Care And Maintenance - Bryant R-22 Application Manual And Service Manual

TABLE 23—SUBCOOLING AT LIQUID-SERVICE VALVE FOR UNITS PRODUCED THROUGH DECEMBER, 1992
Model 590A 591A/592A
Series A B C A
014 14 14 — 14
018 17 17 — 14
024 13 13 — 17
030 15 15 — 9
036 13 12 — 16
038 — — — —
042 13 13 14 16
048 15 14 — 18
060 19 22 — 18
Model 690A
Series A B C
014 7 7 7
018 18 18 18
024 18 18 18
030 13 13 13
036 18 18 18
042 13 11 11
048 22 17 15
060 23 23 23
CUBE UNIT—AIR CONDITIONERS
MODEL
561A/571A
Series A
014 —
018 15
024 14
030 12
036 18
042 18
048 —
060 —
2. Measure liquid service-valve pressure by attaching an
accurate gage to the service port.
3. Measure the liquid-line temperature by attaching an accu-
rate thermistor-type or electronic thermometer to the liquid
line near the outdoor coil.
4. Refer to unit-rating plate to find required subcooling
temperature for units produced during or after January
1993. For units produced through December 1992, refer to
Table 23. Find the point at which the required subcooling
temperature intersects the measured liquid service-valve
pressure on Table 24.
5. To obtain the required subcooling temperature at a specific
liquid-line pressure, add refrigerant if liquid-line tempera-
ture is higher than indicated or remove refrigerant if
temperature is lower. Allow a tolerance of 3°F.

CARE AND MAINTENANCE

To assure high performance and minimize possible equipment
malfunction, it is essential that maintenance be performed periodi-
RELIANT AIR CONDITIONERS
593A/594A
B C D A B C
14 14 — 6 6 —
14 14 — 7 7 —
17 17 — 8 8 —
10 10 — 6 6 10
16 16 — 12 12 5
— — — — — —
19 19 15 12 12 —
14 18 — 14 14 —
18 18 — 14 14 —
RELIANT HEAT PUMPS
691A/692A 693A/694A
D A B A
— — — —
— 16 16 11
— 16 16 11
— 20 20 10
— 14 14 10
— 18 18 15
14 19 14 13
— 13 13 14
B
—
16
11
12
16
17
17
21
593B 593C 594C
D A B A B A
— — — — — —
— 11 — 9 9 —
— 13 — 16 21 12
13 11 — 15 15 14
— 9 — 13 12 16
— 16 — — — —
— 11 — 13 — 21
— 18 — 17 — 14
— 11 — 16 — 19
693B 693C 694C
B A A A
— — — —
11 10 9 7
11 13 6 5
10 11 10 10
10 11 13 12
15 12 10 12
13 — 15 12
14 — 15 10
CUBE UNIT—HEAT PUMPS
661A/671A
A B
— —
11 14
14 8
9 10
11 7
7 —
12 —
10 —
cally on this equipment. The frequency with which maintenance is
performed is dependent on such factors as hours of operation,
geographic location, and local environmental conditions.
WARNING: Disconnect all electrical power to unit
before performing any maintenance or service on outdoor
unit. Remember to disconnect power supply to air handler
as this unit supplies low-voltage power to the outdoor
unit. Electric shock can cause personal injury or death.
The minimum maintenance that should be performed on this
equipment is as follows.
1. Check outdoor coil for cleanliness each month during the
heating (heat pump only) or cooling season and clean as
necessary, but clean at least once each heating (heat pump
only) and cooling season.
2. Check fan motor and blade for cleanliness each heating and
cooling season and clean as necessary.
—45—
595A 596A 597A 597B
B A A A A
— — — — —
— 9 8 — —
— 13 12 11 13
— 10 9 10 11
— 14 13 12 14
— — — — —
— 11 11 15 15
— 10 10 11 11
— — — 12 11
697A 697B Cooling
High Low
A A A A
— — — —
9 10 — —
11 11 — —
9 10 — —
9 10 12 7
11 12 — —
10 11 14 9
12 7 14 9
HORIZONTAL AIR CONDITIONERS
566D
C D
10 —
12 —
— —
— 12
— —
— —
— —
— —
598A 598A
High Low
A A
— —
— —
— —
— —
12 9
— —
— —
12 9
12 9
698A
Heating
High Low
A A
— —
— —
— —
— —
18 15
— —
25 18
22 21
566E
A
—
17
19
—
—
—
—