Gibson KG7S High Efficiency Single Stage Condensing Upflow Horizontal and Downflow Gas Furnace Models User Manual

Contents hide

1 TECHNICAL SPECIFICATIONS

2 FEATURES and BENEFITS

3 GAS FURNACE COMPONENTS

4 DIMENSIONS

5 SPECIFICATIONS

6 ACCESSORIES

7 Documents / Resources

7.1 References

TECHNICAL SPECIFICATIONS

KG7S (D and M Series)
High Efficiency,
Single Stage Condensing,
Upflow/Horizontal and Downflow Gas
Furnace Models
95.0 AFUE
38,000 – 120,000 Btuh Input

The high efficiency upflow gas furnace may be installed free standing in a utility room, basement, or enclosed in an alcove or closet. Upflow/Horizontal units come ready for upflow or horizontal application. The extended flush jacket provides a pleasing “appliance appearance.” Design certified by CSA for application in Canada and the United States.

FEATURES and BENEFITS

100% fired and tested — All units and each component are tested on the manufacturing line.
Best packaging in the industry — Unique corner post design assures product will arrive to the homeowner dent free.
30 second blower delay at start-up assures a warm duct temperature at furnace start-up. Adjustable blower off settings (60, 90, 120 and 180 seconds).
30 second post purge increases life of heat exchanger.
Hot surface igniter — Innovative application of an appliance type igniter with a 20 year history of reliability. Utilizes proven Smartlite® technology.
Color coded wire harness — Designed to fit the components, all with quick-connect fittings for ease of service and replacement.
Flexible category IV venting system — May be vertically or horizontally vented using either a one-pipe or two-pipe system for maximum flexibility in installation.
High Static Blowers — All models equipped with high static blowers.
Low Boy Height — Easy to apply in low ceiling applications, works well with taller high SEER coils, easier to handle and install.
Tubular primary heat exchanger — Heavy gauge aluminized steel heat exchanger and stainless steel secondary heat exchanger assures a long life.
60 second fixed cooling cycle blower-off delay (TDR) increases cooling performance when matched with a Nortek Global HVAC coil.
High efficiency blower kits maximize efficiencies. On select units, a SEER improvement of up to 1 point is realized.
Multi-speed direct drive blower — Designed to give a wide range of cooling capacities. Switches on PCB, provide ultra easy motor speed selection.
LP convertible — Simple burner orifice and regulator spring change for ease of convertibility.
Diagnostic lights for easy troubleshooting without counting flashes — Dedicated light for flame signal strength and 2 lights in combination to indicate all other fault codes with easy to recognize states without counting flashes.
Incorporates integrated control board with connections for electronic air cleaner, humidifier, and twinning.
Two piece door design enhances furnace appearance and uses captured screws to prevent losing door screws.
Seated vestibule reduces burner and inducer sound levels.
Furnace Air Leakage: These furnaces comply with Energy Star cabinet air leakage requirement of less than or equal to 2%. Keep the conditioned air flowing to where it’s needed.

GAS FURNACE COMPONENTS

DIMENSIONS

*SD Upflow / Horizontal Furnaces
Model #’s	Dim. -A-	Dim -B-	Dim -C-
038D-24B	17 1/2	15 7/8	16 1/8
054D-24B
072D-35C	21	19 3/8	19 5/8
090D-35C
108D-45D	24 1/2	22 7/8	23 1/8
120D-45D

NOTE: Dimensions shown in inches.

*SM Downflow Furnaces
Model #’s	Dim. -A-	Dim. -B-	Dim. -C-
054D-24B	17 1/2	15 7/8	16 1/8
072D-35C	21	19 3/8	19 5/8
090D-35C	21	19 3/8	19 5/8
118D-450	24 1/2	22 7/8	23 1/8

NOTE: Dimensions shown in inches.

