Product Instruction Manual
Speedflow
SF05K, SF10K & SF15K
SF05KSS, SF10KSS & SF15KSS
Undersink unvented water heater
Version 3.2 Jan 2015
V16.5/7
Thank you for purchasing a Hyco Speedflow unvented water heater. The
Speedflow is ideal for use in cloakrooms and kitchens in offices, shops,
student accommodation and domestic premises which have been extended
and there is no central hot water system nearby. One unit located under the
kitchen sink is often used to supply hot water for light dishwashing in the
kitchen sink and hand washing in the cloakroom basin. Please read and
understand these instructions before commencing installation and leave
them with the user when installation is complete.
1. Important safety points
•
The unit must be installed and maintained by a competent person in accordance
with current electrical and plumbing regulations.
•
Only connect the heater to a single phase supply with a mains voltage as specified
on the rating plate.
•
Do not connect to power unless unit is full of water – open tap and allow water
to flow freely to clear airlocks.
•
Do not switch power on if water in heater or pipes could be frozen.
•
Always fit the heater the correct way up (pipes should be at the top).
•
It is essential that the supplied pressure-relief device is fitted, make plumbing
connections with flexible stainless steel hoses to facilitate future maintenance.
•
Water may drip from the discharge pipe of the pressure-relief device and this
pipe must be left open to the atmosphere.
•
The pressure-relief device is to be operated regularly to remove lime deposits and
to verify that it is not blocked.
•
Use lowest acceptable temperature setting to save energy and reduce lime scale.
•
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.
2
2. Installation
Wall Mounting
The Speedflow is normally fitted immediately below the outlet to be supplied, but it
can be mounted above or to the side of the outlet provided it is vertical with the
pipe outlets at the top.The unit can either be placed directly on the floor or fixed to
a wall using the mounting bracket supplied.
Ensure the mounting surface is strong enough to support the speedflow
including the weight of the water.
The 5 litre models (SF05K/SS) can typically serve 1 sink, the 10 litre models
(SF10K/SS) can typically serve 1 or 2 sinks and the 15 litre models (SF15K/SS)
can typically serve 2 or 3 depending on simultaneous usage.
3
Plumbing
A service valve should be fitted to allow / facilitate future maintenance.
The supplied 6 bar pressure relief valve must always be fitted. There must be
no obstructions in the pipwork between the heater and the relief valve. The
relief valve must discharge to a safe and visible place.
The hot and cold fittings are 1⁄2” BSP and are at the top of the unit. These
connections are colour coded (blue = cold, red = hot).They are not interchangeable.
The final connection of the Speedflow to pipework should be implemented with
flexible stainless steel hoses.
Open hot water tap and allow water to run through fpr at lease 5 seconds
to clear airlocks.
Depending on the installation circumstances, other accessories may be required.
If required, these must be ordered separately and are installed as shown on the
diagrams below and on the next page.Water pressure can increase considerably
at night when demand is low, so a pressure reducing valve may be required even
if there is no obvious problem at installation.
DIAGRAM A - Pressure below 4.2 bar
Pressure
relief valve
Hot
Cold
T piece
Speedflow
Length of pipework
required for expansion
5 litres - 1.4m
10 litres - 2.8m
15 litres - 4.2m
4
To drain
Nearest cold
draw off
Service valve
Cold water mains
No accessories needed.
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