Comfort Zone T15 User manual

Installation and
user manual
Supply air unit T15

Quick Start Guide
All settings and adjustments are made in the service menu unless otherwise specified.
To open the service menu
Go to Advanced settings, select General settings and press and hold the
button for 6 seconds.
Filter replacement and service access
Unscrew the four screws, remove the hatch and remove the old filter set,
install the new filter set, hang the hatch on the four screws and screw the
screws.

TABLE OF CONTENTS
1. INTRODUCTION 1
1.1 Safety information 1
1.2 Field of application 1
1.3 Symbols used in this manual 2
1.4 Nameplate and symbols on the product 2
2. SUPPLY AIR UNIT T15 3
2.2 Functional description 3
3. TRANSPORT AND STORAGE 4
3.1 Transport 4
4. INSTALLATION 5
4.1 Prepare the installation site 5
4.2 Installing the air supply unit 6
4.3 Connect the supply air unit 7
4.4 Ventilation system connection 8
4.5 Cooling and heating system connection 9
4.6 Connecting electronics 10
5. INSTALLATION ALTERNATIVES 12
5.1 Via supply air 12
5.2 In combination with heating system 13
6. SETTINGS AND START-UP 14
6.1 Starting the cooling function 14
6.2 Air flows 14
6.3 Adjust the fan speed 14
6.4 Setting the hot supply air temperature 15
6.5 Setting the maximum water flow 15

7. MAINTENANCE AND SERVICE 16
7.1 Filter replacement and cleaning 16
7.2 Venting 16
8. PROJECT PLANNING 17
8.1 Air flows 17
8.2 Fan diagram 17
9. WIRING DIAGRAM 18
10. TECHNICAL SPECIFICATIONS 19
10.1 Components for air supply unit 20
10.2 Dimensions 21
11. WARRANTY INFORMATION 22
12. CONTACT 23

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1. Introduction
1.1 SAFETY INFORMATION
This manual is intended for the professional installer and as a guide for the user. The
installation must be done professionally. The installer does not need to be a certified
refrigeration technician.
The product may be used by children aged 8 years and over and by persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge
if they are supervised or instructed in its safe use and are aware of the dangers of the
product and its use.
1.2 FIELD OF APPLICATION
The ComfortZone T15 supply air unit is designed for heating and cooling ventilation
air for small houses with waterborne heating systems.
Any other use is considered improper use and may result in damage to the devices
and/or personal injury. Always follow the instructions in the accompanying manuals
and contact us if you are unsure.
The device must only be installed according to the instructions in this manual.

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1.3 SYMBOLS USED IN THIS MANUAL
In this manual the following symbols are used
Warning!
This symbol indicates that the installer is at risk of harming himself or
others (seriously) or seriously damaging the product.
Careful!
This symbol indicates that the product may be damaged.
Note!
This symbol indicates a note with additional information for the installer.
Tip!
This symbol shows suggestions and advice for the installer to perform
certain tasks more easily or conveniently.
1.4 NAMEPLATE AND SYMBOLS ON THE PRODUCT
Important information about the supply air unit can be found on the nameplate and on
the symbols on the unit. The nameplate is located on the left side of the bottom plate.
Labelling
The product is CE marked, which means that Comfortzone declares that the product
complies with EU requirements for safety, health and environmental protection.
Disposal
The product must be collected separately when it is discarded. Dispose
of according to local WEEE regulations.

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2. Supply air unit T15
2.1 GENERAL PRODUCT DESCRIPTION
The ComfortZone T15 supply air unit is designed for preheating and cooling the
supply air in houses with waterborne heating systems. The unit is not intended as a
heating battery in air heating systems, but its function is to preheat incoming air.
The supply air unit is complete and equipped with low-energy fan, water battery,
coarse and fine filters, supply air temperature thermostat. In the supply air unit, the
supply air is filtered and cooled or heated to the appropriate temperature.
The supply unit is equipped with a connection for a circulation air duct that increases
the air flow and the cooling capacity. Circulation air is taken from the appropriate
space in the house.
The temperature of the incoming supply air in heating mode is set with a thermostat
behind the front door. The fan speed of the supply air unit is controlled from the
exhaust air heat pump.
The supply air unit is equipped with a trap on the supply air and automatic fan stop
when the supply air temperature is below 11 degrees.
The T15 is adapted to work with ComfortZone cooling and heating exhaust air heat
pumps.
2.2 FUNCTIONAL DESCRIPTION
When the cooling function is activated, the heat pump produces cooling instead of
heating of the circulating water.
In simple terms, it can be described as the evaporator and heat exchanger changing
function. The heat exchanger acts as an evaporator and the evaporator as a heat
exchanger. This is done by means of a 4-way valve.
The cold water is transferred to the water coil in T15 where the air flows through and is
then cooled and blown out to the air vents in the house.

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3. Transport and storage
3.1 TRANSPORT
Transport or store the device under the following conditions.
Temperature (°C) 5 – 50 °C
Humidity (%) < 85%, non-condensing
Warning!
Always move the supply air unit with at least two people.
Note!
Only remove the original packaging from the air handling unit at the
installation site. Secure the unit against tipping over.

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4. Installation
4.1 PREPARE THE INSTALLATION SITE
The supply air unit should be located in the laundry room, utility room, storage room,
mechanical room or if space is available adjacent to the exhaust air heat pump. 800
mm of free space is needed in front of the unit for service and maintenance. The
supply air unit requires connection to a condensate drain. Recommended is T15
installed next to the heat pump at the top. If this is not possible, the heater can also be
installed in another location.
The supply air unit should not be installed in areas with a temperature lower than +5˚C
or on walls adjacent to bedrooms or similar areas where the unit's operating noise may
be transmitted through the building structure.
Make sure there is enough space.
Image 1 Required space around the heat pump and supply air unit
• At least 800 mm of space at the front to allow for maintenance.
• At least 10 mm of space around the supply air unit, walls or other objects.
• At least 300 mm distance above the supply air unit.
Min. 300 mm
Min. 800 - 1000 mm
Min. 10 mm
Min. 10 mm
Min. 10 mm

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4.2 INSTALLING THE AIR SUPPLY UNIT
The wall bracket is mounted horizontally on the wall. The supply air unit is lifted into
place and hooked onto the unit bracket at the rear of the wall bracket so that the unit
rests against the wall with the spacers down. For dimensions, see technical
specifications.
Check the following:
• The wall has a load-bearing capacity which can handle the weight of the unit.
• The wall is flat.