Technical data

43
STRATA1
Remote Fault
Indication
The Strata 1 boiler includes a built in fault
alarm relay with volt free contacts for interface
with, if required a remote alarm indicator.
The volt free contacts within the boiler
control panel will close in the event that the
boiler goes to a fault resulting in boiler lockout.
The volt free contacts indicate “common alarm”
upon closing. The actual fault description will be
displayed upon the LCD screen of the boiler.
Connection to the volt free contacts is made
via an alarm plug and lead assembly available
from MHS Boilers Ltd.
The alarm plug and lead connects to socket
x9 located in the lower area of the boiler
control panel.
X9 Socket
12
X9 Alarm Plug
& Lead Assembly
Remote
Alarm Circuit
19.0 commissioning
the Strata 1 boiler
The Strata 1 boiler should be expertly commissioned by a competent engineer who will need, in addition
to standard hand tools, a U tube manometer and a combustion analyser.
Before attempting to set the Strata 1 boiler to work, the following check list must be worked through.
See 19.1.
18.1
0-3/0-10 volt control
The Strata 1 can be operated via 0-3 volt or 0-10 volt control. The connection details are shown in fig 22.
For further details on 0-3 or 0-10 volt control please contact the Technical Department.
A1 A2
R3
R1
R2
0v V+
Nr: 4
Weiland Plug
To Boiler Socket Nr: 4
0-10 volt Adapter
Weiland Connection Plug
Nr: 4
0-3 volt control direct to boiler plug
Nr: 4 without adaptor.
0-10 volt control via 0-10 volt adapter
(optional extra).
Fig. 22