5
Connections
74.5 (Gas)
45.6 (Cold)
66.6 (Hot)
162 (Elec.)
5
110
27
89
Gas connection
Cable access
Cold water inlet
Hot water outlet
Power supply cable
89 (Gas)
60.1 (Cold)
81.1 (Hot)
162 (Elec.)
5
27
110
89
Hot water outlet
Cold water inlet
Cable access
Power supply cable
Gas connection
Service connection points
An approved full flow isolation valve and disconnection union MUST BE fitted to the cold water
inlet. A non-return valve is not required unless stipulated by local regulations.
Isolation valves MUST NOT be fitted directly to the appliance.
It may be necessary to fit a temperature limiting device for delivery to areas used primarily for the
purposes of personal hygiene, refer page on ‘Water delivery temperature’ for more information.
Purge gas and cold water supply lines to remove air and swarf before final connection. Swarf in the
gas or water supplies may cause damage, a common problem, which is not covered by warranty.
HD49kWe external
HD49kWi and A28i internal
Summary of Contents for A28i
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