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Figure 6.20 Fix galvanised mild steel strap to hold pipe/cable Figure 6.21 Wedge the pipe cable end into the stud • Wedge the pipe cable end into the stud in readiness for connection to the indoor unit (Figure 6.21) – use a lightly-fixed and wedged nail that can easily be removed to hold the pipe/cable flat for interior lining fixing. • Braze pipe ends closed to keep moisture and debris out (Figure 6.22). Figure 6.22 Braze pipe ends closed Outdoor unit location • Notch the top plate and studs sufficiently to insert pipe/cable. See Figure 4.12 (page 25) for limits on notching and drilling framing. • Insert pipe/connection cable and power cable (run from meter board) into notches and fix galvanised mild steel strap over to hold securely in position (Figure 6.23). Figure 6.23 Fix galvanised mild steel Figure 6.24 Feed pipe/cables through strap to hold pipe/connection cable building wrap Figure 6.25 Seal pipes or sleeve • Feed pipe/cables for connection to outdoor unit through a hole cut in building wrap (Figure 6.24). Installing a sleeve is recommended as shown in Figure 7.4. • Seal pipes or sleeve with flexible flashing tape to weatherproof around pipework and cables (Figure 6.25). • Braze pipe ends closed to keep moisture and debris out. • Leave pipe/cable neatly coiled and taped. Note that the taping off has not been completed in this figure nor has a sleeve been used as shown in Figure 7.4. • For floor-mounted units on internal walls: – fix pipe/cable in notched dwangs – drill holes and feed the drainage pipe through. • Feed drainage pipe through a hole in the building wrap to outside and seal to weatherproof around pipe. Do not cut out more timber than necessary. 33PDF Image | Heat pump installation Good Practice Guide
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