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 c
hain
ed”
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
ZO
NE
T
HER
MOS
T
A
T
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
EQUIPM
ENT
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
T
R
A
N
S
C
R
C
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 170
F. The cooling limit is fixed at 40
F. 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 10
F 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
