958

Hi-Output 958-2 Complete Baseboard Heater

  • 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.
  • The Hi-Output 958 series baseboard comes complete including 3/4"" element with 2-1/2"" x 3-1/4"" aluminum fins and cover.
  • End caps not included, must buy separately.
  • Its durable construction with standard 18 gauge front cover makes the 958 ideal for demanding residential and commercial applications.
  • Its reliability and quiet operation are a plus in every setting.
  • Choose from 5 elements. Each uses our standard 18 gauge cover.
  • Part number 66000 is for 2ft complete assembly heating system, please see table below for additional lengths available and part numbers.
  • Additional accessories sold separately, see Baseboard Accessories.

Notes:

  • Complete Assembly and Cover Only are stocked in 2', 3', 4', 5', 6', 7', 8' and 10' lengths.
  • Element only is stocked in 2', 3', 4', 5', 6', 7' and 8' lengths.
  • Other lengths are available upon request.
  • Complete assembly and cover only are packed 50 pcs per skid.
  • One support cradle supplied, at no charge, with every 2 ft. of steel element
  • Joiner Sets are not packed with the 958 series.
  • Product must be ordered separately.

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Specifications

Available Lengths (ft) Nominal Tube Size Finished Dimensions (H x W) Finish Weight (lbs/ft) Thickness Fin/ft Pieces/Carton Pieces/Skid
2, 3, 4, 5, 6, 7, 8, 10 3/4" Copper 2-1/2" x 3-1/4" Natural 3.5 0.015 54.5 1 50

HEATING CAPACITIES, BTU PER HR PER LIN. FT. 65° ENTERING AIR TEMPERATURE

HI-OUTPUT 958-2

Hot Water Ratings
Nom. Tube Size Water Rate GPM 90° 100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200° 210° 220° 230° 240°
3/4" Copper 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 1 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 958-3

Hot Water
Nom. Tube Size Water Rate GPM 150° 160° 170° 180° 190° 200° 210° 220° 230° 240°
1° CPR 4 580 700 800 910 1,010 1,120 1,230 1,340 1,450 1,550
  1 550 660 760 860 960 1,060 1,160 1,270 1,370 1,470
  • 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 4 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 958-4

Hot Water
Nom. Tube Size Water Rate GPM 150° 160° 170° 180° 190° 200° 210° 220° 230° 240°
1-1/4" IPS Steel 4 440 520 590 670 730 800 880 950 1,030 1,040
  1 420 490 560 630 690 760 830 900 970 1,100
  • Painted Steel, Steam BTUH 890, Sq. Ft./Hr. 3.71
  • 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 958-5

Hot Water
Nom. Tube Size Water Rate GPM 150° 160° 170° 180° 190° 200° 210° 220° 230° 240°
1-1/4" CPR 4 560 660 760 870 960 1,070 1,170 1,270 1,370 1,480
  1 530 620 720 820 910 1,010 1,110 1,200 1,300 1,400
  • Alum. Natural Finish, Steam BTUH 1240, Sq. Ft./Hr. 5.17
  • 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 5 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.

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 rating at 1 GPM by the factor shown for the calculated flow rate.

Technical Information

Part # Model/Product Name Description Length (ft.) Weight (lbs/ft.) Pieces/Carton Pieces/Skid
66005 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
3 3.5 1 50
66010 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
4 3.5 1 50
66015 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
5 3.5 1 50
66020 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
6 3.5 1 50
66025 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
7 3.5 1 50
66030 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
8 3.5 1 50
66035 Hi-Output 958 Complete Baseboard complete with 3/4" element with 2-1/2" x 3-1/4" aluminum fins and cover
(end caps not included)
10 3.5 1 50
66040 Hi-Output 958 Cover Only Baseboard cover/enclosure only 2 2 1  
66045 Hi-Output 958 Cover Only Baseboard cover/enclosure only 3 2 1  
66050 Hi-Output 958 Cover Only Baseboard cover/enclosure only 4 2 1  
66055 Hi-Output 958 Cover Only Baseboard cover/enclosure only 5 2 1  
66060 Hi-Output 958 Cover Only Baseboard cover/enclosure only 6 2 1  
66065 Hi-Output 958 Cover Only Baseboard cover/enclosure only 7 2 1  
66070 Hi-Output 958 Cover Only Baseboard cover/enclosure only 8 2 1  
66075 Hi-Output 958 Cover Only Baseboard cover/enclosure only 10 2 1  
64100 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 2 1 4  
64102 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 3 1 4  
64105 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 4 1 4  
64107 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 5 1 4  
64108 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 6 1 4  
64110 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 7 1 4  
64112 Hi-Output 958 Element Only 3/4" Copper tube with 2-1/2" X 3-1/4" aluminum fins 958-2 (STD) 8 1 4  
64115 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 2 1 1  
64117 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 3 1 1  
64120 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 4 1 1  
64122 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 5 1 1  
64125 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 6 1 1  
64127 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 7 1 1  
64130 Hi-Output 958 Element Only 1" Copper tube with 2-3/4" X 3-1/4" aluminum fins 958-3 (STD) 8 1 1  
641325 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 2 5 1  
64133 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 3 5 1  
64136 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 4 5 1  
64141 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 5 5 1  
64143 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 6 5 1  
64146 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 7 5 1  
64148 Hi-Output 958 Element Only 1-1/4" Steel tube with 3" X 3-1/4" steel fins 958-4 (STD) 8 5 1  
64132 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 2 1 1  
64135 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 3 1 1  
64137 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 4 1 1  
64140 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 5 1 1  
64142 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 6 1 1  
64145 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 7 1 1  
64147 Hi-Output 958 Element Only 1-1/4" Copper tube with 3" X 3-1/4" aluminum fins 958-5 (STD) 8 1 1
  • Note: All element models are natural finish