Rointe RD SERIES User manual
RD SERIES
Digital Electric Water Heater
Wall-hung Unvented
INSTALLATION
MANUAL
02
WELCOME
Dear Customer,
Thank you for choosing the RD Series electric water heater, with an exclusive electronic temperature
programmer and made with the highest quality materials.
The RD Series water heaters have exceeded the most stringent quality controls in order to comply
with the most rigorous requirements for safety.
Thanks to its exclusive ROINTE Optimizer Energy Plus technology, the electric water heater achieves
the maximum energy saving.
Before using the electric water heater we recommend you read this manual carefully in order to
obtain proper operating information.
IMPORTANT
THIS MANUAL SHOULD BE LEFT WITH THE UNIT AFTER INSTALLATION
03
TABLE OF CONTENTS
1. Introduction ......................................................................................................................................... 04
2. Technical Specifications ..................................................................................................................... 04
3. General Requirements ....................................................................................................................... 05
4. Plumbing Installation ......................................................................................................................... 06
5. Electrical Installation .......................................................................................................................... 10
6. Filling and Commissioning ................................................................................................................. 11
7. Servicing and Maintenance ................................................................................................................. 11
8. Fault Finding ....................................................................................................................................... 12
9. User Instructions ................................................................................................................................ 13
10. Guarantee .......................................................................................................................................... 16
11. Installation, Commissioning and Service Record ............................................................................ 17
04
1. INTRODUCTION
The “RD Series” is a high quality unvented enamelled steel domestic hot water cylinder suitable for
domestic hot water systems where the cold mains water supply has a maximum supply pressure
of 0.9 MPa. Reduced performance is available at lower pressures but the units are not suitable for
pressures lower than 0.15 MPa and flow rate of 20 litres per minute.
Rointe offers the possibility to acquire all the necessary safety equipment to comply with legislation
governing the installation of such systems.
2. TECHNICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
INSTALLATION KIT (OPTIONAL)
PERFORMANCE
2.1. Component Check List
The RD SERIES water heater comes with the following components, please check through the
components supplied and ensure that all parts are present:
• Water Heater with sheathed heating elements, digital thermostat
and manual reset thermal cut-out
• T/P valve 0.7 MPa 90ºC
• Installation and user manual
Please contact our customer service department to know how to acquire the safety fittings.
05
3. GENERAL REqUIREMENTS
3.1. The RD SERIES domestic hot water cylinder MUST be installed by a competent person in
accordance with section G3 of the current Building Regulations.
3.2. Important - It is important that the installer reads and understands these instructions,
unpacks and familiarises themselves with the equipment before commencing the installation.
Failure to observe these installation instructions could invalidate the warranty.
3.3. Water supply – The water supply to the cylinder should be potable water direct from a public
mains water supply with any water treatment equipment functioning correctly.
For optimum performance the unit should be fed via a 15 mm or 22 mm diameter supply pipe
direct from the mains water entry point to the property with supplies a maximum pressure of
0.9 MPa. The unit can operate with a minimum supply pressure of 0.15 MPa and a flow rate of
at least 20 litres per minute, but flow from the outlets will be low if several outlets are used
simultaneously. The cylinder control equipment is factory set to limit the system operating
pressure to 0.3 MPa. The maximum supply pressure into the pressure-reducing valve is 0.9 MPa.
3.4. Taps and fittings - All taps and fittings incorporated in the unvented system should have a
rated operating pressure of 0.7 MPa or above.
3.5. Location – The unit is designed to be vertically wall mounted, indoors, in a frost-free
environment. When choosing a suitable location for the cylinder, consideration should be given
to the routing of the discharge pipe to a convenient point and also the availability of an adequate
power supply for connecting the sheathed heating elements.
The wall onto which the cylinder is mounted should
be of good sound masonry construction capable of
holding the weight of the cylinder when full of water
(see
technical specifications
for weights).
The position of the cylinder should be such that easy
access is provided for servicing the controls and
replacing the sheathed heating element should the
need arise.
Pipe runs should be made as short as possible and
lagged to prevent heat loss.
