Model NCM 300 Zone Control System - EWCAux. Ht. 4:31 pm 72 o Fr FAN AutoOn SYSTEM Cool Off Heat Em....
Transcript of Model NCM 300 Zone Control System - EWCAux. Ht. 4:31 pm 72 o Fr FAN AutoOn SYSTEM Cool Off Heat Em....
The NCM 300 panel provides intelligent control of Heat
Pump or Conventional forced air zoning systems at a
maximum of three zones using motorized dampers and
practically any off-the-shelf heat/cool thermostat. With
features like automatic changeover, one zone setback
feature, field selectable timers and supply air sensing
capability, the NCM 300 provides a high level of
performance in a non-expandable zone control panel.
Perfect for new construction and retro-fit applications.
Will control heat pumps with O or B
type reversing valves and electric
auxiliary heat. Will also control 1 or 2
stage gas or oil fired furnaces, with
single stage electric air conditioning.
The NCM300 panel features automatic
changeover from any thermostat
allowing for individual zone comfort
from the HVAC system.
The STATUS LED blinks slowly during
normal operation to indicate the micro
processor is operating properly.
A total of 9 LED’s indicate the system
status and mode of operation.
LEDs labeled Zone 1 thru Zone 3
indicate which dampers are energized
to open.
Operates on 24VAC power supplied
from a separate transformer. A single
40VA transformer can power all three
zones, with a total of four dampers.
8va draw per damper.
The NCM300 has a thermal circuit
breaker in place of a fuse, and
protects the panel from shorts in the
thermostat and damper field wiring. It
does not protect against shorts in the
HVAC system wiring.
CAUTION: When the circuit breaker is
tripped it will get quite hot. To reset the
breaker, locate and repair the short,
remove the 24vac power for 30
seconds and then restore it.
The panel has a built-in circuit that
monitors the computers performance
and resets the panel if an error occurs
in operation or due to power failures.
Any zone can activate the indoor fan
and only the dampers in zones calling
for continuous fan operation will open.
Continuous fan operation will only
occur when there are no heating or
cooling calls.
Zone Capacity
CompatibleHVAC Systems
CompatibleThermostats
AutomaticHeat/CoolChangeover
Status LED
Figure 1. NCM300 panel
System LEDs
Damper LEDs
Operating Power
ThermalBreaker
Watch DogCircuit
Indoor FanControl
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
Model NCM 300 Zone Control SystemTB-206
P/N 090375A0206 REV. J Copyright C EWC Controls 2000 All Rights Reserved
LEAVE THIS BULLETIN ON THE JOB SITE FOR FUTURE REFERENCE
NCM-300
2
1
SUPPLYAIR
SENSOR
C
W
Y
R
G
ZONE 3T'STAT
C
W
Y
R
G
ZONE 2T'STAT
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
M6
M4
M2
M1
ZONE 3MOTOR
M6
M4
M2
M1
ZONE 2MOTOR
M6
M4
M2
M1
ZONE 1MOTOR
R
C
24 VACT'FORMER
O
Y
G
W2/E
W1/B
RH
RC
SYSTEM
CONTROL SYSTEM
5
10
1520
25
30
352nd STAGE
TIMER
34
37
4043
46
49
52LOW TEMP
LIMIT
120
110
130140
150
160
170HIGH TEMP
LIMIT
CONTROLS INC.Englishtown, NJ
R
R7
C8
F1
RC/RHLINK
R14
R26
K1
K2
K3
D3
D4
D5
R35
R44
R51
R56
K4
K5
K6
K7
D7
D8
D9
D10
D6
+
C1 D1 R4 R8
CPURESET
TIMERRESET
C4
D2
U1
U2
U3
U4
U5
C6 C7
R6
R5
R10
R9
R11
R13
R12
R18
R19
R23
R24
R25
R29
R30
R34
R32
R33
R40
R39
R42
R43
R41
R46
R47
R49
R48
R50
R54
R55
R59
R58
R60
R61
R63
R62
R65
C5Y1
R38
R37
R52
R53
R57
R45
C2
C3
R15
R17
R16
R21
R20
R22
R28
R27
R31
Z1
R36
OFF < > ON
S1
FAN DELAY OFF < > ONPURGE 60s < > 90sAUTO CHANGEOVER 2m< >5mSYSTEM HEAT PUMP< >GASFAN HYDRO < > GASOP SYS 0m< >20mSAS OFF < > ON NOT USED
STATUSLED1
LED2
LED4
LED3
LED6
LED5
LED7
LED8
LED9
SUPPLY AIR LIMIT
ZONE 3 OPEN
ZONE 2 OPEN
ZONE 1 OPEN
W2 / EM
W1 / REV VALVE
COMPRESSOR
FAN
Regardless of the application, use standard 24vac, 4/5 wire heat/cool mechanical or electronic thermostats in all zones! Mercury, Battery, and Power robbing types that draw less than 20 ma of current can also be used. Compatible with a select type of heat pump thermostat in zone 1 only.
