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VARIABLE SPEED INJECTION (

MIXING = VAR

)

A standard wet rotor circulator is connected to the 363 on the

Cls / Var

terminal (16). The 363 increases or decreases the power output to the
circulator when there is a

Mix Demand. The circulator speed varies to

maintain the correct mixed supply water temperature at the mix sensor. For
correct sizing and piping of the variable speed injection driven circulator,
refer to essay E 021. A visual indication of the current variable speed output
is displayed in the LCD in the form of a segmented bar graph. Two small
indicators at the top of the graph indicate whether the output is increasing
or decreasing.

FLOATING ACTION (

MIXING = FLOT

)

A floating action actuator motor is connected to the 363 on the

Opn and Cls

/ Var terminals (15 and 16). The 363 pulses the actuator motor open or close
to maintain the correct supply water temperature at the mix sensor when
there is a

Mix Demand. The mixing valve that the actuator is connected to

can be either a 2-way, 3-way or 4-way valve. A visual indication as to
whether the control is currently opening or closing the mixing valve is
displayed in the LCD with the words

Open

and

Close

. Also, a visual

indication of the current position of the valve is displayed in the LCD in the
form of a segmented bar graph.

STORAGE (

MIXING = STOR

)

Refer to Section E on storage systems for a description of this selection.

Section D3 —Alternate Mixing Demands

In addition to using conventional thermostats to provide a mixing demand as described in Section D1, the 363 can use a number of other
methods to provide a

Demand.

10K 1 INDOOR SENSOR (

10K 1

INDR

)

Set the

10K 1

item to

INDR

to add an indoor sensor for temperature control of a single zone

mixing system. The indoor sensor is connected to the

Com and 10K 1 terminals (20 and 21).

In addition, power must be applied to the

Mix Demand terminals (1 and 2) as described in

Section D1. With the indoor sensor connected, the 363 is able to sense the actual room
temperature. With this information, the 363 provides a more constant water flow through the
mixing system. At the same time, indoor feedback fine tunes the supply water temperature in
the mixing system to prevent over heating or under heating. To adjust the room temperature
for the mixing zone, use the

MIX ROOM

Occupied or UnOccupied setting in the Adjust menu

at the control.

10K 1 ZONE CONTROL (

10K 1

MIX

)

Set the

10K 1

item to

MIX

to add indoor temperature feedback control of multiple mixing zones.

Control of mixing zones is provided by connecting a tekmar zone control to the 363. The zone
control provides its own internal mixing demand to the 363. In this case, there is no need to
provide an external

Demand as described earlier in Section D1. The zone control is capable

of automatically adjusting the

MIX TRG

temperature to improve building occupant comfort and

system performance.

10K 1 SLAB SENSOR (

10K 1

SLAB

)

Set the

10K 1

item to

SLAB

to add a slab sensor for temperature control of a single zone mixing

system. The 363 can use a slab sensor to control the actual slab temperature. A slab sensor
is placed in the slab and connected to the

Com and the 10K 1 terminals (20 and 21). Power

must be applied to the

Mix Demand terminals (1 and 2) as described in Section D1. With the

slab sensor connected, the 363 will limit the mixing supply temperature in order to maintain
the slab sensor between the

SLAB MIN

and

SLAB MAX

settings.

Slab Minimum

(

SLAB MIN

)

The

SLAB MIN

sets the minimum allowed core temperature of the slab as long as the control is not in a WWSD. Caution should be

used when adjusting the

SLAB MIN

setting as this may lead to overheating of the zone during mild conditions. If the

AWAY

setting

is selected in the Schedule menu, the 363 ignores the

SLAB MIN

setting.

Slab Maximum

(

SLAB MAX

)

The

SLAB MAX

sets the maximum allowed core temperature of the slab. If the slab is to be maintained at a fixed core temperature,

set

SLAB MAX

and

SLAB MIN

items to the same setting.

Sequence, Section D

tekmar

Indoor Sensor

tekmar

363 Control

LR 58233

E150539

LR 58223

N R T L / C

Universal Reset Control 363

Mixing, Boiler & DHW

Mix Demand

Boiler Demand

DHW Demand

Setpoint Demand

Minimum

Maximum

Item

View

DHW

LR 58233

E150539

tekmar

Zone Control

Zone Control 367

One & Two Stage / One Stage & Floating

Power

Heat Required

Zone 2 / Hi stage /
Close / Ventilation

System Pump

24 hr. Timer

• Dial the desired duration
of the UnOccupied period.
• Press start button at the time of day
you want the UnOcc. period to begin.
Timer Active light turns on.

Start

UnOccupied

Duration

0 = always Occupied
24 = always UnOccupied

Zone 1 / Lo stage /
Open / Cooling

Zone 4 / Hi stage
Close

Zone 3 / Lo stage
Open

Zone 6 / Hi stage
Close

Zone 5 / Lo stage
Open

(21

40
(4)

100
(38)