LG Electronics 395CAV Ðgas Rate CU FT/HR, → ÐRedundant Automatic Gas Control Valve

TABLE 7ÐGAS RATE CU FT/HR

SECONDS		SIZE OF			SECONDS		SIZE OF
	TEST DIAL					TEST DIAL
FOR 1					FOR 1
	1		2	5		1		2	5
REVOLUTION					REVOLUTION
	cu ft		cu ft	cu ft		cu ft		cu ft	cu ft
10	360		720	1800	50	72		144	360
11	327		655	1636	51	71		141	355
12	300		600	1500	52	69		138	346
13	277		555	1385	53	68		136	340
14	257		514	1286	54	67		133	333
15	240		480	1200	55	65		131	327
16	225		450	1125	56	64		129	321
17	212		424	1059	57	63		126	316
18	200		400	100	58	62		124	310
19	189		379	947	59	61		122	305
20	180		360	900	60	60		120	300
21	171		343	857	62	58		116	290
22	164		327	818	64	56		112	281
23	157		313	783	66	54		109	273
24	150		300	750	68	53		106	265
25	144		288	720	70	51		103	257
26	138		277	692	72	50		100	250
27	133		267	667	74	48		97	243
28	129		257	643	76	47		95	237
29	124		248	621	78	46		92	231
30	120		240	600	80	45		90	225
31	116		232	581	82	44		88	220
32	113		225	563	84	43		86	214
33	109		218	545	86	42		84	209
34	106		212	529	88	41		82	205
35	103		206	514	90	40		80	200
36	100		200	500	92	39		78	196
37	97		195	486	94	38		76	192
38	95		189	474	96	38		75	188
39	92		185	462	98	37		74	184
40	90		180	450	100	36		72	180
41	88		176	439	102	35		71	178
42	86		172	429	104	35		69	173
43	84		167	419	106	34		68	170
44	82		164	409	108	33		67	167
45	80		160	400	110	33		65	164
46	78		157	391
					112	32		64	161
47	76		153	383
					116	31		62	155
48	75		150	375
					120	30		60	150
49	73		147	367

(3.) When correct input is obtained, replace regulator seal cap. Main burner flame should be clear blue, almost transparent. (See Fig. 13.)

ON AND

OFF SWITCH

GAS

PRESSURE

REGULATOR

ADJUSTMENT

INLET

PRESSURE TAPMANIFOLD

PRESSURE TAP

A95618

→Fig. 12ÐRedundant Automatic Gas Control Valve

d.High altitudeÐIn the United States gas input on rating plate is for altitudes up to 2000 ft. Ratings for altitudes over 2000 ft must be 4 percent less for each 1000 ft above sea level. To obtain the adjusted altitude rating, adjust the manifold pressure (see item c) and replace the main burner orifices as needed. Refer to National Fuel Gas Code Appendix F, Table F-4 for proper orifice sizing at high altitudes.

Ð13Ð

BURNER FLAME

BURNER

MANIFOLD

A89020

Fig. 13ÐBurner Flame

e. Canadian installations onlyÐThe Canadian ratings are approved for altitudes up to 2000 ft for natural and propane gases. High-altitude ratings are from 2000 ft to 4500 ft above sea level. See Table 8 for nominal burner orifice size. High-altitude rating includes a 10 percent derate as required by Canadian standards.

TABLE 8ÐCANADIAN ORIFICE SIZE

GAS	SEA LEVEL	HIGH ALTITUDE
	0Ð2000 FT	2000Ð4500 FT
Natural	43	44
Propane	54	55

2.Set temperature rise.

Furnace must operate within range of temperature rise specified on the unit rating plate. Determine the air tem- perature rise as follows.

a.Place duct thermometers in return and supply ducts as near furnace as possible. Be sure thermometers do not "see" heat exchangers so that radiant heat will not affect thermometer readings. This is particularly important with straight-run ducts.

b.When thermometer readings stabilize, subtract return-air temperature from supply-air temperature to determine temperature rise.

c.Adjust air temperature rise by adjusting blower speed. Increase blower speed to reduce temperature rise. De- crease blower speed to increase temperature rise.

WARNING: Disconnect the electrical power before changing the speed tap. A failure to follow this warning can cause personal injury.

d. To change blower motor speed selections for heating mode, remove blower motor lead from control board HEAT terminal. (See Fig. 11.) Select desired blower motor speed lead from 1 of the other terminals and relocate it to HEAT terminal. See Table 9 for lead color identification. Reconnect original lead on SPARE termi- nal.

CAUTION: Recheck temperature rise. It must be within limits specified on unit rating plate. Recommended op- eration is at midpoint of rise or above.