Controls two or three air zones with
most 24vac Power Open/Closed or
Spring Assisted motorized dampers.
NC
M3
00
Ve
r 1.2
Co
pyrig
ht E
WC
/AC
I 200
2 A
LL rig
hts
rese
rve
d
Momentarily pressing the TIMER
RESET button clears the built-in
timers controlling the minimum run
timer, short cycle timer, W2 timer, and
the changeover timer. This enables
you to test the installation faster.
Caution should be observed when
using this button.
Momentarily pressing the CPU RESET
button resets the computer.
TIMERRESET
Timer Reset BUTTON
SYSTEMRESET
CPU Reset BUTTON
AUTO 2m < > 5mCHANGEOVER
SYSTEM TYPE HEATPUMP < > GAS
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
110
120
130140
150
160
170
HEATING LIMIT
34
37
4043
46
49
52COOLING LIMIT
The panel has built-in timers that
insure reliable operation.
When a call is activated the panel will
run the system in that mode for a
minimum of 2 minutes.
When the system is satisfied, the
panel will not resume the same call for
a minimum of 2 minutes.
A built-in timer prevents the system
from rapidly switching between
heating and cooling. At the end of a
call, an adjustable 2 or 5 minute timer
is started and the panel will not switch
to the opposing system until the timer
has expired.
The W2 TIMER sets the total amount
of time delay before second stage
heating is energized. 1st stage heat
will stay energized when 2nd stage
heat activates.
The Heating Limit potentiometer sets
the supply air temperature at which
the heating is cycled off and the fan
continues to run, until the supply air
temperature has dropped below the
heating limit set point.
The Cooling Limit potentiometer sets
the supply air temperature at which
the cooling is cycled off and the fan
continues to run, until the supply air
temperature has risen above the
cooling limit set point.
Built-In TimerSettings
Minimum RunTimer
Short CycleTimer
ChangeoverTimer
5
10
1520
25
30
35
W2 TIMER
Stage TwoHeating Timer
Heating and Cooling Limit Settings
*Short Cycle Timer
*Minimum Run Timer
*Changeover Timer
*Opposing System Service Timer
*Second Stage Heating Timer
2 minutes, fixed.
2 minutes, fixed.
2 or 5 minutes
.20 minutes, fixed.
5 to 35 minutes,adjustable.
DIP switch 1 allows the NCM300 to
operate the fan during the 60/90 second
purge mode. Works in heat and cool
mode. Set the switch to OFF to allow the
system to operate it’s own fan purge.
7 DIP switches allow you to select the features that will
allow the panel to operate your HVAC system.
DIP switch 2 selects a purge time of 60
seconds or 90 seconds. The damper(s) on
the last zone(s) calling will be held open
for 60 or 90 seconds.
Select between 2 or 5 minutes of
change over time delay. The panel will
not switch to the opposing system
until the timer has expired.
Select the type of HVAC system the
panel is controlling. Heat Pump or
Gas/Oil/Hydronic heat with A/C.
Selecting the Options Using the DIP Switches
Select the GAS position when setting
up for gas or heat pump applications.
Select HYDRO when setting up for
straight electric or hydronic heating
applications.
Select 20 minutes of time delay for
opposing system calls or, 0 minutes
and the panel will work on majority
rules only.
Select ON if you are using a Supply
Air Sensor with the NCM300. Select
OFF if you have not installed a sensor.
NOTE: DIP SWITCH #8 HAS NO FUNCTION
AND IS NOT USED!