MODEL IDENTIFICATION CODE

* 118 = 118,000 for SM Models

SPECIFICATIONS

KG7SD MODEL NUMBERS:	-038D-24B	-054D-24B	-072D-35C	-090D-35C	-108D-45D	-120D-45D
Input – Btuh (a)	38,000	54,000	72,000	90,000	108,000	120,000
Heating Capacity – Btuh	36,100	51,300	68,400	85,500	102,600	114,000
AFUE	95.0	95.0	95.0	95.0	95.0	95.0
Blower D x W	10 x 8	11 x 8	10 x 10	1 x 10	11 x 10	11 x 10
Motor H.P. – Speed – Type	1/2 – 4 – PSC	1/2 – 4 – PSC	1/2 – 4 – PSC	1 – 4 – PSC	1 – 4 – PSC	1 – 4 – PSC
Motor FLA	8.6	8.6	8.0	13.75	13.75	13.75
Rated Ext. SP – In. W.C.	0.5	0.5	0.5	0.5	0.5	0.5
Temperature Rise Range – ºF	30-60	30-60	35-65	35-65	40-70	40-70
Shipping Weights	100lbs	120lbs	130lbs	135lbs	155lbs	155lbs

KG7SM MODEL NUMBERS:	-054D-24B	-072D-35C	-090D-35C	-118D-45D
Input – Btuh (a)	54,000	72,000	90,000	118,000
Heating Capacity – Btuh	51,300	68,400	85,500	112,100
AFUE	95.0	95.0	95.0	95.0
Blower D x W	11 x 8	11 x 10	11 x 10	11 x 10
Motor H.P. – Speed – Type	1/2 – 4 – PSC	1 – 4 – PSC	1 – 4 – PSC	1 – 4 – PSC
Motor FLA	8.6	13.7	13.7	13.75
Rated Ext. SP – In. W.C.	0.5	0.5	0.5	0.5
Temperature Rise Range – ºF	30-60	35-65	35-65	40-70
Shipping Weights	120lbs	125lbs	135lbs	155lbs

Note:
All models are 115V, 60 Hz. Gas Connections are 1/2″ N.P.T. AFUE = Annual Fuel Utilization Efficiency
(a) Ratings to 2,000 ft. Over 2,000 ft. reduce 4% for each 1,000 ft. above sea level.

