Titon HRV2.75 Q Plus User manual

EN
ventilation systems
HRV2.75 Q Plus
TP405HBF
Heat Recovery Ventilation UnitProduct Manual

2
Warnings, Safety information and
Guidance
Important Information
Important: read these instructions fully before the
installation of this appliance
1. Installation of the appliance and accessories must be carried
out by a qualied and suitable competent person and be car-
ried out in clean, dry conditions where dust and humidity are
at minimal levels.
2. All wiring must conform to current I.E.E. Wiring Regulations
and all applicable standards and Building Regulations.
3. Inspect the appliance and electrical supply cord. If the supply
cord is damaged, it must be replaced by the manufacturer,
their service agent or similarly qualied persons in order to
avoid a hazard.
4. The unit is supplied with a mains rated 3 core exible cord
(PVC sheathed, brown, blue and green/yellow 0.75mm²).
5. The appliance must be connected to a local double pole iso-
lation switch with a contact separation of at least 3mm.
6. The appliance must be earthed.
7. HRV2.75 Q Plus, is suitable for 230V ~ 50/60Hz single phase
with a fuse rating of 3A.
8. Control cable access is via the tted cable gland(s) which are
suitable for Ø3- 6mm cable.
9. Control Cable - Unshielded 4 Core 18-24AWG Stranded,
Tinned Copper.

3
10. Control & communication cables should not be placed within
50mm or on the same metal cable tray as any 230V lighting
or power cables.
11. Ensure all cable glands are fully tightened.
12. The unit must be stored in a clean and dry environment. Do
not install the appliance in areas where the following may be
present or occur;
• Excessive oil or a grease laden atmosphere,
• Corrosive or ammable gases, liquids or vapours,
• Ambient temperatures above 40°C or below -5°C,
• Humidity levels above 90% or is a wet environment.
13. The appliance is not suitable for installation to the exterior of
the dwelling.
14. 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.
15. Children should be supervised to ensure that they do not
play with the appliance.
16. Ensure that external grilles are located away from any ue
outlet, in accordance with relevant Building Regulations.
17. The unit must not be connected to a tumble dryer.
18. The unit must not be connected to a cooker hood.
19. Precautions must be taken to avoid the back-ow of gases
into the room from an open ue appliance.
20. Ensure all ducting, condensate drain and associated pipe
work is free from debris and blockages before switching on
the unit.

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Warnings, Safety information and Guidance
Important Information . . . . . . . . . . . . . . . . . . . . . . . .2
Product Overview
Dimensions HRV2.75 Q Plus. . . . . . . . . . . . . . . . . . . . 6
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Controls & Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Filter Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Auto Setback Speed. . . . . . . . . . . . . . . . . . . . . . 8
Continuous Speed . . . . . . . . . . . . . . . . . . . . . . . 8
Boost Speed with Overrun Timer . . . . . . . . . . .8
Summer Bypass . . . . . . . . . . . . . . . . . . . . . . . . . 8
SUMMERboost® . . . . . . . . . . . . . . . . . . . . . . . . . 9
Automatic Frost Protection. . . . . . . . . . . . . . . . 9
Integrated Humidity Sensor . . . . . . . . . . . . . . . 9
Packaging Contents. . . . . . . . . . . . . . . . . . . . . . . . . .10
Installation
Fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Ducting Connections. . . . . . . . . . . . . . . . . . . . . . . . .15
Wiring Connections Access. . . . . . . . . . . . . . . . . . . .16
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . .17
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . .18
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . .20
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . .21
Commissioning
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Control Parameters . . . . . . . . . . . . . . . . . . . . . 22
Continuous Supply & Extract Speeds: . . . . . .23
Boost Supply & Extract Speeds: . . . . . . . . . . .23
Boost Overrun. . . . . . . . . . . . . . . . . . . . . . . . . .24
Humidity Sensor . . . . . . . . . . . . . . . . . . . . . . .24
Controller Reset . . . . . . . . . . . . . . . . . . . . . . . .25
Hardware Reset . . . . . . . . . . . . . . . . . . . . . . . .25
Maintenance
Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . .26
How to Change Filters . . . . . . . . . . . . . . . . . . .27
Cleaning Interior . . . . . . . . . . . . . . . . . . . . . . .28
Cleaning Exterior . . . . . . . . . . . . . . . . . . . . . . . 28
Condensate Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
When this document is
viewed as a PDF the headings
& sub headings on this page
are hyperlinks to the content.
Additionally the page numbers in this
document are hyperlinks back to this
contents page.
Contents

