Danfoss AT BTD Fact sheet

Fact sheet

Termix AT BTD

Tank solution for domestic hot water preparation with thermostatic control.

Application

The Termix AT BTD is a complete tank solution for DHW preparation with a pressure independent balancing and control valve. The AT BTD is available in two versions: with and without connection for domestic cold water tap. The substation is used instead of a conventional DHW unit with a plate heat exchanger; making it the perfect choice for areas where problems with corrosion-aggressive fresh water is known to occur.

District heating (DH)

On the primary side, the unit consists of a combined balancing and control valve for thermostatic DHW control and shut-off valves for flow and return lines.

Domestic hot water (DHW) The domestic hot water circuit consists of a hot water tank with coil. The hot water tank and coil are enameled and the tank contains a magnesium anode. A safety valve is installed in the cold water mains.

Options

The AT BTD is available in a version with a connection for cold water tap. This unit also comprises fitting pieces for metering of the cold water mains and the cold water tap. Furthermore the unit has DHW shut-off valves for both DCW and DHW circuits. A mounting rail for in-wall mounting of the connections is offered as an accessory.

Construction

All pipes are made of stainless steel. The connections are made by nuts and gaskets. The Termix AT BTD is completed by a white steel cover in

modern design with door.

FEATURES AND BENEFITS

••Substation for single - family houses or apartments

••DHW regulation with a pressure independent balancing

and control valve

••Ideal for areas with corrosion aggressive fresh water

••100 or 150 ltr. tank

••Available with 4 or 5 connections; 5 connections for domestic cold water tap

••Suitable in cases of low district heating capacity

••Pipes made of stainless steel

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CIRCUIT DIAGRAM - EXAMPLE

100/4 + 150/4	100/5 + 150/5
DHW	DHW
DCW	DCW
	DWM
DHF	DHF
DHR	DHR

100/4 + 150/4

E Hot water tank with coil 1 Ball valve

4 Safety valve

20 Filling/drain valve

59 Diff./Temp. Reg. w. flow lim.

100/5 + 150/5

E Hot water tank with coil 1 Ball valve

1A Ball valve, DVGW

2 Single check valve

4 Safety valve

20 Filling/drain valve

41A Fitting piece, cold water mains

Technical parameters:
Nominal pressure:	PN 10*
DH supply temperature:	Tmax = 95° C
Weight incl. cover:
85-100 kg (incl. packing)
Cover:	White-lacquered steel
Dimensions (mm):

H 1220 x W 540 x D 520 (type 100/4 + 100/5) H1550 x W 540 x D 520 (type 150/4 + 150/5)

Connections:

The connections are situated underneath the hot water tank

Connections sizes:

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

Options:

•Fitting pieces for metering of the cold water mains and the cold water tap (type 100/5 + 150/5)

•Accessory - Mounting rail for in-wall mounting of connections

Module code number:
AT BTD 100/4:	144H1741
AT BTD 150/4:	144H1742
AT BTD 100/5:	144H1739
AT BTD 150/5:	144H1740
Mounting rail:	144H1752

DHW: Capacity examples, 10°C / 50°C

		Tank volume	Coil supply / return	DHW	DHW	DHW
	Substation type		temperature	constant output	output first hour*	constant output
		[l]
			[°C]	[l/h]	[l/h]	[kW]
			80 / 40	486	546	22,6
	AT BTD - 1	100	70 / 30	245	305	11,4
			60 / 30	172	232	8,0
			80 / 40	486	576	22,6
	AT BTD - 2	150	70 / 30	245	335	11,4
			60 / 30	172	262	8,0

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

Gemina Termix A/S · Member of the Danfoss Group · Navervej 15-17 · DK-7451 Sunds · Denmark Tel.: [phone] · Fax: [phone] · [e-mail] · www.heating.danfoss.com

© Danfoss | DHS-SRMT/ PL | 2017. 05

VL.JV.Y2.02