Hyco Rho IN44 Specification sheet

Product Instruction Manual
Rho
Instantaneous Inline Water Heater
IN44, IN60
v23.10.6

Overview
Thank you for purchasing a Rho Instantaneous Inline Water Heater. Available in 4.4 and 6.0
kW models, to be used for hand washing at a single basin. Instantaneous water heaters are
energy ecient as they only consume energy when in use, so have no standing losses. The
IN44 and IN60 models are mains pressure and the bare wire heating systems oer rapid
heat up times and a near instant supply of hot water.
Conrm that the ow rate and temperature performance is adequate for your application
using the tables provided. This appliance is intended for use with spray head taps with
removable M22/ M24 nozzles. Not suitable for use with thermostatic mixing valves or taps
or to supply a single lever mixer tap.
Please read and follow these instructions to ensure that installation and operation are as
simple and safe as possible.
Important Safety Points
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This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
The appliance should only be installed and maintained by a competent person in
accordance with any local electrical and plumbing regulations.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualied persons in order to avoid a hazard.
The appliance must be permanently connected to the electrical supply through an
appropriately rated isolating switch with a separation in all poles.
Only connect the appliance to an electrical supply that meets the specication
detailed on the rating label.

The appliance must be earthed.
Only connect this appliance to a water supply that meets the min/ max pressures
specied in the specications section of this manual.
This appliance is intended to be permanently connected to the water mains and
should not be connected by a detachable hose-set.
The resistivity of the water supply must not be less than 1300 Ωcm.
This appliance should not be installed in a location where freezing can occur.
This appliance is not designed for outdoor use or use in damp environments.
Do not use a supply with incoming water temperatures greater than 48˚C
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1. Installation
Do not locate the appliance where the consequences of a water leak could be
unusually serious.
This appliance should not be installed in a location where freezing can occur.
This appliance is not designed for outdoor use or use in damp environments.
Ensure there are no hidden cables or pipework before commencing any drilling.
Wall Mounting
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• The appliance must be mounted horizontally with the inlet and outlet connections at
the top.
• Before attaching the appliance to the wall, consider the wiring route to the appliance.
• It is advised that the appliance be located as close as practical to the hot water outlet
in order to avoid unnecessary heat losses through the pipework.
• It can be mounted using the bracket or the key hole slots.
Using the bracket
• Using the supplied bracket and ensuring a level, mark the two screw holes onto the
desired mounting surface. Drill holes and insert wall plugs, secure the bracket to the
wall using the two screws provided. Oer up the appliance to the bracket and locate
into the corresponding slot on the back (see lower arrow of diagram 1).
Using the key hole slots
• Ensuring a horizontal level, mark two holes corresponding to the key hole slots (see
upper arrows diagram 1) onto the desired mounting surface. Drill holes and insert
wall plugs, followed by the two supplied screws, leaving approx. 10 mm head of each
protruding. Oer up the appliance to the screws and locate into the corresponding
key hole slots on the back of the appliance.
Diagram 1

2. Plumbing Connection
The resistivity of the water supply must not be less than 1300 Ωcm.
Do not use a supply with incoming water temperatures greater than 48˚C.
Only connect this appliance to a water supply that meets the min/ max pressures
specied in the specications section of this manual.
This appliance is intended to be permanently connected to the water mains and
should not be connected by a detachable hose-set.
• The appliance is designed for use with spray head taps.
• Ensure the following criteria are met for the water supply:
Minimum ow = 2.5 l/m
Pressure min/ max = 0.1 Mpa / 0.75 Mpa
Water resistivity = ≥1300 Ωcm
• Suitable for use with pre-heated water e.g. solar heating systems to a maximum of
48°C.
Flush supply pipes to remove any debris before connecting the appliance to the
water supply.
• Make the plumbing connections as indicated on the front cover of the appliance:
Blue/ Inlet (cold mains)
Red/ Outlet (hot tap/ outlet)
• It is strongly recommended that a service valve be tted close to the appliance on the
cold feed, this will aid future maintenance.
• The inlet is the left hand pipe and the outlet the right, when viewed from the front.
The supplied gauze should be tted into the inlet side of the appliance.
• The enclosed spray head/ ow limiter attachment should be installed into the outlet
of the hot tap to ensure best performance of the appliance.
• Turn on the cold mains feed and draw water through the appliance for several
minutes by opening the hot outlet. Ensure a smooth ow of water from the outlet
to conrm all air is purged from the system before closing the tap and carefully
inspecting all connections to ensure water tightness. This step is required every time
the appliance has been drained for any reason, such as routine maintenance.
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6
3. Electrical Connection
Do not commence electrical installation before completing all stages of the
plumbing installation.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualied persons in order to avoid a hazard.
The appliance must be permanently connected to the electrical supply through
an appropriately rated isolating switch with a separation in all poles.
Only connect the appliance to an electrical supply that meets the specication
detailed on the rating label.
The appliance must be earthed.
• Electrical supply should be capable of isolation via a double poled switch.
• The appliance must be earthed.
• Isolate electric and water supply before electrical installation.
• Refer to the ratings label on the appliance to ensure correct specication of
installation.
Wiring Diagram

