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Carrier COMFORTLINK 48A2 manual

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Table of contents for the manual

  • Page 1

    Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 04-53480 052-01 Printed in U. S.A. F orm 48A-5SO Pg 1 3-08 Replaces: 48A-3SO Book 1 Ta b 1 a User’ s Inf or mation Man ual NO TE T O INST ALLER This manual should be left with the equip[...]

  • Page 2

    2 GA S HEA T S ECTION (P ANEL REMOVED) GA S VA LV E Fig. 1 — T ypical Gas Section Location (4 8A3027 Sho wn) Fig. 2 — T ypical Gas V alve Location ( 48A2,A3,A4,A5020- 050 Show n) A48-8367 a48-3766tf[...]

  • Page 3

    3 STEP 1 Fig. 3 — To Light Unit STEP 5 STEP 4 STEP 3 STEP 2 STEP 7 STEP 6 STEP 10 STEP 8 STEP 9 Run Status Service T est T emperature Pressures Setpoints Inputs Outputs Configuration Time Clock Operating Modes Alarms Alarm Status ENTER MODE ESCAPE Run Status Service T est T emperature Pressures Setpoints Inputs Outputs Configuration Time Clock Op[...]

  • Page 4

    4 6. Move the switch on the gas valve to the ON position. 7. Replace the gas section access panels. 8. T urn on the electrical supply to the units. 9. Open the field-installed manual gas valve. 10. Using the scrolling marquee, enable the unit to run using the following procedure: a. Push the key unit a bl ank display screen is shown. b. Push the ke[...]

  • Page 5

    5 STEP 1 Fig. 4 — To Shut Unit Off STEP 5 STEP 4 STEP 3 STEP 2 STEP 6 Run Status Service T est T emperature Pressures Setpoints Inputs Outputs Configuration Time Clock Operating Modes Alarms Alarm Status ENTER MODE ESCAPE a30-2239ef a48-924tf a48-925tf a48-3767tf a48-3768tf[...]

  • Page 6

    6 Air Filter(s) — Air filter(s) should be checked monthly and changed when necessary . Un its may have either 2-in. or 4-in. thick filters. For units with 2-in. thick filters, all filters will be 20 x 24 x 2-in. size. For units with 4-in. thick filters, half the filters will be 20 x 24 x 4-in. size and half will be 20 x 20 x 4-in. size. The filte[...]

  • Page 7

    7 6. Observe unit heating operation. W atch the burner flame to see if it is bright blue . If you observe a suspected mal- function or if the flame is not bright blue, call your dealer . 7. Replace gas secti on access panels. Unit P anels — After performing any maintenance or service on the unit, be sure all panels are securely fastened in place [...]

  • Page 8

    Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No . 04-53480052-01 Printed in U. S.A. Form 48A-5SO Pg 8 3-08 Replaces: 48A-3SO Book 1 Ta b 1 a Copy right 2008 Carrier Cor poration[...]