tekmar 363 Installation

Page 1

- Data Brochure

D 363

Universal Reset Control 363

12/08

The Universal Reset Control 363 is a microprocessor based control designed to maximize the comfort and efﬁciency provided by a hydronic heating system. The control automatically adjusts the boiler and mixed loop water temperatures that are delivered to the heating system by using outdoor reset. For a mixing device, the 363 can use a variable speed driven wet-rotor circulator or a ﬂoating action driven mixing valve. The 363 is capable of controlling an indirect Domestic Hot Water (DHW) storage tank and / or a setpoint load. The temperature of individual zones can be controlled by connecting a conventional thermostat system or a tekmar Zone Control to the 363.

The 363 control includes a large Liquid Crystal Display (LCD) in order to view system status and operating information. The LCD and user key pad are used to set the control’s adjustment and to monitor pump and boiler running hours, DHW tank temperatures, outdoor and system high and low temperatures, boiler ﬁring cycles, plus many other useful items.

Several energy saving features have been incorporated into the 363 such as Warm Weather Shut Down (WWSD), DHW post purge, system setback, DHW priority, Morning Boost, Soft Start and an automatic differential for boiler control. The 363 also has a unique feature that allows the control to supply heat to the mixed system from either the boiler or a thermal storage tank.

Reset Ratio

Characterized Heating Curve

±10% 60 Hz 1800 VA

Do not apply power

22 23

Com19tN1/

10K

tN2

Com24Mix25Boil

Vie

% %

ItemMenu

Input (MIX)

Room

Temperature

Unit (RTU)

Test

WWS

off

not testing

red

testing

red

testing paused

For maximum heat, press and hold

Test

button for 3 seconds.

Meets Class B: Canadian ICES FCC Part 15

Out

Vie

% %

ItemMenu

Input

Remote

Display

Module (RDM)

WWS

Date Code

H1153E

Input

Universal Sensor

Input

Universal Sensor

LR 58233

Input

Outdoor

Included

Sensor

Included

Input

tekmar Timer

Input (MIX)

tekmar Slab Sensor

Input (MIX)

tekmar Indoor Sensor

Input (BOIL

E150539

or MIX)

tekmar Zone Control

Note:

Boiler, DH W, setpoint, or mix demand must be powered wi th 20 to 260 V (ac) bef ore the control will opera te pump/valve outputs or the boiler is able to ﬁr e.

Input

Mix Demand

signal

Input

Boiler

Demand

signal

Input

Setpoint or

DHW

Demand

signal

Input

120 V (ac)

Power

Supply

Output

Boiler System

Pump

Output

DHW Pump OR

DHW Valve

View

Open

Item

Universal Reset Control 363

Mixing, Boiler & DHW

2 31

Com

Mix

Dem

Demand

Output

Mixed System

Pump

Boil

Dem

Setp/ DHW

Output

Boiler

Power N L

8 11

Boil

Mix Demand

Mix P2

Boiler Demand DHW Demand Setpoint Demand WWSD

Minimum Maximum

Pwr

Boiler Opn Cls/

Mix

Var

C US

UnOc

DHW

10 12 14 16

9 17

DHW

Pmp / Vlv

Output

Var. Speed

Driven Pump

Output

Mixing Valve &

Actuating Motor

Universal

(optional)

Setback

None

See product literature INSTALLATION CATEGORY II

Made in Canada by tekmar Control Systems Ltd. tektra 929-05

Power 115 V Relays 230 V (ac) 7.5 A 1/3 hp, pilot duty 240 VA Var. Pump 230 V (ac) 2.4 A 1/6 hp, fuse T2.5 A 250V Demands 20 to 260 V (ac) 2 VA

Signal wiring must be rated at least 300 V. Supply wiring must be rated 90°C minimum

10K

Com UnO

Input

Sensor

1 of 40

Page 2

How To Use The Data Brochure

This brochure is organized into four main sections. They are: 1) Sequence

Troubleshooting

User Interface

of Operation

installation. The

Control Settings

by the control. The control functions of each adjustable item are described in the

. The

Sequence of Operation

, as this contains important information on the overall operation of the control. Then read the sub sections that apply to your

section (starting at DIP Switch Settings) of this brochure describes the various items that are adjusted and displayed

section has five sub sections. We recommend reading

User Interface .......................................... pg 2

Description of Display Elements ............ pg 3

Sequence of Operation ............................pg 4

Section A: General

Section B: Boiler Reset

Section C: DHW / Setpoint

Section D: Mixing Reset

Section E: Storage

Installation ............................................... pg 16

Electrical Connections.................. pg 17

Testing The Wiring........................ pg 19

DIP Switch Settings ..................................pg 22

........................ pg 4

................. pg 6

.......... pg 9

............... pg 12

........................ pg 15

of Operation

Access Levels ................................................ pg 22

Control Settings ............................................. pg 23

View Menu

Adjust Menu

Schedule Menu

Miscellaneous Menu

RTU Menu

Testing and Troubleshooting ...................... pg 31

Monitor Menu

Error Messages

Technical Data ............................................... pg 40

Limited Warranty ........................................... pg 40

, 2)

Installation

Sequence of Operation

........................................... pg 23

........................................ pg 24

................................... pg 28

........................................... pg 29

...................................... pg 33

.................................. pg 35

, 3)

Control Settings

Section A: General

.......................... pg 29

of the

Sequence

, and 4)

Reference Material: Essay E 003: Characterized Heating Curve and Reset Ratio

E 021: Mixing Methods and Sizing of Variable Speed Injection Pumps

User Interface

The 363 uses a Liquid Crystal Display (LCD) as the method of supplying information. You use the LCD in order to setup and monitor the operation of your system. The 363 has four push buttons (Menu, Item, , ) for selecting and adjusting settings. As you program your control, record your settings in the Adjust Menu table which is found in the second half of this brochure.



