General Requirements - Heatrae Sadia PremierPlus PES170D Installation And User Manual

2.0 GENERAL REQUIREMENTS

2.1 COMPONENTS SUPPLIED
1. Premier Plus unvented solar water heater incorporating immersion heater(s) and thermal controls
2. Factory fitted temperature/pressure relief valve
3. Cold water combination valve.
4. Expansion vessel and mounting bracket.
5. Tundish.
6. Motorized valve (indirect models only).
7. Compression nuts and olives
8. Immersion heater key spanner
2.2 SITING THE UNIT
The Premier Plus Solar must be installed vertically. Although location is not critical, the following points should be
considered:
• The Premier Plus Solar should be sited to ensure minimum dead leg distances, particularly to the
point of most frequent use.
• Avoid siting where extreme cold temperatures will be experienced. All exposed pipe-work should be
insulated.
• The discharge pipe-work from the safety valves must have minimum fall of 1:200 from the unit and terminate
in a safe and visible position.
• Access to associated controls and immersion heaters should be possible to allow for periodic servicing and
maintenance.
• Ensure that the base chosen for the Premier Plus Solar is level and capable of permanently supporting
the weight when full of water (see Table 2)
2.3 OUTLET/TERMINAL FITTINGS (TAPS, ETC.)
The Premier Plus Solar can be used with most types of terminal fittings. It is advantageous in many mixer showers to
have balanced hot and cold water supplies. In these instances a balanced pressure cold water connection should be
placed between the cold water combination valve and the Premier Plus water heater. Outlets situated higher than
the PremierPlus Solar will give outlet pressures lower than that at the heater, a 10m height difference will result in
a 1 bar pressure reduction at the outlet.
2.4 LIMITATIONS
The Premier Plus unvented solar water heater should not be used in association with any of the following:
• Solid fuel boilers or any other boiler in which the energy input is not under effective thermostatic control
unless additional and appropriate safety measures are installed.
• Ascending spray type bidets or any other class 1 back syphonage risk requiring that a type A air gap be
employed.
• Steam heating plants unless additional and appropriate safety devices are installed.
• Situations where maintenance is likely to be neglected or safety devices tampered with.
• Water supplies that have either inadequate pressure or where the supply may be intermittent.
• Situations where it is not possible to safely pipe away any discharge from the safety valves.
• In areas where the water consistently contains a high proportion of solids, e.g. suspended matter that could
block the strainer, unless adequate filtration can be ensured.
The PremierPlus solar cylinder is to be used for the storage of wholesum water (max 250mg/l Chloride)
5