Honeywell ATC928 Evohome Connected Multi Zone Room Thermostat Installation Guide
evohome Installation Guide
45
Two-port zone valve
Figure 7ꢀConnecting a
two port zone valve
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. When a wireless
relay box is fitted the end
switch is not required.
A-B:5(3)A
A-C:5(3)A
BDR91
230V
50-60Hz
N L L A B C
<5A
L
N
G/Y
BL BRGR
M
O
V4043H
!
If connecting a two
port zone valve with
an unvented cylinder
connection for a high
limit thermostat, the
'L' permanent live
feed must be broken
when high limit cutout
activates on the
insertion thermostat.
C
o
n
n
e
c
t
i
n
g
a
n
O
p
e
n
t
h
e
r
m
b
r
i
d
g
e
Figure 8ꢀWiring an
OpenTherm Bridge to
an OpenTherm boiler.
Opentherm bridge
Opentherm equipped boiler
Opentherm input on the boiler ONLY.
Do not connect to the room thermostat
terminals
| General | Details |
|---|---|
| Name | Honeywell ATC928 Evohome Connected Multi Zone Room Thermostat Installation Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.53 MB |
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