mains electricity, should be so situated that it cannot be touched by a person using the
bath or shower. The Q37 and Q37P are classified as IP20 (IPX0) and are therefore
suitable for installation in Zone 3 areas, unless subject to hose down.
Compartment installation is permitted - such compartments must be constructed in
accordance with BS 6798.
The wall on which the boiler is mounted must be of suitable load bearing capacity and
must be non-combustible.
The Keston Q37 can be located virtually anywhere desired provided that all regulations
are complied with. Because of the boiler's compact size and venting flexibility, the
installation is not limited to a boiler room setting. Before locating the boiler near a living
space consider whether the sounds generated by the boiler will be objectionable. The
boiler may be located within a cupboard enclosure to reduce noise levels if located within
a living space. LPG boilers must not be installed in a cellar.
3.4
ELECTRICAL
3.4.1
Electrical Connections
The boiler must be connected to a permanent 230V ~ 50Hz supply, fused at 3A.
The boiler can be wired to a single switched live 230VAC input. However,
the boiler has TWO thermostats, and will therefore accept up to TWO
switched live 230VAC signal inputs, such as heating and hot water or
radiators and underfloor heating zones. 2nd STAT demand will always take
priority over a 1st STAT demand. Alternatively, a Keston Room Controller
can be connected directly, via two core low voltage cable, to the terminals
marked “OT”. The Keston Room Controller will then provide fully room
compensated control to ensure the boiler output is matched to the rooms
requirements at optimum boiler efficiency. This is only recommended for
heating only applications. Wiring external to the boiler must be in accordance
with current I.E.E wiring regulations and local regulations.
WD500
Chapter 3 - Boiler Location
The Keston Q37 & Q37P Boilers
Installation & Servicing Instructions
Page : 11
Chimneys not used for
venting any other
appliance may be used.
Figure 3.3
Secure air & flue pipes at
chimney outlet.
[NB: Refer to
Section 3.8.3]