DUAL FUEL
FOSSIL FUEL AUX. HEAT
P
O
W
E
R
D
A
M
P
E
R
1
24V
24C
Z1-PO
Z1-PC
ADJUST SETTINGS
RC
RH
COM
W2
O/B
Y1
Y2
G
E
Q
U
IP
M
E
N
T
REMOVE TO SEPARATE
RC & RH TERMINALS
COM
Z
O
N
E
1
S
T
A
T
R
EC
Y
G
O/B
W
Z
O
N
E
2
S
T
A
T
R
C
Y
G
O/B
W
D
A
M
P
E
R
2
Z2-PO
Z2-PC
COM
C
STAT
TYPE
S
A
S
E
N
S
O
R
SA1
SA2
W1
EH
I88
HI TEMP
LO TEMP
SUPPLY
PURGE
DELAY ECO
RESET
HEAT PUMP
B
DUAL FUEL
ELECTRIC
GAS/ELECT
RVS. VLV. O
NORMAL
FAN GAS
LOCKOUT
2
nd
STAGE
ecojay
SmartZone
3
0
0
m
A
2
►
Emergency Heat can ONLY be operated by a heat pump thermostat connected to the ZONE 1
“W” thermostat terminal
. SmartZone allows Gas/Electric or Heat Pump thermostats to be used
on all zones with heat pump equipment.
►
If ZONE 1 thermostat calls for Emer. Heat, the SmartZone system will be LOCKED into
emergency heat. The compressor will NOT energize and only heating calls will be recognized
from any zone other than ZONE 1.
►
Only W1/EH and G will be allowed to energize while SmartZone is LOCKED into emergency
heat. (ie. Compressor & cooling calls will be LOCKED OUT)
►
All cooling calls from ZONES 2 thru 4 will be ignored and any heating call from these zones
will be treated by the SmartZone system as Emer. Heat.
►
To UNLOCK and take the system out of Emer. Heat, remove the Emer. Heat call at the ZONE
1 thermostat
AND
make a call for compressor heat or cooling from this thermostat.
EMERGENCY HEAT
MORE INFORMATION AVAILABLE ONLINE
- ecojay.com
ECONOMY MODE
ECONOMY MODE (ECO) input on SmartZone allows the use of a switch,
occupancy sensor, or dry-contact to keep Zones 2 thru 4 from making
equipment calls. (i.e. Heat or Cool will not energize if only zones 2 thru 4
are calling while EC Input is energized)
Connect
24V and EC INPUT to set
the SmartZone System into ECONOMY MODE. Only ZONE 1 will be able to
make equipment calls. All other zone calls will open and close dampers as
needed to take advantage of the active mode energized by the ZONE 1
thermostat. NO ADDITIONAL SETTINGS REQUIRED.
CLOSED
=
ECONOMY
SmartZone MODES & OPERATION
1 SMARTZONE-4X (14 VA)
+ 4 POC DAMPERS (3 VA X 4)
+ 4 THERMOSTATS (2 VA X 4)
= 37 VA
EXAMPLE
Transformer Calculation:
So, for this example of a basic 4-
Zone system, a 40VA transformer
with a 2 AMP Fuse can be used.
SEE page 5 for more info about
FUSE size.
24VAC TRANSFORMER (NOT INCLUDED) MUST BE
SIZED AND FUSED BASED ON THE SMARTZONE
CONTROLLER, TOTAL DAMPERS AND THERMOSTATS
POWER
14 VA
12VA
3 VA
10 VA
2 VA
ECOJAY Device
SmartZone-4X
SmartZone-2X
Power Open/Close Damper
Spring Return Damper
Typical Thermostat
TRANSFORMER SIZING
24 VAC
TRANSFORMER
In DUAL FUEL Mode, the compressor(s) will not run when AUXILIARY HEAT is energized.
SmartZone controls dual fuel so a “dual fuel kit” and HEAT PUMP THERMOSTATS are NOT
required. GAS/ELECTRIC thermostats may be used with a heat pump system, however, use a
Heat Pump stat for the ZONE 1 Thermostat to control EMERGENCY HEAT (Described above).
Always install the heat pump evaporator downstream of the furnace, this prevents
condensation in the heat exchanger during the cooling mode. SEE SmartZone Equipment
Staging (p. 5) for more details about DUAL FUEL.
