Technical Specifications

I=B=R Approved
end cap
A one-piece accessory, 3 inches
wide; slips in over top of back panel
and snaps firmly to bottom of front
panel; adjustable end provides
clearance for piping connections.
valve enclosure
A one-piece accessory, available
in 4” width; slides behind
enclosure back panel and snaps
securely into place at bottom of
enclosure front panel; telescopes
for adjustable end clearance.
outside corners
Two outside corners are
available: a 90° corner, and a
135° corner for use under
bay windows.
inside corners
Two inside corners are available: a
90° corner, and a 135° plain
corner for use under bay
windows.
joiner or filler piece sets
Consists of front piece, back
piece, and damper piece;
available in 2", 7" and 14"
widths.
3" wall end piece
A one-piece accessory that can be
used on either end of an
enclosure panel; hooks in over top
of back panel and snaps firmly to
bottom of front panel; extends to
floor surface.
nApproved I=B=R water ratings shown for HEATRIM/AMERICAN Panels (with Model E-500
element) are based on a water flow of 500 pounds per hour with a pressure drop of 0.260
inches of water per lineal foot and a water flow rate of 2000 pounds per hour with a
pressure drop of 2.900 inches of water per lineal foot. As allowed by the Institute of Boiler
and Radiator Manufacturers (I=B=R) Testing and Rating Code for Baseboard Type of
Radiation, 15% is added to water heat capacity.
The use of I=B=R ratings at water flow rates of 2000 pounds per hour is limited to
installation where the water flow rate through the baseboard unit is equal to or greater than
2000 pounds per hour. Where the water flow rate through the baseboard is not known, the
I=B=R rating at the standard water flow of 500 pounds per hour must be used.
†Approved I = B = R water ratings shown for HEATRIM/AMERICAN Panels (with Model E-
750 element) are based on a water flow of 500 pounds per hour with a pressure drop of
0.047 inches of water per lineal foot and a water flow of 2000 pounds per hour with a
pressure drop of 0.530 inches of water per lineal foot. As allowed by the Institute of Boiler
and Radiator Manufacturers (I=B=R) Testing and Rating Code for Baseboard Type of
Radiation, 15% is added to water heat capacity.
These ratings are based on active (finned) HEATRIM lengths. Difference between active
length and total length of the standard HEATRIM heating elements is 4 3/4 inches. Elements
are unpainted.
Non-ferrous fins on elements measure 2 1/8 x 2 1/8 x 0.008 inches, spaced:
HB-500, 50.5-52 fins per foot
HB 750, 49.9-52 fins per foot
Ratings
WATER
RATE
GPM
4
1
4
1
WATER
FLOW RATE
LB./HR.
2000
500
2000
500
COPPER
TUBE
SIZE
1/2"
Nominal
3/4"
Nominal
140°
340
330
330
310
150°
410
390
390
370
160°
480
450
450
430
170°
550
520
530
500
180°
610
580
590
560
190°
690
650
670
630
200°
750
710
730
690
210°
820
780
800
760
220°
900
850
870
820
HOT WATER - BTU/HR./LIN. FT.
MODEL
HB-500

HB-750
†