All of the items displayed by the control are organized into various menus. These menus are listed on the left hand side of the display (Menu Field). To select a menu, use the button. By pressing and releasing the available menu. Once a menu is selected, there will be a group of items that can be viewed within that menu.

Item



The abbreviated name of the selected item will be displayed in the item field of the display. To view the next available item, press and release the the last available item in a menu, pressing and releasing the display to the first item in the selected menu.

Adjust



To make an adjustment to a setting in the control, begin by selecting the appropriate menu using the

and / or button to make the adjustment.

button. Then select the desired item using the

button, the display will advance to the next

Item

button. Once you have reached

Item

button will return the

Item

button. Finally, use the

Item

Additional information can be gained by observing the Status and Pointers fields of the LCD. The status field will indicate which of the control’s outputs are currently active. Most symbols in the status field are only visible when the View Menu is selected.

2 of 40

Page 3

Display

Item Field

Displays an abbreviated name of the selected item

Menu Field

Displays the current menu

Status Field

Displays the current status of the control’s inputs, outputs and operation

View Adjust

Monitor

Schd

Misc

Open Close

Item

Aux

UnOcc

DHW

°F °

Number Field

Displays the current value of the selected item

Mix Demand Boiler Demand

min

sec

Ovr

DHW Demand Setpoint Demand WWSD

Minimum

Maximum

Buttons

Selects Menus, Items and

{

adjusts settings

Symbol Description

Open Close

DHW

Aux

Open / Close

Displays when the actuator is opening or closing the mixing valve.

Mixing Device Output Scale

Shows output of injection pump or mixing valve. Arrows show whether the output is increasing or decreasing.

Burner

Displays when the boiler relay is turned on.

Pump

Displays when the boiler pump 1 and / or mixing pump 2 is operating.

DHW Pump / Valve

Displays when the DHW pump or valve is on.

Storage Operation

Displays when the variable speed driven injection pump is drawing heat from the storage tank.

Boost

Displays when the control is in boost after setback.

UnOcc

Occ

Ovr

F, °C, sec,

min, hr

UnOccupied Schedule

Displays when the control is in unoccupied mode.

Occupied Schedule

Displays when the control is in occupied mode.

Override

Displays when the control is in override mode.

Warning

Displays when an error exists or when a limit has been reached.

Lock - Unlock

Displays whether the access levels are locked or unlocked.

°F, °C, sec, min, hr

Units of measurement.

Pointer

Displays the control operation as indicated by the text.

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Page 4

Sequence of Operation

Characterized Heating Curve

Outdoor DSGN

Increasing Water Temperature

MIX or BOIL DSGN

Decreasing Air Temperature

MIX

BOIL INDR

Section A

General Operation

Section B

Boiler Reset

Section C

Domestic Hot

Section D

Mixing Reset

Section E

Storage

Water/Setpoint

Page 4 - 6

Page 6 - 8

Page 9 - 11

Page 12 - 15

Page 15 -16

Section A —General Operation

POWERING UP THE CONTROL

When the Universal Reset Control 363 is powered up, the control displays the control type number in the LCD for 2 seconds. Next, the software version is displayed for 2 seconds. Finally, the control enters into the normal operating mode and the LCD defaults to displaying the current outdoor air temperature.

CHARACTERIZED HEATING CURVE OR RESET RATIO

The 363 has two methods of varying the supply water temperature based on the outdoor air temperature. The installer can select either a

Characterized Heating Curve

The

Characterized Heating Curve

based on outdoor air temperature and optionally indoor temperature is the most accurate. The control takes into account the type of terminal unit that the system is using. Since different types of terminal units transfer heat to a space using different proportions of radiation, convection and conduction, the supply water temperature must be controlled differently. Once the control is told what type of terminal unit is used, the control varies the supply water temperature according to the type of terminal unit. This improves the control of the air temperature in the building.

Characterized Heating Curve

or a

Reset Ratio

method of controlling the supply water temperature

MIX or BOIL DSGN

Reset Ratio

The outdoor air temperature. This method does not take into account the type of terminal unit that the heating system is using and therefore is not as accurate as a

Curve

Reset Ratio

method of controlling the supply water temperature is based solely on the

TERMINAL UNITS (Boil TERM / MIX TERM)

When using a unit. The terminal unit determines the shape of the to how the terminal unit delivers heat into the building space. The 363 provides for selection between six different terminal unit types: two types of hydronic radiant floor heat, fancoil, fin– tube convector, radiator, and baseboard.

Hydronic Radiant Floor

HRF1 is a heavy, or high mass, hydronic radiant floor system. This type of a hydronic radiant floor is embedded in either a thick concrete or gypsum pour. This heating system has a large thermal mass and is slow acting.

Hydronic Radiant Floor

HRF2 is a light, or low mass, hydronic radiant floor system. Most commonly, this type of radiant heating system is either attached to the bottom of a wood sub floor, suspended in the joist space, or sandwiched between the subfloor and the surface. This type of radiant system has a relatively low thermal mass and responds faster than a high mass system.

Fancoil

A fancoil terminal unit or air handling unit (AHU) consists of an hydronic heating coil and either a fan or blower. Air is forced across the coil at a constant velocity by the fan or blower and is then delivered into the building space.

Characterized Heating Curve

(HRF 1)

(HRF 2)

(COIL)

Characterized Heating

, the control requires the selection of a terminal

Characterized Heating Curve

according

MIX

BOIL STRT

Outdoor DSGN

OUT STRT

Decreasing Air Temperature

Reset Ratio

HRF 1

HRF 2

Increasing Water Temperature

COIL

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Page 5

Fin–tube Convector

(CONV)

A convector terminal unit is made up of a heating element with fins on it. This type of terminal unit relies on the natural convection of air across the heating element to deliver heated air into the space. The amount of natural convection is dependant on the supply water temperature to the heating element and the room air temperature.

