Danfoss BVX-E RO SEK Fact sheet

Fact sheet

Termix BVX-E RO SEK( ECL310/A337)SW Schwerin Friedrichsthal

Indirect substation for single-family houses or apartments

Application

The Termix BVX-E RO SEK substation is a complete solution for hot water and space heating with optimal safety, efficient energy transfer, service-friendly construction and a compact design. The substation is used if a heat exchanger is required or on a conversion to district heating where the existing equipment is unsuitable for direct connection.

District heating (DH)

The substation is prefabricated with a differential pressure controller, fitting piece and sensor pockets for insertion of a heat meter as well as strainers and ball valves.

Heating (HE)

The heating circuit consists of a plate heat exchanger, safety valves, manometer, thermometers, ball valves, drain valve, air valves and circulation pump. The temperature of the heating is electronically controlled with an outdoor temperature sensor.

Domestic hot water (DHW)

The domestic hot water circuit consists of a hot water tank with coil and a pump for controlling the temperature with possibility for DHW priority. The DHW tank and coil are enamelled and the tank contains a magnesium anode.

Construction

All pipes are made of stainless steel. The connections are made with nuts and gaskets. The Termix BVX-E RO SEK is completed by a white steel cover in a modern design with door and including external thermometers.

FEATURES AND BENEFITS

••Substation for single-family houses or apartments

••DHW regulation with pump control

••Indirect heating with electronic control

••Suitable in cases of low district heating capacity

••Operates independently of differential pressure and flow temperature

••Pipes and plate heat exchanger

••Made of stainless steel

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CIRCUIT DIAGRAM – EXAMPLE

	DHW
	DCW
	Circ.
		13
	DH	HE
		Supply
	Supply
	DH	HE
		Return
	Return

A Plate heat exchanger, HE

EDHW tank with coil

FElectronic controller 1 Ball valve

1A Ball valve, DVGW

2 Non-return valve

4 Safety valve

9Strainer

10Circulation pump, HE

11Domestic hot water pump

13Charging pump

14Sensor pocket, heat meter

16Outdoor sensor

19Surface sensor

20Filling / drain valve

24Delivered loose with unit

26Manometer

27Actuator

27A Actuator with spring return

283-way motorized valve

30Flow control w. control valve

39Connection closed

41Fitting piece, heat meter

44Immersion sensor

48Air escape, manual

49Safety thermostat

76Capvalve for expansion

Technical parameters:
Nominal pressure:	PN 10
Max. supply temperature:	Tmax = 120 °C
Brazing material (HEX):	Copper
Weight incl. cover:	120 – 150 kg
Cover:	White-lacquered
	steel sheet
Dimensions (mm):
With cover:
H 1890 × W 540 × D 640

Connections sizes:

DH + HE + DCW + DHW + Circ.: ¾“ G (int. thread)

DHW: CAPACITY EXAMPLES, 10°C / 50°C

		Tank	Coil	DHW	DHW	DHW
	Substation		supply/re-	constant	capacity	constant
		volume
	type		turn temp.	capacity	first hour*	capacity
		[l]
			[°C]	[l/h]	[l/h]	[kW]
			80 / 40	486	546	22,6
	BVX 1-x	100	70 / 30	245	305	11,4
			60 / 30	172	232	8,0
			80 / 40	486	576	22,6
	BVX 2-x	150	70 / 30	245	335	11,4
			60 / 30	172	262	8,0

* Output first hour = constant output + 60% of tank volume

HEATING: CAPACITY EXAMPLES

	Sub-				Temperature
		p	70 / 40 – 35 / 60°C		80 / 45 – 40 / 70°C		90 / 45 – 40 / 70°C
	station
	type	[kPa]*	Capacity	Flow	Capacity	Flow	Capacity	Flow
			[kW]	[l/h]	[kW]	[l/h]	[kW]	[l/h]
	BVX x-1	30	15	518	17	476	23	673
		35	16	555	18	510	25	724
	BVX x-2	30	19	671	21	619	30	865
		35	21	718	23	662	32	929
	BVX x-3	30	22	773	25	715	34	990
		35	24	828	27	765	37	1073
	BVX x-4	30	30	1018	33	941	45	1306
		35	32	1089	35	1006	49	1404

* Heat meter not included

© Danfoss | DHS-SRMT/ PL | 2018. 11

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