Bryant 698B Accessory Usage, Required LIQUID-LINE Temperature F, Sweat Connection, Leak Checking

TABLE 2—ACCESSORY USAGE

	REQUIRED FOR LONG-LINE	REQUIRED FOR SEA-COAST
ACCESSORY	APPLICATIONS*	APPLICATIONS*
	(OVER 50 FT)	(WITHIN 2 MILES)
Coastal Filter	No	Yes
Support Feet	No	Recommended
Puron® Hard Shutoff TXV	Yes†	Yes†
Puron® Liquid-Line Solenoid Valve for Heating	LHALS0401LLS	No

*For tubing line sets between 50 and 175 ft, or more than 20 ft vertical differential refer to Application Guideline and Service Manual for Residential Split-System Air Conditioners and Heat Pumps using Puron® Refrigerant.

† Required for all applications.

TABLE 3—REQUIRED LIQUID-LINE TEMPERATURE (°F)

LIQUID PRESSURE AT	REQUIRED SUBCOOLING TEMPERATURE
SERVICE VALVE			(°F)
(PSIG)	5	10		15	20
174	56	51		46	41
181	58	53		48	43
188	61	56		51	46
195	63	58		53	48
202	65	60		55	50
209	67	62		57	52
216	69	64		59	54
223	71	66		61	56
230	73	68		63	58
237	75	70		65	60
244	77	72		67	62
251	79	74		69	64
258	81	76		71	66
265	82	77		72	67
272	84	79		74	69
279	86	81		76	71
286	88	86		78	73
293	89	84		79	74
300	91	86		81	76
307	93	88		83	78
314	94	89		84	79
321	96	91		86	81
328	97	92		87	82
335	99	94		89	84
342	100	95		90	85
349	102	97		92	87
356	103	98		93	88
363	105	100		95	90
370	106	101		96	91
377	107	102		97	92
384	109	104		99	94
391	110	105		100	95
398	112	107		102	97
405	113	108		103	98
412	114	109		104	99
419	115	110		105	100
426	117	112		107	102
433	118	113		108	103
440	119	114		109	104
447	120	115		110	105
454	122	117		112	107
461	123	118		113	108
468	124	119		114	109
475	125	120		115	110
482	126	121		116	111
489	127	122		117	112
496	129	124		119	114
503	130	125		120	115
510	131	126		121	116
517	132	127		122	117
524	133	128		123	118
531	134	129		124	119
538	135	130		125	120
545	136	131		126	121
552	137	132		127	122
559	138	133		128	123
566	139	134		129	124
573	140	135		130	125
580	141	136		131	126
587	142	137		132	127
594	143	138		133	128
601	144	139		134	129
608	145	140		135	130

—5—

C. REFRIGERANT TUBING AND FILTER DRIER

CAUTION: Installation of filter drier in liquid line is required.

Connect vapor tubing to fittings on outdoor unit vapor service valve. Connect liquid tubing to filter drier. (See Table 1 and Fig. 9.) Use refrigerant grade tubing. Connect other end of filter drier to adapter tube on liquid service valve.

D. SWEAT CONNECTION

CAUTION: To avoid valve damage while brazing, ser- vice valves must be wrapped in a heat-sinking material such as a wet cloth.

Wrap service valves and filter drier with a wet cloth or heat- sinking material. Braze connections using either silver bearing or non-silver bearing brazing material. Do not use soft solder (materials which melt below 800°F). Consult local code require- ments.

CAUTION: To prevent damage to unit or service valves, observe the following:

• Use a brazing shield.

•Wrap service valves with wet cloth or use a heat sink material.

E.LEAK CHECKING

Leak test all joints in indoor, outdoor, and refrigerant tubing.

F.EVACUATE REFRIGERANT TUBING AND INDOOR COIL

CAUTION: To avoid compressor damage never use the system compressor as a vacuum pump.

Refrigerant tubes and indoor coil must be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used if the procedure outlined below is followed.

IMPORTANT: Never open system under vacuum to atmosphere without first breaking it open with nitrogen.

SENSING BULB

STRAP

SUCTION

TUBE

8 O'CLOCK	4 O'CLOCK
	A02000

Fig. 7—Positioning of Sensing Bulb