Rinnai REI-NP Series User manual

REI-NP Series
REI-AP Series
REI-DP Series
(For SG and E2C Models)

Contents 2
Pages
Introduction ....................................................................................................
Important Safety Information ..........................................................................
Part Contents Checklist ..................................................................................
Parts Description ............................................................................................
Rain Shower Accessory Installation Guide .....................................................
Electrical Requirements .................................................................................
Water Requirements ......................................................................................
Installation ......................................................................................................
Fitting The Shower Set ...................................................................................
Commissioning ..............................................................................................
Operating The Shower ...................................................................................
User Maintenance ..........................................................................................
Troubleshooting .............................................................................................
Specification ..................................................................................................
3
4
5 - 6
7 - 9
10
11
12
13 - 14
15
16 - 17
18
19
20
21 - 23

Rinnai Instantaneous Water Heater
3
Rinnai
Instantaneous Water Heater.

Earthing Requirement:
The Earthing installation should be carried out in accordance with the local
Wiring Regulations.Where EARTHING of the premises is not evident, it is
neccessary to run an EARTH CONDUCTOR and solidly connect an earth
rod local to the installation. The following notes are for guidance only:
1.2.1 Select a damp place to bury the earth rod.
1.2.2 Connect earth conductor of minimum 2.5mm² (7/0.67mm) to the appliances
Earth ( ) terminal. Connect other end of the earth conductor to the earth rod.
1.2.3 Check to ensure earthing resistance is less than 100Ω. It may be neccessary
to drive two or more rods and connect them together to achieve a
satisfactory results.
1.2.4 Installation of earth rod must be carried out by a registered and certified wiring
contractor.
Ground surface
To Earth Connection point
To Earth Connection point
To Earth Connection point
Earth Rod
Ground surface Ground surface
at least 1m About 2m
THIS APPLIANCE MUST BE EARTHED, TO MAKE SURE EARTH
WIRE AND HEATER UNIT HAVE PROPER GROUNDING IN HOUSEHOLD.

Part Contents Checklist (For Unit C/W Normal Shower Accessories) 5
4 x Green Wall Plug & Screw Set
1 x Handshower
1 x Stop Valve
c/w 1 pc washer
1 x Shower Holder
Rail Support c/w
4 x White Wall Plug & Screw Set
1 x Sliding Rail
1 x Flexible Hose
c/w 2 pcs washer
1 x Rinnai Heater Unit

Part Contents Checklist (For Unit C/W Rain Shower Accessories) 6
4 x Green Wall Plug & Screw Set
1 x RS Shower Head
1 x RS Sliding Rail
1 x RS Rail Support
1 x RS Shower Holder
1 x Fix Plate
1 x 3 Way Diverter Valve
1 x Fix Plate
2 x Screw & White Wall Plug
1 x 5’ Flexible Hose
c/w 2 pcs washer
1 x 3’ Flexible Hose
c/w 2 pcs washer
1 x Rinnai Heater Unit
2 x Screw &
White Wall Plug
1 x Fix Plate
2 x Screw &
White Wall Plug
1 x Handshower
1 x Stop Valve
c/w 1 pc washer

Parts Description
Parts Description 6 Parts Description 7
1. Heater Cover
2. Power Control Knob
3. RCD Test Reset button (for RCD model only)
4. Stop Valve
5. Regulator Valve
6. Rail Support (2 Nos)
7. Handshower
8. Shower Holder
9. Flexible Hose
10. Sliding Rail
11. Pump Speed Control (for REI-AP / DP Series only)
8
6
7
10
4
5
2
1
3RESET
TEST
11
9

Parts Description
Parts Description 6 Parts Description (For Rain Shower Model Only) 8
1. RS Shower Head
2. RS Sliding Rail
3. RS Rail Support
4. RS Shower Holder
5. 3 Way Diverter Valve
6. 5’ Flexible Hose
7. 3’ Flexible Hose
1
2
3
4
5
6
7