Radiator

(RAD)

CONV

A radiator terminal unit has a large heated surface that is exposed to the room. A radiator provides heat to the room through radiant heat transfer and natural convection.

Baseboard

(BASE)

A baseboard terminal unit is similar to a radiator, but has a low profile and is installed at the

RAD

base of the wall. The proportion of heat transferred by radiation from a baseboard is greater than that from a fin-tube convector.

BASE

SETBACK (UnOccupied)

To provide greater energy savings, the 363 has a setback capability. With setback, the supply water temperatures in the system are reduced when the building is not used (AWAY) or when the building is UnOccupied. By reducing water temperatures, air temperature in the space can be reduced even when thermostat(s) are not turned down. This feature is enabled by setting the

Setback / None DIP

switch to the

Setback

position, and providing either

an external signal or an internal override. Note: AWAY does not require the DIP switch =

UnO

Com

Setback.

External UnOccupied

An external signal can place the 363 into an UnOccupied mode. Any time the and the mode. When in the UnOccupied mode, the 363 adjusts the supply water temperature(s) based on the

Com

(23) terminals are shorted together, the control operates in the UnOccupied

UnOcc

segment is displayed in the LCD. The

UnOcc

settings made in the

UnO Sw

(22)

Timer Switch

control.

Internal Overrides

The 363 has a number of setback overrides that are selected through the setback overrides have priority over any external setback signal. Any time an override is in effect, the

Ovr

segment displays in the LCD.

Schd

Menu. These

Schd

UnOcc

Ovr

Temporary (TMPY)

If a temporary override is selected, the 363 operates in the selected override mode for 3 hours. Once completed, the control reverts to the previous operation.

Permanent (PERM)

If a permanent override is selected, the 363 operates in the selected override mode until a new override is selected.

Away (AWAY)

If the AWAY override is selected, the 363 operates with a fixed WWSD of 62˚F (17˚C) and a fixed room temperature of 62˚F (17˚C). Any DHW demand is ignored. The setpoint operation is not affected by the AWAY override.

BOOSTING (Boil BST / MIX BST)

When the control changes from the enters into a the system are raised above their normal values for a period of time to provide a faster recovery from the building’s setback temperature. The maximum length of the boost is selected in the user interface. This setting is only available if a not available for a Control is used.

Typical settings for the BOOST function vary between 30 minutes and two hours for a building that has a fast responding heating system. For a building that has a slow responding heating system, a setting between four hours and eight hours is typical. After a BOOST time is selected, the setback timer must be adjusted to come out of setback some time in advance of the desired temperature at the correct time, the BOOST setting should be lengthened and the setback timer should be adjusted accordingly. If the building is up to temperature before the required time, the BOOST setting should be shortened and the setback timer should be adjusted accordingly. If the system is operating near its design conditions or if the supply water temperatures are being limited by settings made in the control, the time required to bring the building up to temperature may be longer than expected.

Boosting

Reset Ratio

mode. In this mode, the supply water temperatures to

Characterized Heating Curve

Occupied

UnOccupied

, and not needed or available if a tekmar Zone

time. This time in advance is normally the same as the BOOST setting. If the building is not up to

to the

Occupied

mode, it

is selected; It is

5 of 40

Water Temperature

UnOcc to Occ

Boost

Boil TRG

(Occupied)

Boil TRG

(UnOccupied)

Boost setting - 20 minutes to 8 hours

Time

Self Adjusting

Water Temperature

Page 6

SOFT START (SOF STRT)

The SOF STRT function allows the 363 to slowly ramp the water temperature up to the required supply temperature. By allowing the temperature in the system to be adjusted slowly, the control reduces any thermal expansion noises and stresses that may be caused by a quick change in supply water temperature.

WARM WEATHER SHUT DOWN (WWSD)

When the outdoor air temperature rises above the WWSD setting, the 363 turns on the Weather Shut Down, the displayed if there is a demand. However, the control does not operate the heating system to satisfy these demands. The control does respond to either a in Section C.

EXERCISING (EXERCISE)

The 363 has a built-in pump and valve exercising function. The exercising period is adjustable and comes factory set at 70 hours. If a pump or valve output on the control has not been operated at least once during every exercising period, the control turns on the output for 10 seconds. This minimizes the possibility of a pump or valve seizing during a long period of inactivity. In the case where a mixing valve is being used as the mixing device, the 363 ensures that the valve operates over its entire range at least once each exercising period.

Note: The exercising function does not work if power to the control, valves or pumps is disconnected.

WWSD

pointer in the display. When the control is in Warm

DHW Demand

Mixing Demand

or a

Setpoint Demand

and

Boiler Demand

and operates as described

pointers are

Section B —Boiler Reset (Mode = —1—)

Section B1

General Boiler

Operation

Section B2

Alternate Boiler

Demands

Section B1 —General Boiler Operation

BOILER DEMAND

A boiler demand is generated by applying a voltage between 24 and 240 V (ac) across the is applied, the is not in WWSD, it closes the Boiler Pump contact which starts the boiler pump. The control turns on the Boil P1 segment in the LCD. The 363 calculates a Boil TRG supply temperature based on the outdoor air temperature and settings. The 363 then fires the boiler, if required, to achieve and / or maintain the target supply temperature.

BOILER START (Boil STRT)

The Boil STRT temperature is the boiler supply water temperature that the heating system requires when the outdoor air temperature equals the

OUT STRT air temperature setting.

OUTDOOR START (OUT STRT)

The OUT STRT temperature is the outdoor air temperature at which the control provides the Boil STRT supply water temperature to the system.

OUTDOOR DESIGN (OUT DSGN) (

RESET RATIO

The OUT DSGN is the outdoor air temperature that is the typical coldest temperature of the year where the building is located. This temperature is used when doing heat loss calculations for the building.

