Theory Of Operation - Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual

1.5 Theory of Operation

User Interface Display
S t a n d b y :
User Menu
M E N U
B o i l e r
S e t t i n g s
C a s c a d e
B O I L E R
C u r r e n t
S e t p o i n t
B O I L E R
S u p p l y
R e t u r n
D H W
B O I L E R
S y s t e m
F l u e
O u t d o o r
B O I L E R
B o i l e r
C H / S y s t e m
D H W P u m p
APPENDIX A - CONTROL MODULE
N o D e m a n
7 5 ° F
S t a t u s
S t a t u s
S T A T U S
S u p p l y
1 6 0 ° F
S T A T U S
1 4 0 ° F
1 2 0 ° F
S t a t O p e n ▼
S T A T U S
N . C .
1 3 2 ° F
3 6 ° F ▼
S T A T U S
P u m p O f f
P u m p O f f
O f f
Boiler operates in standby mode until demand for Central Heat
(CH) or Domestic Hot Water (DHW) is detected.
d
User Menu structure includes:
• 'Boiler Status' submenu– User can monitor general boiler
status parameters such as sensor temperatures and
pump operation.
• 'Settings' submenu – User can view CH , adjust DHW
supply water set points and also select control language.
• 'Cascade Status' submenu – Boiler set to function as
part of multiple boiler installation; submenu used to view
runtime parameters. See Multiple Boiler Manual.
Supply Temperature set point displayed.
If boiler running in CH mode, CH set point displayed.
Note:
• While running in Outdoor Reset mode, this value may
change in proportion with the outdoor temperature.
▼
• If the boiler is running in DHW mode, the DHW supply set
point is displayed.
▲
Several boiler runtime parameters can be viewed while in 'Boiler
Status' submenu.
▲
Operational status of pump system also shown.
Information available during all states of boiler operation.
Sensor values with troubleshooting tree used to diagnose
typical problems.
▲
60
Explanation