Thermo Products CMA2-75N, CMA1-50N service manual Speed Tap, Static, Pressure

All installations and services must be performed by qualified service personnel.

CMA1-50

ALTERATIONS REQ’D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE

	COOLING UNIT				HTG Speed					Recommended CLG Speed
24,000					LOW						MED-LOW
	30,000					LOW						MED-HIGH
	36,000					LOW								HIGH
Speed Tap \			Furnace Airflow (CFM) vs. External Static pressure (in. WC.)
Static
Pressure		0.1			0.2			0.3		0.4			0.5		0.6	0.7
Low		836			805			773		743			695		620	566
ML		1044			1010			972		914			860		826	752
MH		1250			1196			1146		1101			1038		977	902
High		1339			1338			1283		1233			1162		1086	1008
Speed Tap \				Temperature Rise vs. External Static Pressure (in. WC.)
Static
Pressure			0.1		0.2			0.3			0.4			0.5	0.6	0.7
Low			53		55			57			59			63	71	78
ML			42		44			45			48			51	53	59
MH			35		37			38			40			42	45	49
High			31		33			34			36			38	41	44
Speed Tap \			Blower Motor Current Draw (Amps) vs. External Static pressure (in. WC.)
Static
		0.1			0.2		0.3		0.4			0.5			0.6	0.7
Pressure
Low		3.3			3.2		3.1		3.0			2.9			2.7	2.6
ML		4.0			3.8		3.6		3.5			3.4			3.2	3.1
MH		4.6			4.4		4.2		4.1			4.0			3.8	3.6
High		5.3			5.1		5.0		4.9			4.7			4.6	4.4
Speed Tap \			Blower Motor Watts vs. External Static pressure (in. WC.)
Static
Pressure			0.1		0.2			0.3			0.4			0.5	0.6	0.7
Low			315		311			304			300			292	281	275
ML			400		390			376			363			351	342	330
MH			485		467			452			441			427	412	394
High			573		555			544			530			513	493	477

= Recommended operation range

30