BLOWER PERFORMANCE – KG7SD

MAXIMUM AIRFLOW & TEMPERATURE RISES (0 F) FOR *SD SERIES UPFLOW / HORIZONTAL FURNACES
Model Number & Heating Input (Btuh)	Motor Speed	External Static Pressure (Inches Water Column)
		0.1		0.2		0.3		0.4		0.5		0.6		0.7		0.8
		CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise
	HIGH*	1519	—	1483	—	1433	—	1397	—	1335	—	1272	—	1214	—	1130	—
SD038D-24B Bottom Return (38,000)	MED-H** MED-L	1238 1094	—	1216 1082	—	1188 1052	—	1164 1034	—	1136 1021	30 34	1092 977	31 34	1043 928	32 36	973 865	34 37
SD038D-24B Bottom Return (38,000)	MED-H** MED-L	1238 1094	31	1216 1082	32	1188 1052	32	1164 1034	33	1136 1021	30 34	1092 977	31 34	1043 928	32 36	973 865	34 37
	LOW	841	40	817	42	801	43	786	45	750	46	720	48	683	49	639	53
	HIGH*	1664	—	1631	—	1596	—	1546	—	1489	—	1433	—	1366	—	1285	—
SD038D-24B Side Return (38,000)	MED-H MED-L**	1272 1130	— —	1255 1114	—	1249 1100	—	1217 1079	—	1189 1048	—	1145 1025	30 33	1096 987	31 35	1036 944	33 36
SD038D-24B Side Return (38,000)	MED-H MED-L**	1272 1130	— —	1255 1114	31	1249 1100	31	1217 1079	31	1189 1048	33	1145 1025	30 33	1096 987	31 35	1036 944	33 36
	LOW	869	39	839	42	809	42	790	44	764	45	739	47	711	48	664	52
	HIGH*	1519	33	1483	34	1433	35	1397	36	1335	37	1272	39	1214	41	1130	44
SD054D-24B	MED-H	1238	40	1216	41	1188	42	1164	43	1136	44	1092	46	1043	48	973	51
Bottom Return (54,000)	MED-L**	1094	46	1082	46	1052	48	1034	48	1021	49	977	51	928	54	865	58
	LOW	841	59	817	—	801	—	786	—	750	—	720	—	683	—	639	—
	HIGH*	1664	30	1631	31	1596	31	1546	32	1489	34	1433	35	1366	37	1285	39
SD054D-24B Side Return (54,000)	MED-H MED-L**	1272 1130	39 44	1255 1114	40 45	1249 1100	40 45	1217 1079	41 46	1189 1048	42 48	1145 1025	44 49	1096 987	46 51	1036 944	48 53
	LOW	869	58	839	60	809	—	790	—	764	—	739	—	711	—	664	—
	HIGH*	1933	—	1857	36	1780	37	1695	39	1599	42	1498	45	1396	48	1280	52
SD072D-35C Bottom Return (72,000)	MED-H** MED-L	1872 1320	36 51	1804 1299	37 51	1731 1264	39 53	1639 1233	41 54	1551 1183	43 56	1458 1126	46 59	1353 1059	49 63	1237 963	54
SD072D-35C Bottom Return (72,000)	MED-H** MED-L	1872 1320	36 51	1804 1299	37 51	1731 1264	39 53	1639 1233	41 54	1551 1183	43 56	1458 1126	46 59	1353 1059	49 63	1237 963	—
	LOW	1185	56	1170	57	1132	59	1102	60	1067	62	1015	—	947	—	856	—
	HIGH*	1916	35	1848	36	1773	38	1692	39	1613	41	1515	44	1426	47	1316	51
SD072D-35C Side Return (72,000)	MED-H** MED-L	1815 1259	37 53	1771 1241	38 54	1711 1224	39 54	1641 1192	41 56	1553 1163	43 57	1468 1115	45 60	1373 1056	49 63	1270 982	52
SD072D-35C Side Return (72,000)	MED-H** MED-L	1815 1259	37 53	1771 1241	38 54	1711 1224	39 54	1641 1192	41 56	1553 1163	43 57	1468 1115	45 60	1373 1056	49 63	1270 982	—
	LOW	1139	59	1120	60	1096	61	1075	62	1047	64	1014	—	959	—	884	—
SD72D-35C Side + Bottom or 2 Sides (72,000)	HIGH* MED-H** MED-L	1954 1869 1287	—	1890 1805 1262	35 37 53	1824 1741 1231	37 38 54	1741 1685 1197	38 40 56	1656 1607 1166	40 41 57	1564 1516 1117	43 44 60	1470 1419 1061	45 47 63	1352 1308 966	49 51
			36 52														49 51
																	—
													—		—		—
	LOW	1147	58	1115	60	1097	61	1075	62	1047	64	1014	—	959	—	884	—
	HIGH*	2288	36	2236	37	2161	39	2092	40	2017	41	1934	43	1841	45	1748	48
SD090D-35C Bottom Return (90,000)	MED-H** MED-L	2144 1874	39 44	2093 1845	40 45	2049 1806	41 46	1985 1766	42 47	1912 1717	44 49	1842 1661	45 50	1764 1582	47 53	1668 1503	50 55
	LOW	1541	54	1516	55	1509	55	1486	56	1456	57	1402	59	1361	61	1294	64
	HIGH*	2273	37	2222	38	2164	39	2098	40	2025	41	1947	43	1864	45	1780	47
SD090D-35C Side Return (90,000)	MED-H** MED-L	2084 1784	40 47	2039 1777	41 47	2007 1749	42 48	1955 1725	43 48	1895 1679	44 50	1832 1629	45 51	1750 1576	48 53	1665 1501	50 56
	LOW	1482	56	1470	57	1444	58	1432	58	1405	59	1375	61	1339	62	1286	65
SD90D-35C Side + Bottom or 2 Sides (90,000)	HIGH* MED-H** MED-L	2328 2124 1825	36 39 46	2273 2108 1809	37 40 46	2224 2052 1781	37 41 47	2151 2018 1752	39 41 48	2082 1954 1706	40 43 49	2005 1884 1676	42 44 50	1920 1813 1615	43 46 52	1825 1725 1535	46 48 54
	LOW	1509	55	1488	56	1468	57	1440	58	1422	59	1379	60	1351	62	1292	64

