Manual fired boiler for wood PEREKO RETRO

Heating boilers of the RETRO series are designed to be installed in central heating systems in single-family houses, garages, and utility rooms. These boilers belong to the group of low-temperature water boilers and therefore do not require registration with the local Technical Inspection Office. They are intended for use in water-based central heating systems, either gravitational or with forced circulation in an open system, which have safeguards in accordance with the requirements of PN-91/B-02413.

WARNING! It is required that the boiler operates in a system with an accumulation tank.

Advantages:

High-quality boiler steel ensures long-lasting integrity and increased resistance to corrosion.
Multi-pass flue gas channel ensures efficient operation and strengthens the boiler's structure.
Ceramic catalysts result in better combustion and lower emissions of pollutants.
Large loading chamber allows for the burning wood.
Classic movable grate facilitates cleaning.

Technical Data:

Parameter		Unit	Model
Parameter		Unit	RETRO 16-14	RETRO 22-21
Dimensions	D	[mm]	∅ 159
	L1		757
	L2		705
	L		1018
	H		1278	1316
	H1		1203	1240
	H2		1027	1052
	H3		249
	S		600	625
	S1		493	518
	S2		429	454
	Loading opening E		300x166	325x166
Primary fuel		[-]	Wood logs
Heat output range		[kW]	14	20
Minimum buffer tank capacity		[L]	800	1000
Volume of heated spaces		[m³]	460	700
Heated area		[m²]	185	280
Boiler water capacity		[L]	70	77
Combustion chamber volume		[L]	33	37
Maximum working pressure		[bar]	2
Required minimum chimney draft		[mbar]	0.20
Flue gas temperature	Nominal power	[°C]	153.8	143.1
Flue gas mass flow wood	Nominal power	[g/s]	9.5	15
Fuel consumption for nominal power at a calorific value of 17 MJ/kg		[kg/h]	3.55	5.35
Water flow resistance at nominal power	Δt = 10K	[mbar]	7.06	9.42
Water flow resistance at nominal power	Δt = 20K	[mbar]	5.57	4.86
Water temperature at supply min./max		[°C]	57/85
Minimum return water temperature		[°C]	50
Coal retention time		[h]	2.3	2
Noise		[dB]	<65
Boiler weight without water		[kg]	262.5	278
Diameter of supply and return connection		[-]	GZ 1 1/2”
Thermal efficiency according to PN-EN 303-5:2012-09		[%]	89.52	89.64
Energy class wood		[-]	A+
Controller / Fan		[-]	No/No
Warranty		[-]	5 years on exchanger tightness, 2 years on components
Heat exchanger material		[-]	Steel P265GH PN-EN 10028