Description - Dimplex ASCARI MA 12 Installation And Servicing Instructions

• The heating system must be installed by a competent person and to current regulations in force at the time.
• All wiring should conform to the regulations in force at the time. The appliance is approved to a protection
rating of IPX1. Therefore if the appliance is to be installed in a room containing a bath or a shower, any
electrical switch or control utilising mains electricity must be so situated that it cannot be touched by a
person using the bath or shower. Attention is drawn to the requirements of the current BS 7671 (I.E.E.
Wiring Regulations) and in Scotland the electrical provisions of the Building Regulations applicable in Scotland.
• Complete all plumbing work before connecting ther boiler to the electricity supply.
• this appliance must be earthed !
• The boiler should be permanently connected to the electricity supply, direct from a 63A fused supply on the
consumer unit via a double pole linked switch with minimum contact gap of 3mm. No other appliances
should be powered from this supply.
• The expansion vessel is pre-charged to 1 bar (0.1MPa). During the installation process and before operating
the boiler this should be checked using a suitable pressure gauge.
• A 3 bar (0.3MPa) pressure relief device is incorporated within the product, the cold system pressure should
not exceed 1.5bar (0.15MPa).

1.3 - Description

1.3.1 - Settings for low temperature systems (floor heating only)
ASCARI
boiler is supplied ready for connection to a high temperature system ranging from 0 to 80 °C with
a high temperature safety limitator set at 100 °C (radiators or floor heating and Domestic Hot Water production).
For connection to a low temperature system ranging from 21 to 50 °C with a high temperature limitator set at
60 °C, adjust parapeter #
limitator.
The two safety limitators are located over the electric pannel (see Pic. 1 below).
Safety limitators with manual reset
Ex-work wiring for high temperature system with 100°C high temperature cut-out
(TCMA) to a 50°C or lower value (see § 6.3) and connect the 60 °C safety
Dual connector
Ascari - 12kW -page 4 -
100°C
60°C