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Floor Temperature Total Length of Outside Wall (m)
Area m
2
Options 1.5m 2m 3m 4m 5m 6m 7m 8m 9m 10m 11m 12m 13m 14m 15m 16m 17m 18m 19m 20m
Up to Comfort S/XS S S M M M
3m
2
Background S/XS S/XS S S S M
Up to Comfort S M M M L L L L
6m
2
Background S S S S M M M M
Up to Comfort S M M L L L L MS SM 2M
9m
2
Background S S M M M M M L L L
Up to Comfort M M L L L MS MS MS 2M 2M 2M LM
12m
2
Background S M M M M L L L L MS MS MS
Up to Comfort L L L L MS MS 2M 2M 2M LM LM 2L 2L
15 m
2
Background M M M M L L L MS MS MS 2M 2M LM
Up to Comfort L L L MS MS 2M 2M 2M LM LM 2L 2L 2L 3M 3M
18m
2
Background M M M L L L MS MS MS MS 2M 2M 2M 2M LM
Up to Comfort L L MS MS 2M 2M 2M LM LM 2L 2L 2L 3M 3M 3M 2L+S
21m
2
Background M M L L L MS MS MS MS 2M 2M 2M 2M LM LM LM
Up to Comfort L MS MS 2M 2M 2M LM LM 2L 2L 2L 3M 3M 3M 2L+S 2L+S 2L+S
24m
2
Background M L L L MS MS MS MS 2M 2M 2M LM LM ML 2L 2L 2L
Up to Comfort MS MS 2M 2M 2M LM LM 2L 2L 2L 2L 3M 3M 3M 2L+S 2L+S 2L+M 2L+M
27m
2
Background L L L MS MS MS MS 2M 2M 2M LM LM LM 2L 2L 2L 2L 2L
Up to Comfort 2M 2M 2M LM LM 2L 2L 2L 2L 2L+S 2L+S 2L+S 2L+S 2L+M 2L+M 2L+M 2L+M 3L 3L 3L
30m
2
Background L L MS MS MS 2M 2M 2M 2M 2M LM LM 2L 2L 2L 2L 2L 3M 3M 3M
Up to Comfort 18 18 18 18 18 18
3m
2
Background 18 18 18 18 18 18
Up to Comfort 18 18 18 18 24 24 24 24
6m
2
Background 18 18 18 18 18 18 18 18
Up to Comfort 18 18 18 24 24 24 24 18+S 18+S 18+S
9m
2
Background 18 18 18 18 18 18 18 24 24 24
Up to Comfort 18 18 24 24 24 18+S 18+S 18+S 18+M 18+M 18+M 18+M
12m
2
Background 18 18 18 18 18 24 24 24 24 18+S 18+S 18+S
Up to Comfort 24 24 24 24 18+S 18+S 18+S 18+S 18+M 24+M 24+M 24+M 24+L
15m
2
Background 18 18 18 18 24 24 24 24 18+S 18+S 18+S 18+M 18+M
Up to Comfort 24 24 24 18+S 18+S 18+S 18+M 18+M 24+M 24+M 24+L 24+L 24+L 24+L 24+L
18m
2
Background 18 18 18 24 24 24 24 18+S 18+S 18+S 18+M 18+M 18+M 18+M 24+M
Up to Comfort 24 24 18+S 18+S 18+S 18+S 18+M 18+M 18+M 24+M 24+M 24+L 24+L 24+L 18+2M 18+2M
21m
2
Background 18 18 24 24 24 24 18+S 18+S 18+S 18+M 18+M 18+M 24+M 24+M 24+M 24+M
Up to Comfort 24 24 18+S 18+S 18+S 18+M 18+M 24+M 24+M 24+L 24+L 24+L 18+2M 18+2M 24+2M 24+2M 24+2M
24m
2
Background 18 24 24 24 24 18+S 18+S 18+S 18+M 18+M 18+M 24+M 24+M 24+M 24+L 24+L 24+L
Up to Comfort 18+S 18+S 18+S 18+M 18+M 18+M 24+M 24+M 24+L 24+L 24+L 18+2M 18+2M 18+2M 18+2M 24+2M 24+2M
27m
2
Background 24 24 24 24 18+S 18+S 18+S 18+M 18+M 18+M 24+M 24+M 24+M 24+L 24+L 24+L 24+L 24+L
Up to Comfort 18+M 18+M 18+M 24+M 24+M 24+L 24+L 24+L 24+L 18+2M 18+2M18+2M 18+2M 18+2M 24+2M 24+2M 24+2M 24+2L 24+2L 24+2L
30m
2
Background 24 24 24 18+S 18+S 18+M 18+M 18+M 18+M 18+M 24+M 24+M 24+L 24+L 24+L 24+L 24+L 18+2M 18+2M 18+2M
Up to Comfort 600 600 1000 1000 1250 1250
3m
2
