Installation Manual

HE+ Series Infrared Gas Heater Installation and Operation Manual

SPECIAL COUPLING: INSTALLATION

1. Note the 2 holes opposite each other at the swaged end of the first and second tubes (225,000 -

250,000)

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 a loosened tube coupler on to the first tube, past the swage

4. The second tube has one single ¼” hole at the female end.

5. Slide second tube over swaged end of first tube to align the single hole in the second tube with

either of the holes in the first tube

6. Final alignment of the outer and inner holes can be accomplished using a screw driver or other

tool to align the edges of the holes

7. IMPORTANT: Insert ¼” stainless steel rivet into the hole to secure the tube connection

8. Slide coupler into position – half onto each tube – covering the rivet head

9. Tighten coupler bolts to 40 lb-ft

10. For inputs 225,000 - 250,000 repeat the connection process between the 2nd and 3rd tubes.

11. Install reflectors

9.2 SPECIAL TUBE COUPLING: 225,000 to 250,000 Btuh

NOTE: The joint of 1ST & 2ND tubes (225,000 - 250,000) experience strong forces of ex-

pansion. Follow instructions below for special coupling of the first few tubes in the system.

FIGURE 11 SPECIAL COUPLING: 225,000 to 250,000 Btuh

Steps 3 to 6

Step 7

Steps 8 & 9

1/4” Rivet

Welded seam in lower half

of tube, facing downward

Holes in swage of tube: locate at 3 and 9 o’clock

• 1st & 2nd Tubes (225,000 & 250,000)

Steps 1 & 2