Rheem RH-188 Series Instruction Manual page 12

Instant water heaters
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Installation
PLUMBING CONNECTIONS
COMPLETE THIS PROCESS BEFORE WIRING CON­
NECTION
CONNECTION PROCEDURE:
Connect the water supply to the inlet of the shower
via 15mm copper, stainless steel or plastic pipe using
a 15mm x 15mm elbow compression fitting.
Do not use excessive force when making these
connections.
FITTING THE STOP VALVE
Feed the Stop valve by screwing to the unit Inlet.
Note:
Ensure the supplied washers are in place before
connecting inlet and the Stop Valve.
Fit the other point of Stop Valve to the incoming water
supply.
Ensure that the backplate of the unit is flat on the wall
and positioned squarely. Tighten the fixing screws.
Turn on the water supply and check for leaks in the
pipework connection to the shower.
NOTE: At this stage no water can flow through the unit.
ELECTRICAL CONNECTION
WARNING: THIS UNIT MUST BE EARTHED.
SWITCH OFF THE ELECTRICITY SUPPLY.
The cable entry points are shown in the figure below.
Determine the cable entry to the unit.
a) Side entry - Poke the electrical cable through
the rubber grommet (Fig. 1 ).
or
b) Rear entry - Poke the electrical cable through the
rubber grommet (Fig. 2)
Route the cable into the shower unit and connect to the
terminal block (fig. 1) as follows:-
Earth cable to terminal marked
Neutral cable to terminal marked ' N '
Live cable to terminal marked
IMPORTANT: Fully tighten the terminal block screws
and ensure that no cable insulation is trapped under
the screws. Loose connections can result in cabling
overheating. DO NOT switch on the electricity
supply until the cover has been fitted.
•@'
' L '
11
Wall
0
Wire Entry
Side entry/ Fig. 1
Rear entry / Fig. 2

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This manual is also suitable for:

Rh-188-nRh-188-r1Rh-188-r2

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