Parts Description
Parts Description
Heating Element
Mounting Holes (4 Nos)
Terminal Block
Cable Entry
Thermostat
RCD Assembly (for RCD model only)
Heater Base
Back Light PCBa
Water Tank
Electronic Control
Triac
Flow Switch Assembly
Water Inlet
Water Outlet
Pump Speed Control
Pump Assembly (AC)
Board (AC)
Board (DC)
Pump Assembly
(DC)
Power
LED PCBa
1.
2.
3.
4.
5.
6.
7.
8.
9.
10
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
REI-NP Series REI-AP Series
REI-DP Series
9
13
4
11
8
12
13
2
5
7
9
20
20
14
1
3
4
7
19
11
12
13
5
6
9
2
14
63
4
2
8
16
11
13
5
7
1
9
17
14
10
6
10
12
8
10
1515
15
18
20
LVDC
PC - 2D

Parts Description
Rainshower Accessory Installation Guide 10
(Recommended)
(Recommended)
Rainshower(RS)
Rainshower(RS) 3 Way Diverter
Rainshower(RS) 3 Way Diverter.
Rainshower(RS) 3 Way Diverter
3 WAY DIVERTER VALVE
Secure the Fix Plate (2 units) with screws provided.
Secure the Rainshower(RS) Shower Head to Rainshower(RS) Sliding Rail as shown.
Secure Rainshower(RS) 3 Way Diverter to Rainshower(RS) Sliding Rail.
Note: Be sure to insert a washer before Handshower
& rubber washer provided between hose and
outlet of Rainshower(RS) 3 Way Diverter.
Rainshower assembly are ready for use.
element power and rainy season (decrease
in ambient temperature), the instant
water heater with Rain Shower maybe
running with higher water volume
compared to Hand Shower, hence not be
able to produce hot water to desired
temperature. Users are advised to either,
decrease the flow rate at stop valve or
lower down the Pump Speed Control
(for pump model).

Electrical Requirement
11
1)
2)
3)
4)
5)
6)
7)
Installation must be carried out by a qualified electrician.
The shower heater unit must be connected to its own independent electrical circuit.
Lead the power cable from the indoor fuse distributor board or Miniature Circuit Breaker (MCB) to a
10mA RCD and from RCD to ‘ON/OFF’ Double-Pole switch outside the bathroom.
Please refer to Bathroom General Wiring layout below.
The water heater must be permanently connected to the electricity supply through a double-pole linked
switch having a contact of separation of at least 3mm in all poles incorporated in fixed wiring.
This switch must be out of reach of a person using a shower.
The use of a plug and socket is not recommended.
Correct size of wire conductor corresponding to different electrical loading should be used.
(Refer cable size table below)
WARNING !
THIS APPLIANCE MUST BE EARTHED
Cable Sizes Table
Other
Electrical
Equipment
Double
Pole
Switch
BATHROOM
The installation of RCD with leakage
current sensitivity of 10mA in a wet area is
a statutory requirement under Regulation
36 (2), Electricity Regulation 1994.
Earth Bar Neutral Bar
RCD(100 mA)
RCD
(10mA)
Water
Heater
60A Main Switch
Voltage
(V~)
Country Power
(kW)
Amperes
(A)
Cable Size
(mm²)
Fuse / MCB
(A)
ON / OFF
Switch (A)
240V ~ 50Hz
230V ~ 50Hz 16 20
3.3
20 20
14.4
Myanmar
Philippines &
Vietnam
Thailand
220V ~ 50Hz 4.5 20.5 30 / 32 30 / 32
5.5 25.0 4.0 30 / 32
30 / 32
3.5 15.9 20 20
Malaysia
Singapore
Cambodia &
4.0
4.0
4.0
4.0

TEST
RESET
Water Requirements 12
Plumbing Schematic Diagram
An electric water heater can be fitted in
your home regardless of the type of plumbing
system as in most cases they can operate
directly off the main cold water supply.
Fig. shows a typical system layout. Do not
use jointing compounds on any pipe fittings
for the installation.
The Unit works at minimum water flow rate
of 2 litre/min.
SITING OF THE SHOWER
WARNING: The shower must not be
positioned where it will be subjected to
freezing conditions.
FOR EASE OF SERVICING, THE UNIT
MUST ALWAYS BE MOUNTED ON THE
SURFACE OF TILED WALLS. NEVER
TILE UP TO THE UNIT.
This product is splash-proof rated and is
approved for use in shower cubicles and
over baths.
However, do not install the unit in a position
where the sprayhead will consistently
direct water over it.
The shower unit MUST be positioned
vertically.
1.7m
Bathroom
Floor
Minimum
1.5 Meter
Isolating
Stop Valve
Main
Water
Supply
Cold water
cistem
Stop
Valve

