MITSUBISHI ELECTRIC SAF500E7 Heat Exchanger Instruction Manual

INSTALLATION MANUAL
VENTILATION AND HEAT EXCHANGE UNIT
(ENERGY RECOVERY VENTILATOR)

Model No.
SAF150E7, SAF250E7, SAF350E7, SAF500E7, SAF800E7, SAF1000E7

• Read through this °Cautions on Safety with care before installing the unit.
• Described below are the way we are stimulating your attention to what you are supposed to observe to prevent dangers to the users or other people as well as loss to the property.

Cautions on Safety

( Never Fail to Observe )

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• This appliance can be used by children aged 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 involves.
• Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
• Make sure to disconnect the power plug before (cleaning the product.

Never fail to observe the caution items described hereinafter because all of them refer to the critical matters on safety. The meanings of the marks or indications are described below.

• The degrees of danger or damage that is likely to occur due to the wrong use ignoring the indications are categorized for an explanation as-narked below.
• Kinds of the items to be observed are categorized for clarification with the following pictorial symbols.

WARNING The column with this mark shows  *Conceivable Threat of Death or Serious Injury.
CAUTION ®a This pictorial indication shows of Damage or Loss to Materials only”.
This pictorial indication shows “Prohibited”.’
The column with this mark shows the likelihood of Forced Execution°.

WARNING
Never fail to ask the sales office from which you bought the unit or the Installation service shop to install the unit If you install it by yourself, any Inappropriate installation works would cause an electric shock or a fire.
Carry out the installation works accurately in line with this installation work manual, Improper practice of installation could cause an electric shock or a fire.
Choose the Installation place that is endurable in quality as well as In weight, then Install the unit accurately with adequate strength and completeness of Installation In accordance with the installation work manual. Otherwise, It is likely to cause an electric shock, a fire, a drop of the unit thus causing injury to the human body.
Carry out electrical work in accordance with the laws and regulations prevailing in the country concerned, technical standards and explanation for work, and make absolutely sure that an exclusive circuit is used. Any insufficient capacity of the power circuit and improper work can result in electric shock and fire hazards.
The external air intake opening should be positioned away from the exhaust openings of combustion gases etc. The intake of such gases could cause a lack of oxygen In the room. The external air intake opening should not be positioned where discharged air may directly enter it. A situation like this will lead to the room being contaminated and this may pose a health risk. . Netting or something similar should be provided at the external air intake opening to prevent birds etc. interfering with the unit. Nests or other foreign objects should be removed. That could cause a lack of oxygen in the room.
Carry out the groundwork. Never connect the ground round wire to a gas pipe, a water supply pipe, a lightning conductor, a ground line of a telephone, etc. An incomplete ground wire Is likely to cause an electric shock.
When the system is checked and the power cable undergoes maintenance, stop the operation, and switch the exclusive circuit breaker ‘OFF”. Otherwise, it could cause an electric shock.
CAUTION
Provide an exclusive circuit breaker that can completely break contacts on all the poles by more than 3mm through direct connection to the power terminals. Depending upon the environment for installation, it becomes necessary to install an earth leakage breaker.
When you want to pierce the metal duct through the metal lath or the wire lath or the metal plate of the wooden facility, do not forget to insulate electrically between the duct and the wall. Otherwise. it would cause an electric shock or an electric leakage.
Don’t use other parts than specified (including the auxiliary parts) for installation works. If you do not use the specified parts. it is likely to cause a drop of the unit a fire. an electric shock. etc.
Install the outdoor duct In a falling gradient toward the outside so as to prevent water from coming in. If it is not installed so. the building is likely to be flooded, wetting the household effects.
Heat-insulate the outdoor duct (including the indoor side. if necessary) to prevent dewing. If heat insulation is not adequate, water likely goes indoors and wets the household properties.
When it is high humidity and high temperature inside the ceiling, a ventilation system must be Installed Inside the ceiling. Otherwise. it could cause a fire or an electric leakage.
Connect the power line and the connecting line with accuracy using the specified cables and fix them firmly so as not to put the outer stress of the cables on the pin connecting area. Incomplete connection or fixing is likely to cause a heat generation or a fire.
Install the power line and the connecting line with accuracy so the power source cover may not float. If the installation of the power source cover is inappropriate, the pin connection area is likely to cause heat generation, a fire, and an electric shock due to dust or powder.
Never install the unit near a place where there is a fear of leakage of an Inflammable gas. If gas happens to leak and stays around the unit, it is likely to cause a fire.
Don’t use the unit at other voltages than the rated one. It could cause a fire or an electric shock.
Do not install the unit in locations with large amounts of oily smoke, such as food preparation areas. It could cause a fire.
Don’t install the unit at a place of a high temperature or with a flame. It could cause heat generation or fire.
Do not install in locations where harmful or corrosive gasses may be present (i.e. acidic, alkali, organic solvent, paint gasses, etc. from machinery or factories). Installation in such a location could cause gas poisoning and fire.
Do not install in locations with high humidity, such as close to bathrooms,s, etc. It could cause an electric shock or an electric leakage etc.

