Carrier 30RAP010-060 Tank Baffling, Maximum Loop Volume Limits, Badgood Badgood

325

9

300

7 8

Water Pressure Drop (Kpa)

275

250

225

200

175

150

125

10

11 & 12

100

75

50

25

0

0	5	10	15	20	25
			Liters/second	LEGEND
				7 — 30RAP035	10 — 30RAP050
				8 — 30RAP040	11 — 30RAP055
				9 — 30RAP045	12 — 30RAP060

Fig. 17B — Heat Exchanger Pressure Drop — 30RAP035-060 (SI)

BADGOOD

BADGOOD

Fig. 18 — Tank Baffling

Table 7 — Maximum Loop Volume Limits

CONCENTRATION	30RAP010-030		30RAP035-060
	GAL	L	GAL	L
PURE WATER	310	1173	725	2744
10% EG	180	681	425	1609
20% EG	175	662	410	1552
30% EG	155	587	370	1401
40% EG	150	568	350	1325
10% PG	175	662	410	1552
20% PG	150	568	350	1325
30% PG	128	485	300	1136
40% PG	118	447	275	1041
LEGEND

EG — Ethlyene Glycol

PG — Propylene Glycol

NOTE: Max loop volume is based on typical system of 12 psig and 30 psig of min/max pressures, and 100 F mean temperature. If the volume in the system is greater than the limits listed, then extra expansion tank volume must be added to the system.

Table 6 — Minimum Fluid Volume In Circulation
		NORMAL AIR			PROCESS COOLING OR
						LOW AMBIENT
30RAP		CONDITIONING
						OPERATION
UNIT		APPLICATION
					APPLICATION gal/ton
SIZE		gal/ton (L per kW)
						(L per kW)
	Std Unit		HGBP	Digital	Std Unit		HGBP	Digital
010,015	12	(13.0)	N/A	3 (3.3)	12	(13.0)	N/A	3 (3.3)
018-030	6	(6.5)	4 (4.3)	3 (3.3)	10	(10.8)	7 (7.6)	3 (3.3)
035-060	3	(3.3)	3 (3.3)	3 (3.3)	6	(6.5)	5 (5.4)	3 (3.3)

LEGEND

HGBP — Hot Gas Bypass

Pump Modification/Trimming (Units with Factory-Installed Hydronic Package) — Since the pumps are constant speed,

the only way to obtain greater flow with a given pump/impeller is to decrease system head. This will allow the pump to “ride” its curve to the right, resulting in increased flow. If greater flow is necessary, look at opening the balance valve. Also, verify that the strainer is clean, and that no unnecessary system resis- tance is present, such as partially closed isolation valves.

Increasing system resistance by closing the balancing valve will force the pump to “ride” its curve to the left, resulting in less flow. Although this does reduce power consumption slightly, it may not be the desirable method of reducing the flow, especially if a rather large reduction is needed.

19