Introduction; Description - Baxi Combi Instant 80e Installation & Servicing Instructions Manual

Case Front Panel
Control Box
Fig. 1
Data Badge

1.0 Introduction

1.1

Description

1. The Baxi Combi Instant 80e or 105e is a fully
automatic gas fired wall mounted combination boiler.
It is room sealed and fan assisted, and will serve
central heating and mains fed domestic hot water.
2.The unit incorporates a small storage cylinder built
into the boiler providing hot water the moment the tap
is turned on.
3. The boiler is set to give a maximum output of 24.0
kW (Instant 80e) or 31.0 kW (Instant 105e).
4. It is designed for use on Natural Gas (G20) and
can be converted to use Propane (Instant 80e and
105e) or Butane (Instant 80e only).
5. The boiler is suitable for use only on fully pumped
sealed heating systems. Priority is given to domestic
hot water.
6. The boiler data badge gives details of the model,
serial number and Gas Council number and is
situated on the control box. It is visible when the case
front panel is removed (Fig. 1).
7. The boiler is intended to be installed in residential /
commercial / light industrial E.M.C. environments on
a governed meter supply only.
8. The boiler must be installed with one of the
purpose designed flues such as the standard
horizontal flue kit, part no. 247719.
9. All systems must be thoroughly flushed and
treated with inhibitor (see section 6.2).
1.2 Instant Domestic Hot Water
(Expansion Vessel & Pre-Heat Store)
1. The boiler expansion vessel incorporates a small
volume of stored primary hot water.
2. When the boiler has been off and there is then a
demand for domestic hot water the stored primary
hot water ensures that domestic hot water is supplied
instantly at temperature.
3. The stored hot water is part of the primary circuit.
This is not supplied as domestic hot water, which is
fresh mains water heated by a heat exchanger within
the boiler.
4. The stored primary hot water temperature is
maintained whilst the boiler is in operation. During a
period when there is no demand for heating or hot
water the temperature of the stored primary hot water
will eventually fall. The boiler will operate
occasionally in order to maintain the temperature.
This is indicated by the domestic hot water mode
neon flashing.
1.3 Optional Extras
Various flue extensions, bends, vertical flue
kits,control accessories etc. are availble as optional
extras. These are detailed in a separate publication.
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