FAN DELAY OFF < > ON
PURGE 60s < > 90s
FAN HYDRO < > GAS
OP SYS 0m < > 20m
SAS OFF < > ON
3EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646 E-Mail- [email protected]
WARNING: THESE PANELS ARE DESIGNED FOR USE WITH 24VAC. DO NOT USE OTHER VOLTAGES! USE CAUTION TO
AVOID ELECTRIC SHOCK OR EQUIPMENT DAMAGE. ALL WIRING SHOULD BE DONE TO LOCAL AND NATIONAL CODES
AND ORDINANCES. USE 18 AWG SOLID COPPER, COLOR-CODED, MULTI-CONDUCTOR THERMOSTAT CABLE.
ThermostatWiring
INSTALLATION INSTRUCTIONS
Typical heat/cool thermostat wiring in zone 1, 2, or 3.
Figure 2a.
ZONE THERMOSTAT
60 708050
50
60
70
80
RYW G
SYSTEM
COOL OFF HEATAUTO ON
FAN
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
Figure 2b. Typical heat/cool or heat pump application wiring in zone 1, with separate Vacation or Emergency Heat switch. Part #VAC or RES.
The NCM300 zone control panel requires standard 1 stage heat/cool thermostats in all zones,
regardless of the application. 2nd stage heat output is controlled by an adjustable timer on the
panel. The NCM300 will work with a select type of heat pump thermostat in Zone 1 only. Easy
thermostat wiring diagrams are shown below.
Figure 2d. Wiring for heat pump thermostat in zone 1. NOTE: Constant L output in the Emergency heat mode. Remove the factory jumper between W1 and Y terminals and install a new jumper between W1 and E terminals.
Honeywell #T8011 or T8411ZONE THERMOSTAT
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
ZONE THERMOSTAT
OptionalVAC or RES
SWITCH
60 708050
50
60
70
80
RYW G
SYSTEM
COOL OFF HEATAUTO ON
FAN
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
Hold SelectEm. Ht.Aux. Ht. 4:31pm 72
o
Fr
FAN
Auto On
SYSTEM
Cool Off Heat Em. Ht.
BLGORW2YEW1C
*
**
*NEW JUMPER
**REMOVE JUMPER
Zone 1 will also accept heat pump style thermostats with a constant 24vac output during emergency mode, and separable W1 and Y terminals. These thermostats can be field configured & programmed to conventional heat / cool operation.
A White Rodgers Model 1F94-371 programmable is compatible with the NCM300. A Honeywell T-8011 programmable or T-8411 non-programmable is also compatible. These versatile thermostats can be set up in Conventional mode, and still allow use of the Heat pump features. (i.e. Emergency Mode)
HEAT PUMP THERMOSTATS
C
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
E2GRY1W2W1EC
*
Program thermostat for “Heat Pump 3 mode”.Add jumper wire as shown.Set the “E2/P” switch to E2.
ZONE THERMOSTAT #1
W
WHITE-RODGERS1F94-371
*
Zone 1 will accept heat pump style thermostats with a constant 24vac
output during Emergency Mode, and/or separable W1 and Y terminals.
Use a programmable White Rodgers 1F94-371 or Honeywell Model
T8011 programmable or T8411 non programmable. Other compatible
Models include the White Rodgers 1F93-380, 1F95-377, and the
CTC Model# 43403.
Figure 2c.
3
4
2REDLED
4
The NCM300 panel was designed to
be easy to understand and wire up.
We have provided several typical
diagrams to review. Your actual field
wiring may vary.
Typical gas/electric system wiring
using a single transformer is shown
below. Note the jumper (link)
between RC and RH. There is no
need to install your own jumper.
System Wiring
SingleTransformerGas/Electric Systems
Heat Pumpwith O TypeReversing Valve
Two TransformerSystems
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646 E-Mail- [email protected]
Figure 3a.
Figure 3c.
Figure 3b.
Simple Fossil Fuel Application
Figure 3d. Single stage heat pump and 1or 2 stage furnace.
XOYC
R
W2
W1
Y
G
C
R
B R W
OUTSIDE AIRT’STAT 25* F.Part# BTDP
GAS/OILFurnace
1or2 STAGE
HEAT PUMP1 STAGE
FOSSIL FUEL SET-UP w/OAT
O
Y
G
W2/E
W1/B
RH
RC
SYSTEM
NCM300
Discharge AirT-stat 135* F.
