Load unit

LTC200

The series LTC200 is a load unit with integrated high efficiency pump. The load unit makes sure that the boiler gets up to a high combustion temperature so as to ensure the lowest possible emissions. Above all, the load unit make sure that the return temperature to the boiler is kept high and guaranteed over the entire combustion cycle which enables a higher level of boiler efficiency, reduced tarring and increased life span of the boiler. The high efficiency pump included in the load unit fulfills the new EU directive on energy related products. This directive defines the standardized requirements for energy efficiency and maximizes the EEI (Energy Efficiency Index) to 0.23.

Accurate control of the return water temperature.
Fully adjustable pump speed to optimize the storage tank loading.
High efficiency pump according to the new ErP directive.
Integrated venting function.

Product range

Series LTC261, Internal thread with electronic 6 m pump

Art.no.	Reference	DN	Connection	Power* kW* The following recommendations apply only for this product. For the overall system requirements, restrictions in the possible power output can occur.	Power* (max. ∆t) °C* The following recommendations apply only for this product. For the overall system requirements, restrictions in the possible power output can occur.	Opening temperature	A mm	B mm	C mm	D mm	Weight kg
55004000	LTC261	25	G 1"	95	35	55°C ± 5°C	207	50	209	110	4.40
55004100	LTC261	25	G 1"	80	30	60°C ± 5°C	207	50	209	110	4.40
55004200	LTC261	25	G 1"	65	25	65°C ± 5°C	207	50	209	110	4.40
55004300	LTC261	25	G 1"	55	20	70°C ± 5°C	207	50	209	110	4.40
55004400	LTC261	32	G 1¼“	95	35	55°C ± 5°C	227	50	219	110	4.55
55004500	LTC261	32	G 1¼“	80	30	60°C ± 5°C	227	50	219	110	4.55
55004600	LTC261	32	G 1¼“	65	25	65°C ± 5°C	227	50	219	110	4.55
55004700	LTC261	32	G 1¼“	55	20	70°C ± 5°C	227	50	219	110	4.55
55004800	LTC261	40	G 1½“	95	35	55°C ± 5°C	241	50	226	110	4.60
55004900	LTC261	40	G 1½“	80	30	60°C ± 5°C	241	50	226	110	4.60
55005000	LTC261	40	G 1½“	65	25	65°C ± 5°C	241	50	226	110	4.60
55005100	LTC261	40	G 1½“	55	20	70°C ± 5°C	241	50	226	110	4.60

Series LTC271, Internal thread with electronic 7.5 m pump

Art.no.	Reference	DN	Connection	Power* kW* The following recommendations apply only for this product. For the overall system requirements, restrictions in the possible power output can occur.	Power* (max. ∆t) °C* The following recommendations apply only for this product. For the overall system requirements, restrictions in the possible power output can occur.	Opening temperature	A mm	B mm	C mm	D mm	Weight kg
55007100	LTC271	40	G 1½“	130	40	50°C ± 5°C	241	50	226	110	4.6
55007200	LTC271	40	G 1½“	115	35	55°C ± 5°C	241	50	226	110	4.6
55007300	LTC271	40	G 1½“	100	30	60°C ± 5°C	241	50	226	110	4.6
55007400	LTC271	40	G 1½“	80	25	65°C ± 5°C	241	50	226	110	4.6
55007500	LTC271	40	G 1½“	65	20	70°C ± 5°C	241	50	226	110	4.6
55007600	LTC271	50	G 2“	130	40	50°C ± 5°C	246	50	228	110	6.0
55007700	LTC271	50	G 2“	115	35	55°C ± 5°C	246	50	228	110	6.0
55007800	LTC271	50	G 2“	100	30	60°C ± 5°C	246	50	228	110	6.0
55007900	LTC271	50	G 2“	80	25	65°C ± 5°C	246	50	228	110	6.0
55008000	LTC271	50	G 2“	65	20	70°C ± 5°C	246	50	228	110	6.0

Installation support

Installation examples

Installation instruction

LTC200

Technical data

Suitable application area

Recommended

Heating

Technical data

Pressure class:	PN6

Media temperature,	max.: +110 °C min.: 0 °C

Ambient temperature,	max.: 60 °C min.: 0 °C

Leakrate A - AB:	max. 0.5% of max. flow (Qmax)

Leakrate B - AB:	max. 3% of max. flow (Qmax)

Rangeability Kv/Kv min:	100

Supply voltage:	230 ± 10% VAC, 50 Hz

Power consumption,	LTC261: 3-45 W LTC271: 3-76 W

Energy classification:	A

EEI (Energy Efficiency Index), circulation pump:	<0,23

Power supply cable:	0.1 m

Connections,	Internal thread (G): ISO 228/1

Material,	Valve body and cover: Nodular iron, EN-JS 1050

Conformity CE_A-01

LVD 2014/35/EU
EMC 2014/30/EU
RoHS 2011/65/EU
PED 2014/68/EU, article 4.3

ErP 2009/125/EU
Erp 2015

Flow pattern Mixing_A-01

Dimensioning $name

Dimensioning guide - Please see data sheet

Wiring

The pump should be preceded by a multi-pole contact breaker in the fixed installation.

Accessories and spare parts

Options

Image	Art.no.	Reference	Designation
VTC951 Thermostat VTC951, 55°C.	57020200	VTC951	Thermostat 55°C
VTC951 Thermostat VTC951, 60°C.	57020300	VTC951	Thermostat 60°C
VTC951 Thermostat VTC951, 65°C.	57020800	VTC951	Thermostat 65°C
VTC951 Thermostat VTC951, 70°C.	57020400	VTC951	Thermostat 70°C

Spare parts

Image	Art.no.	Reference	Designation	National trade code	Note	Data sheet	Instructions manual
LTC926 ESBE LTC926 Pump Yonos Para / 6 RKA	57061100	LTC926	Pump Yonos Para / 6 RKA
LTC926 ESBE LTC926 Pump Yonos Para / RKA7,5	57061200	LTC926	Pump Yonos Para / RKA7,5

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Data Sheet

LTC200

Installation instruction

LTC200

Certificate

Declaration of Conformity LTC200

Certificate

Building Product Declaration BPD3

Image

LTC200, high res