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9.1 SPECIAL COUPLING: 160,000 Btuh Model
NOTE: The joint of 1ST & 2ND tubes of 160,000 Btuh heaters experiences strong
forces of expansion. Follow instructions below for special coupling of the tubes.
160,000 Btuh MUST USE 20 FT PRIMARY TUBE KIT TK-P160-UL
DO NOT USE THE PRIMARY TUBE KIT DESIGNED FOR LESSER INPUTS
Follow instructions below for Special Coupling of the 1st & 2nd tubes.
TOOLS REQUIRED
Screw driver or similar tool with a shaft to aid in alignment of rivet holes in tubes
SPECIAL COUPLER INSTALLATION
1. Note the 2 holes opposite each other at the swaged end of the first tube (flanged)
2. Install the first tube with 2 holes (swaged end) at the 3 and 9 o'clock position, with the welded
seam located in the lower half of tube, facing downward
3. Slide the loosened tube coupler on to the first tube, past the swage
4. The second tube has a
5. Slide second tube over swaged end of first tube to align the hole in the second tube with one of
the holes in the first tube
6. Final alignment of the holes can be accomplished using a screw driver or other tool
7. IMPORTANT: Insert
8. Slide coupler into position – half onto each tube – covering the rivet head
9. Tighten coupler bolts to 40 ft-lb
10. Install reflectors - return to installation instructions Section 9
FIGURE 16 SPECIAL COUPLING: 160,000 Btuh - Connect 2nd Tube to 1st Tube -
Steps 1
& 2
Steps 3 to 6
¼
" hole at the female end.
¼
" rivet into the hole to secure the tube connection
Holes in swage of 1st tube:
locate at 3 and 9 o'clock
Welded seam in lower half of tube,
facing downward
Step 7
Steps 8 & 9
19
1/4" Rivet
UHE / EIH I&O Manual
RD: MAY 2013
IM100205
RL: 03D
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