Accessories- Electric Heat
Electric heaters are UL listed for duct installation. The UL label applies to the heater only, not the complete air handler.
Heaters are furnished as a separate section and are available with insulated or uninsulated casings. Controls such as contactors, fuses, etc., may be factory installed and wired in the heater section end panel provided the number of control steps is not excessive.
Remote control panels are also available.
Construction & Dimensions
Unit |
| Heater Dimensions (In.) | |
Size |
| H | W |
03 |
| 22 3/4 | 30 5/8 |
06 |
| 26 | 45 5/8 |
|
|
|
|
08 |
| 35 1/2 | 42 5/8 |
10 |
| 35 1/2 | 51 5/8 |
|
|
|
|
12 |
| 38 3/4 | 57 5/8 |
14 |
| 38 3/4 | 66 5/8 |
|
|
|
|
18 |
| 47 3/4 | 66 5/8 |
20 |
| 44 | 83 5/8 |
|
|
|
|
26 |
| 44 | 108 5/8 |
34 |
| 54 | 108 5/8 |
41 |
| 65 | 108 5/8 |
50 |
| 74 3/4 | 110 7/8 |
|
|
|
|
65 |
| 82 3/4 | 126 7/8 |
75 |
| 94 3/4 | 126 7/8 |
|
|
|
|
Notes: Heaters for constant volume units to have 35 W/in2 of wire surface maximum.
6
Y
1. Total KW Needed |
| |
Approximate KW = | CFM x TD (F) | |
| ||
3000 | ||
|
2. Number Of Steps Recommended
Rule of thumb for calculating the recommended number of steps required. Use Step A or B below, whichever is higher.
A. Number of Steps = |
| 300 x Total Heater KW | |
|
|
| |
|
| CFM | |
(Based on approx. 10°F. temp. rise per step) | |||
B. Number of Steps = |
| Total Heater KW | |
|
|
| |
Maximum KW per step | |||
