Halstock stainless steel calorifier

Stainless steel single coil and twin coil calorifiers for indirect hot water.
5 unvented calorifier models and 4 open-vented calorifiers available with continuous outputs (@44°C ∆T) of 390, 527, 1,843 and 2,106 l/h.

Product information

Power outputs 20-108kW and storage capacities 305-965 litres
Indirect method of producing safe and hygienic domestic hot water (want to understand the difference between Indirect vs Direct Hot Water Systems?)
Fast recovery for constant hot water – as little as 13 minutes (Recovery times for 70% of the cylinder volume to 50°C 13-22 minutes)
Hot water cylinder and coil made out of corrosion resistant stainless steel for a long life backed up by a 5 year cylinder warranty
Now available with twin coils for flexibility and high performance hot water (models 500-965 only)
Can be integrated with solar thermal for a renewable energy option
Minimal heat loss for maximum economy thanks to layer of CFC-free polyurethane tank insulation under protective plastisol cladding
Highly efficient heat transfer from a corrugated coil design
Low maintenance as no sacrificial anodes or powered corrosion protection systems needed
Can be located wherever convenient
Versatility in use – coupled to Hamworthy commercial boilers or backup via immersion heater
UK manufactured hot water calorifiers
Compliant with Energy Labelling requirements of ErP
Available for next day delivery (dependent on stock availability, charges apply, order cut-off 12pm).

To provide domestic hot water for any type of commercial building.
Designed for use with natural gas, LPG or oil-fired commercial boilers for primary heat source.
Direct heating via optional Incoloy 800 electrical immersion heaters.
Suited to all areas of the UK, particularly locations with soft water (read here why).

Electric immersion heater kits
Top-to-bottom re-circulation/de-stratification kit to prevent stratification and protect against legionella within the water heater (factory fitted – please specify at time of ordering)
Choose from a wide range of service contracts to help maintain optimum performance.

Water

	Units	HS305	HS400	HS5002CO	HS8102CO	HS9652CO
Capacity, nominal	litres	305	400	500	810	965
Capacity with coil	litres	298	396	496	803	958
Continuous output @44°C ΔT	l/h	390	527	1843	1843	2106
Continuous output @50°C ΔT	l/h	344	464	1622	1622	1853
Maximum working pressure, tank	bar	6	6	6	6	6
Hydraulic test pressure	bar	9	9	9	9	9

Energy

	Units	HS305	HS400	HS5002CO	HS8102CO	HS9652CO
Number of coils		1	1	2	2	2
Lower coil output	kW	20	27	67.5	67.5	81
Heat up time @50°C ΔT,lower coil only	min	54	53	26	42	42
Upper coil output	kW	N/A	N/A	27	27	27
Heat up time @50°C ΔT,top coil only	min	N/A	N/A	66	105	126
Heat up time @50°C ΔT,combined coils	min	N/A	N/A	19	31	31
Recovery time 70% @50°C ΔT, combined coils	min	38	36	13	21	22
10 min peak output @50°C ΔT	litres	361	481	770	1080	1274
Coil max operating temperature	°C	100	100	100	100	100
Coil max operating pressure	bar	3	3	3	3	3
Upper coil tube diameter	DN	NA	NA	DN25	DN25	DN25
Upper coil surface area	m2	NA	NA	1	1	1
Lower coil tube diameter	DN	DN20	DN25	DN25	DN25	DN25
Lower coil surface area	m2	0.75	1	2.5	2.5	3
Reheat total delta T 50degC lower	mins	38	36	18	29	29
Reheat total delta T 50degC both	mins	N/A	N/A	13	21	22
Standby losses	kW/24hr	1.77	2.35	2.74	3.29	3.43
ErP efficiency rating	-	C	C	C	Compliant	Compliant

Immersion

	Units	HS305	HS400	HS5002CO	HS8102CO	HS9652CO
Immersion heater option, power	kW	3	6	6	9	12
Immersion heater option, phase	ph	1ph	3ph/1ph	3ph/1ph	3ph	3ph
Heat up time, Immersion only	hour	5.8	3.9	4.9	5.3	4.7
Recovery time, Immersion only	hour	4.1	2.7	3.4	3.7	3.3

	Units	HS305	HS400	HS5002CO	HS8102CO	HS9652CO
Expansion vessel size	litres	24	35	35	50	80
Weight empty	kg	75	105	115	140	180
Weight full	kg	379	505	615	950	1145