SS1122 SSeeqquueenncceerr -- 22 -- OOppeerraattiinngg IInnssttrruuccttiioonnss
FFuunnccttiioonn::
For heating zone applications, the SS1122 SSeeqquueenncceerr™™ acts as an indoor / outdoor reset
controller. It senses the OOuuttddoooorr temperature and calculates the TTaarrggeett indoor
temperature from a reset schedule. The SS1122™™ then modulates the valve or turns boiler
stages on and off, as necessary, to ensure that the IInnddoooorr temperature reaches the
TTaarrggeett temperature. The IInnddoooorr temperature sensor is installed in the return water
line for staging applications, or the supply water line for modulating valve applications.
The OOuuttddoooorr temperature sensor is located on a north wall, away from any influence
of the sun or any other heat source.
For domestic hot water applications, the SS1122™™ acts as a constant temperature
controller. The TTaarrggeett indoor temperature remains constant, set to the desired
domestic hot water tank temperature. Boiler stages are then turned on and off, as
necessary, to ensure that the IInnddoooorr temperature reaches the TTaarrggeett temperature. The
IInnddoooorr temperature sensor is installed in the domestic hot water tank and the OOuuttddoooorr
temperature sensor is not used.
PPaanneell DDiissppllaayy::
The Panel Display screen of the SS1122™™ consists of 5 characters. The rightmost
character is the DDiissppllaayy MMooddee. It is used to describe the current value displayed. All
temperatures and PPaarraammeetteerrss (control settings) can be displayed using the following
operating modes:
1. UUnnaatttteennddeedd ((ccyycclliiccaall ddiissppllaayy)) mmooddee: When left unattended for a period of 1
minute, the screen reverts to a cyclical display mode showing the following:
PPaarraammeetteerr DDiissppllaayyeedd SSaammppllee SSccrreeeenn
PPrreessssiinngg tthhee AAddjjuusstt
bbuuttttoonnss ......
Outdoor temperature
- i5 0
Changes the Target
temperature value.
Indoor temperature
i64 I
Changes the Target
temperature value.
Target temperature
i70 =
Changes the Target
temperature value.
Table 1: Unattended display mode screens.
el.
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