TECHNICAL CHARACTERISTCS
15
6
7
5
4
3
2
1
8
110V 60Hz
2.6 DIGITECH
®
printed circuit board
– SM 20021
Technical characteristics
Adjustments possible by service personnel only
Standard (86-176°F) / reduced (77-104°F) central h e a t i n g temperature
Water hammer prevention function
Central Heating timer - (adjustable from 0 to 7,5 minutes)
Central Heating pump overrun timer
Domestic Hot W ater pump overrun timer
Minimum Gas pressure setting
Maximum Heating Load
D.H.W . temperature setting 95-160°F
User settings
On/Off
Heating Temperature setting (86-176°F)
– (77-104°F)
D.H.W . temperature setting (95-140°F)
– (95-160°F)
D.H.W. only mode / Heat only mode / D.H.W. + Heat mode selection
Operation/Functions display
Lock-Out
Water deficiency indicator
Temperature display
-+
When the water heater is switched off at the switch on the control panel, the word OFF appears on the
display. The D.H.W and central heating frost protection system, nevertheless, remain enabled. If the
water heater was previously on, it is switched off and the post-ventilation, pump overrun, circulation
pump and three-way valve inactivity protection functions are enabled.
2.7 Control panel
LEGEND
1.
ON/OFF SWITCH
2.
HEATING TEMPERATURE CONTROL KNOB
3.
D.H.W TEMPERATURE CONTROL KNOB.
4.
D.H.W
TEMPERATURE
BUTTON.
KEEP
PRESSED FOR 5 SECONDS TO DISPLAY
OUTSIDE
TEMPERATURE
(ONLY
WITH
OPTIONAL OUTDOOR SENSOR)
5.
SERVICE BUTTON.
6.
D.H.W,
HEAT
OR
D.H.W./HEAT
MODE
SELECTION BUTTON.
7.
TERMINAL BOARD FOR EXTERNAL WIRING.
8.
TEMPERATURE,
ERROR
CODE
AND
OPERATING STATUS DISPLAY
Summary of Contents for PCI 18
Page 8: ...GENERAL INFORMATION 5 ...
Page 9: ...GENERALInformation 6 ING ...
Page 10: ...GENERALInformation 7 ...
Page 11: ...GENERALInformation 8 ...
Page 25: ...INSTALLATION INSTRUCTIONS 22 3 6 Piping Diagram ...
Page 33: ...INSTALLATION INSTRUCTIONS 29 Venting Pictures Illustrations ...
Page 63: ...INSTALLATION INSTRUCTIONS 59 6 8 Wiring diagrams ...