gledhill THP180 sol, Design, Installation & Servicing Instructions

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Page 12
INSTALLATION
INST
ALL
A
TION
General
• The Torrent HP is designed to be installed in an airing cupboard and the relevant
minimum dimensions are given in table 1 ‘Technical data’. Installation and
maintenance access is needed to the front and top of the appliance and this should
be considered when positioning the appliance in a cupboard.
The fl oor of the cupboard needs to be level and even and capable of supporting
the weight of the appliance when full (see table 1 for data on weights).
• All Torrent HP models are open vented and are suitable for use with any heat pump
which does not require minimum pressure in the primary water circuit for operation.
The open vented primary system (thermal store, heat pump and central heating
circuits) is fi lled via the feed and expansion cistern supplied with the unit. It is
therefore important that the cistern is positioned at the highest point in the system.
It is important to ensure that the minimum head for the heat pump and the system
pump is as required by the heat pump manufacturer.
• It is envisaged that the feed and expansion cistern will be located in the same
cupboard as the Torrent HP. However if it is necessary to locate the cistern in the
roof space or on a higher fl oor then it must not be fi tted more than 6 meters above
the base of the Torrent HP appliance.
If the feed and expansion cistern is installed in a roof space (or unheated part of
the dwelling), then any pipwork and the feed and expansion cistern will need to
be adequately insulated to protect against frost damage.
Please note: The feed and expansion tanks will not be large enough for all the
stores/systems listed in the manual. It will be necessary to couple two together or
replace with a larger tank in certain circumstances. We leave this to the installer to
calculate because we do not know the capacities of multi fuel boilers etc.
• The heat pump should be sited as per manufacturers instructions and piped to
the Torrent HP and the pipework should be sized for the fl ow rates recommended
by the manufacturer and in any case should not be less than 22mm.
• Combined cold feed and vent pipe arrangements must not be used and no valves
should be used in the safety open vent pipe which must be minimum of 22mm
copper pipe or equivalent.
• The overfl ow/warning pipe shall have a continuous fall, be fi tted to discharge clear
of the building and be sited so that any overfl ow can be easily observed. It shall also
be installed in a size and material suitable for use with heating feed and expansion
cisterns in accordance with BS 5449 and should not have any other connections to it.
• The system will require at least two power supplies which needs to be 230V
AC/50Hz/Single phase. One supply for the control circuit and one for the power
supply to the heat pump. Both electrical supplies must be correctly earthed,
polarised, correctly fused and in accordance with the latest addition of the IEE
requirements for the electrical installation BS7671. Connections to both the control
circuit and the heat pump (main power supply) must be made using a double
pole linked isolators with a contact separation of 3mm in both poles and which
are located within 1m of the respective appliance.
• All Torrent HP models are supplied with a 3kW (230V AC, 50Hz) immersion heater
which incorporates an adjustable control thermostat and a non-resetable over-heat
energy cut out set at about 85°C.
External wiring to the immersion heater must be in accordance with the relevant
IEE Wiring regulations and the circuit must be protected by a suitable fuse and a
double pole isolating switch.