Installation Instructions

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CMM-3U & CMM-3UK Zoning Panel

Installation & Operating Instructions

Form 37-6863A

1 of 6

Product Data

• Single Stage gas and electric systems

• Multi Stage (2H/1C) gas and electric systems

• Heat Pump (3H/1C)

• 2-3 zones

• 5-Year Warranty

Specifications

• Construction: ABS Plastic

• Dimensions: 7 ⅝” x 7 ¼” x 1 ⅜”

• Voltage: 24 Volts AC, 50/60 Hz

• Operating Temperature: 0°- 120°

• Shipping/Storage Temperature: -20°- 140°

• Humidity Range: 5% - 95% Non-Condensing

Kit Contents (CMM-3UK)

• CMM-3U

• CLAS (leaving air sensor)

• COAS (outdoor air sensor for heat pumps)

• 24V Transformer

Recommended Dampers

• CRDS – round damper (24V)

• CZDS – rectangular, side mount motor (24V)

• CZDB – rectangular, bottom mount motor (24V)

• CSPRD – static pressure relief dampers

24V dampers are power close, spring open and are

convertible to power open, spring close

Recommended Thermostats

• 1F78-151 (5+2 programming)

• 1F78-144 (non-programmable)

• 1F85-0471 (5+1+1,5+2,0 programming)

• 1F80-0471 (5+1+1,5+2,0 programming)

• 1F97-1277 (7, 5+1+1,0 programming)

• 1F95-1277 (7, 5+1+1,0 programming)

• 1F85RF-275 (5+1+1,5+2,0 programming) (wireless)

To prevent electrical shock and/or

equipment damage, disconnect electric

power to system at main fuse or circuit

breaker box until installation is com

lete

SAVE THESE INSTRUCTIONS FOR

FUTURE USE!

Failure to read and follow all instructions

carefully before installing or operating

this control could cause personal injury

and/or

ert

dama



Terminal

Destination

Description

W2/E….…… 2nd Stage Heat (Emergency heat for Heat Pumps)

G…………… Fan Relay

Y…………… Compressor

R…………… Power for Heating/Cooling

W/OB……… Heat Relay/Changeover Valve for Heat Pump

C…………… Common Wire

Summary of content (6 pages)

PAGE 1
CMM-3U & CMM-3UK Zoning Panel Installation & Operating Instructions Product Data • • • • • Single Stage gas and electric systems Multi Stage (2H/1C) gas and electric systems Heat Pump (3H/1C) 2-3 zones 5-Year Warranty • • • • • • Construction: ABS Plastic Dimensions: 7 ⅝” x 7 ¼” x 1 ⅜” Voltage: 24 Volts AC, 50/60 Hz Operating Temperature: 0°- 120° Shipping/Storage Temperature: -20°- 140° Humidity Range: 5% - 95% Non-Condensing • • • • CMM-3U CLAS (leaving air sensor) COAS (outdoor air sensor for heat p
PAGE 2
System Mode Indicator Power Indicator LED HVAC Equipment Connections Zone Terminal Blocks for Zone Thermostats Zone Terminal Blocks for Zone Dampers CLAS and COAS Terminal Blocks 24V Transformer Terminal Blocks Sensor Limits Automatic Resetting Fuse Zone Calling Indicators Mounting Keyholes Two at Top also. Pump Controls, power transformer, Outdoor Air Sensor and Leaving Air Sensor are wired.
PAGE 3
by wiring for specific applications. Below is shown the most typical settings. Review each function for you application. OPERATION The CMM-3U can be controlled by conventional single stage or heat pump thermostats. Each thermostat can then call for heating, cooling or the fan. When a thermostat calls the panel will keep open the damper to the calling zone, if not already open, close the dampers to the zone(s) not calling and activate the appropriate HVAC equipment.
PAGE 4
130 140 Minimum On Timer 150 120 The CMM-3U also has a minimum on time whenever the compressor operates in order to prevent frequent short cycling. Once there is a call for cooling or the compressor on a heat pump, the CMM-3U will hold that call for a period of 2 minutes. 160 110 170 HIGH LIMIT The CLAS requires 2 wires from the sensor to the LAS terminals on the CMM-3U panel.
PAGE 5
return, normally open dampers use only COM and CLS terminals. COM OPN CLS WIRING DIAGRAM 4 - HVAC Equipment – Conventional Two Stage Heating and Single Stage Cooling M1 M4 M6 Y1 G O W1/B R W2 W3/E Zone Thermostats – The thermostats wiring will be for Conventional single stage (Y-G-R-W-C) or Heat Pump (Y-GR-E-C and O or B). See Wiring Diagram 1and 2 each type of thermostat.
PAGE 6
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 terminal strip. The zone will drop out. Check the thermostat wiring for a mis-wiring or short that keeps the zone calling. Damper Motor Checkout To checkout the dampers, the panel provides 24VAC to the COM and OPEN when the damper is to be open and 24VAC to COM and CLOSE when the damper is to be CLOSED.