Boil Dem

Boiler Demand

(4) and

Com Dem

pointer is displayed in the LCD. If the 363

(

RESET RATIO

(

RESET RATIO

CHARACTERIZED HEATING CURVE

(3) terminals. Once voltage

)

Boiler Reset

Ratio

Boil MIN

Boil STRT

OUT STRT

(27)

OUT DSGN

WWSD Occ

WWSD Unocc

(16)

40 (5)

Outdoor Air Temperature

Boil DSGN

Boil SETB

(-7)

Boil MAX

(-18)

-20

(-29)

210 (99)

190 (88)

170 (77)

150 (66)

130 (54)

110

(43)

(32)

(21)

Supply Water Temperature

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Page 7

BOILER DESIGN (Boil DSGN) (

RESET RATIO

CHARACTERIZED HEATING CURVE

)

The Boil DSGN temperature is the supply water temperature required to heat the boiler zones when the outdoor air is as cold as the Outdoor Design temperature.

BOILER MINIMUM (Boil MIN) (

RESET RATIO

The Boil MIN is the lowest water temperature that the control is allowed to use as a boiler target (Boil TRG) if the 363 calculates a Boil TRG temperature that is below the Boil MIN setting, the Boil TRG temperature is adjusted to be at least the Boil MIN setting. During this condition, if the boiler is operating, the pointer turns on in the LCD while the Boil TRG or the Boil SUP temperature is viewed. If the installed boiler is designed for condensing

CHARACTERIZED HEATING CURVE

)

temperature. During mild conditions,

Minimum

Boil Min + 1/2 Boiler Differential

Boil Min - 1/2 Boiler Differential

Pointer On

Boil MIN

operation, set the Boil MIN adjustment to OFF.

BOILER MAXIMUM (Boil MAX) (

RESET RATIO

The Boil MAX is the highest water temperature that the control is allowed to use as a Boil TRG temperature. If the control does target Boil MAX, and the Boil SUP temperature is near the Boil MAX temperature, the

Maximum

temperature is viewed. At no time does the control operate the boiler

CHARACTERIZED HEATING CURVE

pointer turns on in the LCD while the Boil TRG or the Boil SUP

)

Pointer On

Boil Max + 1/2 Boiler Differential

Boil Max - 1/2 Boiler Differential

Pointer On

above 248˚F (120˚C).

WARM WEATHER SHUT DOWN (WWSD) OCC & UNOCC (

RESET RATIO

When the outdoor air temperature rises above the WWSD setting, the 363 turns on the is in Warm Weather Shut Down, the the heating system to satisfy this demand. The control does respond to either a

CHARACTERIZED HEATING CURVE

Boiler Demand

)

pointer is displayed if there is a demand. However, the control does not operate

WWSD

DHW Demand

pointer in the display. When the control

or a

Setpoint Demand

described in Section C.

BOILER SETBACK (Boil SETB) (

RESET RATIO

)

The Boil SETB is the amount that the boiler supply water temperature is reduced when the 363 is placed into an using an internal or an external setback as described in Section A. This setting is only available if the and

Setback / None

BOILER INDOOR (Boil INDR) (

CHARACTERIZED HEATING CURVE

DIP switch is set to

)

Setback

Reset Ratio

The Boil INDR is the room temperature used in the original heat loss calculations for the building. This setting establishes the beginning of the

Characterized Heating Curve

for the boiler zones. This single setting

replaces the Boil STRT water temperature and OUT STRT air temperature settings used by the

BOILER ROOM OCC & UNOCC (Boil ROOM) (

CHARACTERIZED HEATING CURVE

Reset Ratio

)

Boiler Characterized

Heating Curve

Boil MIN

Boil DSGN

The Boil ROOM is the desired room temperature for the boiler zones and it provides a parallel shift of the temperature desired by the occupants is often different from the designed indoor temperature (Boil INDR). If the room temperature is not

Characterized Heating Curve

. The room

WWSD Occ

WWSD Unocc

correct, adjusting the Boil ROOM setting increases or decreases the amount of heat available to the building. If the is set to

Occupied

Setback

and

UnOccupied

, a Boil ROOM setting must be made for both the

modes.

BOILER TARGET TEMPERATURE (Boil TRG) (

RESET RATIO

The Boil TRG temperature is determined from either the

Heating Curve

CHARACTERIZED HEATING CURVE

or the

Reset Ratio

settings and the outdoor air tempera-

Setback / None

)

Characterized

DIP switch

Boil IND

(27)

Boil ROOM Occ

Boil ROOM UnOcc

(16)

(5)

Outdoor Air Temperature

(-7)

ture. The control displays the temperature that it is currently trying to maintain as the boiler supply temperature. If the control does not presently have a requirement for heat, it displays “- - -” in the LCD.

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Boil MAX

and operates as

UnOccupied

mode,

DIP switch is selected

Boil MAX

OUT DSGN

(-18)

-20

(-29)

210 (99)

190 (88)

170 (77)

150 (66)

130 (54)

110

(43)

(32)

(21)

(10)

Supply Water Temperature

Page 8

DIFFERENTIAL (Boil DIFF)

An on / off heat source such as a boiler must be operated with a differential to prevent short cycling. This differential is centered around the Boil TRG temperature. If the boiler supply temperature drops 1/2 of the differential setting below the Boil TRG temperature, the 363 closes the boiler contact to fire the boiler. If the boiler supply temperature rises 1/2 of the differential setting above the Boil TRG temperature, the 363 opens the boiler contact to turn off the boiler. With the 363, either a fixed or automatic differential setting is selected. If the AUTO differential is selected, the 363 automatically adjusts the boiler differential setting under the current load conditions to minimize short cycling.

BOILER OPERATION

When the 363 determines that boiler operation is required, the

Boiler

contact terminals (12 and 13) close. While the boiler contact is

closed, the burner segment in the LCD is displayed.

BOILER PUMP (P1) OPERATION

The

Boiler Pump

also closes whenever the 363 receives a

contact (P1, terminal 8) closes whenever there is a boiler demand and the 363 is not in WWSD. The boiler pump contact

Mixing Demand

and is not in WWSD. Refer to the Mixing Reset Section D for more information.