NOTE: Discharge Thermostat can be adjustable Snap-disctype, or Remote bulb type.Opens on temperature riseto lockout the “Y” circuit.Range = 100 - 200 F.
RC/RHLINK
W2/E
W1/B
SYSTEMSYSTEM
RHRC
O
YG
RC/RHLINKRC/RHLINK
Cut Rc/Rh JumperCut Rc/Rh Jumper
CIRCULATORRELAY OR HOT
WATER ZONE VALVECONNECTION
T
T
OILBURNER
PRIMARYCONTROL
Y
C
Y
G
C
R
Y
G
C
R
TYPICAL FANCENTER
TERMINALBLOCKOUTDOOR
CONDENSINGUNIT *W W*
T
T
Either OneNot Both
TT
ISOLATION TERMINALS OR WIRES
* Note: Your Air Handler may include a W terminal. That means it may have it’s own isolation circuit. If you can confirm this, simply connect the W1/B terminal to the W terminal on the air handler. Do not cut the Rc / Rh jumper. Wire up your Oil Burner, Circulator relay, or Hydronic Zone valve to the isolation contacts or wires provided in the air handler. (Follow dashed lines)The fan is controlled via time delay relay inside the air handler.
NCM300
Typical heat pump system wiring with electric
resistance backup heat. Wire up the reversing
valve to either O or W1/B, depending on your
type of system. Applies to air cooled or
geothermal / ground source systems.
Conventional Heat Pump System
AIR HANDLERWITH 1 0R 2 STAGE
ELECTRIC RESISTANCE BACKUP HEAT
HEAT PUMP1 STAGE
NCM300
X / W
OorB
Y
C
R
W2/E
W1/B
SYSTEMSYSTEM
RH
RC
O
YG
RC/RHLINKRC/RHLINK
W2
W1
Y
G
C
R
W2
W1
Y
G
C
R
**
* Connect either the O or the W1/B.In a typical O type reversing valve system, there will not be a connection to the W1/B terminal!
* Connect either the O or the W1/B.In a typical O type reversing valve system, there will not be a connection to the W1/B terminal!
W2/E
W1/B
SYSTEMSYSTEM
RH
RC
O
Y
G
RC/RHLINKRC/RHLINK
NCM300GAS/OILFurnace
1or2 STAGE
Y
C
OUTDOORCONDENSING
UNIT
G
Y1
W2
C
R
G
Y1
W2
C
R
W1W1
Note: All zone dampers default to the "OPEN"
position after a purge delay has occurred.
Dampers also default “OPEN” during
changeover & short cycle delays, and when
all zone demands are satisfied, and no
signals are detected from the thermostats.
Common 24vac
Constant 24vac HOT
24vac to Open a damper(s)
24vac to Close a damper(s)
Terminal M1
Terminal M2
Terminal M4
Terminal M6
ZONE MODULE DAMPER MOTOR TERMINAL BLOCK DESIGNATION & FUNCTION
.
.
2 Wire Spring Return Motor Wiring
EWC Controls Spring Return Motor Wiring
A Spring Open Damper is wired to M1 & M6A Spring Close Damper is wired to M1 & M4
M1
M2
M4
M6{
MA-ESR
NC NO C M M
AuxilarySPDTEnd SwitchDry ContactsRated for24vac only
M1
M2
M4
M6
ZONE MOTOR
REFERENCE THESE DIAGRAMS PRIOR TO INSTALLATION AND POWER WIRING. DOING SO WILL SAVE TIME AND LABOR LATER ON.
Patented Optical Damper Motor Actuators
Figure 4a
Figure 4c
Figure 5
All Models SMDL & BMDL Damper Wiring
24
1
M1
M2
M4
M6
ZONE MOTOR
All Models MA-ND & MA-URD Damper Wiring
46
1
Patented Optical Damper Motor Actuators
Figure 4b
M1
M2
M4
M6
ZONE MOTOR
On all these dampers and most older style dampers, including competitor’s dampers, always wire up number to number.Contact EWC Controls Technical Support when you are on the job site for assistance with damper wiring.
Do not overload your transformer!
