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removed for maintenance. 

IMPORTANT: Be careful to avoid joists and hidden pipes or 

cables

.  

3. 

Remove the Back Box pieces by removing the four screws (

fig 5)

. Replace it with the Frame 

from the Flush Mount Kit. 

4. 

Pass each of the long Panel Clip Screws 

(fig.6) 

supplied in the kit fully through the flange of 

the Chassis and screw in to the four Panel Clips allowing enough space between the clip and 
the flange for the thickness of the panel (so that the clips can spring open behind the panel).

 

 

5. 

Set-up the appropriate speed selection and other features as outlined in 

Section B SETUP.

 

6. 

Remove the Terminal Block Cover in the top right corner (

fig 3

). 

7. 

Attach the ducting to the Spigot and locate the fan into the hole in the panel, ensuring the 
cable is fed into the fan Chassis and the Panel Clips spring out behind the panel.  

8. 

Secure into position by carefully tightening the four Panel Clip Screws. 

IMPORTANT: If 

power tools are used, set them to the minimum torque setting or preferably use a 
manual screwdriver. Do not over tighten.

 

9. 

Select and follow the appropriate wiring diagram in 

Section C WIRING.

 

10.  Replace the Terminal Block Cover. 
11.  Ensure the Impeller rotates freely (

fig.3

). 

12.  Replace the Front Cover Assembly and tighten the two screws (

fig.

2). 

13.  Make sure that all covers are on correctly to ensure the optimum performance and water 

ingress protection of the fan. 

14.  Switch the mains power supply on and check the fan is operating correctly. 
 
 

B. SETUP

 

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE 
ISOLATED FROM THE POWER SUPPLY DURING INSTALLATION OR 
MAINTENANCE. 

 

 
1. OPERATION 

i. 

As standard, the 

HTP models

 will run continuously at trickle speed until either the 

pullcord, LS or humidistat call for boost speed. To disable the constant trickle option, 
remove the cover over the PCB to the right of the impeller, and remove the link wire 
between terminals 4 and 5 on the PCB (

fig.7

)

.

  

ii. 

The pullcord on the 

DP models

 will cycle between off, trickle and boost. The LS will switch 

between boost and the previous state selected by the pullcord (either off, trickle or boost). 
If you want to just use the LS to switch the DP model between trickle and boost, first set 
the fan running to trickle speed with the pull cord, then remove the pull cord string. 

iii. NOTE: 

P and T models do not have a trickle speed

. These models can only switch from 

off to the boost speed selected during setup (see 2. SELECTING THE BOOST SPEED).  

iv. 

To set the P model to run at boost speed constantly, (whenever power is connected to the 
fan), set the pull cord to the on position and cut or remove the string. You will need to 
replace the cover and turn the fan on to determine which is the on position of the pullcord. 

v. 

To set the T model to run at one of the boost speeds constantly, (whenever power is 
connected to the fan), link the L & LS terminals of the mains terminal block together (

fig.4

). 

 

2. SELECTING THE BOOST SPEED.

 (See Technical Specifications on page 2). 

This will determine the speed at which the fan will run when activated by either the pullcord, LS, 
or relative humidity sensor depending on the fan model. The speed is factory set to kitchen.  
 

For the T, HTP and DP models (NOT the P model): 

i. 

Link terminals 1 and 3 for Utility boost speed. 

ii. 

Or link terminals 2 and 3 for Kitchen boost speed. 

IMPORTANT: Do not link across terminals 1 and 2. 

Summary of Contents for Centrif Duo DP 25 63 20C

Page 1: ...ef N Centrif Duo P 25 61 20C Centrif Duo T 25 62 20C Centrif Duo DP 25 63 20C Centrif Duo HTP 25 64 20C Centrif Duo Plus P 43 16 13A Centrif Duo Plus T 43 16 14A Centrif Duo Plus DP 43 16 15A Centrif Duo Plus HTP 43 16 16A Centrif Duo Centrif Duo Plus Installation and Wiring Instructions Centrif Duo Plus Centrif Duo ...

Page 2: ...y Washable filter available separately for Centrif Duo Plus Pullcord Trickle speed LS connection to boost from a remote switch from off T DP HTP or trickle speed DP HTP only Two boost speed options available selectable during installation Adjustable timer overrun 1 30 mins approx Adjustable humidity sensor default 60 RH approx ...

Page 3: ... be used where it is liable to be subject to direct water spray for prolonged periods of time I Where ducted fans are used to handle moisture laden air a condensation trap should be fitted Horizontal ducts should be arranged to slope slightly downwards away from the fan J This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or la...

Page 4: ...hat there is sufficient space for the product to be installed and that the Filter fig 3 can be removed for maintenance 3 Insert the wall sleeve with the larger diameter sleeve on the room side and cement the ends into position flush with the wall faces The wall sleeve should be angled downwards away from the fan to allow any condensation to drain to the outside 4 Outside Grille Using the Grille s ...

Page 5: ...STALLATION OR MAINTENANCE 1 OPERATION i As standard the HTP models will run continuously at trickle speed until either the pullcord LS or humidistat call for boost speed To disable the constant trickle option remove the cover over the PCB to the right of the impeller and remove the link wire between terminals 4 and 5 on the PCB fig 7 ii The pullcord on the DP models will cycle between off trickle ...

Page 6: ...ty adjuster fig 4 7 CLOCKWISE This makes the fan less sensitive to RH i e the fan will come on at a higher RH The fan will continue to run at boost after the RH has dropped below the set point for the time period set by the timer adjustment see 3 TIMER ADJUSTMENT above C WIRING WARNING THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING INSTALLATION OR MAINTENANCE...

Page 7: ... lubrication Fig 1 Backdraught shutter assembly Flaps vertical Spigot Fig 2 Centrif Duo Plus Centrif Duo Cover Assembly Cover Screws Retaining edge for optional filter Centrif Duo Plus only Insert flat bladed screwdriver in here and pull Filter out to remove it ...

Page 8: ...f Duo models have a metal mesh filter clipped on to the rear of the cover It can be removed easily and washed too Fig 4 Terminal Block Cover Cable Clamp Terminal Block Timer Adjustment T and HTP models only Turn clockwise to increase overrun timer length Humidity Adjustment HTP models only Turn clockwise to raise set point decrease sensitivity ...

Page 9: ...9 Fig 5 Frame from optional Flush Mount Kit 4 screws Back Box Fig 6 Panel Clip Screw 4 off Panel Clip 4 off Chassis ...

Page 10: ...10 Terminals Å1 Å2 Å3 Å4 Å5 See page 5 Section B Set Up Timer adjustment Humidity adjustment Fig 7 Setup HTP model shown PCBs may vary in look ...

Page 11: ...11 Fig 8 Siting of the fan 3 2 ...

Page 12: ... Axia Ltd Fleming Way Crawley RH10 9YX abc Head Office Fleming Way Crawley West Sussex RH10 9YX Tel 01293 526062 Fax 01293 551188 UK NATIONAL CALL CENTRE Newton Road Crawley West Sussex RH10 9JA SALES ENQUIRIES Tel 0844 8560590 Fax 01293 565169 TECHNICAL SUPPORT Tel 0844 8560594 Fax 01293 532814 441678 F 0909 N L Ls 1 Phase Supply 220 240V 50 Hz 3A Fuse Pull Cord Lamp 3 Pole Isolator Switch Ceilin...

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