Adjust Menu Setting Descriptions - Lochinvar 399 Installation And Service Manual

Hydronic Heating Boilers and
Domestic Water Heaters
OPERATION
Mode 1
(no outdoor sensor)
STG MODE (**
Models 650 - 990
*BOIL MAX
*SEn (no system sensor)
Set point TARGET 1
DIFF 1
Set point TARGET 2
DIFF 2
Set point TARGET 3
DIFF 3
Set point TARGET 4
(** Models 1260 - 2070 only)
DIFF 4
*STG DLY
*ΔT MIN
*ΔT MAX
units
Note: * indicates the setting is only available in the advanced access level
** units listed in KBtu
TABLE-R
View Menu Information
Menu Description
STG MODE Stage Mode
OUTDR Outdoor air temperature
BOIL TARGET Boiler target temp during outdoor
reset operation
BOIL SUP Actual system sensor temp
BOIL OUT Actual boiler supply water temp
BOIL IN Actual boiler return water temp
BOIL ΔT Temp difference between supply
and return
TANK Actual tank temp
BOIL ON Accumulated runtime of boiler
(up to 999 hours, then resets to 0)

Adjust Menu Setting Descriptions

BOIL MAX
Maximum boiler target supply temperature [either 200°F
(93°C) or 250°F (121°C)].
SEn
Select whether staging is based on the boiler inlet or outlet
sensor.
Continued
TABLE-Q
Adjust Menu Settings for Operating Modes
Mode 1
(outdoor sensor)
) STG MODE (**
Models 650 - 990
OUTDR START
OUTDR DSGN
BOIL START
BOIL DSGN
WWSD
*BOIL MAX
*BOIL MIN
*BOIL MASS
BOIL DIFF
Set point TARGET
*ΔT MIN
*ΔT MAX
units
Mode 2
) STG MODE (**
Models 650 - 990
*BOIL MAX
Set point TARGET 1
DIFF 1
Set point TARGET 2
DIFF 2
Set point TARGET 3
DIFF 3
Set point TARGET 4
(** Models 1260 - 2070 only)
DIFF 4
*STG DLY
*ΔT MIN
*ΔT MAX
units
Set Point TARGET (1, 2, 3, or 4)
Temperature set point target for stages 1, 2, 3, or 4. Typically,
users set the four different stages a few degrees apart. This
allows segments of the heater to come on as the temperature
drops.
DIFF (1, 2, 3, or 4)
Temperature differential for stages 1, 2, 3, or 4.
STG DLY
Stage delays can be set as follows:
Btu/hr Input
399,999 - 500,000
650,000 - 750,000
990,000
1,260,000 - 2,070,000
ΔT MIN
Set temperature at which purging stops.
ΔT MAX
Set temperature at which ΔT Max Error Code is generated.
UNITS
Set temperature reading at either °F or °C.
OUTDR START
Outdoor starting temperature.
44
Mode 3
)STG MODE(**
Models 650 - 990
*BOIL MAX
*ΔT MIN
*ΔT MAX
units
Stages
1 and 2
1,2 and 3
1,2 and 3 or 1,3 and 2
1,2 and 3,4 or 1,3 and 2,4
)