Danfoss VX-Compact-28-HWP Fact sheet

Fact sheet

Termix VX-Compact-28-HWP

Indirect substation for apartment buildings with up to 25 apartments

FEATURES AND BENEFITS

•• Substation for apartment buildings

•• Indirect heating, connections for domestic hot water tank

•• Thermostatic or electronic regulation of heating (HE) temperature

•• Capacity: 35-75 kW heating

•• Minimum space required for installation

•• Pipes and plate heat exchanger made of stainless steel

Application

The Termix VX Compact 28 is a complete solution for space heating with optimal safety, efficient energy transfer, service-friendly construction and a compact design. The substation is applicable, if a heat exchanger is required or on a conversion to district heating, where the existing equipment is unsuitable for direct connection. The Termix VX Compact 28 substation is ideal, where a high level of security against burst pipes and water damage in the heating system is required.

District heating (DH)

The district heating circuit is prefabricated with motorized control valve, differential pressure controller, thermometers, ball valves, fitting piece and sensor pockets for insertion of a heat meter.

Heating (HE)

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

Domestic hot water (DHW)

Termix VX Compact 28 is supplied with connection pipes for a DHW tank on the supply line.

Options

As an option the substation can be equipped with a thermostat with safety monitor. This is possible only for substations with electronic controller.

Construction

All pipes are made of stainless steel. The connections are made by nuts and gaskets. The Termix VX Compact 28 is delivered with a white-lac- quered steel cover.

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CIRCUIT DIAGRAM – EXAMPLE
						A	Plate heat exchanger HE
						F	Electronic controller
						1	Ball valve
						4	Safety valve
						9	Strainer
						10	Circulation pump
						14	Sensor pocket, energy meter
						16	Outdoor sensor
DH					HE	18	Thermometer
						19	Surface sensor
supply					supply	20	Filling/drain valve
DH					HE	23	Ball valve
						24	Delivered loose with unit
return					return	25	Manometer with ball valve
						26	Manometer
						27	Actuator
						29	2-way motorized valve
						41	Fitting piece, energy meter
						48	Air escape, manual
						50	Diff. pressure cont. flow limiter
Technical parameters:			Connections:		Connections sizes:
Nominal pressure:	PN 16		1	District heating supply (DH)	DH:			1” (ext. thread)
DH supply temperature:	Tmax	= 120 °C	2	District heating return (DH)	HE:			1” (int. thread)
Brazing material (HEX):	Copper		3	Heating supply (HE)	DCW + DHW:			¾” (int. thread)
Weight:			4	Heating return (HE)	Options:
	approx. 50 kg		5	Tank supply (DHW)
Dimensions (mm):			6	Tank return (DCW)	• Thermostat with safety monitor
H 940 × W 620 × D 420					wall
Electrical supply:	230 V AC

seen from above

HEATING: CAPACITY EXAMPLES

	Substation	Heating	Heating circuit	Heating circuit	Flow rate	Flow rate
		capacity	primary	secondary	primary	secondary
	type
		[kW]	[°C]	[°C]	[l / h]	[l / h]
		50	90 / 55	50 / 70	1200	2238
		50	80 / 55	50 / 70	1830	2238
	Type 1	35	75 / 55	50 / 70	1823	1623
		50	90 / 60	55 / 75	1426	2238
		35	80 / 60	55 / 75	1797	1623
		75	90 / 55	50 / 70	1801	3378
		75	80 / 55	50 / 70	2735	3378
	Type 2	55	75 / 55	50 / 70	2723	2460
		75	90 / 60	55 / 75	2140	3378
		55	80 / 60	55 / 75	2687	2460

Danfoss GmbH Fernwärmeund Regelungstechnik · Carl-Legien-Str. 8 · 63073 O enbach

TechnischeBeratung/Angebote: Tel.: 069 / 8902 - 960 · Fax: 069 / 8902 466 - 948 · [e-mail] Auftragsabwicklung: Tel.: 069 / 8902 - 970 · Fax: 069 / 8902 466 - 949 · [e-mail]

© Danfoss | DHS-SRMT/ PL | 2016 . 04

VL.IE.I2.02