For boiler pump contact operation during either DHW or Setpoint operation, refer to the DHW / Setpoint Section C.

BOILER PURGE (PURGE P1)

After the boiler demand is satisfied, the 363 continues to operate the

Boiler Pump

(P1, terminal 8) for a period of time. The length of time that

the boiler pump continues to run is adjustable (PURGE P1). This setting allows any excess heat to be purged out of the boiler after the burner is shut off. This also helps to prevent the water in the boiler from flashing into

or or

steam after the boiler is shut off. The boiler pump continues to run either until the purging time has elapsed or the Boil SUP temperature has dropped more than a differential below the Boil MIN setting. However, there must not be any motorized valves that will restrict water flow through the pump and boiler.

FIRE DELAY (FIRE DLY)

The FIRE DLY is the delay time that may happen between the time that the 363 closes the boiler contact and the burner fires. This delay is usually the result of a burner pre-purge or other forms of time delay built into the burner’s safety circuits.

BOILER MASS (Boil MASS)

The Boil MASS setting allows the 363 to adjust to different types of heat sources depending on their thermal mass.

Light

(LITE) 

The LITE setting is selected if the boiler that is being used has a low thermal mass. This means that the boiler has a very small water content and has very little metal in the heat exchanger. A boiler that has a low thermal mass comes up to temperature quite rapidly. This is typical of many copper fin-tube boilers.

Medium

(MED) 

The MED setting is selected if the boiler that is being used has a medium thermal mass. This means that the boiler either has a large water content and a low metal content or a low water content and a high metal content. This is typical of many modern residential cast iron boilers.

Heavy

(HEVY) 

The HEVY setting is selected if the boiler that is being used has a high thermal mass. This means that the boiler has both a large water content and a large metal content. A boiler that has a high thermal mass is relatively slow in coming up to temperature. This is typical of many commercial cast iron and steel tube boilers.

Section B2 —Alternate Boiler Demands

10K 1 ZONE CONTROL (10K 1 = Boil)

The 10K 1 item selects the type of device to be connected. Set the 10K 1 item to Boil to add a tekmar Zone control to the boiler loop. Control of boiler zones is then provided by a tekmar Zone Control connected to the

363. The Zone Control provides its own internal boiler demand to the 363. In this case, there is no need to provide an external boiler demand as described earlier in Section B1. The Zone Control is also capable of adjusting the Boil TRG temperature, if required, to provide improved building occupant comfort and system performance.

tekmar

Zone Control

Power

Occupied

UnOccupied

Heat Required

Optimum Start / Stop

24 hr. Timer

System Pump

Timer Active

70°F (21°C)

12 hrs.

Zone 1 / Lo stage /

Open / Cooling

• Dial the desired duration

618

of the UnOccupied period.

Zone 2 / Hi stage /

• Press start button at the time of day

Close / Ventilation

you want the UnOcc. period to begin.

Zone 3 / Lo stage

Timer Active light turns on.

Open

100

Zone 4 / Hi stage

(4)

(38)

UnOccupied

Duration

Zone 5 / Lo stage

Start

Open

Zone 6 / Hi stage

Close 0 = always Occupied 24 = always UnOccupied

Zone Control 367

One & Two Stage / One Stage & Floating

LR 58233

E150539

tekmar

363 Control

Mix Demand

View

Boiler Demand

DHW Demand Setpoint Demand WWSD

Minimum

DHW

Maximum

Item

Universal Reset Control 363

Mixing, Boiler & DHW

NRTL/C

LR 58223

8 of 40

Page 9

Section C —Domestic Hot Water (DHW) and Setpoint

Pump

Section C1

Domestic Hot Water (DHW)

Section C2

DHW Priority

Section C3

DHW with Low

Temperature

Boilers

Section C1 —Domestic Hot Water (DHW)

DHW DEMAND

DHW demand

from a tekmar sensor.

External Demand

The 363 registers an external demand for DHW when a voltage between 24 and 240 V (ac) is applied across the aquastat or setpoint control is used as a switch in the DHW demand circuit. Once the 363 detects a DHW demand, the operates as described below.

Internal Demand Sensor

If the 10K 2 setting is selected as DHW, the 363 looks for a DHW sensor connected to the

10K 2

desired indirect DHW tank temperature. When the temperature at the DHW sensor drops 3˚F (1.5˚C) below the DHW TANK setting, the

DHW Demand

An advantage to using the DHW sensor is that the control can display the current DHW TANK temperature and record the highest and lowest DHW TANK temperatures. Also, the 363 can control the DHW temperature with more accuracy than when using an aquastat.

is generated on the 363 by one of two methods: either an external DHW demand from an aquastat or an internal demand

and the

DHW Demand

Com Dem

terminals (5 and 3). Either a DHW

pointer turns on in the LCD and the control

and the

(10K 2 = NONE)

Setp/DHW

(10K 2 = DHW)

Com Sen

terminals (18 and 17). The DHW TANK setting is used to set the

pointer turns on in the LCD and the control operates as described below.

Section C4

Setpoint

24 to 240 V (ac)

DHW

Storage Tank

Boil

Com

Dem

Aquastat

Com

Setp/

DHW

10K

DHW DEVICE (DHW THRU)

Once the 363 has received a of DHW device selected. The DHW device is selected using the DHW THRU item in the menu.

DHW Valve

If VALV is selected as the DHW device and there is a

Pmp / Vlv

flow through the DHW tank’s heat exchanger once the DHW valve is opened. The 363 operates the boiler to provide a sufficient boiler supply temperature to the DHW tank.

DHW Pump

If PUMP is selected as the DHW device, the 363 assumes that the DHW pump provides adequate flow through both the DHW tank heat exchanger and the boiler. To provide heat to the DHW tank, the 363 closes the boiler to provide a sufficient Boil SUP temperature to the DHW tank. If using a primary loop with the DHW tank piped in primary / secondary, select DHW VALV.