Cautions for Operation

Never fail to make the inspection opening at the specific place on the ceiling so you can perform the constant cleaning or the equipment checking of Slier and heal exchange element.
■ The inspection opening shown below Is necessary to clean the heat exchange element and the filter as required. If not cleaned. they are likely to get dogged, resulting in degradation of performance.

Note) Model SAF350E7 and SAF500E7 have two Heat Exchange Elements.

Note) Model SAFI000E7 has four Heat Exchange Elements.

■ This Energy Recovery Ventilators should be installed at the Mace where a larger space than the sizes shown below can be seared or the ceiling space

■ Don’t install it near the waler-heater.
■ Refrain From the following duct installation works.

1. Excessive heeding

2. Multi-times bending

3. Making the connecting duct smaller

• Do not use in balhrOtins or food preparation areas etc. if you use the unit at a place of much soot and high humidity. the filter or the heat exchange element gets clogged and disables you to use it.

• Use the Energy Recovery Ventilators in an ambient temperature of 40’C or less. Never install the unit at the Mace titers the flame likely reaches directly the unit. If you use it at an atmosphere of more than 40t for hours, it is likely to cause deterioration or deformation damage of the resin part

• Be careful of dewing and frosting.
  As shown in the We to the right. suppose a high temp absorbing air condition A and a low temp absorbing air condition B are patted on the sir line figure, then a high temp ate A is heat-exchanged by the unit and goes out of the saturation curve as shown by Point C. In this case, the unit will be dewed or frosted. To avoid U1if, you are ‘squired to heat a low temp air B up to B’ so as to get C’ below the saturation serves, before using the unit.

Cautions for Installation

CAUTION
Install at a stable place of sufficient strength.
Please note that there might be some places, not 0 strong enough to install due to the structure of the building.
Do not install in locations where harmful or corrosive gasses may be present (i.e. acidic, alkali, organic solvent, paint gasses, etc. from machinery or factories)
Prohibited
Installation in such a location could cause a gas poisoning and a fire.
Never fail to install the unit inside the heat insulting walls or, in other words, in the space insulated from the open air.

Local Procurements

Cable for supply cord: VVF cable with 01.6 or 02.
Cable for connecting the main unit and the remote controller: 300V/500V, 60227IEC10 (hardwire). The cross-section area for each core wire is 1.5mm2.

Reference Sketch

Use conditions
Outdoor air conditions: Temperature range —10°C-40°C, relative humidity 85% or less
Indoor air conditions: Temperature range —10°C-40°C, relative humidity 85% or less
Installation requirements: Same as the indoor air conditions

• Indoor air here means air in air-conditioned living rooms. Its use in refrigerators or other places where temperature can fluctuate greatly is prohibited even if a temperature range is acceptable.
  Example: Indoor air conditions
  During the cooling period: Temperature 27°C, relative humidity 50%
  During the heating period: Temperature 20°C, relative humidity 40%

Name and Dimension of Each Part

Note1) Model No.SAF350E7 and SAF500E7 have two Heat Exchange Elements.
Note2) Model No.SAF350E7 and SAF500E7 have different fan and motor locations.

ø164
SAF500E7| 904| 1090| 70| 1018| 960| 19| 132| 640| 470| 159| 182| 317| ø194| ø.210

Model No
SA800E7
SAF 1000E7

Note1) Model No.SAF1000E7 has four Heat Exchange Elements.

258
SAF1000E7| 1134| 1322| 85| 1250| 1190| 19| 228| 678| 612| 194| 218| 388| ø 242| ø 258

Installation Method

1. Model Installation

• You are required to prepare the ceiling suspension bolts, nuts and washers.
• Install the unit firmly and horizontally enough to support its weight. (Fig. 1)
• If you do not fit it firmly, it is not only dangerous but also easily vibrated. If it is not fitted horizontally, the damper unit becomes defective in operation.