To allow for servicing and repairs the unit must be
mounted at least 540 mm above any surface or object,
so that access can be gained to electric connectors
and the heating elements may be removed.
The unit should be mounted close to an external wall
so that the discharge pipe D2 can be routed to a safe
visible place.
The tundish should be mounted in a visible location
so that it may easily be inspected. Fig 1 - Minimum margins for servicing and repairs.
150 mm
100 mm 100 mm
540 mm
06
The distance between holes for the wall mounting depends on the model, see the following table
for reference:
Model RDI050 RDI075 RDI100 RDI150 RDI200
Horizontal width between holes 350 mm 350 mm 350 mm 350 mm 350 mm
Height between upper and lower holes 340 mm 573 mm 768 mm 490 mm 670 mm
3.6. Storage and handling – If the cylinder is not being installed immediately, it should remain
in its carton with all pipe end protective caps in situ to prevent damage. We recommend that the
cylinder be transported to its installation position with the outer carton in place.
3.7. Pipework connections – All Pipework connections to the cylinder MUST be made in
accordance with Fig1.
3.8. Safety – This product is not intended to be used by persons (including children) with reduced
physical, sensory, or mental capacities, or have no experience or knowledge of the product, except
if they are supervised or instructed in the use of the product by a person who is responsible for
his or her safety. Children must be supervised at all times to ensure that they do not play with
the product.
4. PLUMBING INSTALLATION
4.1. Connections. Connections MUST be made to the cylinder in accordance with Fig 1, and Fig
2. A drain cock (not supplied) should be fitted in the position shown in Fig 1 to facilitate draining
of the cylinder.
4.2. Cold water supply – For best results, the cylinder should be fed by an uninterrupted supply
pipe into the pressure reducing valve (PRV) with a maximum supply pressure of 0.9 MPa. The
cylinder should not be used on any system with a supply pressure below 0.15 MPa and a flow rate
of less than 20 litres per minute.
4.3. Temperature and pressure relief valve – The temperature and pressure relief valve (T/P
Valve) is supplied. Once the T/P valve is fitted should not be removed from the cylinder or
tampered with in any way. The valve is pre calibrated to lift at 0.7 MPa or 90 degrees centigrade
and any attempt to adjust it will invalidate the warranty and could affect the safety performance
of the unit.
The outlet of the T/P valve should be routed in 15mm copper piping in a downward direction
alongside the water heating unit to the tundish in a frost-free environment. The outlet of the
expansion relief valve must be T’d into this pipe before the tundish so that any water exiting either
valve can be seen draining through the tundish– see figure 2
4.4. Pressure reducing valve – The pressure reducing valve should be installed in the cold water
supply to the water heating unit with the arrow pointing in the direction of water flow as shown in
figure 2. This can be connected to a maximum supply pressure of 0.9 MPa.
4.5 Expansion relief valve – This must be installed between the pressure reducing valve and the
water heating unit in accordance with Figure 2. No other valve should be fitted between this valve
and the cylinder. The expansion relief valve contains a non return valve.
4.6. Expansion vessel – A suitable expansion vessel with a pre-charge pressure of 0.15 or 0.3
MPa is available in an optional kit for fitting to all water heating units in the range. The expansion
07
vessel MUST be fitted to the safety group. The expansion vessel MUST be positioned with the
entry point at the bottom – see Figure 2.
IMPORTANT: Regular checks must be carried out to ensure that the expansion vessel is correctly
pressurised to 0.15 or 0.3 MPa at all times. – see Figure 2.
4.7. Tundish – The tundish must not be positioned above or in close proximity of any electrical
current carrying devices or wiring. The installation should conform with the requirements of item
4.9 below.
