Envirovent energisava250 User manual
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01 Introduction
You are about to install a product that is designed to outlast
the life-cycle of the building. Once installed the unit will operate
continuously for 5 years and beyond without a major service.
Please therefore ensure that this product is treated with care
and installed properly i.e. for the life of the building. If the unit
is mishandled you might break it! This invalidates the warranty.
And remember, if you have any problems please call our
dedicated Technical Team. We are always pleased to help and
in an emergency will come out to site quickly, completely free
of charge.
Thank you for choosing EnviroVent
The fastest growing ventilation company in the UK
HOTLINE: 0345 27 27 810
Due to our policy of continuous innovation and improvement EnviroVent
reserves the right to alter products specication and appearance without
notice.
01
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02
02 About The Unit
The energiSava 250 is a whole house heat
recovery unit which works by continuously
extracting stale, moisture-laden air from the
“Wet Rooms” of the apartment or a house -
the kitchen, bathroom and en-suite rooms -
and ducts this to a central unit. This extracted
air passes through a high eciency counter-
ow heat exchanger before being ducted to
the outside. Fresh air is drawn into the unit
from outside, which is warmed by the heat
exchange cell and delivered into the living,
dining and bedroom areas.
EXPLODED VIEW
Drain
Spacers
Front shell
Heat recovery cell
Front cover
Mounting
plate
Wall
bracket
Spigot
Filter & Filter plugs
Fixing rods
Motor assembly
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03 Wiring Diagram
Commissioning -
Electrical Connections
The appliance must be earthed and a
double pole switch having a minimum
contact separation of 3.0mm must
be used to provide isolation for the
unit. All wiring must be completed by
a qualied electrician. This appliance
is suitable for 230V ~ 50Hz single
phase supply fused at 3 amps. The
appliance is supplied with a 4 core
mains exible cable.
If the supply cord is damaged, it must
be replaced by the manufacturer, its
service agent or similarly qualied
persons in order to avoid a hazard.
03
Emergency shutdown details - Unit to be isolated
from the mains by turning it o at the isolating switch.
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04
04 Technical Specications
Maximum Flow Rate 75 l/s (270m3/h) MAX* Protection Class IPX2
Heat Exchanger Counter Flow (Plastic) Supply Filter
Extract Filter
G3
G3
Fans EC (Electronically
Commutated DC) Spigot Ø 125mm
Electrical Supply 230V/1PH/50Hz Dimensions 560 x 635 x 260mm
Max Power Consumption 140W Weight 14kg
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05 Installation Instructions
05
IMPORTANT
Be sure to have read and understood these
instructions before beginning the installation
process.
PRE-INSTALLATION CHECK LIST
Make sure that the unit can physically t in to
the desired location.
The energiSava 250 unit should be
situated so that access for maintenance or
replacement of parts is possible. Make the
ductwork runs as short as possible. Having
the most direct route and using as few
bends as possible will reduce air resistance
and improve the eciency of the unit.
SAFETY AND RECOMMENDATIONS
• All wiring must comply with Building
Regulations and the current I.E.E. Wiring
Regulations (BS7671) or the equivalent
standards for your country. The nal
installation should be examined and tested
by a qualied electrician.
• Precautions must be taken to avoid the
back-ow of gases into the dwelling from
the open ue of gas or other fuel-burning
appliances.
• Make sure the mains supply complies with
the rating label for voltage, frequency and
phase.
• 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.
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05 Installation Instructions
06
Control Options
Frost Protection
Boost Switch Live
Summer Bypass
Humidity Tracking
Boost - Remote Control
Control Options
Frost Protection
When the cell temperature in the unit falls below
3ºC the unit automatically warms the cell with
extracted air to prevent the formation of frost.
Boost - Switch Live
The energiSava 250 comes with Switch Live as
standard. It is an automatic function, sending
the unit to boost when the bathroom or kitchen
light is on.
Summer Bypass
The summer bypass helps reduce the air
temperature coming into the dwelling during the
summer months. It is an automatic function and
operates when the supply air temperature to the
property is above 25ºC.
Humidity Tracking
When the energiSava 250 unit senses a rise
in humidity, caused by increased moisture
generation such as through cooking or
showering, the extract and supply airows will
slowly begin to increase in direct proportion to
the increase in humidity.
It will then automatically track back down again
when humidity falls. This controls condensation
quietly and eciently.
Boost - Remote Control
The energiSava 250 unit also comes with a
remote control switch which can be used at any
time to send the unit to boost for 20 mins (see
pg 13).
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07
05 Installation Instructions
FIRST FIX - Installing ductwork and electrical supply
Important note: This unit is for wall or oor mount only. Ceiling mounting unit are
congured dierently and should be ordered separately.
1. Locate external terminations (supply and extract) in accordance with the latest addition of
the Domestic Ventilation Compliance Guide.
2. Ductwork within house Ø125mm - maximise duct size where possible. Make sure that
the ductwork is insulated in unheated spaces. Minimise exible duct.
3. Locate the mains supply within 1m of the location of unit. The position of the electrical
power supply or unit (a fused switched isolator) must not be mounted above or closer
than 1m to a cooker where it could be aected by excessive heat or moisture.
4. Make sure that there is room for the MVHR unit. The unit is designed to be horizontally
mounted in a kitchen or utility cupboard (on the wall). It can also be oor mounted in a loft
space with an additional*drainage kit. EnviroVent Part number KIT-CONDENSATE-ES250-2.
5. Also make sure that there is a free space at the front of the appliance for cleaning the lter
and carrying out maintenance on the appliance.
Installed example, RH unit shown.
A – No exhaust within 2m of air inlet
B – Inlet duct from atmosphere
C – Outlet duct to atmosphere
D – MVHR
E – Ducts to and from property
F – Condense Drain
Ducting Conguration
See page 9 for duct connections to
the unit/airow directions
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05 Installation Instructions
08
SECOND FIX - Installing the unit
1. Attach the wall bracket to a at stable
surface that is capable of bearing the
unit’s weight, 12Kg. Ensure that bracket is
positioned so that there is enough space
for the condensate drain and ducts to be
connected. Fixing kit provided.
2. Attach spacers x 2 with screws provided.
The spacers ensure that the unit tilts
forward to improve drainage. Use the
tie down cable if required to secured the
bottom of the unit.
3. Slide the unit onto the wall bracket and
attach ducting and drain.
Wall bracket
Pre xed bracket
on the back of the
energiSava 250 unit
Plugs x 5
Screws x 5
Wall t only
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09
05 Installation Instructions
SECOND FIX
Airow and drain tting - LH
Drains are factory tted. The units has either a LH or RH drain.
To atmosphere
From atmosphere
Extract from dwelling
Supply to dwelling
To atmosphere
From atmosphere
Extract from dwelling
Supply to dwelling
Airow and drain tting - RH
Wall
mount
Wall
mount
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1
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