Worcester DT20 User Manual

SERVICING
& SPARES
14
MAINTENANCE & SPARES
FITTING & OPERATING INSTRUCTIONS FOR WORCESTER BOSCH
TWIN CHANNEL DT20 PROGRAMMER
8-716-106-647 issue b (11.04) UK
DIGITAL TWIN CHANNEL PROGRAMMER
FOR GREENSTAR i and GREENSTAR Si MODELS
INSTRUCTION MANUAL
FITTING & OPERATING INSTRUCTIONS
DT20 PROGRAMMER
MAINTENANCE & SPARES
06490040001 Rev B
set?
OK
off
timed
once
on
off
timed
once
on
heating hot water
select select
advance advance
MON TUE WED THU FRI SAT SUN
CLOCK? PROG? DATE? HDAY?
AM OFF
CHW ON
Maintenance:
The programmer requires no
maintenance
The outer casing can be wiped
clean using a dry cloth, do not use
polish or detergents
Servicing:
This unit cannot be serviced.
Should the existing unit fail to
function correctly, check that the
times and program settings are
correct.
Replacement Parts:
DT20 programmer replacement part
number: 8-716-106-665-0
set?
OK
off
timed
once
on
off
timed
once
on
heating hot water
select select
advance advance
MON TUE WED THU FRI SAT SUN
CLOCK? PROG? DATE? HDAY?
AM OFF
CHW ON
set?
OK
off
timed
once
on
off
timed
once
on
heating hot water
select select
advance advance
MON TUE WED THU FRI SAT SUN
CLOCK? PROG? DATE? HDAY?
AM OFF
CHW ON

Worcester DT20 Specifications

General

Socket	LGA 1151
Chipset	Intel H110
Memory Slots	2
Max Memory	32 GB
Memory Type	DDR4
PCIe Slots	1 x PCIe 3.0 x16, 2 x PCIe 2.0 x1
Form Factor	Micro-ATX
SATA Ports	4
Audio	Realtek ALC887
LAN	Realtek RTL8111H
Video Outputs	VGA, HDMI

Summary

Maintenance and Spares

Installation and Commissioning

Fitting the DT20 Programmer

Detailed instructions and safety warnings for physically installing the DT20 programmer onto the boiler.

User Instructions: Operating Controls

Central Heating Control

How to select heating modes (off, timed, once, on) and use the advance button for heating.

Hot Water Control

User Instructions: Setting Programs

Setting Individual Weekday Programs

Setting Weekend Programs (CH/HW)

Setting Weekday Programs (CH/HW)

User Instructions: Setting Time and Date

Setting the Clock

Instructions on how to set the 12hr or 24hr clock and toggle between display modes.

Setting the Date

Steps to set the current date, including Daylight Saving adjustments (ON/OFF).

User Instructions: Setting Holidays

Holiday Function

How to set a holiday period where heating is off. The program returns to normal after the set days.

Technical Data