Nordyne T3BN Procedure for Charging 10-TON Heat Pump in Heating Mode, Outdoor Temperature DEG. F

12
	7.5 Ton										OUTDOOR TEMPERATURE (DEG. F)
			0			10			20			30			40				50			60
	Suc.	Liquid		Disch.	Suc.	Liquid	Disch.	Suc.	Liquid	Disch.	Suc.	Liquid	Disch.	Suc.	Liquid	Disch.		Suc.	Liquid	Disch.	Suc.	Liquid	Disch.
	Press		Press.	Temp.	Press.	Press.	Temp.	Press.	Press.	Temp.	Press.	Press.	Temp.	Press.	Press.	Temp.		Press.	Press.	Temp.	Press.	Press.	Temp.
	19		134	135	20	140	135	21	146	136	22	152	136	32	162		157	51	199	198	61	248	179
	20		141	133	21	146	133	22	151	134	23	156	134	33	169		154	52	206	193	62	255	185
	21		148	131	22	152	131	23	156	132	24	160	132	34	176		151	53	213	189	63	262	191
	22		155	129	23	158	129	24	160	130	25	163	130	35	183		148	54	220	184	64	269	198
	23		162	127	24	163	127	25	165	128	26	167	128	36	190		146	55	227	180	65	276	204
	24		169	125	25	169	125	26	170	126	27	171	126	37	197		143	56	234	175	66	283	210
	25		176	123	26	175	123	27	175	124	28	174	124	38	204		140	57	241	171	67	290	216

*Note: All pressures are listed in psig. and all temperatures in deg. F.

-Shaded Boxes indicate flooded conditions

-Rated Design Values. Suction Pressure will be lower than design value if indoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design.

-Discharge temperatures greater than charted values indicates a refrigerant undercharge.

REFRIGERANT CHARGING CHART Heating Mode of Operation

PROCEDURE FOR CHARGING 10-TON HEAT PUMP IN HEATING MODE.

1.Evacuate the refrigerant system.

2.Charge the system by weighing in 30 lbs R-22 refrigerant. This is the recommended charge for 5/8 inch 15 foot line set.

For line sets other than 15 feet add 9.0 oz. R-22 per additional 5 feet of 5/8 inch liquid line over 15 feet and remove 9.0 oz per 5 feet less than 15 feet of liquid line.

3.Ensure that the unit is operating properly per the heating functional checkout in these installation instructions.