Optima Company 1001 installation instructions Built-in Central Heating Water Circulating Pump

1001

Built-in Central Heating Water Circulating Pump

The pump head available for circulating the water is given in fig. 8.

N.B. - The pump is factory set at position 3. The pump is a Grundfos type 15-50 UPS series.

Grunfos Pump performance graph

Note - Minimum flow through boiler heat exchanger at any time should not fall below 6 litres per minute.

If required an additional expansion vessel may be fitted to the central heating return inlet.

If the total volume of water in the system exceeds 40 litres an additional expansion vessel must be fitted to the central heating return inlet.

Pump performance curve Grundfos UPS 15-50

SAFETY VALVE				3.0
SETTING (bar)
VESSEL CHARGE		0.5				1.0		1.5
PRESSURE (bar)
INITIAL SYSTEM	1.0	1.5	2.0		1.5		2.0	2.0
PRESSURE (bar)
TOTAL WATER	EXPANSION VESSEL VOLUME (litres)
CONTENT of SYSTEM
LITRES
25	3.5	6.5	13.7		4.7		10.3	8.3
50	7.0	12.9	27.5		9.5		20.6	16.5
75	10.5	19.4	41.3		14.2		30.9	24.8
100	14.0	25.9	55.1		19.0		41.2	33.1
125	17.5	32.4	68.9		23.7		51.5	41.3
150	21.0	38.8	82.6		28.5		61.8	49.6
175	24.5	45.3	96.4		33.2		72.1	57.9
200	28.0	51.8	110.2		38.0		82.4	66.2
For syst. volumes other than	0.140	0.259	0.551		0.190		0.412	0.33
those given above, mult. the syst.
volume by the factor across

1 2 3 Speed settings A Boiler pressure drop

B Max. available pump head C.H.

Fig. 8

SIZING OF ADDITIONAL EXPANSION VESSELS: Deduct from the value given in the table the 7 litre vessel supplied.

Note

1.Fill C.H. installation to min. 1.5 bar.

2.Select by preference the expansion vessel for increased system pressure of 2.0 bar

3.Expansion vessel must be fitted to Central Heating Return Inlet

4.The standard 7 litres expansion vessel is charged to 1 bar

Fig. 9

12