Carrier 38YKC Instruction Manual download pdf (Page 12)

OUTDOOR

TEMP

(°F)

tOO

106

110

115

Table 5--Superheat Charging

EVAPORATOR ENTERING AiR TEMPERATURE ('F WB)

50 52 54 56 58 60 62 64 66 68 70 72 74 76

9 12 14 17 20 23 26 29 32 35 37 40 42 45

7 10 t2 16 18 21 24 27 30 35 35 38 40 43

6 10 13 16 19 21 24 27 30 33 36 38 41

-- 7 10 13 16 19 21 24 27 30 33 36 39

-- -- 6 9 12 15 10 21 24 26 31 34 37

-- -- -- 5 8 12 15 16 21 25 26 3! 35

..... 8 11 15 19 22 26 30 33

..... 5 9 13 16 20 24 27 31

...... 6 10 14 18 22 25 29

........ 8 12 15 20 23 27

....... 5 9 13 17 22 26

....... 6 11 15 20 25

......... 6 14 t8 23

be weighedin.

-- Where a dash a )ears, do not attempt to charge system under these conditions or refrigerant slugging may OCCur. Charge must

NOTE: Superheat °F is at low-side sewice port.

Table 6---Required Suction-Line Tube Temperature (°F)

SUPERHEAT SUCTION PRESSURE AT SERVICE PORT (PSlG)

61.5

64.2

67,1

70.0

73.0

76.0

TEMP

(°F)

79.2

82.4

85.7

10. If outdoor air temperature or pressure at suction valve

changes, charge to new suction line temperature indicated on

chart.

HEATING CHECK CHART PROCEDURE

To check system operation during heating cycle, refer to the

Heating Check Chart on outd(x3r unit. This chart indicates whether

a correct relationship exists between system operating pressure and

air temperature entering indoor and outdoor units. If pressure and

temperature do not match on chart, system refrigerant charge may

not be correct. Do not use chart to adjust refrigerant charge.

NOTE: When charging is necessary during heating season,

charge must be weighed in accordance with unit rating plate + 0.6

oz/ft of 3/8-in. liquid line ab_we or below 15 ft respectively.

EXAMPLE:

To calculate additional charge required I_,r a 25-ft line set:

25 ft - 15 ft = 10 ft X 0.6 oz/ft = 6 oz of additional charge

---)'Step 14_Final Checks

IMPORTANT: Before leaving job, be sure to do the following:

I. Securely fasten all panels and covers.

2. Tighten service valve stem caps to 1/12-turn past finger tight.

3. Leave User's Manual with owner. Explain system operation

and periodic maintenance requirements outlined in manual.

4. Fill out Dealer Installation Checklist and place in customer

file.

CARE AND MAINTENANCE

For continuing high performance and to minimize possible equip-

ment failure, periodic maintenance must be pertbrmed on this

equipment.

Frequency of maintenance may vary depending upon geo_m'aphic

areas, such as coastal applications.

Manufacturer reserves the dght to discontinue, or change at any time, specifications or designs without notice and without Incurring obligatlorls.

PC 101 Catalog No. 563 718 Printed in U.S.A Form 38YKC_2SI Pg 12 11-96 Replaces: 38YKC-1SI

1 2 ... 7 8 9 10 11 12

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Carrier 38YKC Instruction Manual Page 12

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