4.8 Connection arrangement for RD Series Cylinder
Water Flow
To taps
Cold water
Inlet
Hot water
Outlet
12
5
3
4
300 MIN
100 MAX
6
9
87
10
1Mains cold water supply
2Stop cock (not supplied)
3Pressure reducing valve *
4Check valve *
5Expansion relief valve *
6Discharge pipe 22 mm
7Drain cock (not supplied)
8Tundish *
9Expansion vessel *
10 T/P relief valve (included)
* Available in optional Installation Kit
Figure 2
08
4.9. Discharge arrangement.
The tundish must be installed in a position so that it is clearly visible by the user. In addition,
the discharge pipe from the Tundish should terminate in a safe place where there is no risk to
persons in the vicinity of the discharge, be of metal and:
(a) Be at least one pipe size larger than the normal outlet size of the safety device unless its total
equipment hydraulic resistance exceeds that of a straight pipe 9 m long, i.e. discharge pipes
between 9 m and 18 m equivalent resistance length should be at least two sizes larger then the
normal outlet size of the safety device, between 18 m and 27 m at least three sizes larger and so
on. Bends must be taken into account in calculating the flow resistance. Refer to the diagram,
tables and worked example detailed below.
(b) Have a vertical section of pipe at least 300 mm long below the Tundish before any elbows or
bends in the Pipework.
(c) Be installed with a continuous fall
(d) Have discharges visible at both Tundish and the final point of discharge, but where this is not
possible or practically difficult, examples of acceptable discharge arrangements are:
• Ideally below a fixed grating and above the water seal in a trapped gully
• Downward discharge at low level, i.e. up to 100 mm above external surfaces such as car
parks, hard standings, grassed areas, etc. are acceptable providing that where children play or
otherwise come into contact with discharges, a wire cage or similar guard is positioned to prevent
contact whilst maintaining visibility.
• Discharge at high level, e.g. into a metal hopper and metal down pipe with the end of the
discharge pipe clearly visible (Tundish visible or not) or onto a roof capable of withstanding high
temperature discharges of water and 3 m from any plastic guttering system that would collect
such discharges (Tundish visible).
• Where a single pipe serves a
number of discharges such as in blocks
of flats, the number served should be
limited to not more than six systems
so that any installation discharging
can be traced reasonably easily. The
single common discharge pipe should
be at least one pipe size larger than the
largest individual discharge pipe to be
connected. If unvented hot water storage
systems are installed where discharges
from safety devices may not be apparent
i.e. in dwellings occupied by blind, or
disabled people, consideration should be
given to the installation of an electrically
operated device to warn when discharge
takes place.
Warning Notice – The discharge will
consist of scalding water and steam.
Asphalt, roofing felt and non-metallic
rainwater goods may be damaged by Figure 3 - Typical discharge pipe arrangement.
TUNDISH
SAFETY
DEVICE
500mm MIN
300mm MIN
Metal discharge pipe from
temperature relief valve to tundish
Safety device (Eg: Temp relief valve)
Discharge below fixed grating
Fixed Grating
Trapped Gullley
Metal discharge pipe from Tundish
with continuous fall.
09
such discharges.
SIZING OF COPPER DISCHARGE PIPE “D2” FOR COMMON TEMPERATURE RELIEF VALVE OUTLET SIZES
Worked example
The example below is for a �”diameter temperature relief valve with a discharge pipe (D2) having
4 22mm elbows and a length of 7 m from the tundish to the point of discharge.
The maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from
a �”diameter temperature relief valve is: 9.0 m.
Subtract the resistance for 4 No 22mm elbows at 0.8 m each = 3.2 m.
Therefore, the maximum permitted length equates to: 5.8 m.
5.8 m is less than the actual length of 7 m, therefore, calculate the next largest size.
Maximum resistance allowed for a straight length of 28mm pipe (D2) from a �”diameter
temperature relief valve equates to: 18 m.
Subtract the resistance for 4 No 28mm elbows at 1.0 each = 4 m.
Therefore the maximum permitted length equates to 14 m.
As the actual length is 7 m, a 28mm diameter copper pipe will be satisfactory.
10
5. ELECTRICAL INSTALLATION
WARNING: THIS EQUIPMENT MUST BE EARTHED.
All electrical wiring must be carried out by a competent person and in accordance with the current
I.E.E. Wiring Regulations. All pipework should be earthed!
5.1. The sheathed heating elements - Two parallel 1.2 or 1.5kW 230v 50Hz sheathed heating
elements are pre fitted to the cylinder at the factory. They are wired in accordance with the
instructions given in Figure 4.
