PBI/Gordon S12 SEQUENCER Operating Instructions Manual

SS1122 SSEEQQUUEENNCCEERR™™

OOPPEERRAATTIINNGG

MMAANNUUAALL

1300 Midway Blvd., Mississauga, Ontario L5T 2G8

[phone] F

el.

T
260 Nor
Tel. [phone] Fax [phone]
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th Elm Street, Westfield, MA 01085

ax [phone]

S12-IOM-1

SS1122 SSeeqquueenncceerr -- 11 -- OOppeerraattiinngg IInnssttrruuccttiioonnss

Figure 1: S12 Sequencer Front Panel

IInnttrroodduuccttiioonn::

The SS1122 SSeeqquueenncceerr™™ is a single zone, modulation or staging boiler controller. It
provides complete control for a typical single zone 3 way valve, domestic hot water OR
heating system, including system circulators and combustion air dampers in one
single, compact package. State of the art electronic hardware and control techniques
allow for accurate, fully automatic system control while saving on operating costs.

1300 Midway Blvd., Mississauga, Ontario L5T 2G8

[phone] F

el.

T
260 Nor
Tel. [phone] Fax [phone]
www.rbiwaterheaters.com

th Elm Street, Westfield, MA 01085

ax [phone]

S12-IOM-1

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.

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SS1122 SSeeqquueenncceerr -- 33 -- OOppeerraattiinngg IInnssttrruuccttiioonnss

PPaanneell DDiissppllaayy:: (cont’d)

1. UUnnaatttteennddeedd ((ccyycclliiccaall ddiissppllaayy)) mmooddee (cont’d):

If any of the Adjust buttons are pressed while any of the above temperatures are
displayed, the Panel Display immediately reverts to show the Target temperature.
As the button is pressed again, the left character of the display shows the letter “c”
(eg. c. I70 = ), indicating that further pressing of the Adjust button will “change”
the current Target temperature. As the button is pressed again, the Target
temperature is changed up or down, depending on the Adjust button pressed.
WWhheenn tthhee cchhaannggee iiss ccoommpplleettee,, tthhee DDiissppllaayy MMooddee bbuuttttoonn mmuusstt bbee pprreesssseedd,, jjuusstt lliikkee
aann ““eenntteerr”” kkeeyy,, ffoorr tthhee nneeww vvaalluuee ttoo bbee aacccceepptteedd aass tthhee nneeww TTaarrggeett tteemmppeerraattuurree..
As soon as the Display Mode button is pushed, the leading “c” disappears
(eg. I60 = ) and the Target temperature takes on the new displayed value. At this
point, the Display Panel reverts to the Manual display mode described below.

Certain overriding conditions will also affect the left-most character of the Target
temperature display as shown below. For further information, refer to the
Parameter Definitions section of this manual.

OOvveerrrriiddiinngg CCoonnddiittiioonn SSaammppllee SSccrreeeenn

Normal Operation: Target temperature not overridden.

I60 =

Target temperature in “change” mode.

c. I63 =

Outdoor Cutoff Temperature: All boilers are off / valve closed.

o. 73 =

High Temperature Limit: Target temperature will not exceed
this value.

H. 200 =

Low Temperature Limit: Target temperature will not go below
this value.

L. I05 =

Table 2: Target temperature display variations.

1300 Midway Blvd., Mississauga, Ontario L5T 2G8

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SS1122 SSeeqquueenncceerr -- 44 -- OOppeerraattiinngg IInnssttrruuccttiioonnss

PPaanneell DDiissppllaayy:: (cont’d)

2. MMaannuuaall ddiissppllaayy mmooddee: By sequentially depressing the DDiissppllaayy MMooddee button, the
following can be displayed in a cyclic fashion:

PPaarraammeetteerr DDiissppllaayyeedd SSaammppllee SSccrreeeenn

PPrreessssiinngg tthhee AAddjjuusstt

bbuuttttoonnss ......

Outdoor temperature

- i5 0

Has no effect.

Indoor temperature

i64 I

Has no effect.

Target temperature

i70 =

Changes the Target

temperature value.

Remaining Hours until
Lead Boiler change

h. 40 r

Has no effect.

One of the control Parameter
screens (see list below)

d. I00 P

Displays previous or next

Parameter.

Table 3: Manual display mode screens.

Pressing the Adjust buttons while the Target temperature is displayed, changes the
Target temperature value as described in the Unattended (cyclical display) mode
above.

3. PPaarraammeetteerr ddiissppllaayy // eeddiitt mmooddee: Pressing the Adjust buttons1 while the Parameter
screen is displayed, places the Panel Display in Parameter display mode. In this
mode, the first (left most) 2 characters of the screen describe the parameter being
displayed. The Adjust buttons are used to view the various different Parameters.
As the Up Adjust button is pressed, the next Parameter (down the table) is
displayed; as the Down Adjust button is pressed, the previous Parameter (up the
table) is displayed. Note that this display is not cyclical, ie. when the first
Parameter is displayed, pressing the Down Adjust button will not have any effect.
A summary of all Parameters follows.

1

{Note: If the S12 is equipped with the KEY option, then the S12 KEY needs to be inserted (refer to Fig.

2) in order for the Adjust buttons to function. Without the KEY, the Display Mode button can still be
used to view the control’s operating temperatures, however, no control setting changes are allowed}.

1300 Midway Blvd., Mississauga, Ontario L5T 2G8

[phone] F

el.

T
260 Nor
Tel. [phone] Fax [phone]
www.rbiwaterheaters.com

th Elm Street, Westfield, MA 01085

ax [phone]

S12-IOM-1