Installation 13
FIXING THE SHOWER TO THE WALL
Important: The shower must be mounted on a
flat surface which covers the full width and
length of the backplate. It is important that the
wall surface is flat otherwise difficulty may be
encountered when fitting the cover and
subsequent.
1.1 Decide on a suitable position to allow for
cover fit and removal.
Determine the direction that you require the
inlet water supply and electrical cable to enter
the unit from.
Determine the height at which you require the
unit to be installed.
1.2 Unscrew the cover retaining screws
sufficient to remove the cover.
Note! The cover retaining screws are captive
and should remain in the case.
1.3 Remove the cover.
Mark the position of the unit on the wall. Mark
the positions of the fixing holes. Make sure
that sufficient electrical supply cable is
available for connection to the terminal block.
1.4 Drill the holes and insert the wall plugs
provided. Secure the heater unit to the wall
with the screws provided. Avoid drilling into
any supply cable/pipe.
Note! Hook the backplate over the top screws
and fit the lower fixing screw into position. DO
NOT fully tighten the screws at this stage, as
the fixing holes are elongated to allow for out
of square adjustment after the plumbing
connections have been completed.
Mount to wall
Screw x 4
Remove the Cover
Mark the mounting holes
Outlet Inlet

Installation 14
PLUMBING CONNECTIONS
COMPLETE THIS PROCESS BEFORE WIRING
CONNECTION
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
Fit the Stop valve (Warning: Conductive Valve shall not
be used) by secure 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.
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 ‘ L ’
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.
Wall
a
Fig. 1
Rear wire
entry

Fitting The Shower Set 15
FITTING THE HOSE AND SPRAY HEAD
Fit the flexible hose (Warning: Metallic /
Chromed Hose shall not be used) by
connecting to the unit outlet (Left side) and
handshower. Ensure the supplied
washer is in place at the outlet and the
washer at the handshower.
Place the handshower into the holder
and check that it fits correctly.
Important:
It is the conical end of the hose which
grips into the holder. The handshower
will not fit in the holder without the hose
attached.

Commissioning 16
The first operation of the shower is
intended to flush out any remaining unit
dirt particles, and to ensure the heater
unit contains water before the elements
are switched on.
This operation must be carried out with
the flexible hose screwed to the outlet but
without the sprayhead attached. Ensure
the outlet of the flexible hose is directed
to waste.
Turn ON the main water supply. Check if
any water leaks from the pipe line.
Secure the cover in position with screws.
DO NOT OVERTIGHTEN.
TESTING TEMPERATURE SETTING
Switch on the main electric supply to the
shower at the isolating switch.
The ON/OFF sign and Rinnai Logo
wording will light meaning the unit is ON.
Turn the knob clockwise to –sign, the –
and +sign will Light.
Turn the knob anti-clockwise to ; the
–and +sign will switch OFF again.
Continual turn of the knob clockwise, the
temperature of the water should rise
slightly.
Allow a few seconds for the warm water
to reach the handshower, this shows that
the power setting is operating correctly.
Set the shower temperature by rotating
the Knob as necessary. Turn the knob
clockwise for hotter water and anticlock-
wise to position for cooler water.
DO NOT switch on the electricity supply until the following procedure has been
completed and the cover has been fitted.
Check Any
Water Leak
ON

Commissioning 15
TESTING RCD
(For RCD model only)
Test the RCD by pressing the TEST
Button. The Rinnai and sign light will
turn OFF.
Press the RESET Button to switch ON
the unit again. This shows the RCD
should be in good condition.
Note!
If nothing happen when these button are
pressed, do not use the heater, and
contact your agent immediately.
Never attempt to repair the unit by yourself.
Fit the shower fittings. Once the riser rail
is fitted, the shower is ready for normal
use.
Turn ON the Pump Speed Control Knob
at the bottom left of the heater to test run
the pump. If the Shower is not hot
enough, adjust the speed knob slower to
reduce speed in order to get the
desired temperature. (For Pump Model
Only )
Commissioning 17
RESET
TEST

