1
MAXIN 24e & 28e
These appliances are designed for use with
a sealed heating system only and are not
intended for use on an open vented system.
The provision of stored domestic hot water is
possible by the addition of an indirect cylinder
with 'S' or 'Y' plan controls.
A range-rating facility is incorporated in the
boiler for the central heating system in
conjunction with the electronic burner modu-
lation. The domestic hot water (dhw) service
utilises a differential water pressure control
combined with a 3 port diverter valve to give
hot water priority.
The Vokèra MAXIN 24e & 28e are combined
central heating and domestic hot water
appliances. By design they incorporate full
sequence electronic ignition, circulating
pump, expansion vessel, safety valve, tem-
perature gauge, pressure gauge and 3 port
diverter valve.
They are produced as a room sealed appli-
ances suitable for wall mounting applications
only. They are provided with a fan powered
flue outlet with an annular co-axial combus-
tion air intake which can be rotated through
360 degrees. A vertical & twin flue option is
available, and they are also suitable for S.E.
duct installation.
SECTION 1 INTRODUCTION
Fig.1 General Layout
1
Flue Outlet
2
Air Intake & Restrictor Ring
3
Pressure Differential Switch
4
Silicone Pressure Tubes
5
Expansion Vessel
6
Main Heat Exchanger
7
Flame Sensing Electrode
8
Spark Electrode
9
Automatic Air Release Valve
10
Pump
11
Safety Valve
12
Domestic Heat Exchanger
13
Domestic Microswitch
14
Ignition Reset Button
15
Central Heating Temperature Control
16
Hot Water Temperature Control
17
Mode Selector Switch
18
Timeclock Aperture (optional)
19
Temperature/Pressure Gauge
20
Temperature Sensor (thermistor)
21
Diverter Valve
22
Domestic Distribution Manifold
23
Flow Switch (boiler)
24
Gas Valve & Ignition Control
25
Fan Overrun Thermostat
26
Safety Thermostat
27
Modulator Coil
28
Main Burner
29
Combustion Chamber
30
Fan Assembly
31
Air Chamber (with front removed)
32
Flue Gas Analysis Test Point
1
2
3
4
5
6
7
8
9
10
11
12
13
17
16
19
18
22
23
24
26
25
27
28
29
30
31
32
14
20
21
15
Содержание Maxin 24e
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