230 and 4...

Page 9: ...ure to follow this caution may result in personal injury For vertical supply and return units tools or parts could drop into ductwork and cause an injury Install a 90 turn in the return ductwork betwe...

Page 10: ...ate drain and external trap can be completed after the unit COMBUSTION is in place FANHOUSING All units must have an external trap for condensate drainage Install a trap at least 4 in deep and protect...

Page 11: ...de If gas supply is not de rated use accessory high altitude kit when installing this unit at an elevation of 2000 to 7000 ft For elevations above 7000 ft refer to Table 6 to identify the correct orif...

Page 12: ...mple a 3 4 in gas piping must have one field fabricated support beam every 8 ft Therefore an 18 ft long gas pipe would have a minimum of 3 support beams See Fig 10 for typical pipe guide and locations...

Page 13: ...al iniury or death Unit cabinet must have an uninterrupted unbroken electrical ground to minimize the possibility of personal iniury if an electrical fault should occur This ground may consist of elec...

Page 14: ...ly air temperature is lowered to produce a colder evaporator coil and lower dew point temperature When humidistat is satisfied the supply air temperature is reset to the original supply air temperatur...

Page 15: ...33 9 50 50 ALT 5 2 33 9 33 9 50 50 17 9 110 1 1 5 0 52 YES 1 4 STD 5 2 35 3 35 3 50 50 ALT 5 2 35 3 35 3 50 50 STD 2 6 15 4 20 ALT 2 6 15 4 20 7 8 52 1 0 8 0 30 YES 0 6 STD 2 6 16 0 20 ALT 2 6 16 0 2...

Page 16: ...ing hood until top flange of the economizer hood engages the bent flange on the economizer panel Rotate hood until hood is flush with the economizer panel Hood will support itself from flange Align ho...

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