5.2. Wiring diagram
a) The power supply to the heater must be via a double pole isolator switch or controller, having
contact separation of at least 3 mm, using 1.5 mm sq. flexible cable, to comply with BS 6141 and
must be fully earthed. In case of an electric problem, check that the wiring follows the diagram
below:
i. The Earth wire is connected to the terminal on the cylinder marked with the earth symbol.
ii. The Live wire is connected to the high temperature cut-out terminal
ii. The Neutral wire is connected to the high temperature cut-out terminal
Figure 4
WARNING: DO NOT SWITCH ON THE ELECTRICITY SUPPLY UNTIL INSTRUCTED TO DO SO IN THE
COMMISSIONING PROCEDURE AND ONCE THE UNIT IS FULL OF WATER.
11
6. FILLING AND COMMISSIONING
6.1. Check that the expansion vessel charge pressure is 0.15 or 0.3 MPa.
6.2. Check that all water and electric connections are correctly configured.
6.3. Open the main stopcock and fill the unit. Open successive hot taps starting with the tap
furthest from the heater. Leave each tap open for a few moments to allow all air and debris from
the system to exit. Close all of the taps.
6.4. Turn off the mains water supply to the cylinder and drain the system through the drain cock.
6.5. Refill the cylinder with hot taps open and close when water flows freely.
6.6. Manually lift (by rotating the knob) both the expansion relief and the temperature and
pressure relief valves for a short period to remove trapped air from behind the valve seating and
to check the correct function of the discharge arrangement.
6.7. Check all joints for leaks and rectify as necessary.
6.8. With the heater full of water, switch on the electricity supply. Check that the cylinder heats the
water and the thermostat operates. Turn on the hot taps to check that warm water is delivered.
6.9. Check that while the unit is heating up, no water exits from either the expansion relief valve
or the temperature and pressure relief valve. If water does exit through the valves check the
expansion vessel pressure and installation.
6.10. Increase the temperature to maximum and allow the unit to heat and the temperature to
stabilise. Check that no water discharges from the valves. Turn on the hot taps to drain the heater
of hot water. Set the thermostat to the required temperature and allow the heater to reheat ready
for use.
7. SERvICING AND MAINTENANCE
7.1. Servicing and maintenance must only be carried out by a competent unvented hot water
heater installer or by Rointe authorised personnel.
7.2. Before any work whatsoever is carried out on the installation, it MUST first be isolated from
the mains electricity supply.
7.3. Only use spare parts authorised by Rointe. The use of other parts will invalidate the warranty.
7.4. Drain the cylinder – When draining the cylinder, always switch off the water heater. Turn off
the water supply at the stopcock (see Fig 2). Connect a hosepipe to the drain cock (see Fig 2) and
route it to a convenient gully. Open the drain cock and all hot taps that are served by the cylinder.
The cylinder may take several minutes to empty completely.
7.5. In hard water areas it is necessary to replace the magnesium anode once a year.
7.6. Remove the cartridge from the pressure reducing valve. Check the strainer and if necessary
remove any debris from in front of it. Replace the cartridge.
12
7.7. Check the charge pressure in the expansion vessel and top up as necessary. The charge
pressure should be 0.15 or 0.3 MPa.
7.8. Close the drain cock, disconnect the hose, refit the heating element and close all hot water
taps before reopening the stopcock. Allow the cylinder time to fill whilst checking for any leaks.
Release any air from the system by opening each hot water tap individually, starting with the one
furthest from the cylinder.
7.9. Manually lift the expansion relief and temperature and pressure relief valve one at a
time, every 12 months (more frequently in hard water areas) to prevent debris from building
up behind the valve seat. Whilst carrying out this operation, check that the discharge to waste
is unobstructed. Check that each valve seals correctly when released. As the valves are pre-
calibrated, they require no further maintenance.
7.10. Finally, when the heater is full of water switch on the mains electricity supply to the water
heater. As the system heats up, check again for any leaks and rectify as necessary.
7.11. In the event of the manual reset cut-out operating, isolate the heater from the mains supply,
investigate and identify the cause of the operation of this cut-out, rectify the fault before manually
resetting the cut-out via the reset button on the cut-out. Finally switch the mains electricity
supply back on.