Table 1. *SD Upflow / Horizontal Furnaces

BLOWER PERFORMANCE – KG7SD Continued

MAXIMUM AIRFLOW & TEMPERATURE RISES (0 *F) FOR UPFLOW / HORIZONTAL FURNACES (SD SERIES)**
Model Number & Heating Input (Btuh)	Motor Speed	External Static Pressure (Inches Water Column)
		0.1		0.2		0.3		0.4		0.5		0.6		0.7		0.8
		CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise
SD108D-45D Bottom Return (108,000)	HIGH* MED-H** MED-L LOW	2276 2113 1819 1496	44 47 55 67	2228 2078 1789 1484	45 48 56 67	2173 2019 1757 1459	46 50 57 69	2108 1970 1706 1430	47 51 59 70	2035 1904 1666 1402	49 53 60	1961 1840 1610 1363	51 54 62	1876 1768 1551 1330	53 57 64	1778 1677 1486 1262	56 60 67
											—		—		—		—
SD108D-45D Side Return (108,000)	HIGH* MED-H** MED-L LOW	2306 2135 1845 1543	43 47 54 65	2247 2103 1834 1521	45 50 57 69	2192 2050 1805 1502	46 51 58 70	2121 1995 1776 1477	47 53 59	2044 1935 1719 1452	49 54 61	1979 1858 1663 1412	51 57 63	1892 1778 1605 1368	53 59 66	1787 1690 1533 1314	56 62 69
									—		—		—		—		—
SD120D-45D Bottom Return (120,000)	HIGH* MED-H** MED-L LOW	2276 2113 1819 1496	49 53 61	2228 2078 1789 1484	50 53 62	2173 2019 1757 1459	51 55 63	2108 1970 1706 1430	53 56 65	2035 1904 1666 1402	55 58 67	1961 1840 1610 1363	57 60 69	1876 1768 1551 1330	59 63	1778 1677 1486 1262	62 66
															— —		— —
			—		—		—		—		—		—
SD120D-45D Side Return (120,000)	HIGH* MED-H** MED-L LOW	2306 2135 1845 1543	48 52 60	2247 2103 1834 1521	49 53 61	2192 2050 1805 1502	51 54 62	2121 1995 1776 1477	52 56 63	2044 1935 1719 1452	54 57 65	1979 1858 1663 1412	56 60 67	1892 1778 1605 1368	59 62 69	1787 1690 1533 1314	62 66
																	— —
			—		—		—		—		—		—		—

Table 1. Continued

BLOWER PERFORMANCE – KG7SM

MAXIMUM AIRFLOW & TEMPERATURE RISES (0 *F) FOR DOWNFLOW FURNACES (SM SERIES)**
Model Number & Heating Input (Btuh)	Motor Speed	External Static Pressure (Inches Water Column)
		0.1		0.2		0.3		0.4		0.5		0.6		0.7		0.8
		CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise	CFM	Rise
SM054D-24B Top Return (54,000)	HIGH* MED-H MED-L** LOW	1590 1228 1096 855	31 41 46 58	1563 1207 1079 825	32 41 46	1538 1193 1061 800	33 42 47	1513 1169 1038 777	33 43 48	1477 1157 1010 753	34 43 50	1430 1127 986 723	35 44 51	1370 1084 957 696	36 46 52	1312 1037 919 665	38 48 54
					—		—		—		—		—		—		—
SM072D-35C Top Return (72,000)	HIGH* MED-H** MED-L LOW	2235 2095 1871 1568	— —	2176 2052 1838 1552	— —	2121 2005 1797 1527	— —	2067 1957 1761 1485	— —	2010 1906 1716 1457	—	1936 1852 1667 1418	—	1864 1781 1602 1370	36 37 42 49	1783 1709 1536 1343	37 39 43 50
											35 39 46		36 40 47
			36 43		36 43		37 44		38 45
SM090D-35C Top Return (90,000)	HIGH* MED-H** MED-L LOW	2208 2065 1802 1490	38 40 46 56	2150 2015 1773 1482	39 41 47 56	2089 1970 1750 1464	40 42 48 57	2026 1910 1703 1436	41 44 49 58	1959 1866 1670 1407	43 45 50 59	1893 1805 1623 1380	44 46 51 60	1825 1737 1556 1329	46 48 54 63	1738 1668 1490 1271	48 50 56
																	—
SM118D-45D Top Return (118,000)	HIGH* MED-H** MED-L LOW	2358 2176 1873 1544	46 50 58	2299 2135 1852 1528	48 51 59	2253 2102 1816 1514	48 52 60	2191 2046 1790 1499	50 53 61	2130 1985 1750 1462	51 55 62	2060 1932 1699 1441	53 57 64	1990 1862 1643 1429	55 59 66	1903 1777 1571 1386	57 61 70
			—		—		—		—		—		—		—		—

