Lochinvar 399 Adjust Menu Setting Descriptions, TABLE-Q Adjust Menu Settings for Operating Modes

Hydronic Heating Boilers and

Domestic Water Heaters

OPERATION Continued

TABLE-Q

Adjust Menu Settings for Operating Modes

Mode 1	Mode 1	Mode 2	Mode 3
(no outdoor sensor)	(outdoor sensor)
STG MODE (**Models 650 - 990)	STG MODE (**Models 650 - 990) STG MODE (**Models 650 - 990)STG MODE(**Models 650 - 990)
*BOIL MAX	OUTDR START	*BOIL MAX	*BOIL MAX
*SEn (no system sensor)	OUTDR DSGN	Set point TARGET 1	*ΔT MIN
Set point TARGET 1	BOIL START	DIFF 1	*ΔT MAX
DIFF 1	BOIL DSGN	Set point TARGET 2	units
Set point TARGET 2	WWSD	DIFF 2
DIFF 2	*BOIL MAX	Set point TARGET 3
Set point TARGET 3	*BOIL MIN	DIFF 3
DIFF 3	*BOIL MASS	Set point TARGET 4 (** Models 1260 - 2070 only)
Set point TARGET 4 (** Models 1260 - 2070 only) BOIL DIFF		DIFF 4
DIFF 4	Set point TARGET	*STG DLY
*STG DLY	*ΔT MIN	*ΔT MIN
*ΔT MIN	*ΔT MAX	*ΔT MAX
*ΔT MAX	units	units

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.

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	Stages
399,999 - 500,000	1 and 2
650,000 - 750,000	1,2 and 3
990,000	1,2 and 3 or 1,3 and 2
1,260,000 - 2,070,000	1,2 and 3,4 or 1,3 and 2,4

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.

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