Residential

Slim and unobtrusive, this low profile Model's 750s BTU output is ideal for efficient, economical residential heating installations.* Available with heavy duty18 Guage Front Covers (Model 758) for those high traffic areas, as well as 1/2" and Type M Copper.

*Stocked in 2-3-4-5-6-7-8-10 foot lengths, both complete (with elements) and enclosure only (less element).

Table 1 - Heating Capacities, BTU per hr per lin. ft. 65 degrees entering air temperature I-B-R approved 

model

Nom. Tube Size

Fin
Dimensions
H X W

Thick-
ness

Fin
Spacing
Fins/Ft.

Water
Rate
GPM

Hot Water Ratings
Average Water Temperature degrees F 

Heat
Base
750-1B

3/4"
CPR.

2 1/8" X 2 1/2"
Natural Finish

.008

54.5

4

1

150

160

170

180

190

200

210

220

230

240

410

480

550

610

690

760

829

900

970

1040

390

450

520

580

650

720

780

850

920

980
All the above I-B-R Ratings are based on active length, which is 3" less than total length, and includes a 15% addition for heating effect.
Ratings: Heating capacities are listed in Table 1 for two flow rates: 1 GPM and 4 GPM. The use of I-B-R Ratings at 4 GPM is limited to installations where the water flow rate through the baseboard unit is equal to or greater than 4 GPM. Where the water flow rate through the baseboard is not known, the I-B-R Ratings at the standard flow of 1 GPM must be used.

Table 2 - Factors for ratings at flow other than standard and pressure drop values

Rate of Flow GPM

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

6.0

Factor

1.000

1.016

1.028

1.038

1.045

1.051

1.057

1.062

1.067

1.074

Pressure Drop 3/4" Tube
Mill inches per ft.

47

96

157

230

320

420

525

650

775

1060

Note: If the calculated water flow rate through a baseboard unit in a completely designed hot water heating system is greater than the standard flow rate (1 GPM), the rating of that unit may be increased by multiplying the standard I-B-R Rating at 1 GPM by the factor shown for the calculated flow rate.