8. FAULT FINDING
Notice: Disconnect electrical supply before removing any electrical equipment cover.
FAULT POSSIBLE CAUSE REMEDY
No hot water
Water from hot taps is cold
Intermittent water discharge
through tundish on warm-up
Continuous water discharge
13
9. USER INSTRUCTIONS
9.1. Your RD Series unvented hot water cylinder has been designed to give many years of trouble
free service.
9.2. When a hot tap is turned on there may be a short surge of water, this is quite normal with
unvented systems and does not mean there is a fault.
9.3. When you first fill a basin the water may sometimes appear milky. This is due to very tiny air
bubbles in the water which will clear very quickly.
9.4. If water is seen dripping through the tundish at any time switch off the electricity supply
immediately and call the installer or the Rointe customer service department on the number
listed at the end of this guide.
9.5 Front panel description
The following image shows how the front panel of the water heater looks.
9.5.1 Front panel indicators
SECTION DESCRIPTION
9.5.2 Front panel touchpad
SECTION DESCRIPTION
14
9.6 Working the RD series Water Heater
The RD series water heater is set in the factory to Stand by. Due to this, for the heater to work
once installed press the ON button .
9.7 On and Stand-by
When you press a beep will sound and the indicators will toggle between on and stand-by. In
stand-by mode the LED indicator will be brightly lit. When the heater is on, the indicator show
that the RD series water heater is on.
NOTE: When the RD series water heater is on “Stand By”, it is still connected to the electricity
supply, but won’t have any active operation.
9.8 Setting the temperature
We can set the temperature by pressing the buttons and .
When pressing the button , the temperature setting is increased.
You will hear a beep and the LED will light up the display starting from the left at anti-frost
( ) and advancing to the right (80ºC).
The temperatures that can be set and seen on the display are shown in the following table:
DISPLAY TEMPERATURE
In order to decrease the set temperature, press the button and you will hear a beep. The LED
will switch off starting from the right (80ºC) and finishing on the left in anti-frost mode ( ).
The temperature is controlled using the Rointe Optimizer Energy Plus that activates and
deactivates the electric current passing through the heater element in order to efficiently heat
the water in the heater and the heater in use LED lights up .
15
9.9 Programme
When the indicator is on indicates that the Rointe RD Series water heater has been programmed
using the M Series Remote Control. Please refer to its manual for further reference about how
to programme the Rointe Digital System.
9.10 Anti legionnaire’s disease
Our RD Series is designed with safety in mind, and all the anti legionnaires’ disease regulations
are complied with. Each day the water heater is automatically set to its maximum temperature
for an hour, whilst this mode is active you will se the 80ºC temperature led blinking.
9.11 Optimizer Energy Plus
This product includes Optimizer Energy Plus technology to efficiently manage the energy
consumption of the water heater.
9.12 Fault Warnings
During normal equipment use, without any intervention by the user it is possible to detect faults
which are shown using the LEDs.
9.12.1 Temperature probe failure
When the temperature probe fails, the temperature setting LEDs flash every
half a second.
9.12.2 Electronic circuit failure
When an element fails, the heater in use LED flashes every half a second.
16
10. GUARANTEE
10.1. Rointe guarantee all electrical and mechanical controls supplied with the cylinder for
a period of 2 years from the date of purchase provided that they have been installed for their
intended use by a competent person and have not been modified in any way.
10.2. In addition Rointe also guarantees the hot water cylinder for a period of 5 years from the
date of purchase against faulty material or manufacture provided that:
a) It has been installed by a competent person in accordance with this installation manual
and all current regulations and codes of practice at the time of installation.
b) It has been used solely for the purpose of heating potable water that complies with
current (at the time of installation) UK standards and is not fed with water from a private
source.
c) It has not been modified in any way.
d) It has not been subjected to excessive pressure or electrolytic action from dissimilar
materials, or attack from any salt deposits.
e) It has been installed indoors in a frost-free environment.
f) The warranty card is completed and returned to Rointe within 90 days of installation.
