22
EVOMAX - Installation & Servicing
INSTALLATION
26
SEQUENCER CONTROL OF MULTIPLE BOILERS
In installations where the heat load is greater than the
boiler capacity an ideal solution is to use multiple boiler
arrangements.
The ideal way to control a multiple boiler installation is
with our modulating sequencer
See below a typical installation with our modulating
sequencer kit. This device is capable of controlling up to
5 boilers.
Legend
1. Non-return valve
2. Safety valve
3. Service valve
4. Mixing header
5. System pump
6. Modulating Sequencer kit complete with
outdoor sensor and ow sensor
INSTALLATION
7. Flue gas terminal
8. Drain cock
9. Shunt pump
10. Room Sensor
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3
2
1
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9
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6
4
6
10
6
7
5
206210-10275
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The condensate trap provided within the hardware pack must be
connected to the condensate drain on the bottom of the boiler and
then connected to a drainage point, preferably within the building.
The pipe size from the condensate trap is 25mm.
The routing of the drain must be made to allow a minimum fall of 1
in 20 away from the boiler, throughout its length.
IMPORTANT. Any external runs must be kept to a minimum
and insulated. This is to avoid freezing in cold weather causing
blocking.
All pipework and ttings in the condensate drain system must be
made of plastic. No other materials may be used.
Ensure condensate trap is full of water before lighting.
27
CONDENSATE DRAIN
206210-3.indd 22 09/06/2011 13:34:26
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