DESIGN: Oil/Gas/LPG fired Four pass Design UNITHERM’S Non IBR Design Boilers are most economical to use & pocket friendly for installation. The Unitherm fully automatic Non IBR Boilers comprise of machine wound, specially designed concentric helical coils placed inside a sturdy M.S.shell. The system comprises of three distinct passes of the flue gases in the Boiler & the non-pressurised heat recovery unit with heat Optimiser constitutes the fourth pass, maximizing the efficiency.

Design available in all the fuel options & also with dual fuel Burner with a simple changeover switch.

A special, anti drip design, high efficiency, imported burner of Riello (Italy) make with low noise blower and fuel oil pump ensure almost smokeless and silent operation and reduces the downtime and maintenance problems greatly. Due to it’s unique design & efficient mixing of air & fuel, the combustion efficiency & hence the efficiency of the Boiler is also increased. The connected load is also much lower compared to any indigenous burner resulting in sizeable power savings.

The generously designed inner combustion chamber ensures large furnace volume and hence less heat load per unit volume, thereby increasing the life of the coil. The Safety controls and instrumentation provided ensure completely safe operation and provide Audio Visual alarm and cuts off the ignition system is case of abnormal operating conditions.

The Safety controls and instrumentations provided ensure completely safe operation and provide Audio Visual Alarm and cuts off the combustion in case of abnormal operating Conditions.

Product Feature	User Benefit
Four Pass Design	High efficiency, Low fuel cost
Instant steaming	Ideal for Intermittent operations also
Non IBR Design	Lower Investment, No cost of IBR Approvals & yearly passing
Ready to use Packaged design	Faster Installation & commissioning, no hidden costs
Minimum foot print area	Lower floor space required
Easy access for maintenance & cleaning	Ease of operation & Maintenance
Coil made from 9 Gauge, 3.66 mm Boiler Tubes	Longer Coil life
Higher Heat transfer area per Lac Heat Output	 Ensures rated output  Longer Coil life
Multiple safety features	Safe & trouble free operation through the life of the Heater

MODEL		SPR 1	SPR 2	SPR 3	SPR 4	SPR 6	SPR 8	SPR 10	SPR 12
OUTPUT F& A1000C	KGS/HR	100	200	300	400	600	800	1000	1250
LDO CONSUMPTION	KGS/HR	6	12	18	24	36	48	60	73

LDO Consumption in Kgs/Hr based on GCV of LDO 10500 Kcal/Kg

Sr. No.	Safety Description	Controlling Instruement	Remarks	Safety Interlock
1	Steam Pressure reaches HIGH set point	Pressure Switch	Normal Operation	Boiler Cuts Off
2	Steam Pressure High	Safety Valve	Mechanical safety	Valve Blows off
3	Flame Failure	Photocell	Normal Operation	Purging & Restart*
4	Flame Monitoring	Sequence Controller	Normal Operation	Purging & Restart*
5	Steam Temperature High	Digital Temp Controler	Abnormal Operation	Burner Cut-off & Hooter
6	Stack Temperature High	Digital Temp Controler	Abnormal Operation	Burner Cut-off & Hooter
7	Blower motor Overload	MCB	Abnormal Operation	Burner Cut-off & Hooter
8	Pump motor Overload	MCB	Abnormal Operation	Burner Cut-off & Hooter
9	No Water Flow	Level Sensor	Abnormal Operation	Burner Cut-off & Hooter
10	Blow down Valve Open	Limit Switch	Abnormal Operation	Burner Cut-off & Hooter
11	Excess pressure built up	Spring Loaded safety Door	Mechanical Safety	Excess Gases Released
12	Excess Pump pressure	Surge Supressor	Mechanical Safety	Releases Excess Pressure, prevents Damage