High And Low Limit Adjust; Auto Changeover; Smartzone Equipment Staging - Ecojay SmartZone 2X Specifications - Installation And Operation Instructions

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HIGH AND LOW LIMIT ADJUST

See EQUIPMENT STAGING below for more details. For protection, SmartZone will not allow the EQUIPMENT to run above or below these settable limits.
ADJUST SETTINGS
STAT
TYPE

AUTO CHANGEOVER

With the SmartZone system, it is possible to have a zone(s) calling for cool and another zone(s) calling for heat. These are called opposing calls. When the
equipment has an active call running and SmartZone receives an 'opposing call' from another zone(s), the existing active mode running on the equipment will be
limited to a maximum run time of 15 minutes from the time the first opposing mode call was received. If the active mode does not satisfy the calling zone(s) in this
15 minute interval SmartZone will initiate a CHANGEOVER process de-energizing the active mode and initiating a 3 minute PURGE (see page 3 for more about
PURGE). During PURGE, all dampers open during the previously active mode remain open and the fan remains energized to neutralize the supply air temperature
before energizing the opposing call mode on the equipment CHANGEOVER process.

SmartZone EQUIPMENT STAGING

The SmartZone controls equipment
staging automatically based on
time and supply air temperature.
(This temperature is read by the
SUPPLY AIR TEMP SENSOR – SEE
previous page for proper
Without this
installation) NOTE:
sensor installed, the SmartZone will
NOT run 2 stage or operate any
nd
dampers.
The charts in this section illustrate
this correlation between TIME,
TEMPERATURE, & STAGING
( FACTORY DEFAULTS SHOWN IN
CHARTS )
Time and temperature settings will
vary according to the type of
equipment SmartZone is configured
for and the HI/LO temp limit
settings used. Staging will occur
ONLY when the minimum run-time
and temperature range conditions
are met. The factory default
settings for temperature cut-in and
cut-out are adjustable. (SEE HIGH
and LOW LIMIT ADJUST section
above)
1 STAGE
ST
►Y1 and G equipment
terminals energize when any
COM
thermostat calls for heat.
Y1
Y2
G
►Y1 de-energizes at a supply
W1
EH
temp warmer than (above) HI
W2
temp cut-out and will re-
O/B
RC energize after 3 min if supply
temp has fallen lower (cooler)
RH
than HI temp (Default: 120⁰F)
Adjustable Range:
120⁰
HI TEMP CUT-OUT
nd
115⁰
2 STAGE CUT-OUT
nd
105⁰
2 STAGE CUT-IN
100⁰
AUX. HEAT CUT-OUT
90⁰
AUX. HEAT CUT-IN
Adjustable Range:
(90 to 94°F)
TIME
(Minutes)
SET HIGH TEMP LIMIT (CUT-OUT)
PRESS & release the ▲ "UP" arrow button when the display is showing SUPPLY temperature. The "HI
TEMP" indicator will flash and the digits will show the currently set temperature. This high limit cut-out
can be adjusted up or down using the ▲▼buttons. See EQUIPMENT STAGING below for more details.
AUX. HEAT CUT-IN
PRESS & HOLD the ▲ "UP" arrow button for 5 seconds when the display is showing SUPPLY
temperature. When released the "HI LIMIT" and "DELAY" indicators will flash and the digits will
show the currently set temperature (DEFAULT = 90, adjustable from 90 to 94 using ▲▼buttons).
SET LOW TEMP LIMIT (CUT-OUT)
PRESS & release the ▼ "DOWN" arrow button when the display is showing SUPPLY temperature. The "LO
TEMP" indicator will flash and the digits will show the currently set temperature. This low limit cut-out can
be adjusted up or down using the ▲▼buttons. See EQUIPMENT STAGING below for more details.
IMPORTANT NOTE:
cut-in and cut-out temperatures settings. Adjusting these can cause staging to occur sooner or
later as needed. See EQUIPMENT STAGING below for more details about each scenario.
GAS/ELECTRIC
1 STAGE
ST
COM
Y1
Y2
G
W1
EH
W2
O/B
RC
RH
135⁰
HI TEMP CUT-OUT
Adjustable Range:
(125 to 150°F)
nd
125⁰
2 STAGE CUT-OUT
nd
110⁰
2 STAGE CUT-IN
TIME
(Minutes)
HEAT PUMP (NORMAL) –
2
COM
NOTE: B will also energize
if DIP SWITCH #2 set to B
O/B
(110 to 125°F)
1ST STAGE
(Starts when first call
for heat is made)
0 2
Changing either the LOW or HIGH temp limit will also affect the staging
HEATING
►W1 & G energize when any
thermostat calls for heat.
*
G will energize immediately if DIP
SWITCH #5 is set to "ELECTRIC".
If set to the default of "GAS", G will
energize after 90 seconds.
►W1 de-energizes at a supply air
temp warmer than HI temp cut-out
and will re-energize after 3 min if
supply temp has fallen lower (cooler)
than HI temp (Default: 135°F)
1ST STAGE
(Starts when first call
for heat is made)
0
4
STAGE
►Y2 energizes at a supply
nd
temp 15⁰ less than HI temp
cut-out (or cooler) after a 4
minute run time of Y1 only.
Y1
(Default: 120⁰ - 15⁰ = 105⁰F
Y2
or cooler Y2 energizes)
G
W1
►Y2 de-energizes at a supply
EH
W2
temp of 5⁰ less than HI temp
cut-out (or warmer) after 3 min
RC
of minimum run time.
RH
(Default: 120⁰ - 5⁰ = 115⁰F or
above Y2 de-energizes)
-15⁰
2ND STAGE
(3-Minute Minimum
Run Time)
4
2 STAGE
nd
►W2 energizes at a supply air temp
cooler than 25⁰ less than HI temp cut-
COM
out after 8 minutes run time of W1 only.
Y1
(Default: 135 - 25 = 110 or cooler)
Y2
►W2 de-energizes at supply air
G
W1
temp warmer than 10⁰ less than HI
EH
temp cut-out after 3 min of minimum
W2
O/B
run time.
RC
(Default: 135 - 10 = 125 or warmer)
RH
-25⁰
2ND STAGE
(3-Minute
Minimum Run
8
Time)
HEATING [ELECTRIC AUX.]
AUX.
HEAT
COM
Y1
Y2
G
W1
EH
W2
O/B
RC
RH
-5⁰
6
SE
HI TEMP
LO TEMP
SUPPLY
DELAY ECO PURGE
TO SAVE SETTINGS,
wait for display to
show "St" (STORE)
-10⁰
12
►W1 [Auxiliary Heat]
energizes while Y1&Y2
de-energize at a supply
temp cooler than 90⁰F
after 6 minutes run time
of Y1 & Y2 only.
►W1 [Auxiliary Heat]
de-energizes at a
supply temp of 100⁰F
or warmer (NON-
ADJUSTABLE)
AUX HEAT
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