Installation; Location; Flue Systems - andrews RFF190 Installation Manual, Operation And Service Manual

SECTION 3
INTRODUCTION

LOCATION

FLUE SYSTEM
RFF190 &
RFF280 FLUE
FITTING
INSTRUCTIONS
6

INSTALLATION

THE LAW REQUIRES THAT INSTALLATION IS CARRIED OUT BY A PROPERLY
QUALIFIED PERSON
Install in accordance with current British Standard Code of Practice 342 part 2 and British
Standards 5440, 5546, 6644, 6700, 6798 and 6891.
The location chosen for the heater must permit the provision of a satisfactory flue and an
adequate air supply.
The heater must not be installed in a room which contains a bath or a shower and must
not be installed in a bedroom or bedsitting room.
A clearance of 3OOmm (l2in) should be left around the heater for fitting and servicing
purposes and 762mm (3Oin) above the heater for removal of the flue baffle. The above
clearances are recommended for ease of servicing. They can be reduced if necessary but
a clearance of 3OOmm (12in) must be left in front of heater for access to the burner and
controls. The flue baffle clearance should also be maintained if possible to avoid servicing
problems.
The floor on which the heater is installed must be flat, level and of sufficient strength to
withstand the weight of the heater when filled with water, and should satisfy the
requirements of the Local Authority & Building Regulations.
Any combustible material adjacent to the heater must be so placed or shielded as to
ensure that its temperature does not exceed 65ºC (150ºF).
Detailed recommendations for flueing are given in British Gas booklet IM/11 and BS
5440 part 1. The following notes are intended to give general guidance:
• Route. The route of the flue is not critical but, when planning horizontal runs,
potential condensate traps must be avoided.
When calculating maximum flue runs, a reduction must be made of 1 metre run per
1
90° elbow and a / metre run per 45° elbow.
2
• Location. The siting of the flue terminal is not critical with respect to the performance
of the unit. However, areas where the discharge of combustion products would cause
a nuisance should be avoided.
In accessible positions a suitable guard should be provided.
1. Fit spigot adaptor E4 to heater flue spigot in the direction shown. Note! Fire resistant
silicon sealant should be used on this joint.
2. Fit elbow E3 into spigot adaptor E4 for horizontal flue routes or E2 for vertical flue
routes.
3. Fit flue pipe into E2 to give required length of flue route. Refer to manual for
maximum horizontal and vertical flue routes.
4. Determine correct position and fit outer wall plate using 4 screws and rawplugs
provided. Cut flue sleeve to suit wall thickness and fit flue pipe through wall to outer
wall plate. Fit inner wall plate and fix using 4 screws and rawplugs provided.
5. The lengths of flue pipe may be cut to obtain correct length of flue route required.
6. On vertical flue installations it is important to fit the correct flue terminal E4 supplied
by Andrews Water Heaters.
7. For further information contact Andrews Technical Dept.
E3
E2
E4
E2
E2
E2
E1
E5
Components
supplied
in Flue Kit