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6
Product Overview
Dimensions HRV2.75 Q Plus
This diagram details the overall sizes of the units and the additional space required
around the units to allow for commissioning and future servicing and maintenance.
All dimensions in millimetres
430
295
426
490
600
715
600
860
300
100
100
Service Void
Service Void
300
DO NOT
‘BOX-IN’ UNIT
DO NOT
‘BOX-IN’ UNIT

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Product Features
The table below lists the models covered by this Product Manual. To nd out what
features your Titon HRV Q Plus has refer to the part number. The part number can
be found on the serial number label xed to the top and front of the unit.
Model
Part
Number
Internal Humidity Sensor Filter Covers Auto Setback Speed Continuous Speed Boost Speed with Overrun Timer Summer Bypass SUMMERboost® Ø150mm Ducting Independent Adjustment of Fans Step-less Fan Speed Adjustment Automatic Frost Protection
HRV2.75 Q Plus TP405HBF 
GB Patent Nos.
GB2469254, GB2470331, GB2470528, GB2470684 GB2491516, & GB2471406

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Controls & Features
The unit is controllable by various volt free switches and sensors. The following
describes the controls and features of the unit and how they are controlled. Ensure
all controls are adequately labelled, indicating their function clearly.
Filter Covers
The units are tted with removable lter covers on the front panel.
Auto Setback Speed
Setback Speed is used to reduce ventilation rates. Setback Speed is automatically
set at the mid point between minimum possible Continuous Speed and the
selected Continuous Speed. The Setback Speed can be enabled by connection of a
volt free one-way switch, or combined with the Boost Speed with the 3 position
switch TP 508.
Continuous Speed
Continuous Speed is the normal continuous extract and supply air ow running
speed of the units.
Boost Speed with Overrun Timer
Boost Speed increases the extract and supply air ow. Boost Speed is congured
with Step-less independent fan controls and includes an Overrun Timer variable
between 0 and 60 minutes. The Boost Speed can be triggered by any device which
provides a volt free one-way switch, such as a PIR, thermostat, humidistat or a
standard one-way switch. If the unit is left Boost (latching switch) for longer than
2 hours the Overun Timer is disabled meaning the HRV will return to Continuous
Speed as soon as the switch holding the unit in Boost is released.
Summer Bypass
Summer Bypass is designed to operate during hot periods where fresh air can be
vented straight into the property without being preheated by the extracted stale
air. Summer Bypass operation is automatically controlled. The Summer Bypass
mechanism diverts the stale air being extracted from the dwelling around the heat

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cell so that its heat energy is not transferred to the fresh air being supplied to the
property.
SUMMERboost®
An optional SUMMERboost® facility is available that allows both the supply
and extract fans to run at full speed whenever the Summer Bypass is activated.
By default SUMMERboost® is disabled by a Link Wire, see Wiring Diagrams.
Removal of the link wire will enable SUMMERboost®.
When SUMMERboost® is trigged by Summer Bypass the increased fan speed can be
prevented either Manually or Automatically.
Manual - This is by means of a volt-free switch wired directly into the controller PCB.
Automatic - This is by means of a dedicated wall mounted room thermostat.
SUMMERboost® will only operate when the temperature has exceeded the
thermostat setting. Should the room temperature fall below the thermostat setting,
then SUMMERboost® will not operate.
Automatic Frost Protection
During very cold weather, Automatic Frost Protection will detect temperatures that
could form ice inside the unit. It will reduce the supply ventilation rate to prevent
ice build up within the heat cell. Automatic Frost Protection reduces the ow rate of
cold air, thus allowing the warmer stale air to raise the temperature within the heat
cell to such a level that prevents the formation of ice. As internal temperatures rise
Automatic Frost Protection will increase the supply ventilation ow rate back to the
commissioned settings.
Integrated Humidity Sensor
Units are tted with an Integrated Humidity Sensor. This continuously monitors
the relative humidity (RH) of the extracted air and triggers Boost Speed when the
relative humidity rises over the set threshold. The Humidity Sensor’s trigger point
is variable from 55%RH to 85%RH and is congured using step-less independent
potentiometer.

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Packaging Contents
Inspect the unit when taking delivery. Check the unit for damage and that all
accessories have been supplied. Each HRV Q Plus unit is supplied with:
Mounting Bracket x 2.
Safety Bracket x 1.
15mm Condensate Drain Olive & Nut x 1.
M6x10mm Pan Head screws x 4.
M6 washers x 4.
Transport Bungs x 4, supplied packed in Duct Ports.
Product Manual x 1.
Any shortages or damage must be immediately reported to the supplier.

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Installation
Fixing
Titon recommend the use of guidance given in the Domestic Ventilation
Compliance Guide 2010 Edition ISBN-978 1 85946 378 9 and Approved Document
Part F 2010 ISBN-978 1 85946 370 3 for all installations in the United Kingdom.
The above documents can be downloaded free from www.
planningportal.gov.uk.
Do not remove the Transport Bungs until connecting ducting. Transport Bungs are
tted to prevent debris falling into the unit and causing blockages and damage:
The Titon HRV Q Plus is designed
to be mounted on a wall or similar.
The mounting surface must be
suciently strong to support the
unit.
Consider the positioning of
electrical services and the
Condensate Drain when siting the
unit.
Ensure there is sucient access
around the HRV Q Plus for future
maintenance.
Do not ‘box-in’the unit making
access to the unit dicult for maintenance and repair.
Transport Bungs highlighted

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The Unit must be mounted plumb and level front to back and side to side.
1. Mark a horizontal line on the wall
using a spirit level. This line will be
approximately 95mm below the
location of the top face of the unit
when tted (excluding duct ports).
2. Use one of the Mounting Brackets
as a template to mark the three
xing hole centres.
3. Drill holes for xings, always use a
xing suited to the wall type.
4. Fix one Mounting Bracket to the
wall ensuring the interlocking side
is at the top, as shown.
Mounting Bracket highlighted

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5. Fix the remaining Mounting
Bracket to the unit using the M6
screws and washers provided,
ensuring the interlock side is at the
bottom. Do not overtighten.
6. Mount the unit by locating the
two Mounting Brackets together.
Ensure a positive location is made
between the two Mounting Bracket
7. The Safety Bracket MUST be tted.
Fix the lower Safety Bracket as
shown using the remaining M6
screw, washer and suitable wall
xing. Packing to be used as
required behind the Safety Bracket
to ensure unit is level. Hook onto
wall bracket
Safety Bracket highlighted

14
Condensate Drain
The unit’s Condensation Drain Pipe must be tted and connected to the dwelling’s
foul water drainage system in accordance with the relevant building regulations.
The Condensation Drain Pipe:
Is attached via a 15mm
compression tting (drain pipe
shown un-insulated for clarity), on
the base of the unit.
Must incorporate a suitable trap,
which must act as an air lock.
Must be adequately secured and be
insulated with the equivalent of at
least 25mm of insulating material
with a thermal conductivity of
0.04 W/(mK) if any part of the pipe
passes though an unheated void.
Should be installed to have a
minimum 5° fall from the unit.
Titon recommend the use of
diaphragm type waste valve in
place of a conventional ‘wet’ trap
which could dry out. Such as, BRE
certicate no. 042/97‘Hepworth
Hepv0 Hygienic self sealing plastic
waste valve’recommended as an
alternative to traditional U-Traps.

15
Ducting Connections
Titon recommend the use of guidance given in the Domestic Ventilation
Compliance Guide 2010 Edition ISBN-978 1 85946 378 9 and Approved Document
Part F 2010 ISBN-978 1 85946 370 3 for all installations in the United Kingdom.
The above documents can be downloaded free from www.
planningportal.gov.uk
Once the unit has been installed and the ducting is ready to connect to the unit,
remove the Transport Bungs from the Duct Ports.
Titon recommend that:
1. Ø150mm ducting is used to connect the HRV2.75 Q Plus.
2. A short piece of exible ducting, approximately 200mm long is used to
connect the unit to the ducting system.
3. Any exible ducting used must be pulled taut.
4. A minimum distance of 200mm between the HRV Q Plus unit and any sharp
bends in duct work.
ENSURE DUCTING IS CONNECTED TO THE CORRECT PORTS
Extract from dwelling
Supply to dwelling
From atmosphere
To atmosphere
240V. AC
ENSUREDUCTING IS CONNECTED TO
THECORRECT PORTS
Extractfrom dwelling
Supplyto dwelling
Fromatmosphere
Toatmosphere
front

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5. Ducting should be insulated where it passes through unheated areas and
voids with the equivalent of at least 25 mm of a material having a thermal
conductivity of ≤0.04 W/(m.K) to reduce the possibility of condensation
forming. Where a duct extends externally above roof level the section above
the roof should be insulated or a condensate trap should be tted just below
roof level.
6. Ducts within the building heated envelope between the external terminals and
the unit’s From Atmosphere and To Atmosphere ports should be insulated and
wrapped additionally with a vapour barrier outside the insulation.
7. Where ducts pass through re barriers, they must be appropriately re stopped
in accordance with the requirements of Part B of the Building Regulations (for
England & Wales).
8. A ducting condensate drain must be tted to vertical To Atmosphere duct
work.
9. Ducting must be installed in such a way that resistance to airow is minimised.
10. Ducting connected to the From Atmosphere & To Atmosphere ports, must be
to the external air outside the building envelope.
11. All ducting joints including those to the HRV Q Plus unit’s Duct Ports must be
permanently sealed with tape and/or an appropriate non-hardening sealant
and/or Jubilee clips or similar. Do not distort ducting or Duct Ports by over
tightening clips.
12. A minimum distance of 2m exists between the external supply and exhaust
terminals.
13. Units have temperature sensors tted to ports marked with a Caution label.
DO NOT insert duct into the duct ports. If ducting is inserted the sensor
readings will be adversely eected compromising the units performance and
could aect the product warranty.
Wiring Connections Access
Access to Boost and other volt free control functions is via the hinged cover on the
top of the unit, at the front. For access for service and maintenance remove the
whole cover.

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Wiring Diagrams
Double Pole Isolator Fuse
L
N
L
N
Mains cable must be separate
from the communication cables.
See Important Information.
Supply wiring diagram 230V~50Hz ref EE141
Volt-free boost switching of MVHR
controller PCB using single-pole
switches TP 502, TP 503, TP 507
and / or TP500 / TP501 humidistat.
There is a maximum of 10 single
pole switches or humidistats
that can used. TP500/TP501
Humidistat
12 3
Boost switching and Humidistat connection ref EE173

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Wiring Diagrams
Three Position Rotary Switch TP 508 switching and connection ref EE175
SWITCH POSITIONS
1 - Setback Speed
2 - Continuous Speed
3 - Boost Speed
L U1 U2 U3
TP 508
Three position rotary switch
Setback Mode switching and connection ref EE177
Volt-free setback switching of MVHR
controller PCB using single-pole
latching switch and / or volt-free
normally open relay contacts.
To avoid the unit being inadvertently
left in Setback Mode, it is recom-
mended that only one latching switch
is tted.
Volt-free setback switch or
normally open relay contacts

19

20
Wiring Diagrams
SUMMERboost® Link Wire
SUMMERboost® Link Wire must be
removed to enable SUMMERboost®.
SUMMERboost® Link Wire