Fitting The Pre-Piping Frame; Water (Dhw) Connections - IDEAL istor HE260 Installation And Servicing

13 FITTING THE PRE-PIPING FRAME

1. Using the cardboard template mark the position of the
appliance and the fixing holes for the pre-piping frame.
2. Fasten the pre-piping frame to the floor.
Using suitable fixing screws and plugs dependant on the
floor material, fasten the pre-piping frame to the floor.
Take care not to pierce any underfloor piping or electrical
wiring.
Note.
Pipe runs to the service connections on the piping frame
must be from the front, back or below, and not cross the
side channels of the frame, where the appliance will slide
on and stand.
14

WATER (DHW) CONNECTIONS

Domestic Hot Water Connections
Refer to the Note in Frame 13, for guidance.
IMPORTANT
Do not subject any of the isolating valves to heat as the
seals may be damaged.
The PRV (pressure reducing valve) provided in the
hardware pack MUST be fitted in a convenient point on
the mains cold inlet to the appliance. Once fitted, a
pressure balanced cold feed to mixer taps and
showers may be taken downstream of the PRV but
before the istor appliance.
Note.
1. The PRV has a built in serviceable water filter. It
must therefore be located in a suitable place for
future maintenance.
2. It is pre-set to deliver water to the istor at 2 bar to
ensure safe operation of the DHW system.
To taps and
showers
Hot
Out
istor system store -
Installation and Servicing
INSTALLATION
Pressure balanced
cold feed to mixer
taps and showers
Cold
In
3. The pressure reducer can be installed with the
pipework either vertical or horizontal. However it
must not be installed upside down.
4. To obtain optimum DHW delivery from the
appliance all DHW pipes should be run in 22mm.
Pressure
Note.
reducing
When installing the PRV,
valve
consideration should be given to
the use of isolation valves either
side of the PRV for future
Mains
servicing and maintenance.
cold in
ist8339
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