Carrier RVC 50RHR,RVR Coaxial Water Pressure Drop, 50RHS,RVS,RDS Coaxial Water Pressure Drop

Table 22 — 50RHR,RVR Coaxial

Water Pressure Drop

UNIT			WATER TEMPERATURE (F)
	GPM	30 F		50 F	70 F	90 F
50RHR,RVR
				Pressure Drop (psi)
006*	0.8	0.8		0.8	0.7	0.7
	1.1	1.2		1.1	1.0	1.0
	1.5	2.0		1.9	1.8	1.7
009	1.1	1.2		1.1	1.0	0.9
	1.7	1.7		1.6	1.5	1.4
	2.2	3.5		3.2	3.0	2.8
012	1.5	2.8		2.6	2.4	2.3
	2.3	6.0		5.6	5.2	4.9
	3.0	9.6		9.0	8.3	7.9
015	1.8	2.5		2.3	2.1	2.0
	2.6	4.8		4.5	4.1	3.9
	3.5	8.1		7.6	7.0	6.6
019	2.3	1.9		1.7	1.6	1.5
	3.4	3.4		3.1	2.9	2.7
	4.5	6.6		6.2	5.7	5.4
024	3.0	2.0		1.9	1.7	1.6
	4.5	4.2		3.9	3.6	3.4
	6.0	7.0		6.5	6.0	5.7
030	3.8	1.4		1.3	1.2	1.2
	5.5	2.4		2.3	2.1	2.0
	7.5	3.9		3.7	3.4	3.2
036	4.5	1.1		1.1	1.0	0.9
	6.8	2.1		2.0	1.9	1.8
	9.0	3.5		3.3	3.0	2.9
042	5.3	1.4		1.3	1.2	1.2
	7.9	2.9		2.7	2.5	2.3
	10.5	4.6		4.2	3.9	3.7
048	6.0	2.1		1.9	1.8	1.7
	9.0	3.9		3.7	3.4	3.2
	12.0	6.4		5.9	5.5	5.2
060	7.5	2.9		2.7	2.5	2.4
	11.3	5.7		5.3	4.9	4.7
	15.0	9.4		8.7	8.1	7.7

*Size 006 available in 50RHR unit only.

Table 23 — 50RHS,RVS,RDS Coaxial

Water Pressure Drop

UNIT		WATER TEMPERATURE (F)
	GPM	30 F	50 F	70 F	90 F
50RHS,RVS,RDS
			Pressure Drop (psi)
015	1.8	0.6	0.5	0.5	0.5
	2.8	1.0	0.9	0.8	0.8
	3.8	1.5	1.4	1.3	1.2
018	2.2	0.7	0.7	0.6	0.6
	3.5	1.3	1.2	1.1	1.1
	4.5	1.8	1.8	1.6	1.5
024	3.0	0.6	0.6	0.5	0.5
	4.5	1.1	1.1	1.0	0.9
	6.0	1.8	1.7	1.5	1.5
030	3.7	0.8	0.8	0.7	0.7
	5.5	1.6	1.4	1.3	1.3
	7.5	2.6	2.4	2.2	2.1
036	4.5	1.3	1.2	1.1	1.1
	7.0	2.1	1.9	1.8	1.7
	9.0	3.9	3.7	3.4	3.2
042	5.2	1.6	1.5	1.4	1.3
	8.0	3.2	3.0	2.8	2.6
	10.5	5.1	4.7	4.4	4.1
048	6.0	2.1	1.9	1.8	1.7
	9.0	3.9	3.7	3.4	3.2
	12.0	6.4	5.9	5.5	5.2
060	7.5	1.1	1.0	1.0	0.9
	11.3	2.2	2.1	1.9	1.8
	15.0	3.6	3.4	3.1	3.0
070	9.0	1.5	1.4	1.3	1.2
	13.5	3.0	2.8	2.6	2.5
	18.0	5.0	4.7	4.3	4.1