(VALV)

contact (9 and 10) and the

(PUMP)

BOILER TARGET DURING DHW GENERATION (Boil 0TRG)

The Boil TRG temperature during DHW operation depends on whether an external or internal demand is occurring. The DHW demand overrides the reset water temperature.

External Demand

If the control receives a as the DHW Heat Exchanger setting (DHW XCHG).

Internal Demand

If the control receives a TRG temperature is at least as hot as the DHW TANK setting plus 40˚F (22˚C).

DHW DURING UNOCCUPIED

The DHW operation during an that is being used. For this function to operate, the control must have the

(10K 2 = NONE)

(10K 2 = DHW)

DHW demand

UnOccupied

, the sequence of operation depends on the type

Valve

Adjust

DHW demand

Boil P1

contact (7 and 8). The boiler pump provides

DHW Pmp / Vlv

contact (9 and 10) and operates the

, the 363 closes the

DHW

through an external device such as an aquastat, the Boil TRG temperature is at least as hot

from a DHW sensor attached to the

period depends on the type of

9 of 40

10K 2

and the

DHW demand

Setback / None

Com Sen

that the 363 is receiving and the type of setback

DIP switch set to

terminals (18 and 17), the Boil

Setback

Page 10

External Demand (Aquastat)

If an external

DHW Demand



is used, the control can either continue operation of the DHW system as it would during the

period or the control can ignore a call for DHW as long as the control is in an

UnOccupied

Occupied

mode.

Internal Demand (Sensor)

If an internal as long as the control is in an

Away



If the AWAY setting is made in the the DIP switch =

DHW Demand

Setback



is used, a DHW TANK

UnOccupied

Schd

mode.

menu, any

Unocc

temperature can be set. This is the temperature that the tank maintains

DHW Demand

is ignored and the tank cools off. Note: AWAY does not require

Section C2 —DHW Priority

DHW PRIORITY

It is often desirable to limit or even stop the flow of heat to the heating system when the DHW tank calls for heat. This allows faster recovery of the DHW tank. The 363 has a number of features that it can use when dealing with DHW priority. The features available depend on the type of DHW device that is being used and the type of

Mixing Priority

It can be selected that the DHW tank has priority over the mixing zones. If this option is chosen, the mixing device is throttled back on a call for DHW. The By reducing the mixing device output, more heat is directed to the DHW tank. The boiler zones continue to operate without change. This setting is available if DHW THRU is set to PUMP or VALV.

Boiler and Mixing Priority

It can be selected that the DHW tank has priority over the boiler and mixing zones. If this option is chosen, the mixing device is throttled back and the boiler pump (P1) turns off on a call for DHW. This setting is available only if a pump is selected as the DHW device (DHW THRU set to PUMP). Ensure that the flow rate of the DHW pump is adequate for both the DHW heat exchanger and the boiler.

DHW Demand

(DHW PRI = MIX) 

Mix P2

pump continues to operate based on the

Mix Demand

(DHW PRI = B+M) 

the control receives.

DHW

DHW PRIORITY OVERRIDE

To prevent the building from cooling off too much or the possibility of a potential freeze up during DHW priority, the 363 limits the amount of time for DHW priority. As the outdoor air temperature becomes colder, the length of time that the 363 provides DHW priority is reduced. Once the allowed time for priority has elapsed, the 363 overrides the DHW priority and operates DHW and heating simultaneously.

CONDITIONAL DHW PRIORITY

If the boiler supply temperature is maintained at or above the required temperature during DHW generation, this indicates that the boiler has enough capacity for DHW and possibly heating as well. As long as the boiler supply temperature is maintained near its target, DHW and heating occurs simultaneously.

DHW POST PURGE

After the

DHW Demand

is removed, the 363 performs a purge on the boiler. The 363 shuts off the boiler and continues to operate either the DHW pump or the DHW valve and the boiler pump. This purges the residual heat from the boiler into the DHW tank. The 363 continues this purge for a maximum of four minutes or until the boiler supply temperature drops 20˚F (11˚C) below the DHW Boil TRG temperature. The 363 also stops the purge if the boiler supply temperature drops below the current Boil TRG temperature.

DHW MIXING PURGE

After DHW operation, the boiler is extremely hot. At the same time, the heating zones may have cooled off considerably after being off for a period of time. To avoid thermally shocking the boiler after DHW priority, the 363 shuts off the boiler, but continues to operate the DHW while restarting the heating system. This allows some of the DHW return water to mix with the cool return water from the zones and temper the boiler return water.

Increasing Air Temperature

Outdoor air temperature

Increasing Time

DHW priority demand time limit

10 of 40

Page 11

Section C3 —DHW with Low Temperature Boilers (without Mixing)

If DHW is to be incorporated into a low temperature system such as a radiant heating system, a mixing device is often installed to isolate the high DHW supply temperature from the lower system supply temperature. If a mixing device is not installed, high temperature water could be supplied to the low temperature system while trying to satisfy the DHW demand. This may result in damage to the low temperature heating system. The 363 is capable of providing DHW in such a system while ensuring that the low temperature in the heating system does not exceed its allowed maximum setting.

To prevent high temperature water from being introduced into the heating system, the Boiler Pump (P1) must be turned off during a call for DHW. To do this, DHW THRU must be set to PUMP, DHW PRI must be set to B + M, and Boil MIN must be set to OFF.

On a call for DHW, the 363 provides DHW priority by shutting off the Boiler Pump (P1) for a period of time. This time is based on the outdoor air temperature as described in the DHW Priority Override section. If the

Demand

is not satisfied within the allotted time, the boiler shuts off and the

boiler’s heat is purged into the DHW tank.

