The Haydon Comfort-Zone Floor Vector, a recessed hydronic unit is the perfect solution for those annoying cold spots. Rugged, independently tested and rated,COMFORT-ZONE installs unobtrusively into floors and chilly areas such as patio doors and beneath picture windows. Fitted with the same element as our Heat-Base 750 series for superior output.

*Stocked in 3-4-5 foot lengths.


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

model

Nom. Tube Size

Alum. Fin
Dimensions
H X W

Thick-
ness

Fin
Spacing
Fins/Ft.

Water
Rate
GPM

Hot Water Ratings
Average Water Temperature degrees F 

Comfort-
Zone

3/4"
CPR.

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

.008

54.5

5

1

160

170

180

190

200

210

440

510

575

650

715

795

415

470

540

670

670

750

All the above I-B-R Ratings are based on active length, which is 3" less than total length.
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.