Instruction/ maintenance manual of the product 48A2 Carrier
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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 .
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 a48-3766.
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 Oper.
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.
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 S.
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.
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 .
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 .
An important point after buying a device Carrier 48A2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 48A2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 48A2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 48A2 you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 48A2 will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 48A2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 48A2.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 48A2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 48A2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
