Hyco Speedflow SF10L Fitting & User Instructions

These installation and user instructions refer to the following models:
MODEL CAPACITY
SF10L 10 litres
SF15L 15 litres
GENERAL
The Hyco Speedflow is an unvented water heater designed for direct connection
to the mains supply, and can serve one or more outlets using ordinary taps.
It is recommended that the Speedflow is fitted by an experienced installer
familiar with unvented water heaters.
FITTING TO WALL
The Speedflow is designed to be located in the vertical position below the outlet
to be supplied. It can be free standing, mounted on the floor or fixed to a wall
using the bracket supplied. Either way it must remain upright, with the pipe
connection at the top.
Allow for the weight of the Speedflow when full of water (1kg per litre) when
assessing the suitability of a potential fitting.
PLUMBING CONNECTIONS
Installation must comply with current Water Regulations.
The hot and cold fittings are ½" BSP at the top of the unit. These fittings are
colour coded (blue = cold, red = hot) and are not interchangeable.
Use PTFE tape on the threads and fibre/synthetic washers to ensure a water-
tight seal.
The Speedflow is supplied with a 6 bar pressure relief valve. This must
ALWAYS be fitted. The relief valve must discharge to a safe and visible
place, in accordance with Water Supply regulations.
Depending on the installation circumstances, other accessories may also be
required. If required, these must be ordered separately and are installed as
shown on the diagrams opposite. Do remember that the mains water pressure
can increase considerably at night.
DIAGRAM 1:
LOADING INSTALLATION
2.0kW UNDERSINK
2.0kW UNDERSINK
expansion relief valve
nearest cold water
hot
cold
to drain
Accommodation of expanded water in the supply
pipework
15mm dia. pipe:
10L capacity - 2.75m (9ft), 15L capacity - 4.2m
(14ft).
22mm dia. pipe:
10L capacity - 1.2m (4ft), 15L capacity - 1.8m
(6ft).
expansion relief
valve
hot
cold
to drain
DIAGRAM 2:
than 4.2 Bar where the expanded water
CANNOT be accommodated in the pipework.
Use SF1 kit. (kit is comprised of check valve
and expansion vessel).
expansion
vessel
nearest cold water
expansion relief
draw
valve
off
hot
cold
check valve
to drain
DIAGRAM 3:
Inlet water pressure is
MORE than 4.2 Bar. Use SF2 kit. (kit is
comprised of pressure reducing valve and
expansion vessel).
draw off
service valve
cold water supply
expansion
vessel
nearest cold water
service
draw
valve
off
check valve
cold water supply
Inlet water pressure LESS
pressure
reducing
valve
service
valve
cold water supply