Quantum 270-11AC3-134 - Manual (Page 8)

Owner’s Manual Quantum Energy Technologies
Document number: QDC0030PD-11 Page 8 of 40
3a.2: Corrosion Protection
Fittings and the Shell Surface in contact with the water are to be galvanically compatible. Sealants
and / or Teflon plumbing tape should be used on potentially galvanically incompatible fittings.
This is to protect against possible electrolytic corrosion between the metals (where moisture
penetration could occur due to incorrectly or poorly sealed fittings).
3b: Air Flow
The Compact and Split Air models extract the required heat from air being drawn through their Fin
Coil Evaporator. This produces cold exhaust air as a by-product. In order for the heaters to operate
efficiently, good ventilation of the proposed location for the Compact model or the Titan models
separate evaporator is required. This is to provide warm air as a heat source and to remove the cold
air being produced. The Compact therefore is best located externally, however a large double
garage (minimum of 120 cubic meters) may also be suitable. The Titans separate evaporator could
be located externally or in a large well-ventilated ceiling space or garage, however being a more
powerful system, more ventilation is required.
3c: Evaporator Drain
During operation considerable amounts of condensate water will flow from the evaporator drain. If
allowed to simply flow out of the outlet, this water may pool below the unit and can cause
problems to both the water heater and area around it. The evaporator drain on both the Compact
and Split Air units should be drained to a suitable location. This can be accomplished with a length
of hose or pipe but must not be connected directly to the PTR valve or expansion valve drain.
3d: Pressure & Temperature Relief Valve (PTR)
The Pressure and Temperature relief valve (see tank data plate for rating), which is supplied with
the unit, must be fitted and made accessible so that the release mechanism can be operated and, if
required, the valve replaced. The outlet of the PTR valve must be suitably drained to remove the
water discharged during the normal heating cycle. The valve thread is RP ½” / 15mm and must be
installed into the top front socket.
Warning: A separate drain line must be run for this relief valve. It is not permitted to couple the
drain lines from the relief valve and evaporator into a single common line. The use of a tundish
under the evaporator drain with this then connected to the drain of the PTR valve is acceptable.
3e: Expansion Control Valve (ECV)
Where an Expansion Control Valve is fitted to the cold water supply, the ECV should be rated at
150kPa lower than the Pressure & Temperature Relief valve (PTR). It is a State requirement for
SA & QLD that an ECV be fitted on the cold water supply line between the non- return valve
and the water heater.