White Rodgers 1F85-277 Instrukcja Naprawy Pobierz pdf (Strona 125)

INSTALLATION

The Comfort Plus™ Zoning System-3 is a two (2) and three (3) zone

control panel for single stage heating only, cooling only or heating

and cooling. The CMM-3 can control any single stage gas-oil-electric

furnace, hydro-air heating and air conditioning. The CMM-3 panel is

the central control panel where all zone dampers, zone thermostats,

HVAC Equipment and power transformer are wired. When install-

ing the CMM-3 panel it is important to pick a central location where

it is most convenient to bring all the wires. Most often this is at the

furnace or air handler. It is often the most convenient location and

closest to power, the HVAC unit controls and the zone dampers when

typically located at or near the plenum.

The CMM-3 panel is 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 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 separat-

ing 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 CMM-3 can controls single stage heating and cooling HVAC

Equipment. The CMM-3 is compatible with any standard single stage

thermostat and setback thermostats as well. The CMM-3 has various

features that make installation and checkout very simple for all of the

board’s functionality. The CMM-3’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 CMM-3 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 sufﬁ-

cient 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 CMM-3 will im-

mediately 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.

System Mode Indicator

Power Indicator LED

Fan Operation and

Test Jumpers

Boot Button

24V Transformer

Re-Settable Fuse

HVAC Equipment

Connections

Zone Terminal

Blocks for Zone

Thermostats and

Zone Damper

Motors

Zone Calling Indicators

Mounting Keyholes

Two at Top also

CMM-3

CMM-3K ZONE PANEL

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