Bryant 362AAN ÐRemoving Combustion Chamber, V.Keeping Filters Clean, → Ðairflow Data Cfm

A

B

A96398

3.Remove screws securing blower legs to blower rails mounted on bottom panel of furnace.

4.Slide blower forward on rails toward rear of unit until motor wire connections at terminal block on motor can easily be reached and disconnected.

5.Disconnect motor wires at terminal block on motor.

Fig. 4ÐRemoving Combustion Chamber

17.Use a stiff brush and vacuum cleaner to clean inside of primary drum.

6.Remove blower from unit.

7.Reverse items 1 through 6 to reinstall blower. Refer to wiring diagram (Fig. 7) of these instructions or diagram located on inside of louvered door to properly rewire unit.

CAUTION: Never use incendiary type cleaners (smoke sticks) for cleaning!

WARNING: For all heat exchanger plates that have been removed, the gaskets MUST be replaced. Failure to replace gaskets could lead to heat exchanger leakage, sooting, and a hazardous condition which could lead to bodily harm.

18.Before reassembly, heat exchanger and combustion cham- ber should be inspected to determine if replacement is required. After cleaning, place combustion chamber back into primary drum and secure with "B" screws. Ensure that cover plate gasket is in place before tightening screws. Care must be taken not to damage combustion chamber. The "B" screws should be tightened to 35-45 lb-in.

19.Tighten "A" nuts to 30 lb-in. of torque (firm, but not overly tight).

20.Replace intermediate panel, observation tube collar, obser- vation door, limit wiring, and oil burner.

21.Replace collector box on secondary tube flange, ensuring proper placement of gasket. Tighten screws to 35-45 lb-in. of torque.

22.Replace top partition, inside collar on flue pipe, top rear panel, outside flue collar, and blower door.

23.Reconnect flue pipe and oil line(s).

24.Readjust burner for proper operation. Check limit operation as outlined in Limit Control Check section.

V.KEEPING FILTERS CLEAN

WARNING: Never operate unit without a filter or with filter access door removed. Failure to adhere to this warning could lead to a hazardous condition which could lead to equipment damage and bodily harm.

As a homeowner, keeping filters clean is your most important responsibility. A dirty filter reduces efficiency of your system, causes erratic performance of controls, and could result in damage to motor or heating element.

1.Inspect filters at regular intervals depending upon dirt conditions. For new homes, check filters every week for 4 consecutive weeks. In all cases, inspect filters at least every 3 to 4 weeks when system is in constant operation. Replace or clean filter at least at beginning of each season (heating and cooling) and thereafter as needed.

2.If a permanent filter is used, it can be cleaned with cold water and soap.

Be sure that filter is thoroughly dry before installing back into furnace.

IV. BLOWER OILING AND REMOVAL

Periodic oiling of blower motor may be necessary. Check for instructions on inside of blower access door.

If it is ever necessary to remove blower from furnace:

1. Turn off all electrical power to furnace. A95103

2. Remove blower door.

→TABLE 5ÐAIRFLOW DATA (CFM)

UNIT	BLOWER				EXTERNAL STATIC PRESSURE IN. WC
SIZE	SPEED	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0
	High	1795	1735	1675	1605	1550	1485	1425	1350	1275	1220
036105
	Medium	1365	1335	1305	1275	1255	1215	1155	1105	1050	985
	Low	995	965	945	925	900	870	825	775	725	670
	High	1905	1845	1770	1695	1630	1565	1490	1425	1325	1220
048125
	Medium	1750	1675	1620	1560	1500	1440	1370	1305	1235	1130
	Low	1390	1350	1305	1260	1220	1180	1120	1060	985	880
	High	2025	1960	1905	1850	1800	1665	1575	1500	1415	1315
060155
	Medium	1885	1825	1760	1705	1640	1565	1500	1430	1350	1265
	Low	1555	1490	1445	1410	1350	1280	1230	1155	1085	1005

NOTES: 1. Airflow values in cubic ft per minute (CFM) rounded to nearest 5 CFM. 2. Data taken without filters in place.

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