Supplied By www.heating spares.co Tel. 0161 620 6677
1
UNICA BHE
INTRODUCTION
General layout (fig. 1)
1
Electrical connection box
2
Safety valve
3
Three port valve actuator
4
Domestic hot water heat exchanger
5
Pump
6
Bottom auto air vent (AAV)
7
Condense trap
8
Return sensor
9
Expansion vessel
10 Fumes thermostat
11 Flue gas analysis test point
12 Flue outlet & air intake
13 Ignition transformer
14 Top AAV
15 Flow sensor
16 High limit thermostat
17 Sensing Electrode
18 Spark Electrode
fig. 1
The Unica BHE is a high-efficiency combination boiler with
an output to DHW of 32kW. This appliance – by design –
incorporates electronic ignition, circulating pump, expansion
vessel, safety valve, pressure gauge and automatic by-
pass.
The Unica is produced as room sealed, category II2H3P
appliances, suitable for internal and external wall mounting
applications. Each appliance is provided with a fan powered
flue outlet with an annular co-axial combustion air intake
that can be rotated – horizontally – through 360 degrees for
various horizontal or vertical applications. The Unica BHE
can also be used with the Vokera twin flue system.
The Unica BHE is approved for use with B23, C13 & C33
type flue applications.
These appliances are designed for use with a sealed
system only; consequently they are not intended for use
on open vented systems.
This booklet is an integral part of the appliance. It is
therefore necessary to ensure that the booklet is handed
to the person responsible for the property in which the
appliance is located/installed. A replacement copy can be
obtained from Vokera customer services.
There are no banned substances used in the manufacture
of these appliances.
19 Top AAV pipe
20 Condensate level sensor
21 Cylindrical Burner
22 Main heat exchanger
23 Fan assembly
24 Mixer
25 Injector
26 Pressure switch
27 Domestic hot water sensor
28 Gas valve
29 DHW flow switch
30 Pressure gauge
R
Heating return connection
F
Heating flow connection
G
Gas connection
O
Hot water outlet
I
Cold water inlet
R
F
O
I
G