CGTH INSTALLATION, OPERATION AND SERVICE MANUAL
surface of the burner. Note this dimension here
________.
2.Using the tape measure, transfer this measure- ment to the inside surface of the exterior wall that the vent will penetrate; make a reference mark. Check the location of the hole to ensure that there are no internal wall structures (i.e. studs) to pre- vent penetration. Also check that the outlet of the vent does not compromise the general venting requirements, See Section 5.1.
3.Using a tape measure, measure distances ‘A’, ‘B’, ‘C’ and ‘D’ as shown in Figure 18. Note these dimensions here (A= ______, B= ______, C=______, D=______) and add them together.
NOTE: If the total of dimensions above are greater than 5' (1524 mm), a 5’ (1524 mm) balanced flue vent extension kit (P/N 08039000) will be required.
FIGURE 18: Horizontal Installation Top View
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| - Top View - |
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Optional Vent |
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Extension | D | C |
| 3" (80 mm) |
| B | |||
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Vent |
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| 5" (125 mm) |
Terminal |
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| A |
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| 6" (152 mm) |
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3" (80 mm) |
| Minimum |
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pipe is slid |
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through end |
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of terminal |
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| Heater |
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4.From the reference mark made in step 2, measure down vertically 1/4" (6 mm) per foot measured in step 3. Cut 5” (125 mm) vent terminal clearance hole at the lower reference.
5.Cut the 3” (80 mm) vent to length as follows: Length A
3” diameter = A – 8”
Length B
3” diameter = B + C + D – 7 3/4”
Always cut a
6.Wrap the 1" (2.5 cm) diameter spring around the outside diameter of the 3" (80 mm) elbow as shown in Figure 19.
FIGURE 19: Elbow Assembly End View
Interlock Loops |
as shown |
1" (25 mm) |
Diameter Spring |
3" (80 mm) |
Elbow |
7.Interlock the loops at each end of the spring coils together as shown in Figure 19. The loops will lock together to produce a continuous coil spring spacer around the outside diameter of the 3" (80 mm) elbow.
8.Fit the 5" (125 mm) elbow over the 3" (80 mm) elbow (Figure 20).
FIGURE 20: Elbow Assembly Cross Section View
5" (125 mm)
Diameter Elbow1" (25 mm) Diameter Spring
6" (152 mm)
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| 3" (80 mm) |
2.75" (57 mm) | Diameter Elbow | |
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