Honeywell 69-1361 manual

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Copyright © 2000 Honeywell Inc. • All Rights Reserved

SCHEMATIC

MM-2 MASTERTROL® MINI-ZONE™-2

69-1361

The Mastertrol® Mini-Zone™ -2 Zone Control Panel,

Model MM-2, controls 2 zones on any single stage

heating and cooling system. Each zone is controlled

by a thermostat which operates a motorized damper

in the zone duct to control the flow of conditioned air

to the zone. (Up to 2 dampers may be wired to a

single zone. When 3 or more dampers are required

a Slave Damper Control Relay, Model SDCR, is re-

quired.)

The Zone 1 Thermostat requires a manual

changeover subbase with “O” and “B” terminals. The

“O” terminal must make with R when the subbase is

switched to the COOL Mode. The “B” terminal must

make with R when the subbase is switched to the

HEAT Mode. When the Zone 1 Subbase in either the

Heat or Cool Mode, either zone thermostat can call

for the respective mode. The zone thermostat will en-

ergize it’s zone relay which activates the heating or

cooling controls, opens it’s zone damper and closes

the damper to the zone that is satisfied. When both

zone thermostats are satisfied the heating (or cool-

ing) will shut off and all zone dampers will return to

their normal position. The normal position of the zone

dampers is set by the OPEN/CLOSED (O/C) slide

switch next to the motor terminals.

SYSTEM CONNECTIONS: The MM-2

System Terminals, on the far left side of

the panel, wire to the HVAC Unit. These

terminals are isolated “dry” switching con-

tacts similar to any typical thermostat.

These terminals are wired to the HVAC

Unit the same as any thermostat would,

when not using this zone control panel.

The MM-2 connections used are typically

the RC-G-Y-W terminals wired the the

HVAC Unit Control Center.

HYDRO-AIR Systems - When using the

MM-2 with a Hydro-Air System, one

which uses a hot water coil in the air han-

dler to provide heating in place of a fur-

nace, the wiring is almost similar to that

shown. In this application the Heat Re-

lay shown may be a zone valve or circu-

lator relay. The Fan must be controlled

by an Aquastat. In order to bring the fan

on when the water in the coil is heated.

This is wired independently of the MM-2

panel.

OIL FURNACES - When using the MM-2 with an Oil

Fired Furnace to provide heating, the T and T termi-

nals on the Oil Burner Primary Control must wire to

the RH and W terminals, on the left side of the MM-

NOTE: Once operational the Oil Furnace contin-

ues to run when all zones are satisfied, reverse the

RH and W wires on the MM-2.

DAMPER MOTOR WIRING - This diagram shows

Trol-A-Temp’s typical power open-power closed op-

posed blade damper motors. Note the jumper wire

required on the motor terminals 2 and 5. Round

Spring Return Dampers can also be wired to the

MM-2. When using the ARD-PC, wire to the M1 and

M6 terminals. When using the ARD-PO, wire to the

M1 and M4 terminals.

ZONE THERMOSTAT WIRING - The MM-2 can be

used with several different single stage thermostats.

The wiring shown is for the following recommended

thermostats:

Zone 1 Thermostat Zone 2 Thermostat

TRT(-W) and MCRS(-W) TRT(-W)/T87F

T8090T1003* T8090T1011*

T8602C T8602D

T8601C* T8603D*

*These thermostats may require additional wires.

Refer to the wiring information included with the ther-

mostat for complete information.

456Z

123X

ZONE 2 DAMPER MOTOR

T6/Y

T5/R

T4/W

456Z

123X

HVAC UNIT CONNECTIONS

M11

T6/Y

T5/R

T4/W

5/R

6/Y4/W

MASTERTROL MINI - ZONE

24 VOLT 40 VA

TRANSFOMER

MODEL PMT-40

MODEL MM-2

MODEL DPBT

(T678A)

HEAT RELAY

ZONE 2 THERMOSTAT

ZONE 1 THERMOSTAT

AND SUBBASE

M13557

ZONE 1 DAMPER MOTOR

24 VOLT

TRANSFORMER

FAN RELAY

SYSTEM

ZONE 2

ZONE 1