Thomas & Betts UDAP, UDAS dimensions High Altitude Capacity Changes

High Altitude Capacity Changes

The input and/or the capacity of the heater changes with the derate. The tables below list inputs and capacities at altitudes from sea level to 10,000 ft (3045M).

BTUH Inputs and Capacities by Altitude in the UNITED STATES for Model UDAP and Model UDAS

				Normal	Thermal		Minimum	Normal				Thermal				Minimum				Normal			Thermal		Minimum			Normal		Thermal		Minimum
ALTITUDE					Output							Output											Output							Output
				Input			Input	Input								Input				Input					Input			Input				Input
					Capacity							Capacity											Capacity							Capacity
Feet		Meters			Size 30							Size 45											Size 60							Size 75
0-2000		0-610		30000	24600		30000	45000				37350				45000			60000				49800		42000			75000		62250		52500
2001-3000		611-915		28200	23124		28200	42300				35109				42300			56400				46812		39480			70500		58515		49350
3001-4000		916-1220		27600	22632		27600	41400				34362				41400			55200				45816		38640			69000		57270		48300
4001-5000		1221-1525		27000	22140		27000	40500				33615				40500			54000				44820		37800			67500		56025		47250
5001-6000		1526-1830		26400	21648		26400	39600				32868				39600			52800				43824		36960			66000		54780		46200
6001-7000		1831-2135		25800	21156		25800	38700				32121				38700			51600				42828		36120			64500		53535		45150
7001-8000		2136-2440		25200	20664		25200	37800				31374				37800			50400				41832		35280			63000		52290		44100
8001-9000		2441-2745		24600	20172		24600	36900				30627				36900			49200				40836		34440			61500		51045		43050
9001-10000		2746-3045		24000	19680		24000	36000				29880				36000			48000				39840		33600			60000		49800		42000
Feet		Meters			Size 100							Size 125											Size 150							Size 175
0-2000		0-610		105000	88200		73500	120000				100800				84000			150000				124500		105000			175000		145250		122500
2001-3000		611-915		98700	82908		69090	112800				94752				78960			141000				117030		98700			164500		136535		115150
3001-4000		916-1220		96600	81144		67620	110400				92736				77280			138000				114540		96600			161000		133630		112700
4001-5000		1221-1525		94500	79380		66150	108000				90720				75600			135000				112050		94500			157500		130725		110250
5001-6000		1526-1830		92400	77616		64680	105600				88704				73920			132000				109560		92400			154000		127820		107800
6001-7000		1831-2135		90300	75852		63210	103200				86688				72240			129000				107070		90300			150500		124915		105350
7001-8000		2136-2440		88200	74088		61740	100800				84672				70560			126000				104580		88200			147000		122010		102900
8001-9000		2441-2745		86100	72324		60270	98400				82656				68880			123000				102090		86100			143500		119105		100450
9001-10000		2746-3045		84000	70560		58800	96000				80640				67200			120000				99600		84000			140000		116200		98000
Feet		Meters			Size 200							Size 225											Size 250							Size 300
0-2000		0-610		200000	166000		140000	225000				186750				157500			250000				207500		175000			300000		249000		210000
2001-3000		611-915		188000	156040		131600	211500				175545				148050			235000				195050		164500			282000		234060		197400
3001-4000		916-1220		184000	152720		128800	207000				171810				144900			230000				190900		161000			276000		229080		193200
4001-5000		1221-1525		180000	149400		126000	202500				168075				141750			225000				186750		157500			270000		224100		189000
5001-6000		1526-1830		176000	146080		123200	198000				164340				138600			220000				182600		154000			264000		219120		184800
6001-7000		1831-2135		172000	142760		120400	193500				160605				135450			215000				178450		150500			258000		214140		180600
7001-8000		2136-2440		168000	139440		117600	189000				156870				132300			210000				174300		147000			252000		209160		176400
8001-9000		2441-2745		164000	136120		114800	184500				153135				129150			205000				170150		143500			246000		204180		172200
9001-10000		2746-3045		160000	132800		112000	180000				149400				126000			200000				166000		140000			240000		199200		168000
Feet		Meters			Size 350							Size 400
0-2000		0-610		350000	290500		245000	400000				332000				280000
2001-3000		611-915		329000	273070		230300	376000				312080				263200
3001-4000		916-1220		322000	267260		225400	368000				305440				257600
4001-5000		1221-1525		315000	261450		220500	360000				298800				252000
5001-6000		1526-1830		308000	255640		215600	352000				292160				246400
6001-7000		1831-2135		301000	249830		210700	344000				285520				240800
7001-8000		2136-2440		294000	244020		205800	336000				278880				235200
8001-9000		2441-2745		287000	238210		200900	328000				272240				229600
9001-10000		2746-3045		280000	232400		196000	320000				265600				224000
				BTUH Inputs and Capacities by Altitude in CANADA for Models UDAP and UDAS
				Normal	Thermal	Minimum		Normal			Thermal		Minimum					Normal				Thermal		Minimum			Normal		Thermal		Minimum
ALTITUDE					Output						Output											Output							Output
				Input			Input	Input								Input			Input					Input			Input				Input
					Capacity					Capacity												Capacity							Capacity
Feet		Meters			Size 30						Size 45											Size 60							Size 75
0-2000		0-610		30000	24600		30000	45000			37350				45000			60000				49800		42000			75000		62250		52500
2001-4500	611-1373		27000		22140		27000	40500			33615				40500			54000				44820		37800			67500		56025		47250
Feet		Meters			Size 100					Size 125												Size 150							Size 175
0-2000		0-610		105000	88200		73500	120000		100800					84000			150000				124500		105000			175000		145250		122500
2001-4500	611-1373		94500		79380		66150	108000			90720				75600			135000				113400		94500			157500		132300		110250
Feet		Meters			Size 200					Size 225												Size 250							Size 300
0-2000		0-610		200000	166000		140000	225000	186750				157500				250000				207500			175000		300000			249000		210000
2001-4500	611-1373		180000		151200		126000	202500		170100				141750				225000				189000		157500			270000		226800		189000
Feet		Meters			Size 350					Size 400
0-2000		0-610		350000	290500		245000	400000		332000				280000
2001-4500		611-1373		315000	264600		220500	360000		302400				252000

Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 15