Hyco Rho User manual

roduct Instruction Manual
Rho
IN44 & IN60
Instantaneous inline water heater
Version 3.2 Jan 2015
V22,11/1

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Thank you for purchasing a Hyco instantaneous water heater. Instantaneous
water heaters are very energy efficient since they only consume energy
when they are used and so have no standing losses.Bare wire heating
systems offer rapid heat up times and a near instant supply of hot water.
The heaters are intended for handwashing applications and should be used
in conjunction with spray head taps. lease read and understand these
instructions before commencing installation, and leave them with the user
when installation is complete.
1. Important safety points
The appliance must only be connected to a single phase supply.
Isolate electrical and water supply before installation.
Electrical installation must be carried out by a qualified electrician in accordance
with the latest edition of the IEE wiring regulations.
Only connect the appliance to a power supply that conforms to the specification
stated on rating plate.
The appliance must be earthed at all times.
The appliance must be permanently connected to the electrical supply through
an isolating switch with a contact separation of no less than 3mm in all poles.
Do not use the appliance if there is any possibility of the water supply
being frozen.
Never remove the cover of the appliance without first isolating it from the
electrical power supply.
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.
Do not use a supply with incoming water temperatures greater than 600C.

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2. Installation
Wall Mo nting
Do not install if there is a risk of water freezing in the heater.
Do not install the heater where the consequences of a leak could be
unusually severe. (e.g. above computer equipment).
• The heater must be mounted horizontally with the inlet and outlet connections
at the top of the heater.
• Before attaching the heater to the wall, consider the wiring route to the heater.
There are two options available for the mounting of the product, select either the
key hole slots at the rear of the product or use the supplied bracket.
Using the bracket
Using the supplied bracket and ensuring a level, mark the two screw holes onto
the desired mounting surface.
Using the key hole slots
The back plate of the heater is detachable by the four screws located in each
corner. Once removed use the backplate as a template and, ensuring a level,
mark the two required screw holes.
Ensure there are no hidden cables or pipes before commencement of drilling.
Drill the holes, insert the wall plugs and screw the bracket/heater to the wall.
(see diagram below).
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Plumbing connections
The heater is designed for use with spray head type taps.
Ensure the following criteria are met for the water supply:
• Minimum flow = 2.0L/min
• ressure Min/Max = 0.1Mpa/0.75Mpa
• Water resistivity = ≥1300 Ωcm
Suitable for use with pre-heated water e.g. solar heating systems to a maximum
of 600C.
Flush supply pipes to remove any debris before connecting the heater
to the water supply.
Make the plumbing connections as indicated on the front cover of the heater:
• Blue/Inlet (cold mains)
• Red/Outlet (hot tap/outlet)
It is strongly recommended that a service valve be fitted close to the product on
the cold feed, this will aide future maintenance.
The inlet is the left hand pipe and the outlet the right, when viewed from the front.
The supplied gauze should be fitted into the inlet side of the heater.
The enclosed spray head/flow limiter attachment should be installed into the
outlet of the hot tap to ensure best performance of the heater.
Turn on the colds main feed and draw water through the heater for several
minutes by opening the hot outlet. Ensure a smooth flow of water from the outlet to
confirm all air is purged from the system and check for leaks on all connections. This
step is required every time the heater has been drained for any reason, such as routine
maintenance.

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Electrical connection
Do not commence electrical installation before connecting the heater
to the water supply and verifying there are no leaks or air gaps.
Electrical installation must be carried out by a qualified electrician in
accordance with the latest edition of the IEE wiring regulations.
• Electrical supply should be capable of isolation via a double poled switch.
• The heater must be earthed.
• Isolate electric and water supply before electrical installation.
• Refer to the rating label on the heater to ensure correct specification of
installation.
The heaters are supplied pre-wired.
(see diagram below).
L
N
E
PCB
RELAY
THERMAL
CUT OUT
TAN K

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3. Operation
Once installed and connected to the electrical supply the heater is ready for use.
The heaters have no external controls and will simply operate when a flow of higher
than 2.0L/m is detected passing through the heater.
Due to the nature of instantaneous heaters, water is only heated as it passes
through the tank. Because the maximum power of the heater is fixed there is
a limit to the rate at which hot water can be delivered.
4. Maintenance
• Always disconnect the power before commencing any cleaning or maintenance.
• Never open the cover of the heater without first isolating the mains power supply.
To clean the heater cover only use a clean damp cloth, do not use abrasive compounds.
Electrical and plumbing components should be inspected on a regular basis by a
suitably qualified/competent person.

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80mm
190mm
140mm
5. Specifications
IN44 IN60
Power supply 230V~ 50Hz 230V~ 50Hz
Dimensions H140 x W190 x D80mm H140 x W190 x D80mm
Power 4400W 6000W
Protection class I X4 I X4
Rated current 19A 27A
Over heat protection 800C 800C
temperature
Minimum operating 2.0L/Min 2.0L/Min
flow rate
Minimum operating 0.1M a 0.1M a
pressure
Maximum rated pressure 0.75M a 0.75M a
Re uired water resistivity ≥1300 Ωcm ≥1300 Ωcm
Maximum incoming water 60°C 60°C
supply temperature
Water fittings 1/2” BS 1/2” BS

hyco.co.uk
Hyco Manufacturing Ltd
Normandy Court
Express Way
Castleford, WF10 5NR
T 01924 225 200
F 01924 225 210
E [email protected]
INFORMATION FOR CORRECT DIS OSAL OF THE RODUCT IN ACCORDANCE WITH THE
EURO EAN DIRECTIVE 2002/96/E.
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 significant 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.
6. G arantee and service policy
This product is covered by a standard parts or replacement warranty for a period of one
year from the date of purchase.
If there is a manufacturing defect within the warranty period we will send spare parts,
repair and return the unit or, at our discretion, supply a replacement product.
Incorrect installation and frost damage or failure to follow correct operating and
maintenance instructions are excluded. Consequential costs such as labour charges
or damage to surroundings are expressly excluded.
Contact us
If you experience a problem with this product you should first contact our 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.