Bryant 597C instruction manual Superheatcharging, Xii. Final Checks, Care And Maintenance

TABLE 3—SUPERHEAT CHARGING

OUTDOOR							EVAPORATOR ENTERING AIR TEMPERATURE (°F WB)
TEMP
	50	52		54		56		58		60	62	64	66	68	70	72	74	76
(°F)
55	9	12		14		17		20		23	26	29	32	35	37	40	42	45
60	7	10		12		15		18		21	24	27	30	33	35	38	40	43
65	—	6		10		13		16		19	21	24	27	30	33	36	38	41
70	—	—		7		10		13		16	19	21	24	27	30	33	36	39
75	—	—	—			6		9		12	15	18	21	24	28	31	34	37
80	—	—	—		—			5		8	12	15	18	21	25	28	31	35
85	—	—	—		—		—		—		8	11	15	19	22	26	30	33
90	—	—	—		—		—		—		5	9	13	16	20	24	27	31
95	—	—	—		—		—		—	—		6	10	14	18	22	25	29
100	—	—	—		—		—		—	—	—		8	12	15	20	23	27
105	—	—	—		—		—		—	—	—		5	9	13	17	22	26
110	—	—	—		—		—		—	—	—	—		6	11	15	20	25
115	—	—	—		—		—		—	—	—	—	—		8	14	18	23

Where a dash (–) appears, do not attempt to charge system under these conditions, or refrigerant slugging may occur. Charge must be weighed in. NOTE: Superheat °F is at low-side service port.

4.Measure outdoor air dry-bulb temperature with thermom- eter.

5.Measure indoor air (entering indoor coil) wet-bulb tempera- ture with a sling psychrometer.

6.Refer to Table 3. Find outdoor temperature and evaporator entering air wet-bulb temperature. At this intersection, note superheat.

7.Refer to Table 4. Find superheat temperature located in item 6 and suction pressure. At this intersection, note suction- line temperature.

8.If unit has a higher suction-line temperature than charted temperature, add refrigerant until charted temperature is reached.

9.If unit has a lower suction-line temperature than charted temperature, reclaim refrigerant until charted temperature is reached.

10.If outdoor air temperature or pressure at suction valve changes, charge to new suction-line temperature indicated on chart.

XII. FINAL CHECKS

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

1.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 performed on this equipment.

Frequency of maintenance may vary depending upon geographic areas, such as coastal applications.

See the User’s Information Manual for this equipment for fre- quency and type of maintenance required.

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