Danfoss 103E5 Uživatelský manuál stáhnout pdf (Strana 4)

INSTALLATION

Installing most modern time controls involves fixing a wall plate, making simple connections from this to a wiring

centre and then attaching the front unit. Considerable wiring interchangeability exists between different makes,

often allowing use of the existing wall plate when upgrading. Even when this is not possible, removing the existing

plate and fitting the new one is not a major job. Danfoss Randall can supply a free interchangeability guide

covering many popular makes of time controls. Wall plates in common use are: -

Danfoss Randall MK18 Wall Plate - ‘Industry Standard’ Wall Plate (Fig. 5)

Fig. 5. Mk18 Wall Plate and FP715 Full Programmer

Most time controls manufacturers produce models that utilise wall plates of this general design. These will fit

directly onto the wall plate of an early ‘industry standard’ electro-mechanical programmer of which several million

units were sold in the UK.

By providing this ready interchangeability, other manufacturers were able to offer easy upgrades when the original

units became unserviceable. A word of caution – these alternative wall plates are not exact copies of the original

and one manufacturer’s modern time control may not necessarily fit onto another’s wall plate.

The original wall plate for the electro-mechanical programme incorporated an Earth terminal. Modern electronic

programmers, like the Danfoss Randall Mk18, are double insulated and do not require this terminal.

Danfoss Randall GP Wall Plate (Fig. 6)

Fig. 6. Wall Plate for GP electro-mechanical and electronic time controls.

This is the wall plate for the original 24-hour large dial, electro-mechanical Randall 103 time switches and 102

mini-programmers, which are still available. Countless numbers of these controls can still be seen on installations

all over the country, all of which can be upgraded easily and directly by fitting electronic versions onto the existing

wall plates. Electronic GP’s are available as either 24hr-weekday/weekend or 24hr-7day models.

Danfoss Randall SET Wall Plate – British Gas Standard Wall Plate (Fig. 7)

Fig. 7. Wall Plate for SET electro-mechanical and electronic time controls.

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Danfoss 103E5 Uživatelský manuál Strana 4