Commissioning 15
Operating The Shower 18
Important: Ensure the commissioning
procedure has been carried out.
To start the shower, turn the stop valve
handle anti-clockwise to allow water to flow
through the unit.
To stop the shower, turn the stop valve
handle clockwise back to the position
as shown in the figure.
CAUTION: Do Not Test the Stop Valve
under dry condition.
The built-in Pump can be independently
controlled by using the Pump Speed
Control Knob. In low pressure areas (below
15 p.s.i.) adjust pump speed to obtain
desired spray of water. If water pressure is
high (over 15 p.s.i) turn ‘OFF’ the Pump
Speed Control Knob in order to achieve
hotter shower. Note: It is recommended
that the pump should be operated at
intervals of 30 minutes with 30 minutes
rest.
To adjust the shower temperature
The shower temperature is altered by
increasing or decreasing the Power Control
via the Control knob.
To increase the shower temperature
Turn the Control Knob clockwise towards
the +sign; this will increase the water
temperature.
To decrease the shower temperature
Turn the Control Knob anti-clockwise
towards the –sign; this will decrease the
water temperature.
CAUTION: Be certain the showering
temperature is satisfactory by testing
with your hand before stepping under
the sprayhead. There will be always a
time delay of 10 to 15 seconds
between selecting a flow rate and the
water reaching the stable temperature
for that flow rate. It is recommended
that persons who may have difficulty
understanding or operating the
shower controls should not be left
unattended whilst showering. Special
consideration should be given to
young children and the less able
bodied.
ON
OFF
T
e
m
p
.
T
e
m
p
.

User Maintenance 19
CLEANING
NOTE: Do Not Use Thinner, Alcohol or
Petrol
Many household cleaners contain
abrasives and chemical substances, and
should not be used for cleaning plated or
plastic fittings. These finishes should be
cleaned with a mild washing up detergent
or soap solution, and then wiped dry
using a soft cloth.
FILTER MAINTENANCE
It is recommended that the filter is
periodically cleaned in order to maintain
the performance of the shower.
Remove the filter head from the stop
valve. Remove the Filter Net and clean it
using soft brush then wash it under
running water. Ensure all dirt paticles are
removed.
Fit it back after washing the filter.
TESTING RCD
(For RCD Model Only)
Test the RCD at least once a month.
Turn on the unit with electric power and
water supply.
Test the RCD by gently pressing TEST
button. The RCD should be automati-
cally tripped to OFF position. Press
RESET to turn the unit back on.
RESET
TEST

Troubleshooting 20
Fault / Symptom Cause Remedy
1. No shower coming out from the
heater.
1.1 Interrupted Water Supply Check whether the water supply is
available.
2. Heater not functioning
2.1 Interrupted Power Supply
Check if a main power cut. Check other
appliances and if necessary, contact the
local Electricity Supply Company.
3. Water too hot
Blocked sprayhead - clean or
replace sprayhead. Blocked filter –
see ‘filter maintenance’.
2.2 Insufficient water supply to
trigger flow switch
Heater requires minimum 2 litres/min
water flow rate.
2.3 Thermal Cut-Out has operated
2.4 Malfunctioning on Flow Switch
5.2 Faulty Triac
2.5 Electrical malfunction
Have the shower unit checked by a
competent electrician or contact
Customer Service.
4.2 Decrease in ambient
water temperature
Switch to higher power setting and
adjust the Pump speed knob
to reduce speed in order to
get on the desired temperature.
4.3 Electrical malfunction.
Have the shower unit checked by
a competent electrician or contact
Customer Service.
1.2 Incoming water supply stop
valves is turned off.
3.1 Not enough water flowing
through the Unit.
4. Water is not hot enough
Reduce the flow rate by Pump
Speed knob
4.1 Too much water flow.
Turn on stop valve.
3.2 Increase in ambient water
temperature.
Switch to lower power setting
and readjust flow rate to give the
required temperature.
1.3 Dirt particles blocking inlet /
outlet hole
Blocked sprayhead - clean or replace
sprayhead.
Blocked filter – see ‘filter maintenance’.
5. Water supply turn off but the
indicator light is still ON
Have the shower unit checked by a
competent electrician or contact
Customer Service.
5.1 Flow Switch malfunction
6. Motor tone increases 6.1 Interru
p
6.2 Faulty Pump Unit Wait for internal pump to cool
down. If still faulty contact
Customer Service.
See 1.1 and 3.1
ted Water Supply