Zonefirst MINI-MASTERZONE MMP2 User manual
MINI-MASTERZONE™ZONING SYSTEM
MMP2
For Plug-In Damper Motors
2 Zones
Installation and Operating Instructions
Controlling Your Comfort Room by Room
MASTERZONE
™
ZONING
SYSTEM
™
Form 2263-110506 MMP2 Installation and Operating Instructions ©2017 ZONEFIRST®
MINI-MASTERZONE™ZONING SYSTEM
MMP2
Features
Table of Contents
Installation……………………………………….2
Operation………………………………………..3
HVAC Equipment Set-Up…………..………… 3
Checkout..……………………………………… 3
Wiring…………………………………………. 3-4
Troubleshooting……………………………….4-5
Power Indicator LED LED
System Mode Indicator LED
System Mode Indicator LED
24VAC Transformer
Terminals
HVAC Equipment
Terminals
Leaving Air Sensor
Terminals
Sensor Jumper
Zone Thermostat
Terminals
Zone Damper
Connections
Zone Damper Motor
Test Button
Zone Calling Indicator LED
Form 2263-110506 MMP2 Installation and Operating Instructions ©2017 ZONEFIRST®
INSTALLATION
The Mini-MasterZone™Plug-In Damper Zoning System-2, Model MMP2,
is a two (2) zone control panel for single stage heating only, cooling only or
heating and cooling. The MMP2 can control any single stage gas-oil-
electric furnace, hydro-air heating and air conditioning. The MMP2 panel
is the central control panel where all zone dampers, zone thermostats,
HVAC Equipment and power transformer are wired.
When installing the MMP2 panel it is important to pick a central location
where it is most convenient to bring all the wires. Most often this is near
the furnace or air handler and closest to power, the HVAC unit controls
and the zone dampers when typically located at or near the plenum.
The MMP2 case and cover are made of sturdy ABS plastic and can be
mounted to any flat surface. It is recommended that the panel be
mounted to a wall or return plenum and NOT on the furnace or plenum
where it will be in contact with the high heating temperatures. The panel
can be located in an attic space or in an enclosed cabinet of a rooftop unit,
provided the panel enclosed and not in direct exposure to the elements.
The cover easily removes from the case by pulling firmly and separating
the cover from the case exposing the circuit board. There are 4 key-hole
mounting points in each corner of the case. The case has openings in the
rear of the case as well as the side for all wiring. Wiring can come from
the back as well as the side in order to make a neat installation.
OPERATION
The MMP2 controls single stage heating and cooling HVAC Equipment.
The MMP2 is compatible with any standard single stage thermostat and
setback thermostats as well. The MMP2 has various features that make
installation and checkout very simple for all of the board’s functionality.
The MMP2’s basic function is zone control. On a call for heating or
cooling, the panel will accept the first call from any zone. Upon accepting
this call the MMP2 will keep open the damper(s) to the zone calling, close
the damper(s) to those zones not calling, activate the needed HVAC
controls for heating or cooling, whichever is being called and not accept
any calls for the opposite mode.
Any calls for the opposite mode will be locked out until the initial mode is
either satisfied or a period of time has elapsed that is sufficient for the
first mode to satisfy, a maximum of 20 minutes. A Patent Pending
sequence determines the time the unit has been running or needs to
continue to run in order to adequately provide conditioning for each
mode. If a particular mode has already been calling for 20 minutes or
longer and an opposite call comes in the MMP2 will immediately drop the
mode, enter the purge mode in order to dissipate the conditioned air into
the zones calling before switching over to provide the new conditioning
call to its zones.
PURGE TIME
Once a call is satisfied the MMP2 drops the call for the heating or cooling
unit controls, whichever was calling and hold the damper(s) to the zone(s)
that were last calling during the Purge Mode. The Purge mode is
nominally 2 minutes and allows the excess conditioned air in the plenum
to be distributed only to the zone(s) that were last calling. This eliminates
the problem of overshooting the temperature in the satisfied zones.
Once all zone thermostats are satisfied for heating and cooling, the MMP3
can now accept Fan calls allowing Continuous Air Circulation (CAC) in
those zones where the thermostat’s Fan Switch is set to
ON. These zone dampers will be OPEN while the dampers to the zones
where the Fan Switch is set to AUTO will be CLOSED.
When all zone thermostats are satisfied for both Heating and Cooling, and
all Fan switches are set to AUTO position, the HVAC unit will be off and all
zone dampers will return to a normally open position. Once a zone calls
for heating, cooling or fan, the dampers to the calling zones remain open
and the dampers to the zones not calling will close.
