Installation Guide
Single Zone Thermostat
Y87RF
1.
Disconnect the mains power from the Heating Appliance.
To ensure your safety, always make sure mains
power is switched off before accessing wiring.
3.
Mount the wiring plate
to the wall or wallbox.
Note: the plugs and mounting
screws required are supplied.
4.
Connect the Boiler Relay wiring.
Please refer
to wiring
diagram
(right).
2.
Remove the wiring
plate from the
Boiler Relay.
2.1 Carefully press a
screwdriver into the
opening until the
cover comes free.
2.2 Tilt the cover upwards
and remove it.
5.1 Wiring for a basic boiler (not requiring a pump overrun).
The boiler relay powers the boiler live input.
230V
50-60Hz
<5A
N L
N L
L
BDR91
Place link here
A-B:5(3)A
A-C:5(3)A
A B C
L
N
230V
50-60Hz
<5A
N L L
BDR91
A-B:5(3)A
A-C:5(3)A
A B C
L
N
N L
5.2 Wiring for a boiler that requires a permanent live.
For use with a boiler that requires a permanent live
(a typical Combi boiler wiring). This can be used for
boilers with low voltage or 230Vac room thermostat
inputs. Please check manufacturer’s instructions.
5.3 Wiring for a two-port zone valve.
For use with a boiler that requires a permanent live.
Please check manufacturer’s instructions.
230V
50-60Hz
<5A
N L L
BDR91
V4043H
A-B:5(3)A
A-C:5(3)A
A B C
L
N
BL BR
M
GR O
G/Y
G/Y: Green/Yellow
Earth wire
BL: Blue Motor Neutral
BR: Brown Motor Live
GR:
Grey End
switch (if used)
Permanent Live
O:
Orange End
switch (If used).
In wired system
this typically
feeds the boiler.
continued overleaf
7.
Reconnect the mains power to the Heating Appliance.
8. Locate the thermostat.
• Away from draughts
• Away from heat sources
• Away from direct sunlight
• Positioned about 1.2m – 1.5m from the floor
6.
Attach the Boiler Relay
to the wiring plate.
Locate hinges first
Hinge the housing downwards
and click into place.
Manufactured for and on behalf of the
Environmental and Combustion Controls
Division of Honeywell Technologies Sàrl,
ACS-ECC EMEA, Z.A. La Pièce 16,
1180 Rolle, Switzerland by its Authorised
Representative Honeywell Inc.
Need help? For assistance please visit:
www.honeywelluk.com
Honeywell Control Systems Ltd.
Skimped Hill Lane, Bracknell, Berkshire
RG12 1EB
WEEE Directive
2012/19/EC
Waste Electrical
and Electronic
Equipment directive
• At the end of the product life dispose
of the packaging and product in a
corresponding recycling centre.
• Do not dispose of the unit with
the usual domestic refuse.
• Do not burn the product.
• Remove the batteries.
• Dispose of the batteries according to
the local statutory requirements and
not with the usual domestic refuse.
Approvals
Conforms to protection requirements
of the following directives:
EMC: 2004/108/EC
LVD: 2006/95/EC
R&TTE: 1999/05/EC
Hereby, Honeywell, declares that this
Single Zone Thermostat is in compliance
with the essential requirements and other
relevant provisions of Directive 1999/5/EC.
Installation instructions
Power
supply from
fused spur
To heating appliance
1,5-2,5mm
2
max 6mm
>7mm 0
<7mm 0
32301889-001 A