DHW

Sequence, Section C3

Once the boiler supply temperature is sufficiently reduced, the DHW pump

shuts off. Then the heating system is turned on for a period of time to prevent the building from cooling off. After a period of heating, if the DHW demand is still present, the 363 shuts off the heating system and provides heat to the DHW tank once again.

For correct operation, close attention must be paid to the mechanical layout of the system. When the 363 turns off the Boiler Pump (P1), flow to the heating system must stop. If flow is not stopped, the temperature in the heating system can exceed the maximum desired temperature and can result in damage to the heating system.

Section C4 —Setpoint

The 363 can handle setpoint loads which are high temperature loads connected to the boiler loop that are not heating loads or DHW. For this feature to be available, either a DHW sensor must be used or the DHW THRU item is set to NONE. If an external DHW demand is used as described in Section C1, you cannot use the setpoint feature.

SETPOINT DEMAND

The 363 registers a across the

Setp / DHW

setpoint demand pointer turns on in the LCD. The control operates the boiler to maintain at least the boiler supply temperature as set by the SETPOINT does not turn on the Boiler Pump (P1). If a setpoint load is used, the installer must make sure that the setpoint device provides its own flow through the boiler.

BOILER TARGET DURING SETPOINT (Boil TRG)

The Boil TRG temperature during a setting. This temperature is maintained as long as the 363 has a

Setpoint Demand

and the

Com Dem

Setpoint Demand

when a voltage between 24 and 240 V (ac) is applied

terminals (5 and 3). Once voltage is applied, the

Occ

setting. The

Setpoint Demand

is increased to at least the SETPOINT

Setpoint Demand

24 to 240 V (ac)

Com Dem

Setp/

Boil

DHW

Dem

SETPOINT SETBACK (SETPOINT UnOcc)

If the 363 is placed into setback, the operates normally. If a system override of AWAY is selected, the 363 operates the SETPOINT load at the

Setpoint Dem

SETPOINT PRIORITY (SETP PRI = B+M)

is ignored if the SETPOINT

UnOcc

setting is set to OFF. Otherwise, the setpoint

Occupied

setting.

For setpoint loads to have priority over the Boiler and Mixing zones, set SETP PRI to B + M. If this option is chosen, the output from the mixing device is suspended and the Boiler Pump (P1) turns off during a

Priority Override



Setpoint Demand

In order to prevent the building from cooling off too much or the possibility of a potential freeze up during setpoint priority, the 363 limits the amount of time for setpoint priority. As the outdoor air temperature becomes colder, the length of time the 363 provides setpoint priority is reduced. Once the allowed time for priority has elapsed, the 363 overrides the setpoint priority and operates setpoint and heating simultaneously.

Conditional Setpoint Priority



If the Boil SUP temperature is maintained at or above the required temperature during setpoint generation, this indicates that the boiler has enough capacity for setpoint and possibly heating as well. As long as the Boil TRG temperature is maintained, setpoint and heating occur at the same time.

11 of 40

Page 12

Section D —Mixing Reset

Section D1

General Mixing

Operation

Section D2

Mixing Device

Section D3

Alternate Mixing

Demands

Section D1—General Mixing Operation

MIXING DEMAND

A mixing demand is generated by applying a voltage between 24 and 240 V (ac) across the applied, the in WWSD, the 363 closes the

ontrol turns on the boiler pump and mixing pump segments in the LCD.

The 363 calculates a MIX TRG supply temperature based on the outdoor air temperature and settings. If required, the 363 operates the boiler in order to provide heat to the mixing device.

MIXING START (MIX STRT)

The MIX STRT temperature is the mixing supply water temperature that the heating system requires when the outdoor air temperature equals the

OUT STRT

OUTDOOR START (OUT STRT)

The OUT STRT temperature is the outdoor air temperature at which the control provides the MIX STRT supply water temperature to the system.

OUTDOOR DESIGN (OUT DSGN) (

RESET RATIO

MIX DESIGN (MIX DSGN)

(

RESET RATIO

The MIX DSGN temperature is the supply water temperature required to heat the mixing zones when the outdoor air is as cold as the Outdoor Design temperature.

Mix Demand

air temperature.

terminals (1 and 2). Once voltage is

pointer is displayed in the LCD. If the 363 is not

Mix P2

contact and the

(

RESET RATIO

(

RESET RATIO

CHARACTERIZED HEATING CURVE

Boil P1

contact. The

)

24 to 240 V (ac)

Mixing Reset

Ratio

MIX STRT

OUT STRT

(27)

WWSD Occ

WWSD Unocc

(16)

40 (5)

Outdoor Air Temperature

Demand

MIX DSGN

MIX SETB

OUT DSGN

(-7)

Mix

MIX MAX

(-18)

-20

(-29)

210 (99)

190 (88)

170 (77)

150 (66)

130 (54)

110 (43)

(32

(21)

Supply Water Temperature

MIXING MAXIMUM (MIX MAX)

(

RESET RATIO

CHARACTERIZED HEATING CURVE

)

The MIX MAX sets the highest water temperature that the control is allowed to calculate as the MIX TRG temperature. If the control does target the MIX MAX setting, and the MIX SUP temperature is within 5˚F (3˚C) of the MIX MAX, the either the MIX TRG temperature or the MIX SUP

Maximum

pointer is displayed in the LCD while

temperature is

being viewed.

WARM WEATHER SHUT DOWN (WWSD) OCC & UNOCC (

RESET RATIO

CHARACTERIZED HEATING CURVE

)

When the outdoor air temperature rises above the WWSD setting, the 363 turns on the is in Warm Weather Shut Down, the heating system to satisfy this demand. The control does respond to either a

Mix Demand

pointer is displayed if there is a demand. However, the control does not operate the

DHW Demand

described in Section C.

