Fahrenheit
Temperature scale, 32°F being the freezing point and 212 °F being the boiling point of water.

Degrees Fahrenheit = (1.8 x °Centigrade) + 32

CENT.	FAHR.		CENT.	FAHR.		CENT.	FAHR.		CENT.	FAHR.		CENT.	FAHR.
-50	-58		50	122		150	302		250	482		350	662
-45	-49		55	131		155	311		255	491		355	671
-40	-40		60	140		160	320		260	500		360	680
-35	-31		65	149		165	329		265	509		365	689
-30	-22		70	158		170	338		270	518		370	698
-25	-13		75	167		175	347		275	527		375	707
-20	-4		80	176		180	356		280	536		380	716
-15	5		85	185		185	365		285	545		385	725
-10	14		90	194		190	374		290	554		390	734
-5	23		95	203		195	383		295	563		395	743
0	32		100	212		200	392		300	572		400	752
5	41		105	221		205	401		305	581		405	761
10	50		110	230		210	410		310	590		410	770
15	59		115	239		215	419		315	599		415	779
20	68		120	248		220	428		320	608		420	788
25	77		125	257		225	437		325	617		425	797
30	86		130	266		230	446		330	626		430	806
35	95		135	275		235	455		335	635		435	815
40	104		140	284		240	464		340	644		440	824
45	113		145	293		245	473		345	653		445	833

Field Coil
A coil of insulated wire wrapped around an iron core. When electric current flows through the coil, a magnetic field is produced. Used in motors in conjunction with an armature.

Gas Orifice Capacity Chart (BTU Ratings)

Please click here for chart.

Glow Coil
A coil of fine wire which when heated by an electrical current glows and is used to light a pilot flame.

GPH (Gallons Per Hour)
The measurement of the flow of a volume of liquid. To convert GPH to GPM divide by 60.

GPM
Gallons Per Minute

Hot Surface Ignition
A resistive element is used to heat and ignite a gas burner.

Hp (horsepower)
One horsepower = 2544 B.T.U. per HR.
One horsepower = 745.2 watts

Horsepower to Kilowatt Chart

Horsepower	=	KW
3		3
5		5
7.5		7
10		9.5
15		12.5
20		15.5
25		18

HZ (Hertz)
Frequency of ac power in cycles per second. Usually 60 HZ in USA and 50 HZ overseas.

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