Table 24 — 50RHC,RVC Coaxial

Water Pressure Drop

UNIT			WATER TEMPERATURE (F)
	GPM	60 F		70 F	80 F	90 F
50RHC,RVC
				Pressure Drop (psi)
	0.9	0.7		0.7	0.7	0.6
006*	1.1	1.2		1.2	1.2	1.1
	1.7	1.9		1.9	1.8	1.8
	2.0	2.9		2.8	2.7	2.6
	1.1	2.4		2.3	2.3	2.2
009	1.7	3.1		3.0	2.9	2.8
	2.3	4.0		3.9	3.8	3.7
	3.0	5.4		5.3	5.1	4.9
	1.5	2.3		2.2	2.1	2.1
012	2.3	4.4		4.3	4.2	4.0
	3.0	6.4		6.2	6.0	5.8
	4.0	13.3		12.9	12.6	12.2
	2.3	2.0		2.0	1.9	1.8
018	3.5	3.1		3.0	2.9	2.8
	4.5	4.2		4.1	3.9	3.8
	6.0	5.9		5.7	5.6	5.4
	3.0	2.0		1.9	1.8	1.8
024	4.5	3.9		3.7	3.6	3.5
	6.0	6.4		6.2	6.0	5.8
	8.0	10.6		10.3	10.0	9.7
	3.8	1.5		1.5	1.4	1.4
030	5.5	2.7		2.6	2.5	2.4
	7.5	4.3		4.2	4.1	3.9
	10.0	6.9		6.7	6.5	6.3
	4.5	1.7		1.7	1.6	1.6
036	6.8	3.2		3.1	3.0	2.9
	9.0	5.0		4.9	4.8	4.6
	12.0	8.2		7.9	7.7	7.5
	5.3	0.9		0.9	0.9	0.9
041†	7.9	2.2		2.1	2.1	2.0
	10.5	4.0		3.9	3.8	3.6
	13.0	6.2		6.0	5.8	5.7
	5.3	1.0		1.0	1.0	0.9
042	8.0	2.6		2.6	2.5	2.4
	11.0	5.3		5.1	4.9	4.8
	14.0	8.7		8.5	8.2	8.0
	6.0	1.2		1.2	1.2	1.1
048	9.0	2.9		2.8	2.7	2.6
	12.0	5.3		5.1	4.9	4.8
	16.0	9.5		9.2	8.9	8.6
	7.5	4.4		4.2	4.1	4.0
060	11.3	7.6		7.3	7.1	6.9
	15.0	11.4		11.1	10.8	10.4
	20.0	17.6		17.1	16.6	16.1

*Size 006 available in 50RHC unit only. †Size 041 available in 50RVC unit only.

Antifreeze — In areas where entering loop temperatures drop below 40 F or where piping will be routed through areas subject to freezing, antifreeze is needed.

Alcohols and glycols are commonly used as antifreeze agents. Freeze protection should be maintained to 15 F below the lowest expected entering loop temperature. For example, if the lowest expected entering loop temperature is 30 F, the leav- ing loop temperature would be 22 to 25 F. Therefore, the freeze protection should be at 15 F (30 F – 15 F = 15 F).

IMPORTANT: All alcohols should be pre-mixed and pumped from a reservoir outside of the building or introduced under water level to prevent fuming.

Calculate the total volume of fluid in the piping system. See Table 25. Use the percentage by volume in Table 26 to deter- mine the amount of antifreeze to use. Antifreeze concentration should be checked from a well mixed sample using a hydrome- ter to measure specific gravity.

FREEZE PROTECTION SELECTION — The 30 F FP1 factory setting (water) should be used to avoid freeze damage to the unit.

Once antifreeze is selected, the JW3 jumper (FP1) should be clipped on the control to select the low temperature (anti- freeze 13 F) set point to avoid nuisance faults.

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