NOTES:
* Factory Set Cooling Speed
** Factory Set Heating Speed
1. Two openings are recommended for airflows above 1,600 CFM if filter(s) is(are) adjacent to furnace
2. Temperature rises in the table are approximate. Actual temperature rises may vary.
3. Cells shaded in gray indicate a temperature rise outside of the recommended range.

Table 2. *SM Downflow Furnaces

VENTING
All models are approved for vertical non direct (1 pipe) and direct (2 pipe) venting applications. See Vent Table below for specified sizes and allowable lengths.

VENT TABLE

	SINGLE PIPE LENGTH (FT.) with 1 long radius elbow*		DIRECT VENT, DUEL PIPE LENGTH (ft.) WITH 1 long radius elbow on each pipe*
	OUTLET	OUTLET	INLET/OUTLET	INLET/OUTLET
MODELS	2”	3”	2”	3”
SD038	50	70	50	70
SD054	70	90	70	90
SD072	50	90	50	90
SD090	60	90	60	90
SD108	N/A	90	N/A	90
SD120	N/A	90	N/A	90

SM054	70	90	70	90
SM072	50	90	50	90
SM090	60	90	60	90
SM118	N/A	90	N/A	90

* NOTE:

Subtract 2.5 ft. for each additional 2″ elbow and 3.5 ft. for each additional 3″ elbow.
Two 45 degree elbows are equivalent to one 90 degree elbow.
One short radius elbow is equivalent to two long radius elbows.
Do not include termination elbows in calculation of vent length.
This table is applicable for elevations from sea level to 2000 ft. For higher elevations decrease vent pipe lengths by 8% per 1000 ft. of altitude.
Only the listed pipe materials are approved for use with KG7 Condensing Furnaces.

ACCESSORIES

KG7S (D, M) KITS
Description	SKU
2″ Concentric vent kit	904952
3″ Concentric vent kit	904953
“B”, “C”, “D” Cabinet downflow sub base kit	904911
2″ Side wall vent kit	904617
3″ Side wall vent kit	904347
U.S. LP Conversion kit (0 to 10,000 ft.)	905028
Canada LP Conversion kit (0 to 4,500 ft.)	905029
Bottom return filter 20 per box, “B” cabinet	904916
Bottom return filter 20 per box, “C” cabinet	904917
Bottom return filter 20 per box, “D” cabinet	904918
Side return filter kit	541036
Neutralizer kit	902377
“A” Cabinet fixed speed, high efficiency, FSHE	904872
“B” Cabinet fixed speed, high efficiency, FSHE	904873
“C” Cabinet fixed speed, high efficiency, FSHE	904874
“D” Cabinet fixed speed, high efficiency, FSHE	904875
“A” Cabinet variable speed, high efficiency, VSHE	904876
“B” Cabinet variable speed, high efficiency, VSHE	904877
“C” Cabinet variable speed, high efficiency, VSHE	904878
“D” Cabinet variable speed, high efficiency, VSHE	904879

GENERAL TERMS OF LIMITED WARRANTY
Nortek Global HVAC, LLC will furnish a replacement for any part of this product which fails in normal use and service within the terms and conditions of the warranty.
For complete details of the Limited Warranty, including applicable terms and conditions, see your local installer or contact the Nortek Global HVAC, LLC warranty department for a copy.
Before purchasing this appliance, read important energy cost and efficiency information available from your retailer. Specifications and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A (09/2016)

750D-0916 (Replaces 750D-0514)
GIBSON is a pending or registered trademark of Electrolux Home Products Inc. and used under a license from Electrolux Home Products, Inc. © Nortek Global HVAC, LLC. All Rights Reserved.
www.gibsonhvac.com

Documents / Resources

Gibson KG7S High Efficiency Single Stage Condensing Upflow Horizontal and Downflow Gas Furnace Models [pdf] User Manual
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References

User Manual