Danfoss RSA Oil Pump Installation Guide

Brand: Danfoss

Product Type: Oil Pump

Introduction

This document provides installation guidance for the Danfoss RSA series oil pumps. It includes technical specifications, performance data, connection details, and operational instructions. The RSA pump is designed for fuel oil applications.

Diagrams and Components

The guide features several diagrams illustrating the pump's construction and installation points:

Fig. 1: Shows the pump connections: P (nozzle connection), S (suction line), F (feed pressure measurement), R (return line), and M (pressure measurement/bleed).
Fig. 2: Illustrates the venting procedure via port M for 1-pipe systems.
Fig. 3: Depicts the pressure setting mechanism of the RSA pump.
Fig. 4: Shows a 1-pipe system configuration with the bypass "G" open.
Fig. 5: Shows a 2-pipe system configuration with screw "A" fitted in the bypass "G".
Fig. 6: Provides exploded views of the RSA 95/125 and RSA 28/40/60 models, detailing internal components.

Performance Data: Nozzle Capacity

The following tables provide nozzle capacity data based on pressure differential (∆p) and suction height (H) for various RSA pump models. Data is presented for multiple languages, with English (GB) detailed below.

Nozzle Capacity vs. Pressure Differential (∆p > 0 bar)

H (m)	GB (Ø4 mm, Ø5 mm, Ø6 mm)			DE (Ø4 mm, Ø5 mm, Ø6 mm)			FR (Ø5 mm, Ø6 mm, Ø8 mm)			SE (Ø6 mm, Ø8 mm, Ø10 mm)
4.0	51	100	100	26	62	100	31	65	100	31	99	100
3.5	45	100	100	22	55	100	27	57	100	27	87	100
3.0	38	94	100	19	47	97	23	49	100	23	74	100
2.5	32	78	100	16	39	81	20	40	100	20	62	100
2.0	26	62	100	13	31	65	16	32	100	16	49	100
1.5	19	47	97	10	23	49	12	24	77	12	37	91
1.0	13	31	65	6	16	32	8	16	51	8	25	60
0.5	6	16	32	3	8	16	4	8	26	4	12	30
* 2.5 kg/h, 5.0 kg/h, 10.0 kg/h, 20.0 kg/h

Nozzle Capacity vs. Pressure Differential (∆p > 0.35 bar)

H (m)	GB (Ø4 mm, Ø5 mm, Ø6 mm)			DE (Ø4 mm, Ø5 mm, Ø6 mm)			FR (Ø5 mm, Ø6 mm, Ø8 mm)			SE (Ø6 mm, Ø8 mm, Ø10 mm)
4.0	100	100	100	51	100	100	62	100	100	65	100	100
3.5	95	100	100	48	100	100	58	100	100	61	100	100
3.0	89	100	100	45	100	100	54	100	100	57	100	100
2.5	83	100	100	41	100	100	51	100	100	53	100	100
2.0	77	100	100	38	94	100	47	97	100	49	100	100
1.5	71	100	100	35	86	100	43	89	100	45	100	100
1.0	64	100	100	32	79	100	39	81	100	41	100	100
0.5	58	100	100	29	71	100	35	73	100	37	100	100
* 2.5 kg/h, 5.0 kg/h, 10.0 kg/h, 20.0 kg/h

Nozzle Capacity vs. Pressure Differential (Negative H values)

H (m)	GB (Ø4 mm, Ø5 mm, Ø6 mm)			DE (Ø4 mm, Ø5 mm, Ø6 mm)			FR (Ø5 mm, Ø6 mm, Ø8 mm)			SE (Ø6 mm, Ø8 mm, Ø10 mm)
0.0	52	100	100	26	63	100	32	66	100	33	100	100
-0.5	46	100	100	23	56	100	28	58	100	29	93	100
-1.0	40	97	100	20	48	100	24	50	100	25	80	100
-1.5	33	81	100	17	41	84	20	42	100	22	68	100
-2.0	27	66	100	14	33	69	17	34	100	18	56	100
-2.5	21	51	100	10	26	53	13	27	84	14	43	100
-3.0	15	36	75	7	18	37	9	19	59	10	31	75
-3.5	9	21	44	4	11	22	5	11	35	6	19	45
-4.0	2	6	12	1	3	6	1	3	10	2	6	15
* 2.5 kg/h, 5.0 kg/h, 10.0 kg/h, 20.0 kg/h

Performance Data for RSA 40, 60, 95, 125 at 1400 min⁻¹

H (m)	RSA 40 (Ø6 mm, Ø8 mm, Ø10 mm, Ø12 mm)				RSA 60 (Ø6 mm, Ø8 mm, Ø10 mm, Ø12 mm)				RSA 95 (Ø8 mm, Ø10 mm, Ø12 mm, Ø15 mm)				RSA 125 (Ø8 mm, Ø10 mm, Ø12 mm, Ø15 mm)
4.0	34	100	100	100	23	71	100	100	44	100	100	100	33	81	100	100
3.5	32	100	100	100	21	67	100	100	41	100	100	100	31	76	100	100
3.0	30	94	100	100	20	62	100	100	38	93	100	100	29	71	100	100
2.5	28	85	100	100	18	58	100	100	36	87	100	100	27	66	100	100
2.0	26	81	100	100	17	54	100	100	33	80	100	100	25	61	100	100
1.5	24	75	100	100	16	49	100	100	30	74	100	100	23	56	100	100
1.0	22	68	100	100	14	45	100	100	28	67	100	100	21	51	100	100
0.5	19	62	100	100	13	41	99	100	25	61	100	100	19	46	96	100
0.0	17	55	100	100	12	36	89	100	22	54	100	100	17	41	86	100
-0.5	15	48	100	100	10	32	78	100	20	48	99	100	15	36	76	100
-1.0	13	42	100	100	9	28	68	100	17	41	86	100	13	32	65	100
-1.5	11	35	86	100	7	23	57	100	14	35	73	100	11	27	55	100
-2.0	9	29	70	100	6	19	47	96	12	29	59	100	9	22	45	100
-2.5	7	22	54	100	5	15	36	75	9	22	46	100	7	17	35	85
-3.0	5	16	38	79	3	10	25	53	6	16	32	79	5	12	24	60
-3.5	3	9	22	46	2	6	15	31	4	9	19	46	3	7	14	35
-4.0	1	3	6	13	1	2	4	9	1	3	5	13	1	2	4	10