HVAC Equipment Set-Up
The MMP2 is factory set for conventional fossil fuel (oil or gas) single stage
heating and cooling.
Jumpers on the panel are for NO SENSOR and TEST. The NO SENSOR
jumper must be placed on both pins when the sensor (ZPS) is not used.
The TEST jumper (when placed on both pins) accelerates the panel timings
in order to provide a quick checkout of the panel functions. During typical
operating conditions this jumper should not be on both pins
CHANGEOVER TIMER
Whenever a call is made for either heating or cooling, the changeover
timer is activated in order to track the amount of time heating or cooling
is on. When an opposite call is made after a first call is existing the
changeover timer calculates the amount of time the unit has already been
supplying the first mode in order to determine how long it will hold off the
opposite call. If an opposite call is made shortly after the first call, the
opposite call may be held off for as much as 20 minutes. If the first call or
subsequent calls for the first call mode has had that mode operating for
up to 20 minutes already and an opposite call comes in after 20 minutes,
the changeover timer will immediately recognize the opposite call,
shutting off the current mode, enter the purge mode and automatically
switch to the opposite mode.
The longer a call has been running up to 20 minutes, the shorter the wait
time will be for an opposite call. If a call is over 20 minutes and an
opposite call is made the changeover will be immediate following the
purge time. This intelligent changeover timing makes the MMP2 unique
to any other zoning system.
CHECKOUT
The MMP2 has unique features that simplify the checkout of the system
and has LED readouts that constantly indicate the system operation. Once
24 Volt Power is applied to the panel the Green Power LED will illuminate.
This will stay illuminated constantly when power is applied.
The System LED will provide several different indications based upon color
and if it is flashing.
Heat ON - RED
Heat Over Limit - RED Flashing
Cool ON - GREEN
Cool Over Limit - Green Flashing
Fan ON - AMBER
Purge - AMBER Flashing
Each zone has its own small Green indicator LED next to each zone relay.
This light is lit whenever the zone damper is to be open, either on a call or
when all zones are satisfied.
Form 2263-110506 MMP2 Installation and Operating Instructions ©2017 ZONEFIRST®
WIRING
The MMP2 is very simple to wire and requires only a minimum number of
connections. The MMP2 terminal blocks are screw-less and all wires can
easily be pushed into their respective terminal by de-pressing the button
for each point and releasing once the wire is seated. To remove the wire,
just press its button again and remove the wire.
Zone Dampers –The MMP2 powers only the 12VDC plug-in dampers.
Each damper comes with a modular cord and plugs (RJ11) already installed
to allow each zone damper to just plug into the MMP2 panel. Additional
dampers can be slaved to one another by using the dual ports (inter-
changeable) on each MP12 actuator. Additional dampers are connected
“daisy chained” from one damper to the next. A maximum of 10 dampers
per zone is recommended.
Upon installation it is recommended that as each motor is connected that
each motor is cycled, before connecting the next motor, to insure proper
operation of that motor and to minimize troubleshooting looking for a
possible bad motor or wire connection.
Plug-In Damper Wiring
To Additional Dampers
Up to 10 Per Zone, if used.
Zone Damper
Connector on
Zone Panel
NOTE: It does NOT matter which jack on damper
goes to the panel or additional dampers.
PLUG-IN ZONE DAMPER
25 Foot Modular Cord
(Provided with each damper)
Zone Thermostats –The thermostats wiring for single stage can be four or
five wire. The fifth wire being the C-Common terminal for 24 Volt
powered thermostats. There are 5 terminals on the MMP2 for each
thermostat, marked Y-G-R-W-C. This wiring is shown on Wiring Diagram 1
for single stage thermostats.
Zone Thermostat Wiring
G
Y
R
W
C
ZONE THERMOSTAT
G
Y
R
W
C
70°
ZONE THERMOSTAT
HVAC Equipment –The HVAC equipment will follow Wiring Diagram 2 for
Single Stage Systems. The MMP2 can also control Heating Only and
Cooling Only as well as both Heating and Cooling.
HVAC Equipment Wiring
Y COMPRESSOR RELAY
G FAN RELAY
W HEAT RELAY
R 24V. TRANSFORMER C
FURNACE CONTROLS
OUTDOOR CONDENSING UNIT
Y
G
W
R
EQUIPMENT
Transformer –A separate 24 Volt AC, 40VA Transformer is recommended
to power the control panel, thermostats and dampers. Often the
transformer on the HVAC unit only has enough power for its own controls.
Therefore it is recommended a separate transformer be used to power
this panel and the dampers wired to it.