Caution

• When you are required to be cautious on the prevention of vibration, we recommend you to use the anti-vibration ceiling suspension fixtures.
• Never fail to make an inspection opening with
• 450 mm or more at the place shown in the paragraph of “Cautions For Operation”, so that you can inspect filters, Heat Exchange Elements, power sources,s and motors. 2.

Cautions on Installing The Unit Body Upside Down

• Re-fit the ceiling suspension fixture on the opposite side. (If they are left as it is, the foolproof function of ceiling suspension bolts does not work and will cause the danger of dropping of the unit.)
• The printed indication is in a reversed position. In particular, be careful of the arrow mark [Q] showing the direction of inserting a Heat Exchange Element.

Electric Works
Ask a specialized electrical construction operator for advice regarding wiring in accordance with “Technical Standards for Electrical Equipment” and”Interior Wiring Regulation”.
Connect wires/cables indicated by broken lines.

Power Source to be supplied to on and after the second main body.

• For power supply, use a VVF cable withØ1.6 or 2.
• Take the following steps on connecting wires/cables:
• Remove two screws fixing the cover of the electrical components box, open the cover, and connect wires/cables correctly.
• Secure the cable drawn from the terminal board firmly with the cable holder.
• If a large volume of air is required or a long duct is used, switch the wire connection from Low to Extra high according to the following steps:
• Remove two screws securing the cover of the electrical components box, and open the cover.
• In the electrical components box, change the connection of the fan motor leads from High to Extra high.

Caution

• When operating multiple air-to-air heat exchange units using a single switch, the maximum number of units able to be operated is 10.
• Be sure to use the appropriate power supply corresponding to each model number, Using an inappropriate power supply may cause the motor to burn out.
• Grounding work must be based on Class D as defined in “Technical Standards for Electrical Equipment”.
• After wire connections are completed, check the connection again before turning the power on.

Duct Installation

• Duct installation is necessary to protect against access to live parts, rainwater, or contact with moving parts.
• Seal the junction of an adaptor and a duct with aluminum tape firmly to prevent any air leakage.
• The room intake opening should be positioned as far as possible from the inside supply opening.
• Use the specified ducts. (See the Name and Dimension of Each Part.)
• Install two outdoor ducts so they will be in the downgradient toward the outside to prevent water from coming in. (Gradient: 1/100-1/50) (Fig. 2)
• Never fail to heat-insulate two outdoor ducts (including outside air and exhaust air duct) to prevent dewing. (Material: Glass Wool, Thickness-25mm) (Fig. 2)
• When you want to pierce the metal duct through the metal lath or the wire lath or the metal plate of the wooden facility, do not forget to insulate electrically between the duct and the wall. (Refer to the laws and regulations of the country concerned and the technical standard.)

Pilot Running

• On completion of installation works, never fail to check wirings and perform a pilot running.
• After completion of wiring, power ON and perform a pilot run according to the following steps for checking an airflow condition and a damper operation.
• Check the opening and closing of a damper by opening the inspection cover of the side of the unit.
• Model No. SAF800E7, SAF1000E7, and two Fan Motors are stopped during an operation of the damper.

| Each switch setting| Checking items
---|---|---
Function Select Switch| Air Flow Switch| Airflow condition| Damper
1| Energy Recovery| High (Extra High)| Check if the air from the inside supply opening and the one from the room intake opening are set to High (Extra High) and to Low, respectively| Open (A Damper is beyond)
Low
2| Normal Ventilation| High (Extra High)| Close (A Damper is near)
Low

■ In case any abnormality occurs in a pilot running, its conceivable cause would be wrong wiring. Don’t forget to switch the exclusive breaker to OFF before correcting the wiring. Otherwise, it is likely to cause an electric shock.

MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
16-5 Konan 2-Chome, Minato-ku, Tokyo, 108-8215, Japan
http://www.mhi.co.jp/aircon/
MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD.
7 Roundwood Avenue, Stockley Park
Uxbridge, Middlesex, UB11 1AX, United Kingdom
Tel: +44-20-7025-2750
Fax: +44-20-7025-2751
http://www.mhiae.com

References

• 冷熱製品サイト｜三菱重工サーマルシステムズ株式会社
• Mitsubishi Heavy Industries Air Conditioning Europe - MHIAE

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