Multiple MA-ND & MA-URD Damper Wiring on a Single Zone
46
1
M1
M2
M4
M6
ZONE MOTOR
46
14
61
Patented Optical Damper Motor Actuatorsor new Min/Max Actuators
Figure 6
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
Either oneNot both
DAMPER WIRING
SERVICE GUIDESome HelpfulGuidelines
Using the LEDIndicators
D e t e c t i n g 24VAC Short
I s o l a t i n g24VAC ShortsPanel or Wiring
Dampers NotRespondingProperly
HVAC SystemNot RespondingProperly
All voltage measurements on the panel
should be made with the ground lead
of your meter on terminal C of the
24VAC input terminals.
All VAC measurements at the HVAC
system terminals (W1/B, O, Y, W2/E &
G) should be made with the meter
ground lead on the system's C terminal
at the HVAC system.
The STATUS LED should blink at
1second on / 1 second off, to indicate
the microprocessor is operating
properly.
The SUPPLY AIR LIMIT LED will
illuminate if the panel senses a
discharge temperature in excess of the
high or low limit set points. The LED will
blink rapidly if the sensor is open or
shorted. The panel will function
normally but with no supply air
temperature control, until the open or
short is repaired.
The ZONE damper LED’s wil l
illuminate to indicate which dampers
should be open.
The W1/REV VALVE LED indicates that
the panel is in the 1st stage heating
mode.
The W2/EM LED indicates 2nd stage
heat or Emergency heat has been
energized.
The COMPRESSOR LED indicates the
compressor is energized.
The FAN LED indicates the fan is
energized.
The STATUS LED will be off, you will measure 24VAC at the transformer terminals R & C, but not at any damper M1&M2 terminals, or any zone thermostat R & C terminals. CAUTION: The thermal fuse will be very hot.
Remove the power to the panel and allow the thermal poly fuse to cool down.
Remove the wire at each zone thermostat R terminal and test if the short still persists by restoring power to the zone panel and testing as described above. If the short dis-appears, check the zone thermostat wiring and the thermostat itself. This applies if the thermostat requires the 24 volt (C)common, or the R wire could be shorted to ground.
If the Zone LED indicators are
illuminated but the dampers appear to
be malfunctioning, check the damper
field wiring.
If the ZONE LED’s are not responding
properly, check the calls on each zone
thermostat. If the calls indicate a
damper should be energized and is
not, press the TIMER RESET button to
reset the timers. If the problem
persists, see Table 2 for service help.
If the HVAC LED indicators are
responding properly, but the system
appears to be malfunctioning, check
that the HVAC system is wired correctly
and that the DIP switches have been
properly set.
If the HVAC LEDs are not responding
properly, check the calls on each zone
thermostat. If the calls indicate that the
HVAC system should be activated and
is not, press the TMR RESET switch to
reset the timers. Also check that the
DIP switches have been properly set. If
the problem persists, see Table 3 for
trouble shooting help.
6
Table 1. Detecting 24VAC Shorts
If the short still persists disconnect all the wires at each damper terminal (M1, M2, M4 & M6). Restore power and test as described above. If the short clears, check the damper wiring and the dampers for shorts with a continuity tester. If the short still persists, call the technical support hot-line.
Check 24VACPower
Measure 24VAC at all damper M1 and
M2 terminals and all T-stat R and C
terminals. See Table 1 if any of these
voltages are incorrect.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
Damper LED OnBut Damper NotResponding
W1/B, O, Y, W2/E & G LEDS On But SystemNot Responding
LEDs and System Not Responding
MeasuringThermostatVoltages
NCM300Damper LED Not Responding
Testing DamperMotors
Check the damper wiring to insure it is correctly wired. Be sure the wires are secured in the terminals. Test the damper motor to insure it is properly operating. If the problem still persists, contact technical support.
Check the HVAC wiring to insure it is correctly wired. Be sure the wires are secured in the terminals. Check that there is 24VAC at the RC and RH terminals. Use the HVAC system common (C) for the ground lead of your meter. Check that RH and RC are connected if the system uses a single transformer.
For a gas/electric system test the HVAC by shorting terminals R and W1/B together to activate the heater, RC to Y to activate the compressor and RC to G to activate the fan. If the HVAC system has responded properly, call EWC technical support.