4. Operation
• Once installed and connected to the electrical supply the appliance is ready for use.
• The appliance has no external controls and will simply operate when a ow greater
than 2.5 l/m is detected passing through the appliance.
• Due to the nature of instantaneous heaters, water is only heated as it passes
through the tank. Because the maximum power of the appliance is xed there is a
limit to the rate at which hot water can be delivered. The higher the ow of water, the
lower the potential temperature uplift.
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5. Cleaning and Maintenance
Never remove the cover of the appliance without rst isolating from the electrical
power supply.
The appliance should only be installed and maintained by a competent person in
accordance with any local electrical and plumbing regulations.
Do not use abrasive chemicals or cloths to clean this appliance.
Isolate the appliance from the electrical and plumbing supply before performing
any maintenance task.
The appliance should be drained if it will be switched o or unattended for
any length of time, particularly during the colder months of the year where the
possibility of freezing temperatures exists.
Ensure any future maintenance or modications to the plumbing system also
complies with the guidelines in these instructions.
Keep records of maintenance and ensure any future occupier of the building is
fully aware of the content of these instructions.
• Visually inspect the appliance and its immediate surroundings regularly for any signs
of water escape that might indicate the product may be nearing the end of its natural
life.
• Use a soft damp cloth when cleaning, avoid excessive use of liquids.
• Check outlet of any tap connected to the heater at regular intervals and remove any
build up of scale that might obstruct the ow rate of water through the appliance.

6. Specication
Model IN44 IN60
Power 4.4 kW 6.0 kW
Voltage 230 V 230 V
Rated current 19 A 26 A
Frequency 50 Hz 50 Hz
Min operating ow rate 2.5 l/ m 2.5 l/m
Min working pressure 0.1 MPa (1 bar) 0.1 MPa (1 bar)
Max working pressure 0.75 MPa (7.5 bar) 0.75 MPa (7.5 bar)
Maximum incoming water supply
temperature
48 °C 48 °C
Required water restivity ≥1300 Ωcm ≥1300 Ωcm
Water connection inlet/ outlet 1/2” BSP 1/2” BSP
IP rating IPX4 IPX4
Thermal cutout temperature 80 °C 80 °C
Dimensions (h x w x d) 140 x 190 x 80 mm 140 x 190 x 80 mm
Weight empty 1.6 kg 1.6 kg
Approvals CE, UKCA, WRAS CE, UKCA, WRAS
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7. Temperature Performance
Temperature/ Flow Rate
Maximum temperature increase from ambient incoming water supply temperature at a
ow rate of:
Flow rate (l/m) IN44T IN60T
2.5 25°C 34°C
3.0 21°C 28.5°C
4.0 16°C 21°C
5.0 13°C 17°C
Examples
Maximum water temperature
Incoming water temperature Flow rate IN44T IN60T
13 °C - Winter 2.5 l/m 38 °C 47°C
17 °C - Summer 2.5 l/m 42 °C 51°C
Table 1

If problems persist contact Hyco Technical Department on 01924 225200.
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8. Troubleshooting

Hyco Manufacturing Ltd
Normandy Court
Express Way
Castleford, WF10 5NR T 01924 225 200
E [e-mail]
hyco.co.uk
INFORMATION FOR CORRECT DISPOSAL OF THE PRODUCT IN ACCORDANCE
WITH THE EUROPEAN DIRECTIVE 2012/19/EU.
At the end of its working life this equipment must not be disposed of as household
waste. It must be taken to a local authority waste collection centre or to a dealer
providing this service. Disposing of electrical and electronic equipment separately
enables its components to be recovered and recycled to obtain signicant savings
in energy and resources. In order to underline the duty to dispose of this equipment
separately, the product is marked with a crossed out dustbin.
9. Guarantee and Service Policy
This product is guaranteed against faulty materials and manufacture for a period of
one year from the date of purchase. Hyco will in its sole discretion replace, repair or
refund any faulty unit. Incorrect installation and failure to follow correct operating
instructions are excluded. Consequential costs such as labour charges or damage to
surroundings are expressly excluded.
If you experience a problem with this product you should rst contact our customer
service department on 01924 225 200 before taking any further action. Experience has
shown that issues can often be resolved without the need to return or uninstall the
product.
10. Contact Us