Background 600 600 600 1000 1000 1000
Up to Comfort 600 1000 1000 1250 1250 1500 1500 2000
6m
2
Background 600 600 1000 1000 1000 1250 1250 1500
Up to Comfort 1000 1000 1250 1250 1500 1500 2000 2000 2000 2250
9m
2
Background 1000 1000 1000 1250 1250 1250 1500 1500 2000 2000
Up to Comfort 1250 1250 1250 1500 1500 2000 2000 2000 2250 2500 2500 2500
12m
2
Background 1000 1000 1250 1250 1250 1500 1500 1500 2000 2000 2000 2000
Up to Comfort 1250 1250 1500 1500 2000 2000 2250 2250 2500 2500 2750 3000 3000
15m
2
Background 1000 1250 1250 1500 1500 1500 2000 2000 2000 2250 2500 2500 2500
Up to Comfort 1500 1500 2000 2000 2000 2250 2500 2500 2500 2750 3000 3000 3250 3500 3500
18m
2
Background 1250 1250 1250 1500 1500 1500 2000 2000 2250 2250 2500 2500 2500 2500 2750
Up to Comfort 1500 2000 2000 2000 2250 2250 2500 2500 2750 3000 3000 3250 3500 3500 4000 4000
21m
2
Background 1250 1500 1500 1500 2000 2000 2000 2000 2250 2250 2500 2500 2750 2750 3000 3000
Up to Comfort 2000 2000 2000 2250 2500 2500 2750 2750 3000 3000 3250 3500 3500 4000 4000 4000 4000
24m
2
Background 1500 1500 2000 2000 2000 2000 2250 2250 2500 2500 2500 2750 2750 3000 3000 3250 3250
Up to Comfort 2000 2000 2250 2500 2500 2750 3000 3000 3250 3500 3500 4000 4000 4000 4100 4400 4400 4750
27m
2
Background 1500 1500 2000 2000 2000 2000 2250 2500 2500 2500 2750 2750 3000 3000 3250 3250 3500 3500
Up to Comfort 2250 2500 2500 2500 2750 3000 3000 3250 3250 3500 3500 4000 4000 4000 4100 4400 4400 4750 4750 5000
30m
2
Background 2000 2000 2000 2000 2000 2250 2500 2500 2500 2750 2750 3000 3000 3250 3250 3500 3500 4000 4000 4000
Extra Small (XS) = TSR6 = 0.9kW Small (S) = TSR12 = 1.7kW Medium (M) = TSR18 = 2.5kW Large (L) = TSR24 = 3.4kW
Sizing Guide
Storage and panel heaters
To use these tables, select the type of
heater and the appropriate sizing guide
table. Then read across from the nearest
floor area and appropriate external wall
length to where the columns intersect.
There are two temperature options given
in each table:
• Comfort - approximately 21°C for living areas
• Background - approximately 18°C, typically
required in bedrooms
Choose either comfort or background
heating for the suggested heater size.
These tables are based on conventionally
constructed single or two storey
dwellings within:
• Ceiling heights of 2.5m (8ft)
• Roof insulation of 25mm (1in) thick
• Brick cavity walls with no insulation
• An external temperature of -1°C
Tables for storage and storage fan heaters also assume
the use of 7 hour economy tariff electricity.
Please check your tariff and metering requirements
with either your electricity supplier or call the Creda
Technical Centre on 08709 000430.
Technical Specification
Product Selector
Panel heaters Storage fan heaters Storage heaters
44
+44 (0) 1733 456789 www.creda-heating.co.uk