3
E
2
2
1 14
C
15
12
E
N
N
LSL
L
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
N
N
N
N
Room Thermostat
Models TRT030
TRT031/32
TRT033
TRT035
Neutral not
required on
TRT033 and TRT035
WIRING CENTRE TRT049
Note: Links shown
should be made by
the installer
Cylinder Thermostat
Model TRT044
Boiler Pump
Optional Frost Stat
Model TRT031
Programmer
Models: TRT034
TRT036
HW
OFF
HW
ON
CH
ON
CH
OFF
HWS
(NO)
HWC
(NC)
A/C Mains in
(5 Amp fuse)
E
E
E
E
L N
N
E
E
11
11 12
E
10 9
8
6
7
4
6
7
N
N
E
N
E
13
L N
N
E
E
N L 1 2 3 4
N L SL
HW Motorised Valve
CH Motorised Valve
Brown (L)
Brown (L)
Orange CH Call (C)
Orange CH Call (C)
Grey HW (NO)
Grey HW (NO)
Yellow/Green
Yellow/Green
Blue (N)
Blue (N)
2. Installation
This product must be installed in accordance with the appropriate
building and wiring regulations.
In all cases if there is a doubt as to how to proceed with an
installation consult a qualified electrician, your local authority’s
building control department or the Timeguard helpline
(020 8450 0515).
Always isolate the mains supply before removing the cover from
the TRT049.
The TRT049 is designed to be surface mounted.
Isolate 230VAC mains supply.
Remove front cover from unit, by undoing the 4 retaining screws.
Fix back plate securely to the wall, using the 2 screws (and wall
plugs) provided. The cable knockouts should be at the bottom.
Remove the required break-offs from the bottom edge or
knock-outs from the rear to accommodate the cables (a mixture
of rear and bottom entries can be used if appropriate).
Allow sufficient excess cable to wire up the unit, but not too much
to make it difficult to close the cover.
Connect the conductors to the relevant terminal, according to the
wiring diagrams below.
If earth continuity is required, please use the earth terminals on the
right hand side.
Restore mains to the unit after checking all system wiring is
complete and replacing cover.
Contents
TRT049 Wiring Centre
5 x wire link
2 x wall plugs
2 x screws
1 x circuit identification label
1. Introduction
The TRT049 is a cost effective and stylish wiring centre, with plenty
of wiring space, and easily accessible terminals. There are cable
clamps to secure incoming and outgoing cables. It is designed for
internal use only. Wiring centres simplify installation and make
checking the circuit easier. This wiring centre is suitable for all
popular heating systems.
Wiring diagrams are supplied for the two most popular, S-plan
and Y-plan.
This guide assumes that the installer can identify the required
leads from the boiler, pump and other controls.
The electrical supply must be isolated before removing the
front cover.
Cover fixing screws Tough plastic enclosure
Fig. 1
TRT049 Wiring Centre Front View
2 Port Motorised Valve System (S-Plan)
12345
12 45
678
78
9 10111213141516
14 16
EE
N
L
Cable
clamps
Fig. 1a
TRT049 Wiring Centre Inside View
TRT049 Wiring Centre Rear View
Cable entry
knock outs
Multiple fixing
holes
Earth
terminals
Wiring
terminals
Fig. 1b
BM049
MAX CURRENT 10A
230V ~ 50Hz
TRT049_200x120_Instructions.indd 1TRT049_200x120_Instructions.indd 1 15/6/09 14:19:4115/6/09 14:19:41
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