2X
ZS2X
2.0
SmartZone
HVAC EQUIPMENT
PRE-INSTALLATION CHECKLIST
►Design all zones to balance the CFM
evenly (each zone should be similar in
size).
►Avoid creating small zones (< 20% of
total capacity).
►Use proper excess (surplus) air-flow
management including these techniques
–
bypass duct/damper, dump zone(s) or
adjust dampers max close settings to allow
leakage.
►Ecojay recommends the use of a bypass
duct/damper that is large enough to
accommodate the total system CFM
capacity minus the CFM capacity of the
smallest zone.
►REFER TO pages 8,9,10,11 for more
information.
►Perform basic equipment check including
compressor, refrigerant charge, blower,
furnace, filter before installing or starting
up SmartZone system.
SMARTZONE PANEL
THERMOSTATS
►Calculate minimum 24V transformer VA capacity (add VA
requirement for SmartZone cont # of therm # &
type of dampers)
– see Transformer Sizing section this page.
►Check primary and secondary voltage for zoning
transformer. Make sure separate transformer and circuit is
use from equipment transformer.
►Select mounting location that provides space and easy path
to run wires.
►Select location that provides easiest path to run wires.
►Do not mount where exposed directly to air stream from
supply air grills.
►Do not mount where exposed to radiant heat from windows
or skylights.
►Do not use power stealing or triac models.
►Gas/electric and/or heat pump stats can be used on heat
pump equipment (heat pump stat is required on zone 1 only if
emergency heat control is needed).
NOTE: Use only gas/electric stats with gas/electric
equipment.
DUCT & DAMPERS
PURGE
TIME DELAY
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. During
DELAY the digital display will count down the number of
seconds left during purge time if a new call is energized.
NOTE:
Although SmartZone will not energize the fan (or
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.
NOTE:
In the case of a Heat-Pump System,
the RC/RH jumper should NOT be removed.
COMM
–
3 Wire Communications to SmartLINK (BLUE) [Use Cat5 Cable ONLY]
10K Type III Thermistor
SA Sensor
– 4" Supply Air Temperature Sensor Stainless Steel Probe
(Provided with each SmartZone)
P
O
W
E
R
O
U
T
P
U
T
S
IN
P
U
T
S
EQUIPMENT
DAMPERS
PROTECTION
SYSTEM
SmartZone-2X
SmartZone-4X
THERMOSTAT
TEMPERATURE
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)
Y2
– 2
nd
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)
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
SmartLINK (COMM)
SPECIFICATIONS
3
DISPLAY OPERATION & FUNCTION
Supply Air Temperature displayed.
“--“
on temp display = SAS disconnected.
System is in PURGE mode for equipment
changeover (Fan [G] and dampers continue to
operate, Countdown timer on digits sec.)
HIGH TEMP LIMIT sensed, SmartZone
Controller de-energizes equipment HEAT output
for a minimum of 3 minutes (Fan [G] and damper
outputs continues to operate)
Setting HIGH TEMP LIMIT
– Press UP or DOWN
Arrow Buttons to adjust the HIGH TEMP LIMIT
(factory default: heat pump
– 120
o
F; electric
heat
– 135
o
F; gas heat
– 135
o
F)
SUPPLY
PURGE
HI TEMP
(ON)
HI TEMP
(FLASHING)
LO TEMP
(ON)
LO TEMP
(FLASHING)
DELAY
ECO
(ON)
LOW TEMP LIMIT sensed, SmartZone Controller
de-energizes equipment COOL output for a
minimum of 3 minutes (Fan [G] and damper
outputs continue to operate)
Setting LOW TEMP LIMIT
– Press the UP or
DOWN Arrow Buttons to adjust the LOW TEMP
LIMIT (factory default 48
o
F)
SmartZone Controller has satisfied all calls and will
DELAY 3 min before initiating any additional calls.
(Countdown timer on digits sec. if call made)
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
close dampers as needed.
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)
energized in the OPEN position
ECO
(FLASHING)
I88
Multi-function digits show supply temperature,
cut-out temperatures (high and low), zone
thermostat types, fresh-air time.
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.
I80
I80
