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ECOi - 2 and 3 pipe electric VRF systems
Since its formation in 1958, SANYO Air Conditioners
has been at the forefront of innovation with its
market-leading research and development program.
From the world's first heat pump air conditioner in
1960 to the first 3 pipe VRF system in 1989, SANYO
continues to deliver leading technology combined
with the reliability and customer service that you
would expect from a global brand like SANYO.
Benefits
Ease of installation
R410A has a higher operating pressure with a lower pressure
loss than previous refrigerants. This enables smaller pipe sizes to
be used and allows reduced refrigerant charges.
Simple to design
SANYO recognise that designing, selecting and preparing a
professional VRF quotation can be a time consuming and costly
process, especially as it is often also a speculative exercise. So
we have designed proprietary software which is quick and easy
to use and produces a full schematic layout of pipework and
controls, as well as a full materials list and performance data.
L1
L2
Ln
H1
L3
L4
H2
Flexible pipe length
Category
Item
Maximum pipe run in one direction
L1
Difference between maximum length and minimum length from the
Allowable pipework length
L2-L3
first distribution joint
L3 L4 Ln
Maximum length of each distribution joint
L1+L3+L4
Maximum total pipe run length
When outdoor unit installed higher
Allowable
H1
height
When outdoor unit installed lower
difference
H2
Maximum difference between indoor units
1
Easy to position
The compact design of the ECOi outdoor units means that they
fit into a standard lift and are easy to handle and position when
on site. The small footprint and modular appearance of the units
ensure a cohesive appearance to an installation.
Off-coil temperature control
SANYO ducted units offer the unique advantage of being able to
offer off-coil temperature coil as standard. This allows designers
to select units using an off coil temperature between 7°C and
22°C. This allows room environments to be cooled without
subjecting its occupants to cold drafts or uncomfortable
conditions. This is achieved without any extra controls or wiring
to each unit.
Wide selection and connectability
With 15 indoor model styles available, ECOi systems are the ideal
choice for multiple small capacity indoor unit installations, with
the ability to connect up to 40 indoor units to systems of 24HP
or greater.
40
35
33
30
29
25
26
23
20
19
15
16
13
10
5
0
8HP
10HP
12HP 14HP 16HP 18HP 20HP 22HP 24HP - 48HP
ECOi system capacity
Description
Actual length
150
Equivalent length
175
40
30
300
50
40
15
UK Conditions: Cooling Indoor 23˚C DB 50% RH Outdoor 30˚C Heating Indoor 20˚C Outdoor 0˚C
Rating Conditions: Cooling Indoor 27˚C DB 19˚C WB Outdoor 35˚C DB 24˚C WB Heating Indoor 20˚C DB Outdoor 7˚C DB 6˚C WB
Easy to control
A wide variety of control options are available to ensure
that the ECOi system provides the user with the degree
of control that they desire, from simple room controllers
through to state of the art BMS controls.
Simple to commission
Simple set-up procedure including automatic addressing of
connected indoor units. Configuration settings can be made
from an outdoor unit or via a remote controller.
Accurate capacity control
To ensure that the compressor capacity is matched to
building load as accurately and efficiently as possible,
SANYO has designed its range of 2 and 3 way ECOi
systems to operate with DC inverter and high-efficiency
fixed speed compressors. The system selects the most
efficient compressor to operate by dynamically monitoring
the building load and choosing the best compressor
combination to run.
40
36
Max length (m)
UK Conditions: Cooling Indoor 23˚C DB 50% RH Outdoor 30˚C Heating Indoor 20˚C Outdoor 0˚C
Rating Conditions: Cooling Indoor 27˚C DB 19˚C WB Outdoor 35˚C DB 24˚C WB Heating Indoor 20˚C DB Outdoor 7˚C DB 6˚C WB
Easy to maintain
Each system allows the use of prognostic and diagnostic
controls routines, from refrigerant charge control through to
complex fault code diagnostics, all designed to reduce the
speed of maintenance calls and unit down time.
Lower running and life cycle costs
SANYO ECOi VRF systems are amongst the most efficient
VRF systems on the market, offering COPs in excess of 4.0
at full load conditions. The system is also designed to make
sure that we reduce the running cost of each system by
using our unique road map control routine to ensure that
the most efficient combination of compressors are running
at any one time. Improved defrost sequencing also reduces
running cost by defrosting each outdoor coil in turn when
conditions allow.
2
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