Installation to comply with NZBC Clause G12 (2001) or NZS 4607:1989
- Valves must NOT be installed in ground.
- Valves must be installed in a position where reasonable access is provided for maintenance and/or replacement.
- Caution: do not apply heat near valves during installation.
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Drain Lines
- IMPORTANT: TAPS, VALVES OR OTHER SHUT-OFF DEVICES MUST NOT BE INSTALLED IN THE RELIEF OR EXPANSION DRAIN LINES.
- Drain line should be copper, they should fall continuously from the valve outlet and be of the shortest possible length.
- The discharge end of the drain line must be positioned so as any discharge will be visible, but not cause damage or a nuisance.
- Drain lines must not be smaller than the outlet of the valve to which they are connected.
- If relief valve drains are combined, a 25mm air gap must be maintained.
RECOMMENDED
- In frost areas fitting an EVT7.6 can protect cylinders in the event of exhaust pipe freezing
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