This warranty is not transferable. This warranty does not include claims due to frost or lime scale
damage. Proof of purchase will be required against any claim. This guarantee does not affect
your statutory rights.
For help about the RD Series please contact the Rointe Customer Services Department:
Tlf: 0845 604 5987
Fax: 0208 953 586111.
European Directive 2002/96/EC
Under the European Directive 2002/96/EC on waste electrical and electronic equipment (WEEE), the
apparatus cannot be disposed in the usual council bins and containers. They must be separated to
optimize the recovery and recycling of all of the components and materials and reducing the impact
to human health and the environment. The symbol of the container crossed out over a horizontal
line marks all of ROINTE’s products to remind the consumer of the obligation to separate them on
disposal.The consumer should contact the local authority or original point of sale to learn more about
the correct disposal of this product.
17
DIMENSIONS AND TECHNICAL CHARACTERISTICS
REFERENCE RDI050 RDI075 RDI100 RDI150 RDI200
CAPACITY (L) 50 75 100 150 200
POWER (W) 230 V~ 2,400 2,400 2,400 3,000 3,000
HEATING ELEMENTS 2 x 1,200 W 2 x 1,200 W 2 x 1,200 W 2 x 1,500 W 2 x 1,500 W
THERMAL LOSS kW in 24h.
at 65°C 1,1 1,2 1,4 1,9 2,3
PLACEMENT Vertical Vertical Vertical Vertical Vertical
WATER INTAKE (inches) 1/2” 1/2” 1/2” 3/4" 3/4"
WEIGHT (kg) 18 25 32 44 56
DIMENSIONS (mm)
A640 860 1.100 900 1.070
B680 925 1.170 960 1.120
C404 404 404 580 580
D404 404 404 580 580
E420 420 420 620 620
F120 120 120 178 178
G340 573 768 490 670
H215 230 275 355 355
I555 803 1.043 845 1.025
J160 160 160 235 235
K350 350 350 350 350
EAN CODE 8436045910585 8436045910592 8436045910608 8436045911254 8436045911261
18
11. INSTALLATION, COMMISSIONING AND SERvICE RECORD
CUSTOMER DETAILS
NAME
ADDRESS
TEL No.
INSTALLER DETAILS
COMPANY NAME DATE
ADDRESS
TEL No.
INSTALLER NAME REGISTRATION No.
COMMISSIONING ENGINEER (IF DIFFERENT)
COMPANY NAME DATE
ADDRESS
TEL No.
INSTALLER NAME REGISTRATION No.
CYLINDER DETAILS
MODEL
CAPACITY (litres) SERIAL NO.
19
SERVICE RECORD DETAILS
Before completing the appropriate Service Interval Record below, please ensure you have carried
out the service as described in the manufacturer’s instructions and in compliance with all relevant
codes of practice.
It is recommended that your hot water system is serviced regularly and that your service engineer
completes the appropriate Service Interval Record below.
SERVICE 1 DATE: SERVICE 2 DATE:
SERVICE ENGINEER SERVICE ENGINEER
TEL NO. TEL NO.
REGISTRATION NO. REGISTRATION NO.
SIGNATURE SIGNATURE
SERVICE 3 DATE: SERVICE 4 DATE:
SERVICE ENGINEER SERVICE ENGINEER
TEL NO. TEL NO.
REGISTRATION NO. REGISTRATION NO.
SIGNATURE SIGNATURE
SERVICE 5 DATE: SERVICE 6 DATE:
SERVICE ENGINEER SERVICE ENGINEER
TEL NO. TEL NO.
REGISTRATION NO. REGISTRATION NO.
SIGNATURE SIGNATURE
SERVICE 7 DATE: SERVICE 8 DATE:
SERVICE ENGINEER SERVICE ENGINEER
TEL NO. TEL NO.
REGISTRATION NO. REGISTRATION NO.
SIGNATURE SIGNATURE
ROINTE UK
Catalyst House
720 Centennial Court
Centennial Park
Elstree, Herts, WD6 3SY.
CUSTOMER SERVICE
T. 0845 604 5987
FAX NUMBER
F. 0208 953 5861
e-mail: [email protected]
www.rointe.co.uk
MIRDI12V1
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