Raypak 1334001 operating instructions Piping-DomesticHot Water Supply Heaters

								WATER HARDNESS
MODELS				SOFT					MEDIUM					HARD
			0-4 Grains Per Gallon					5-15 Grains Per Gallon					16-25 Grains Per Gallon*
Indoor	Outdoor	T	GPM	P	MPS	SHL	T	GPM	P	MPS	SHL	T	GPM	P	MPS	SHL
0133	0133	22	10	3.4	1-1/4	5.1	17	13	5.5	1-1/4	8.2	10	22	14.7	1-1/4	22.0
0182/0181	0182	15	20	1.8	1-1/2	4.6	12	26	3.1	1-1/2	7.5	7	45	9.2	1-1/2	20.8
0260/0261	0260	21	20	1.9	1-1/2	4.6	17	26	3.1	1-1/2	7.6	10	45	9.4	1-1/2	21.0
0330/0331	0330	27	20	1.9	1-1/2	4.7	21	26	3.2	1-1/2	7.7	12	45	9.6	1-1/2	21.2
0400/0401	0400	30	22	2.3	1-1/2	5.6	25	26	3.3	1-1/2	7.8	15	45	9.8	1-1/2	21.3
0514	0514	20	42	2.0	2	4.8	16	52	3.0	2	7.1	9	90	9.0	2	19.1
0624	0624	25	41	2.0	2	4.7	19	54	3.4	2	7.9	11	90	9.5	2	20.9
0724	0724	29	41	2.1	2	4.9	20	60	4.4	2	9.8	13	90	10.0	2	21.4
0824	0824	30	45	2.6	2	5.9	20	68	6.0	2	12.8	15	90	10.5	2	21.9
0962	0926	30	53	3.8	2-1/2	5.3	20	79	8.5	2-1/2	11.5	18	90	11.0	2-1/2	15.2
1125	1083	30	61	5.5	2-1/2	7.5	20	90	12.0	2-1/2	16.2	20	90	12.0	2-1/2	16.2
1223	1178	30	67	7.0	2-1/2	9.3	22	90	12.5	2-1/2	16.7	22	90	12.5	2-1/2	16.7
1336	1287	30	73	8.7	2-1/2	11.5	24	90	13.3	2-1/2	17.5	24	90	13.3	2-1/2	17.5
1468	1414	30	80	11.0	2-1/2	14.4	27	90	14.0	2-1/2	18.2	27	90	14.0	2-1/2	18.2
1631	1571	30	90	14.8	2-1/2	19.0	30	90	14.8	2-1/2	19.0	30	90	14.8	2-1/2	19.0
1826	1758	33	90	15.4	2-1/2	19.6	33	90	15.4	2-1/2	19.6	33	90	15.4	2-1/2	19.6
2100	N/A	30	115	5.0	3	7.9	20	172	11.0	3	17.2	17	200	14.8	3	22.9
2500	N/A	30	137	7.5	3	11.4	20	200	15.8	3	23.9	20	200	15.8	3	23.9
3001	N/A	30	164	11.2	3	17.0	25	200	16.7	3	24.8	25	200	16.7	3	24.8
3500	N/A	30	191	16.2	3	23.7	29	200	17.5	3	25.6	29	200	17.5	3	25.6
4001	N/A	33	200	18.7	3	26.8	33	200	18.7	3	26.8	33	200	18.7	3	26.8

BOLD TYPE indicates Low NOx models.

ΔT = Temperature Rise, Degree F@GPM FLOW GPM = Gallons per Minute Flow

ΔP = Pressure Drop, Foot thru Heat Exchanger MPS = Minimum Pipe Size, NPT

SHL = System Head Loss

*Must utilize optional cupro-nickel tubes. If over 25 grains per gallon, a water softener/treatment system must be utilized.

Table I: General Specifications Uni-Temp 80 Hot Water Supply Systems

Piping—Domestic Hot Water Supply Heaters

Table I above provides data for selecting in-line pumps for use in a Uni-Temp 80 system for a single heater and tank according to the following:

1.Flow rates are based on water hardness as meas- ured in grains per gallon.

Soft: 0-4 grains per gallon.

Medium: 5-15 grains per gallon.

Hard: 16-25 grains per gallon.

2.Maximum Flow Rates:

0133	22 GPM
0181-0401	45 GPM
0514-1826	90 GPM
2100-4001	200 GPM

3.Pressure drop values (ΔP and SHL) and minimum pipe sizes are for two-pass heaters.

4.Sizing based on heater and tank being placed 5 feet apart. The equivalent length of pipe, valves and fittings in the system is as follows:

1-1/2" NPT = 70 Ft (0181-0401)

2" NPT = 75 Ft (0514-0824)

2-1/2" NPT = 80 Ft (0926-1826)

3" NPT = 85 Ft (2100-4001)

Additional pipe fittings will increase the system head loss.

5.Select a pump based on the water hardness, flow, and system head loss.

6.If heater is more than two stories above the tank, consult the factory.

NOTE: GPM flow rates are limited by maximum acceptable velocity through heat exchanger tubes. Heater models 0514 through 1826 may be provided with an integral rear-mounted pump. This must be specified at time of order.

MINIMUM INPUT ADJUSTMENT: Model Types WH have minimum input ratings as specified on their indi- vidual rating plates. Minimum input controllers have been pre-set at the factory. Consult with factory repre- sentatives if a minimum input problem should occur.

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