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E.3 Temperture High-Limit
1.
Remove discharge grille from heater. Remove clips
securing bulb and capillary to cabinet.
2.
Inside electrical enclosure, remove lock nut from
high-limit compression fitting and remove fitting
from enclosure.
3.
Remove compression nut from the fitting (see Figure
9). Remove seal from fitting. Remove fitting from
capillary.
4.
Remove high-limit switch from the enclosure.
5.
Replace high-limit with factory-supplied
replacement
high-limit.
6.
Reinstall high-limit switch to bracket in the control
enclosure.
7.
Slip capillary sleeve over capillary. Note: For 25 to 39
kW heaters, the sleeve must be cut to 8.25 in. (210
mm). For 15 and 20 kW heaters, the sleeve must be
cut to 14.125 in. (360 mm). For 3 to 10 kW heaters,
sleeve does not have to be cut to length.
8.
Slide lock nut over bulb and capillary. Insert bulb and
capillary through the enclosure opening.
9.
Place compression fitting body over capillary. Install
seal on capillary and insert seal into body of fitting
(see Figure 9).
F.
PARTS LIST
10
7
3
12
Figure 10
10
11
9
8
13
15
14
1
10.
Loosely install top nut onto compression seal body.
Secure fitting to enclosure with lock nut on the
inside of the enclosure. Tighten lock nut to ensure
watertight seal.
11.
Reinstall the bulb and capillary using the original
clips. Ensure the bulb is in the same position as the
previous high-limit. The bulb tip should be 3.94 in.
(100 mm) from the discharge edge of the cabinet.
12.
Tighten top nut on compression seal.
Figure 9
2
4
5
16
26
217.0
Wall Mount Bracket Detail
20
23
25
126.0
126.0
152.0
27
17
21
22
6
19
24
18
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