For a heat pump system test the heating by shorting terminals R to Y, W1/B and G. For a cooling test short R to Y, O and G.
Press the TMR RESET switch to clear the timers that may be preventing the call. The panel could be in minimum run time, short cycle delay, changeover delay or opposite system timing mode.
Check that the STATUS LED is blinking to insure the computer is operating properly, press the SYSTEM RESET switch if it is not.
Heat/Cool thermostats will apply 24VAC to the W1 terminal during a heating call. During a cooling call, 24VAC is applied to both Y and G.
During a continuous fan call, 24VAC is applied to the G terminal.
Be sure the RC and RH terminals at the thermostats are jumped together if your specific installation requires it.
If the system still does not respond, measure the voltage at each zone thermostat terminal W, Y, EM & G to insure they are correct and a call is in order.
Check that the STATUS LED is blinking. If it is not, the panel may have been placed in the Contractor Test inadvertently by holding the TMR RESET switch for 15 seconds. Press the CPU RESET switch to cancel the Contractor Test.
Press the TMR RESET switch to clear any timers that may be keeping the call off and the damper from not responding.
Check the voltage at each zone thermostat terminal W, Y and G terminals to insure the damper should be activated.
If the problem still persists, call the technical support hot-line.
For a RDN/SMDL/BMDL damper, connect 24VAC common to terminal 1, and 24VAC to terminals 2 and 4. The damper should open. Remove 24VAC from terminal 4 and the damper should close.
For a BMD/SMD/ND/URD damper, connect 24VAC common to terminal 1, and 24VAC to terminal 4 and the damper should open. Remove 24VAC from terminal 4 and apply 24VAC to terminal 6 and the damper should close.
For a power close spring open damper, connect 24VAC to the two motor terminals, and the damper should CLOSE. Remove the 24VAC and the damper should OPEN. For a power open damper, the action will be reversed.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected] 7
Table 2. Detecting Damper Problems
Table 3. Detecting Heating, Cooling and Fan Problems
NCM-300
2
1
SUPPLYAIR
SENSOR
C
W
Y
R
G
ZONE 3T'STAT
ZONE 2T'STAT
M6
M4
M2
M1
ZONE 3MOTOR
M6
M4
M2
M1
ZONE 2MOTOR
M6
M4
M2
M1
ZONE 1MOTOR
R
C
24 VACT'FORMER
O
Y
G
W2/E
W1/B
RH
RC
SYSTEM
CONTROL SYSTEM
5
10
1520
25
30
352nd STAGE
TIMER
34
37
4043
46
49
52LOW TEMP
LIMIT
120
110
130140
150
160
170HIGH TEMP
LIMIT
R7
C8
F1
RC/RHLINK
R14
R26
K1
K2
K3
D3
D4
D5
R35
R44
R51
R56
K4
K5
K6
K7
D7
D8
D9
D10
D6
+
C1 D1 R4 R8
CPURESET
TIMERRESET
C4
D2
U1
U2
U3
C6 C7
R6
R5
R10
R9
R11
R13
R12
R18
R19
R23
R24
R25
R29
R30
C5Y1
C2
C3
R15
R17
R16
R21
R20
R22
R28
R27
R31
Z1
R36
OFF < > ONS
1
FAN DELAY OFF < > ONPURGE 60s < > 90sAUTO CHANGEOVER 2m< >5mSYSTEM HEAT PUMP< >GASFAN HYDRO < > GASOP SYS 0m< >20mSAS OFF < > ON NOT USED
R52
R53
R57
R45
C
W
Y
R
G
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
CONTROLS INC.Englishtown, NJ
U4
U5
R34
R32
R33
R40
R39
R42
R43
R41
R46
R47
R49
R48
R50
R54
R55
R59
R58
R60
R61
R63
R62
R65
R38
R37
R
STATUSLED1
LED2
LED4
LED3
LED6
LED5
LED7
LED8
LED9
SUPPLY AIR LIMIT
ZONE 3 OPEN
ZONE 2 OPEN
ZONE 1 OPEN
W2 / EM
W1 / REV VALVE
COMPRESSOR
FAN
OFF < > ON
S1
FAN DELAY OFF < > ONPURGE 60s < > 90sAUTO CHANGEOVER 2m< >5mSYSTEM HEAT PUMP< >GASFAN ELEC < > GASOP SYS 0m< >20mSAS OFF < > ON NOT USED
8 EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
Blow-up view of NCM-300 showing Factory Dip Switch settings.
