Danfoss CCR3 Controller Data sheet

Data sheet

CCR3+ Controller

Return temperature controller & temperature registration

Description

The CCR3+ Controller is an electronic controller for return temperature control in risers in one-pipe heating system based on supply temperature signal. With CCR3+ controller onepipe heating system becomes efficient variable flow system with riser’s flow control based on heat demand.

CCR3+ is dedicated to be used with AB-QM automatic balancing & control valve equipped with thermo actuators type TWA-Z (NO) and remote temperature sensors type ESMC.

CCR3+ together with AB-QM and TWA-Z is complete one-pipe electronic solution: AB-QTE

Main data:

•Designed for AB-QM DN 10-32 mm

•Maximum number of controlled risers: 20 (extension +16 via Slave Unit)

•No distance limitation between risers (control valves) and controller

•Pulse Wide Modulation (PWM) algorithm

•Return temperature (curve) adjustable in 9 points

•Individual riser setting possible

•Possible connection to BMS system

•Build in web server for access via mobile devices or PC (readings, settings, datalogs, etc)

•LED status indicators

•Flow control in risers based on heat demand

•Build in Web-Server App, Wi-Fi connection and LAN port

Benefits	• Improved room temperature control
	• Eliminated overheating of the building
	• Reduced heating cost with payback time less
	than 4 years
	• Remote control and access of all temperature
	setting (no need to have direct access to
	risers!)
Ordering	Inclusive in the box: CCR3+ Controller, 1 pcs ESMC sensor
	Type	Designation	Supply voltage	Actuator type/nos.	Code No.
	CCR3+ Controller	Return Temperature Controller &	24 Vdc	NO/20	003Z0396
		Temperature Registration
	Accessory
	Type	Designation	Voltage	Comments	Code No.
	TWA-Z (NO)	Thermal actuators	24 V	1.2 m. cable	082F1220
	Set:
	TWA-Z (NO) with	Thermal actuators with surface sensor	24 V	-	003Z0388
	ESMC (PT 1000)
	ESMC (PT 1000)	Surface sensor	-	2 meters cable	087N0011
	CCR+ Slave Unit	System expansion (add 16 risers)	24 Vdc	-	003Z3852

© Danfoss | 2018.12

VD.GM.E1.02 | 1

Data sheet

CCR3+ Controller

Applications

Fig. 1 CCR3+ Controller: scheme with 20 risers

Fig. 2 CCR3+ Controller: scheme with 36 risers

2 | © Danfoss | 2018.12

VD.GM.E1.02

Data sheet

CCR3+ Controller

Applications (Continuous)	AB-QTE solution converts one-pipe heating
	system - usually permanent flow system - into
	efficient variable flow system.
	This innovative solution dynamically controls the
	flow in risers according to the load in risers by
	return temperature control. Wide range of return
	temperature setting (9 setting points) ensures
	high efficiency of the system in whole range of
	supply temperature from 35-90 °C.
	In one-pipe systems flow in the risers is always
	present even when all TRV’s are closed; water
	flow through the by-pass which result in high
	operating costs (heat losses, pumping costs,
	overheating etc). TRV on the radiator controls
	room temperature by controlling flow through
	the radiator, while flow ratio between radiator
	and by-pass is varying; however total flow in
	risers remains permanent. At partial loads (some
	TRV’s are closed) return water temperature in
	risers increases, which results in overheating of
	rooms due to very hot risers.
	After the building is renovated heating system
	becomes oversized since the heat losses of the
	building decrease. As a result overheating issue
	increases even more.
	CCR3+ controller is part of AB-QTE solution
	for one pipe heating systems. It converts
	one pipe heating system (usually constant flow
	system) into efficient variable flow system. This
	innovative solution dynamically controls the
	flow in the riser according to the load in risers by
	return temperature control. Wide range of return
	temperature setting (9 setting points) ensures
	high efficiency of the system in whole range of
	supply temperature from 35-90 °C.
	In traditional one-pipe systems flow in the risers
	is present even when all TRV’s are closed. Water
	flows through the by-pass at all times. TRV on
	the radiator controls room temperature by
	controlling flow through the radiator, while flow
	ratio between radiator and by-pass is varying.
	Total flow in risers remains permanent though.
	At partial loads (some TRV’s are closed) return
	water temperature in risers increases. Result is
	high operating costs: heat losses, pumping costs,
	overheating, etc. In case building is renovated
	overheating issue increases even more as
	heating system becomes oversized.

AB-QTE concept solution:

•AB-QM mounted in the risers provides right water balance in the risers at all system condition. Every riser get designed flow and each riser is independent from the rest of installation.

•CCR3+ with temperature sensors and actuators mounted on AB-QM controls flow in risers through the return temperature control. When return temperature increases CCR3+ automatically detects this change and reduces flow in risers according to set points (lower load in risers – lower flow needed). This results in improved room temperature control and greatly reduced overheating of the building.

Compared to selfacting solution (QT thermostatic elements), AB-QTE solution covers very wide temperature setting range, as presented in Fig. 3. All points of return temperature setting correspond to supply temperature what allows automatic adaptation to weather condition according the rules: lower outside temperature , higher supply temperature – except higher return temperature, but all time optimized at any supply parameter.

•Thus one-pipe system becomes energy efficient variable flow system.

•AB-QTE solution is perfect from service, monitoring and maintenance point of view. The CCR2+ incorporates LED status indicator, build in Web-Server App, Wi-Fi connection and LAN port, which allow the user to manually set, log and monitor measured parameters from the system on smart device or PC.

Danfoss AB-QTE solution for one-pipe renovation system is a top end solution where the first double curve system control is proposed. First: on primary side , usually in sub-station where weather compensatory

control supply temperature according out-door temperature (based on weather compensator curve). Second one: on secondary side where return temperature curve is adjusted based

on supply water temperature. Lower outside temperature requires higher supply temperature which yields to also higher return temperature. Key point: at all times optimized. Thus one-pipe system becomes energy efficient variable flow system.

The return temperature can be adjusted in eight points, each correspondent to one flow temperature.

The setting can be automatically applied for all risers or using from menu additional setting function return temperature can be modified individually to each riser by:

Shift factor – allow to move up and down the curve in each point, setting range ±10 °C.

<![if ! IE]> <![endif]>[°C]
<![if ! IE]> <![endif]>Temperature	flow temperature
	return temperature

Outdoor temperature [°C]

Fig. 3 Return temperature curve graphs

VD.GM.E1.02

© Danfoss | 2018.12 | 3