Honeywell ST799 PRODUCT DATA

FEATURES

∙7-day programme

∙Weekday/weekend programme option (installer link)

∙Independent heating and hot water channels

∙One or Two ON/OFF periods per day

∙Built-in programme

∙Temporary programme override/advance

∙7-day battery back-up

∙Compact size

∙AM/PM or 24 hour clock format (factory option)

ST799

ELECTRONIC DUAL

ZONE TIMER

PRODUCT DATA

The ST799 electronic dual zone timer is used to control gravity, primary or fully pumped central heating systems requiring a single 7-day programme with two ON/OFF periods per day.

ST799 incorporates a simple and intuitive programming concept which established the 24-hour version (ST699) as the leading electronic dual zone timer on the market.

ST799 is designed for European CEN approval.

∙Wallplate compatibility with 24-hour version (ST699)

∙10 minute programme resolution

∙3 A resistive/inductive (@ 0.6 pf) 230 V~ SPDT relay rating

∙Simple/intuitive programming concept

∙Copy day feature

∙Surface or wallbox mounting options

∙Pack contains everything for immediate installation

EN0R 8440 R0

ST799 ELECTRONIC DUAL ZONE TIMER

SPECIFICATIONS

Product type : Electronic dual zone timer Power supply : 230 V~ (±10%), 50 HZ

Power reserve : Rechargeable battery with 7 days backup following a 24 hour charging period

Switch rating : 2 x SPDT potential free

3 A resistive @ 230 V~ (± 10%), 50 Hz 3 A inductive @ 0.6 pf

Programme	:	7-day with two ON/OFF periods daily
		5/2-day (weekday/weekend) option by
		installer link
Programme	:	10 minutes
resolution

Programme day	:	03.00 AM to 02.50 AM (on the next day)
Override	:	Advance next programme time
		(change)

Wiring	: Surface or single wallbox (UA1 size)
Wiring access : Rear or bottom edge (surface wiring
	access)
Wire gauge	: 0.75 to 2.5 mm2 two max. per terminal
Dimensions	: 100 x 100 x 38 mm (w x h x d)
Protection class	: IP20 (IEC 529)

Environmental : Operating temperature range 0 to 45oC

	Shipping and storage temperature
	range -20 to 55oC
	Humidity range 0 to 90% rh, non-
	condensing
Approvals	: Designed to meet European CEN
	approval EN60730
Life	: 7 years minimum

DIMENSIONS

100

INSTALLATION

Mounting

Remove the subbase from the timer by depressing the securing clip A and pulling the two halves apart. See fig. 1

The ST799 can either be mounted onto the wall surface or a flush mounted UA1 (with 60.3 mm pitch mounting holes) using the screws supplied.

Weekday/Weekend Programme

To convert timer from 7-day programme to 5+2 day (Weekday/Weekend) programme, cut and remove link LK1 on the main circuit board.

IMPORTANT

1.The installer must be a trained service engineer

2.Disconnect the power supply before beginning installation

ORDERING SPECIFICATION

ST799A1003

Fig. 1

EN0R 8440 R0

2