-33-
VOLT FREE RELAY KIT 55000405
This kit is for use on 550 series outdoor units and will provide a volt free alarm signal to other equipment.
ITEM
QTY
DESCRIPTION
ITEM
QTY
DESCRIPTION
1
1
Relay
7*
1
Terminal 4 Way
2
2
Screw No. 6
8*
1
End Plate
3
1
Orange Wire
9*
2
Yellow Wire
4
1
Blue Wire
10*
1
Terminal Marker 'A'
5
1
Double Spade
11*
1
Terminal Marker 'B'
6
3
Cable Tie
* Items 7 to 11 are supplied sub
ISOLATE THE UNIT ELECTRICALLY PRIOR TO INSTALLATION OF THE KIT
1
Release six retaining screws and remove the lid.
2
Release two retaining screws in the front access panel and remove.
3
On single fan units, release the retaining screw on the right hand side and remove the
mains terminal cover.
4
With relay terminals facing the left, secure the relay to the two holes in
the base of the electrics tray (below the contactor) (Fig. 1).
Move the earth clips to the left if necessary.
5
Loosen the end clamp on the terminal rail and slide to create a gap.
With the yellow wires uppermost, fit the four way terminal between the existing terminals
and the end clamp.
Slide the end clamp to close the gap and tighten the screw.
Fig.1.
VOLT FREE RELAY WIRING, (Fig. 2)
Note: Terminals 11 - 14 close on active alarm, terminals 21 - 22 open on active alarm.
6
Yellow wires:
Connect from the 4 way terminal to the terminals on the relay (Fig. 3).
7
Orange wire:
Connect from terminal 5
on the terminal block to terminal
b
(
A2
) on the relay.
8
Blue wire:
Connect between terminal
a
(
A1
) on the relay and, using the double spade terminal, to the fan motor
capacitor terminal with the blue wire(s) connected to it (blue and white wires on MCU without head pressure
control).
9
Secure the wires to the existing harness using cable ties.
11- 14 Contacts
close
on
active alarm
21- 22 Contacts
open
on
active alarm
Fig. 2.
Fig. 3.
(viewed from terminal end)
--o--o--O--O--O--o--o--
Heronhill - for all your IMI requirements
Tel: 01823 665660
www.heronhill.co.uk
Fax: 01823 665807