Transformer Wiring
24V TRANS
C
RC
R
T24 -24V 40VA
TRANSFORMER
Zone Plenum Sensor
The Zone Mix-Air Sensor, Model ZPS, is a remote sensor that is located in
the supply air duct to sense the leaving air temperature of the HVAC Unit.
The ZPS is a high limit protection for the heating and a low limit protection
for the cooling. When zoning, the airflow through the HVAC Unit is
critical. The ZPS protects the equipment in low air flow situations as well
as when by-pass air is being directed back into the return air duct.
The heating limit is fixed at 170F. The cooling limit is fixed at 40F. When
the ZPS senses heating above its set point, or cooling below its set point,
the MMP2 will drop both stages of heating or cooling. The ZPS must sense
a 10F fall for heating or rise for cooling before re-activating the first
stages of heating or cooling.
The ZPS requires 2 wires from the sensor to the LAT terminals on the
MMP2 panel. The ZPS probe can also be adjusted for length by loosening
the end nut and sliding the probe thru the mounting plate in order for the
probe to pass through any duct insulation
Form 2263-110506 MMP2 Installation and Operating Instructions ©2017 ZONEFIRST®
Leaving Air Sensor
(Mounted in Supply Air before Zone Dampers)
Model ZPS
LAS Terminals
On Zone Panel
NOTE: If the ZPS is not used, the NO SENSOR jumper located just above
the LAT terminals must be on the pins.
After installing the ZPS, use the chart supplied with the ZPS to check the
Ohm reading for the appropriate duct temperature.
TROUBLESHOOTING
The MMP2 is a very simple control to troubleshoot, especially with the
LED indicators. The only other device needed is a simple Volt/Ohm meter.
Almost all problems can be traced to an external component or wiring to
the MMP2. While the MMP2 has been designed to operate under
extreme voltage conditions and is fuse protected, like any computer the
micro-processor can hang up and not operate properly.
Turn off the power to the panel for several seconds until the LEDs got out
and then turn the power back on to see if the panel resets. In many
instances this resolves the problem.
The first check is for 24VAC Power to the panel. When there is power the
Green Power LED will be lit. If not check the transformer and the power
supply to it.
Zone(s) Not Calling
Each zone has a Green LED next to the zone relay when it is calling. The
LED being lit shows that the call is being recognized by the MMP2. If a
zone is supposed to be calling and the Zone LED is not on, check for 24VAC
across the thermostat terminal C and the Y, if a Cool call, W if a Heat Call,
or G if a Fan call. If there is no voltage here at the panel the panel is not
getting the signal from the thermostat. The problem is mis-wiring, a
broken wire or a problem in the thermostat. To check the zone on the
panel, place jumper from R to Y to simulate a Cool call, R to W to simulate
a Heat call, or R to G to simulate a Fan call. By jumping these terminals
the zone LED will activate.
Zone(s) Will Not Shut Off
If a zone will not stop calling, the Zone LED should still be on. Depending
on the call disconnect the Y, W or G wire from the zone terminal strip on
the panel. The call from that zone will drop out when the thermostat wire
is removed. Check the thermostat wiring for a mis-wiring or short that
keeps the zone calling.
If the thermostat wire is disconnected from the proper terminal on the
zone and the zone LED remains lit, re-boot the panel to see if the call
drops. If the call still stays on, turn power off to the panel for 10 seconds
and then turn back on. Once power is restored and the thermostat is
disconnected the call should drop from the zone, if not replace the panel.
Damper Motor Checkout Procedure
In order to determine the operation of the damper motors, the panel
motor plug can be checked to determine if power is being supplied from
the panel. If there is power at the motor plug, the problem may be a
broken wire or poor connection in the cord or the motor itself.
To check the power to the motor from the damper plug on the panel,
switch your meter to DC Volts. Note the wires on the plug and check
across either Positive and Negative wires. Note that each plug has two
positive leads and two negative leads. Both positive and both negative
leads are wired together. The meter will read either Plus (+) or Minus (-)
12VDC depending if the damper is to be Open or Closed respectively.
DAMPER CLOSED
-12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
VDC
-12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
-12VDC-12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
VDC
DAMPER OPEN
+12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
VDC
+12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
+12VDC+12VDC NOT USED
NOT USED
POSITIVE (+)
POSITIVE (+)
NEGATIVE (-)
MOTOR PLUG
VDC
When using multiple dampers on a single zone, please note to have no
more than 10 dampers on a single zone. Adding dampers beyond the
recommended number may cause all dampers to be slow to operate and
may not fully cycle between open and closed.
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