RECORD YOUR OWN DIP SWITCHSETTINGS HERE
NC
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9EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
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W1146146
NCM300 Ver 1.2 Copyright EWC/ACI 2002 ALL rights reserved
10 EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
ND
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R D
am
per
Mo
tor
Wir
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146
NCM300 Ver 1.2 Copyright EWC/ACI 2002 ALL rights reserved
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
GRYW1C
ZONE THERMOSTAT #1
C
Commercial GradeThermostat
UNOCC / OCC
SUPPLY AIR SENSOR OPERATIONS AND ONE ZONE FEATURE CONTROL
The One Zone feature allows the homeowner to
control all the zones from a single thermostat by using
an optional switch connected to the One Zone
terminals shown below. A homeowner can switch to
One Zone control when they leave for vacation or as a
night setback mode, and the Zone 1 thermostat will
control all zones. All zone dampers will respond to the
Zone 1thermostat.
One Zone can also be used in commercial
applications with a programmable thermostat in Zone
1 and non-programmable thermostats in all other
zones, thus satisfying the requirements of California
Title 24.
Substantial energy savings and equipment protection
can be obtained with proper use of the One Zone
feature and the supply air sensor.
A Supply Air Sensor can be used to limit supply air
temperatures and prevent over heating of the
equipment during the heating cycle or coil freeze-
up during cooling cycles. Wire the sensor as
shown below and set dip switch #7 to the ON
position. (See Page 2)
The Supply air sensor installs into the supply air
plenum or downstream of the evaporator coil or
heat exchanger and monitors the discharge air
temperature in heating and cooling modes. The
actual temperature is relayed backed to the
microprocessor. When the temperature exceeds
or falls below the HEAT or COOL limit set points,
the microprocessor will de-energize all HEAT or
COOL outputs for a minimum of 3 minutes. It also
energizes the FAN, if it is not already running, to
help dissipate the heat or warm up the evaporator
coil.
There is no differential built in to the sensor! Once
the supply air temperature rises or falls to a safe
value and, the 3 minute time delay has expired,
the microprocessor will restore the HEAT or
COOL outputs. The FAN will de-energize or stay
running, depending on the mode and the
application.
TM
Forced Air Zone Controls
11EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
110
120
130140
150
160
170
HEATING LIMIT34
37
4043
46
49
52COOLING LIMIT
Adjustable Heating & Cooling limit potentiometers
Supply air temperature sensor.
Model SAS
2
1
SUPPLYAIR
SENSORSENSOR
C
W
Y
R
G
EM
ONEZONE
ZONE 1T'STAT
EXTERNALONE ZONESWITCH
24V INDICATOR
One Zone switch.
(OPTIONAL)
One Zone Modevia the Zone 1Thermostat
12 EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
AUTOMATIC CONTRACTOR TEST
The NCM300 has a built-in automatic sequencer that the contractor can initiate to test each zone damper, the HVAC system outputs and the LED indicators.
To start the contractor test, hold the timer Reset switch for 15 seconds and release.The Status LED blinks rapidly to indicate Contractor Test Mode.The panel checks whether Gas/Electric or Heat Pump type system was selected on dip switch #4.
The panel energizes the fan (G ) on, and opens the zone 1 damper. After 60 seconds the Zone 2 damper opens. After 60 seconds the Zone 3 damper opens.
After 60 seconds HEATING (W1/B)energizes. COMPRESSOR (Y) energizes also if Heat Pump mode was selected.
After 120 seconds HEATING (W2)energizes.
After 60 seconds HEATING (W1/B),(W2) and/or (Y) de-energize. FAN (G) continues to run.
After 120 seconds COOLING (O) energizes and COMPRESSOR (Y) energizes.
After 120 seconds COMPRESSOR (Y) de-energizes.
After 60 seconds FAN (G) de-energizes.
End of Contractor Test. The NCM300 resumes normal operation after step 8.
NOTE: Pressing the CPU Reset button at any time during the test, terminates the Contractor mode test and returns the NCM300 to normal operation.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
NOTES: