Installation - General Requirements - Heatrae Sadia HOTFLO Installation And User Instructions Manual

Diagram 4 Temperature/Pressure Relief Valve

2.0 INSTALLATION - GENERAL REQUIREMENTS:

2.1 National Wiring rules may contain restrictions concerning the installation of
these units in bathrooms.
2.2 The unit should be vertically wall mounted using the fixing points provided.
Alternatively it can be floor mounted on its base. The water connections must
always be to the top of the unit.
2.3 Enough space should be left at the top above the unit for pipe connections and
access to the Temperature/Pressure Relief Valve (if fitted). Refer to Diagram 5
and the Dimensions Table to determine a suitable position for the heater.
2.4 NOTE: Ensure that the wall can support the full weight of the unit (see TECHNI-
CAL SPECIFICATIONS) and that there are no hidden services (electricity, gas,
or water) below the surface of the wall.
2.5 The unit should be fixed to the wall using No. 12 screws into suitable wall plugs.
2.6 DO NOT install where the unit may freeze.
2.7 Refer to the section IMPORTANT INSTALLATION POINTS to determine which
valves and accessories are required. Plumb in the valves in the sequence shown in
the relevant Diagrams 1 to 4.
2.8 The water connections are 15mm diameter copper tubes suitable for compression
fittings. Do not use solder joints as this will damage the heater.
2.9 The INLET is marked BLUE, the OUTLET is marked RED. It is recommended
that a WBS Listed isolating valve be fitted on the cold water supply to the heater.
Several hot outlets can be served.
2.10 Plumbers Paste must not be used as it can impair the operation of the valves.
4
NOTE: The fitting of Pack U6 does not alter the requirements detailed in
Points 1.1 to 1.4 (Diagrams 1 to 3)