AquaMAX EM50 Series - Manual (Page 23)

22
If a drain line discharges into a tundish, the drain line from the tundish must
be not less than DN20. The drain line from a tundish must meet the same
requirements as for a drain line from a relief valve.
Warning: As the function of the PTR valve on this water heater is to
discharge high temperature water under certain conditions, it is strongly
recommended the pipe work downstream of the relief valve be capable of
carrying water exceeding 93°C. Failure to observe this precaution may
result in damage to pipe work and property.
Safe Tray
Where damage to property can occur in the event of the water heater
leaking, the water heater must be installed in a safe tray. Construction,
installation and draining of a safe tray must comply with AS/NZS 3500.4
and all local codes and regulatory authority requirements. AS/NZS 3500.4
also has particular requirements when a safe tray must be installed.
Pipe sizes
To achieve true mains pressure operation, the cold water line to the water
heater should be the same size or larger than the hot water line from the
water heater.
Hot water system pipe work must be sized according to the individual
application by persons competent to do so. Reference to the technical
specifications of the water heater and local regulatory authority
requirements must be made.
Pipe Work Insulation
To reduce heat loss, the cold water line to and the hot water line from the
water heater must be insulated in accordance with the requirements of
AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if
exposed.
Saddling Pipe Work
To prevent damage to the storage cylinder when attaching pipe clips or
saddles to the water heater jacket, we recommend the use of self drilling
screws with a maximum length of 13mm. Should pre drilling be required,
extreme caution must be observed when penetrating the jacket of the water
heater. If the storage cylinder is damaged as a result of attaching pipe clips
or saddles to the jacket, any resultant faults will not be covered by the
Aquamax warranty.