Post on 24-Oct-2021
Superior design combined with industry leading efficiency makes Haydon’s Hi-Output 958 the best choice for both the specifying engineer and the heating contractor. Its durable construction with standard 18 gauge front cover makes the 958 ideal for demanding residential and commercial applications, and its reliability and quiet operation are a plus in every setting. Choose from 5 elements. Each uses our standard 18 gauge cover.
ElementModel
Alum./Steel Fin Dimensions Thickness
Fin Spacing Fins/Ft.H W
Hi-Output 958-2 21⁄2" 31⁄4" 0.015 55
Hi-Output 958-3 23⁄4" 31⁄4" 0.020 54
Hi-Output 958-4 3" 31⁄4" 0.026 48
Hi-Output 958-5 3" 31⁄4" 0.020 54
Note: All element models are natural finish.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 heat-ing system is greater than the standard flow rate (1 GPM), the rating of that unit may be increased by multiplying the standard rating at 1 GPM by the factor shown for the calculated flow rate.
Residential / Light Commercial for Hot Water or Steam
HI-OUTPUT 958-2 (STANDARD ELEMENT)TABLE 3 — HEATING CAPACITIES, BTU PER HR. PER LIN. FT. 65° ENTERING AIR TEMPERATURE
Nom.TubeSize
Thick-ness
Alim Fin Dimensions Fin/Ft.
WaterRateGPM
Hot WaterAverage Water Temperature °F
H W 90° 100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200° 210° 220° 230° 240°
3⁄4" Copper 0.015 2-1⁄2" 3-1⁄4" 54.5
4 100* 170* 240* 320* 410* 500* 590 700 790 900 1,000 1,110 1,200 1,310 1,420 1,510
1 95* 160* 230* 310* 390* 470* 560 660 750 850 950 1,050 1,140 1,240 1,340 1,430
* Ratings at 140°F and lower temperatures determined by multiplying 150°F rating by the applicable reduction factor.All the above 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 3 for two flow rates: 1 GPM and 4 GPM. The use of 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 ratings at the standard flow rate of 1 GPM must be used.
HI-OUTPUT 958-2 (Standard Element)
HI-OUTPUT 958
Complete Baseboard
Baseboard does not include end caps; End caps and other accessories must be purchased separately
Enclosure Only Baseboard
Model Home Depot Internet # Description
HB958-2E 316352955 2 ft. Hydronic Heating Enclosure Only
HB958-3E 316352949 3 ft. Hydronic Heating Enclosure Only
HB958-4E 316352942 4 ft. Hydronic Heating Enclosure Only
HB958-5E 316352485 5 ft. Hydronic Heating Enclosure Only
HB958-6E 316352931 6 ft. Hydronic Heating Enclosure Only
HB958-7E 316352471 7 ft. Hydronic Heating Enclosure Only
HB958-8E 316352464 8 ft. Hydronic Heating Enclosure Only
Model Home Depot Internet # Description
HB958-2FA 316352453 2 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-3FA 316352448 3 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-4FA 316352639 4 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-5FA 316352545 5 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-6FA 316352397 6 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-7FA 316352423 7 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
HB958-8FA 316352295 8 ft. Fully Assembled Enclosure and Element Hydronic Baseboard
Baseboard does not include end caps; End caps and other accessories must be purchased separately
Model A B C D
HB958-HRE* 4”
HB958-HLE* 4”
Model Home Depot
Internet # A B C
HB958-RE 316352512 3”
HB958-LE 316352506 3”
* Not available online—must be Special Ordered at your
local Home Depot ProDesk
Model Home Depot
Internet # A B
HB958-WT 316353024 3”
HB958-WT6* 6”
Model Home Depot
Internet # A B
HB958-IC 316353028
HB958-IC135*
Model Home Depot
Internet # A B C
HB958-OC 316353121
HB958-OC135*
* Not available online—must be Special Ordered at your
local Home Depot ProDesk
* Not available online—must be Special Ordered at your
local Home Depot ProDesk
* Not available online—must be Special Ordered at your
local Home Depot ProDesk
Model A B
HB958-JS* 3” 8”
Model A B
HB958-CE7* 7”
HB958-CE14* 14”
* Not available online—must be Special Ordered at your
local Home Depot ProDesk
ADDITIONAL INFORMATION All Haydon Heat-Base 958 Snap-on Accessories that are not avail-
able online can be Factory Special Ordered at a Home Depot
ProDesk.
Factory Lead Time for Special Order items is 4+ weeks.
Please call 978-651-3300 with any questions.
* Not available online—must be Special Ordered at your
local Home Depot ProDesk