Operating instructions

Page 5
Victrix Zeus 20/27 Instructions
Gas Supply
The meter and supply pipes must be sized to deliver the gas rate and pressure given on page 3. The
boiler requires at least a 22 mm (3/4”) gas supply pipe. The complete installation, including the meter, must
be tested for gas soundness and purged as described in IS 813:2002.
Electrical Installation
The boiler requires a 220/240 V ~ 50
Hz mains supply, fused at 3 A. The
boiler must be earthed. The polar-
ity of the supply must be correct as
otherwise the boiler will not operate
properly.
There must only be one common iso-
lator, providing complete electrical
isolation, for the boiler and any
external controls. Using PVC
insulated cable not less than 0.75
mm² (24 x 0.2 mm) to BS 6500
Table 16, the boiler should be
connected to a fused three pin plug
and unswitched shuttered socket out-
let (both complying with BS 1363), or
a fused double pole
switch with a contact separation of
at least 3 mm in both poles.
Wiring external to the boiler must
be in accordance with the current IEE
Wiring Regulations.
Note: External controls connected to the boiler must be of the volt free type and are connected to
terminals 40 and 41 as shown above.
Weather Compensation
A temperature sensor for outdoors is available as an optional accessory for the boiler. This should be fitted
in an outdoor location which is not exposed to direct sunlight. A north facing wall is a good location.
If the optional weather compensation sensor is used, it should be connected to terminals 38 and 39 as
shown above using a two core cable. If this cable is routed in close proximity to cables carrying mains volt-
ages, then screened cable should be used. Contact RVR for more information.
When the sensor is connected, the boiler adapts it’s flow temperature to suit the prevailing weather condi-
tions. This results in lower energy usage and enhanced comfort.
WARNING ! - Connection of a voltage to any boiler terminals other than the mains
lead will result in destruction of the boiler control panel. The product warranty
does not cover this type of damage.
Clearances and Air Supply
The boiler does not require any air vents for cooling in the room in which it is installed or when installed in a
cupboard or compartment. The minimum clearances for servicing must always be maintained. Please see
table on page 3. Note: A cupboard or compartment used to enclose the boiler must be designed and con-
structed specifically for the purpose.
General Installation Information
Optional Immergas
Remote controller
(CAR)
Replace link with volt free
contact from CH controls.
Do not connect 220V!
External weather com-
pensation sensor