Purge; Time Delay; Rc/Rh Jumper; Specifications - Ecojay SmartZone 2X Specifications - Installation And Operation Instructions

A 3 minute PURGE of the supply air plenum is initiated during
Opposing-Call Changeover. (Switching from Heat to Cool or
Cool to Heat) During the PURGE, the fan will remain
energized to purge existing supply air temperature and to
allow equalization of hvac system pressures before energizing
the opposing mode call. During the PURGE Mode, zone(s)
calling for the opposite mode will have damper(s) closed. All
other dampers (non-calling zone(s) and zone(s) calling for
mode last energized) will remain open during PURGE Mode.
During PURGE the digital display will count down the number
of seconds left during purge time.
Time DELAY is designed for equipment protection. After calls
from all zones have been satisfied and the equipment is de-
energized, a 3-minute Time DELAY will be completed before
new thermostat calls will be processed. During the DELAY all
dampers open and the equipment will NOT run.
DELAY the digital display will count down the number of
seconds left during purge time if a new call is energized.
Although SmartZone will not energize the fan (or
NOTE:
equipment) during DELAY the equipment being used may
have a built in control that causes the fan to continue
running.

RC/RH JUMPER

The RC/RH Jumper is Factory Installed on the SmartZone
Controller. If the equipment requires separate transformers
for heat and cool, REMOVE the RC/RH jumper [JP2] below
the EQUIPMENT connector on the right side.
In the case of a Heat-Pump System,
NOTE:
the RC/RH jumper should NOT be removed.

SPECIFICATIONS

SmartZone-2X
SmartZone-4X
SYSTEM
PROTECTION
EQUIPMENT
DAMPERS
SmartLINK (COMM)
THERMOSTAT
TEMPERATURE

PURGE

TIME DELAY

During
14VA MAX (375 mA @ 24VAC) [2X = 12VA, 8X = 28VA]
If multiple transformers are used in 8X system, the primary and secondary polarities must
be the same for both transformers and on both ZS4X boards.
14VA + Stats (2VA ea.) + Dampers (3- 10 VA ea.)= Total Transformer Size
Integrated 5X20mm 300mA Fuse- One replacement also included.
(Field supplied transformer should also be fused)
10 AMP @ 24VAC Contact Rating
RH – 24VAC HOT from Heating Transformer on Equipment (RED)
RC – 24VAC HOT from Cooling Transformer on Equipment (RED)
C – 24VAC COMMON from Transformer on Equipment (none)
Y1 – 1 st
Stage Compressor (YELLOW)
nd
Y2 – 2
Stage Compressor (YELLOW)
G – Fan (GREEN)
W1/EH – 1 st
Stage Heat OR Emergency Heat (RED)
W2/OB – 2 nd
Stage Heat OR Reversing Valve (ORANGE)
10 AMP @ 24VAC Contact Rating (40VA)
Power-Close / Spring-Open Dampers (10VA)
Power-Open / Spring-Close Dampers (10VA)
Power-Open / Power-Close Dampers (3VA)
COMM – 3 Wire Communications to SmartLINK (BLUE) [Use Cat5 Cable ONLY]
LABEL – DESCRIPTION (LED COLOR)
R – 24VAC HOT (RED)
C – Common (NONE)
Y – Compressor (YELLOW)
G – Fan (GREEN)
W – Heat OR Emergency Heat (RED)
O/B – Reversing Valve (ORANGE)
EC – Economy Input (GREEN) ß Zone ONE only
10K Type III Thermistor
SA Sensor – 4" Supply Air Temperature Sensor Stainless Steel Probe
(Provided with each SmartZone)
DISPLAY OPERATION & FUNCTION
I88
Multi-function digits show supply temperature,
cut-out temperatures (high and low), zone
thermostat types, fresh-air time.
SUPPLY
Supply Air Temperature displayed. "--"
on temp display = SAS disconnected.
PURGE System is in PURGE mode for equipment
changeover (Fan [G] and dampers continue to
operate, Countdown timer on digits
HI TEMP
HIGH TEMP LIMIT sensed, SmartZone
Controller de-energizes equipment HEAT output
for a minimum of 3 minutes (Fan [G] and damper
(ON)
outputs continues to operate)
HI TEMP
Setting HIGH TEMP LIMIT – Press UP or DOWN
Arrow Buttons to adjust the HIGH TEMP LIMIT
(factory default: heat pump – 120
(FLASHING)
heat – 135
LO TEMP
LOW TEMP LIMIT sensed, SmartZone Controller
de-energizes equipment COOL output for a
minimum of 3 minutes (Fan [G] and damper
(ON)
outputs continue to operate)
LO TEMP
Setting LOW TEMP LIMIT – Press the UP or
DOWN Arrow Buttons to adjust the LOW TEMP
(FLASHING)
LIMIT (factory default 48
DELAY
SmartZone Controller has satisfied all calls and will
DELAY 3 min before initiating any additional calls.
(Countdown timer on digits
ECO
EC input on Zone 1 is energized and system is in
ECONOMY MODE. Only Zone 1 can initiate
equipment calls, other zones will only open and
(ON)
close dampers as needed.
ECO
If ZONE 4 has been configured for FRESH AIR
and FRESH AIR is being currently satisfied. FAN
should be running and ZONE 4 (FA Damper)
(FLASHING)
energized in the OPEN position
I80
sec.)
o
F; electric
o o
F; gas heat – 135
F)
o
F)
I80
sec. if call made)
3