Delta Plus

Boiler type

charging

Power range

8-49 kW

Fuels

hard coal, fine coal, wood briquette, wood, edgings

Standard equipment

S3P

Optional equipment

K3P controller with servicing of mixing valve, mixing valve controller DEFRO-MZ
with weather sensor and protection of return, GSM module, Internet module, NZ version for closed system

Additional information

boiler adapted for installation in closed circuit in version DELTA PLUS NZ

DESCRIPTION

DELTA PLUS boilers are distinguished by a modern design characteristic for automatic boilers. Use of precisely selected, multipoint air supply system to the furnace ensures good combustion parameters for wide range of fuels with various grain sizes. Boiler is equipped with innovative vertical shelf heat exchanger ensuring optimal flow of flue gas and high boiler efficiency. S3P controller with modified PID algorithm ensures even better performance by lower consumption of fuel with respect to the standard controllers. Control system cooperates with two pumps (central heating and hot utility water pumps) but it can be easily developed with e.g. mixing valve module or room controller.

	4 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler.
	heat exchanger made of certified boiler steel
	electronic adjustment of boiler with servicing of two pumps and PID algorithm; adjustable angle of position of control panel
	high thermal efficiency reaching 83% thanks to increase heat recovery from flue gases
	adapted for installation in closed circuit in version NZ*
	mechanical movable grate for removal of ash from water grates
	large furnace chamber
	electronic adjustment of boiler with servicing of two pumps and PID algorithm; adjustable angle of position of control panel

(*) - extra payable equipment, installed on Customer’s request

Power range: 8-22 kW - Table no. 1

Power range: 25-49 kW - Table no. 2

Name of the boiler		Delta Plus
Specification/boiler type	Unit	8	12	16	19	22	25	28	35	42	49
Power range	kW	2,4 -8	3,6 -12	4,8 -16	5,7 -19	6,6 -22	7,5 -25	8,4 -28	10,5 -35	12,6 -42	14,7 -49
Heating area	m2	1,2	1,4	1,8	2,0	2,2	2,4	2,7	3,2	4,2	4,9
Area of heated rooms¹	m2	to 110	to 140	to 180	to 200	to 230	to 250	to 280	to 350	to 440	to 500
Single fuel charging	kg	~13	~18	~23	~23	~28	~32	~37	~51	~56	~61
Optimum thermal efficiency	%	~80,7-82%
Energy efficiency class	-	D	D	C	C	D	D	D	D	D	D
Max. permissible operation pressure	bar	opened system 1,5 / closed system 2,5
Required flue gas draught	Pa	18	21	24	26	27	28	29	31	32	34
Max. temp. of water on supply	°C	65/85
Boiler weight²	kg	235	262	295	308	331	360	390	437	497	563
Boiler water tank capacity	l	49	55	70	74	82	90	98	114	136	158
Chimney section	cmxcm	14x14	14x14	14x14	14x14	15x15	16x16	16x16	18x18	20x20	21x21
Chimney section	Ø mm	160	160	160	160	165	175	185	200	220	235
Minimum chimney height	m	5	5	6	6,5	7	7	7,5	8	8	8,5
Width	mm	648	648	648	648	698	748	798	852	852	852
Depth	mm	990	1082	1094	1094	1094	1094	1094	1114	1262	1410
Height	mm	1034	1034	1134	1184	1184	1184	1184	1236	1236	1239
Diameter of supply and return Dn	mm	G1 ½”
Diameter of flue	mm	159	159	159	159	159	159	178	178	178	178
Maximum power consumption	W	44	44	44	44	44	44	44	44	165	165
Height to bottom edge of the flue	mm	573	573	673	723	723	723	714	765	768	768
Dimensions of charging chamber and charging hole	width depth height width x height	258 270 240 258x208	258 365 240 258x208	258 404 280 258x238	258 404 280 258x288	308 404 280 308x288	358 404 280 358x288	408 404 280 408x288	458 424 330 458x288	458 464 330 458x288	458 504 330 458x288

1 Maximum area of heated rooms estimated for unit heat demand q=95W/m².
2 Boiler weight depends on the equipment.
3 Extra paid option, installed on the customer’s request.
4 Foot of mobile grate is not available for 8kW model.