Performance Data for RSA 28, 40, 60, 95, 125 at 2800 min⁻¹

H (m)	RSA 28 (Ø6 mm, Ø8 mm, Ø10 mm, Ø12 mm)				RSA 40 (Ø6 mm, Ø8 mm, Ø10 mm, Ø12 mm)				RSA 60 (Ø6 mm, Ø8 mm, Ø10 mm, Ø12 mm)				RSA 95 (Ø8 mm, Ø10 mm, Ø12 mm, Ø15 mm)				RSA 125 (Ø10 mm, Ø12 mm, Ø15 mm, Ø20 mm)
4.0	23	73	100	100	16	51	100	100	11	34	83	100	21	51	100	100	39	81	100	100
3.5	22	69	100	100	15	48	100	100	10	32	78	100	20	48	99	100	36	76	100	100
3.0	20	64	100	100	14	45	100	100	9	30	73	100	18	45	93	100	34	71	100	100
2.5	19	60	100	100	13	42	100	100	9	28	68	100	17	42	86	100	32	66	100	100
2.0	18	55	100	100	12	39	95	100	8	26	63	100	16	38	80	100	29	61	100	100
1.5	16	51	100	100	11	36	87	100	7	24	58	100	14	35	73	100	27	56	100	100
1.0	15	46	100	100	10	33	80	100	7	22	53	100	13	32	67	100	25	51	100	100
0.5	13	42	100	100	9	29	72	100	6	20	48	99	12	29	60	100	22	46	100	100
0.0	12	38	92	100	8	26	64	100	6	17	43	88	11	26	54	100	20	41	100	100
-0.5	10	33	81	100	7	23	57	100	5	15	37	78	9	23	48	100	18	36	89	100
-1.0	9	29	70	100	6	20	49	100	4	13	32	67	8	20	41	100	15	31	77	100
-1.5	8	24	59	100	5	17	41	86	4	11	27	57	7	17	35	85	13	26	65	100
-2.0	6	20	46	99	4	14	34	70	3	9	22	46	6	14	28	69	10	22	53	100
-2.5	5	15	37	77	3	11	26	54	2	7	17	36	4	11	22	53	8	17	41	100
-3.0	3	11	26	54	2	8	18	38	2	5	12	25	3	7	15	38	6	12	29	91
-3.5	2	6	15	32	1	4	11	22	1	3	7	15	2	4	9	22	3	7	17	53
-4.0	1	3	6	13	1	2	4	9	1	3	5	13	1	2	4	10	1	2	5	13

Technical Data and Specifications

The RSA oil pump is specified for operation with standard fuel oils and bio oils (FAME). Key technical data includes:

Oil Types: Standard fuel gas oil and bio oil (FAME)
Viscosity Range: 1.3 - 1.8 mm²/s (cSt)
Speed: RSA 28: 2400 - 3600 min⁻¹; RSA 40/60/95/125: 1400 - 3600 min⁻¹
Pressure Range: Varies by model and viscosity, typically 5.5 - 12 bar (RSA 28), 5.5 - 15 bar (RSA 40/60/95/125), and 5.5 - 21 bar (RSA 40/60/95/125 with viscosity > 1.8 mm²/s).
Default Settings: RSA 28: 7 bar; RSA 40/60/95/125: 10 bar
Medium Temperature: -10 to +70 °C
Max. Feed and Return Pressure: 4 bar

Connections (Fig. 1)

P = Nozzle connection: G ¹⁄₁₆ for RSA 28/40/60/95, G ¹⁄₁₄ for RSA 125.
S = Suction line: G ¹⁄₁₄
F = Feed pressure measurement: G ¹⁄₁₄
R = Return line: G ¹⁄₁₄
M = Pressure measurement/bleed: G ¹⁄₁₈

All connection surfaces are prepared for standard flat gaskets.

Installation and Operation Notes

Note on 2-pipe systems: Starting a 2-pipe pump with a blocked return line can cause severe pressure increases, potentially damaging the pump and motor.
Note on 1-pipe systems with low tank: For 1-pipe operation with an underlying tank, connect the nozzle line to the vent port "M" and blank off the nozzle port "P". A shut-off valve is required in the nozzle line.
Direction of Rotation: Indicated by the shaft end; clockwise for right-hand, counter-clockwise for left-hand.
Venting: For 1-pipe systems, vent via port "M" on first start. For 2-pipe systems, the pump vents automatically through the return line.
Pressure Setting: Max pressure depends on pump type, viscosity, and pressure range.
First-time Starting: The RSA oil pump should not run dry for more than 5 minutes. Ensure the pump is primed with oil from the factory or previous operation.
Installation: A prefilter must be installed according to current regulations and practices.
Suction Line Lengths: 'H' represents total pressure or suction height in meters, and 'L' represents total suction line length in meters.
Media: The pump is specified for mineral-based fuel oils or media with equivalent or higher classification.
Accessories: An optional flange (part no. 070-0211) is available. Pressure setting springs for different ranges (1-5 bar, part no. 070-0030; 15-30 bar, part no. 070-0031) are also available for converting the RSA pump for feed/transport duties.

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