12 of 40

y W

Pointer On Pointer On

WWSD

pointer in the display. When the control

or a

Setpoint Demand

and operates as

Mix MAX

Page 13

MIXING SETBACK (MIX SETB)

(

RESET RATIO

)

The MIX SETB is the amount that the mixing supply water temperature is reduced when the 363 is placed into an internal or an external setback as described in Section A. This setting is only available if the switch is set to

Reset Ratio

Setback

MIXING INDOOR (MIX INDR)

(

CHARACTERIZED HEATING CURVE

The MIX INDR is the room temperature used in the original heat loss calculations for the building. This setting establishes the beginning of the

Characterized Heating Curve

replaces the MIX STRT water temperature and OUT STRT air temperature settings used by the

Reset Ratio

MIXING MINIMUM (MIX MIN)

(

CHARACTERIZED HEATING CURVE

UnOccupied

DIP switch is selected and

mode, using an

Setback/None

)

for the mixing zones. This single setting

)

DIP

Mixing Characterized

Heating Curve

MIX MIN

MIX IND

MIX ROOM Occ

MIX MAX

MIX DSGN

OUT DSGN

WWSD Occ

WWSD Unocc

MIX ROOM Unocc

The MIX MIN is the lowest temperature that the control is allowed to use as a MIX TRG temperature. During mild conditions, if the 363 calculates a MIX TRG temperature that is below the MIX MIN setting, the MIX TRG temperature is adjusted to match the MIX MIN setting. During this condition, the

Minimum

pointer turns on in the LCD when either the MIX TRG temperature

(27)

(16)

40 (5)

Outdoor Air Temperature

(-7)

(-18)

-20

(-29)

or the MIX SUP temperature is being viewed.

If either an Indoor Sensor or a Room Temperature Unit (RTU) are used and the 363 is operating at the MIX MIN temperature, the Mixing Pump (P2) is cycled using Pulse Width Modulation (PWM) with a 15 minute cycle length. By cycling the Mixing Pump (P2) and controlling the flow of supply water, the control provides an average supply water temperature to the mixing system. This average temperature is equal to the original MIX TRG. This minimizes overheating of the zone while the control is operating at the MIX MIN temperature.

210 (99)

190 (88)

170 (77)

150 (66)

130 (54)

110

(43)

(32)

(21)

(10)

Supply Water Temperature

Sequence, Section D

MIX ROOM OCC & UNOCC (MIX ROOM)

(

CHARACTERIZED HEATING CURVE

The MIX ROOM is the desired room temperature for the mixing zones and it provides a parallel shift of the

)

Characterized Heating Curve

The room temperature desired by the occupants is often different from the design indoor temperature (MIX INDR). If the room temperature is not correct, adjusting the MIX ROOM setting increases or decreases the amount of heat available to the building. If the

Setback / None

MIXING TARGET TEMPERATURE (MIX TRG) (

RESET RATIO

The MIX TRG temperature is determined from either the

DIP switch is set to

CHARACTERIZED HEATING CURVE

Setback

, a MIX ROOM setting must be made for both the

)

Characterized Heating Curve

or the

Occupied

Reset Ratio

and

UnOccupied

modes.

settings and the outdoor air temperature. The control displays the temperature that it is currently trying to maintain as the mixing supply temperature. If the control does not presently have a requirement for heat, it displays “- - -” in the LCD.

MIXING PUMP (P2) OPERATION

The Mixing Pump (P2) contact (terminal 11) closes whenever there is a the Mixing Pump is operated based on the EXERCISE setting in the

BOILER MINIMUM PROTECTION (Boil MIN)

Mixing Demand

Adjust

Menu .

and the 363 is not in WWSD. During WWSD,

The 363 is capable of providing boiler protection from cold mixing system return water temperatures. If the boiler supply temperature is cooler than the Boil MIN setting while the boiler is firing, the 363 reduces the output from the mixing device. This limits the amount of cool return water to the boiler and allows the boiler supply temperature to recover.

Section D2 —Mixing Device

MIXING DEVICE SELECTION (MIXING)

The 363 can supply a lower water temperature to part of the heating system by varying the speed of an injection pump or modulating a mixing valve. This selection is made under the MIXING item in the

Adjust Menu

13 of 40

Page 14

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

/ Var

terminals (15 and 16). The 363 pulses the actuator motor open or close

Opn

and

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

Cls

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

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 In addition, power must be applied to the 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

Demand

tekmar

363 Control

Mix Demand

View

Boiler Demand

DHW Demand Setpoint Demand

Minimum

Maximum

DHW

Item

Universal Reset Control 363

Mixing, Boiler & DHW

NRTL/C

LR 58223

LR 58233

E150539

Mix Demand

Com

and

10K 1

terminals (20 and 21).

terminals (1 and 2) as described in

tekmar

Indoor Sensor

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

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

tekmar

Zone Control

Power

Occupied

UnOccupied

Heat Required

Optimum Start / Stop

24 hr. Timer

System Pump

Timer Active

70°F (21°C)

12 hrs.

Zone 1 / Lo stage /

Open / Cooling

• Dial the desired duration

618

of the UnOccupied period.

Zone 2 / Hi stage /

• Press start button at the time of day

Close / Ventilation

you want the UnOcc. period to begin.

Zone 3 / Lo stage

Timer Active light turns on.

Open

100

Zone 4 / Hi stage

(4)

(38)

UnOccupied

Duration

Zone 5 / Lo stage

Start

Open

Zone 6 / Hi stage

Close 0 = always Occupied 24 = always UnOccupied

Zone Control 367

One & Two Stage / One Stage & Floating

LR 58233

E150539

tekmar

363 Control

View

DHW

Item

Universal Reset Control 363

Mixing, Boiler & DHW

Mix Demand Boiler Demand DHW Demand Setpoint Demand WWSD

Minimum Maximum

NRTL/C

LR 58223

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 must be applied to the

Mix Demand

Com

and the

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

10K 1

terminals (20 and 21). Power

tekmar

Slab Sensor

tekmar

363 Control

Mix Demand

View

Boiler Demand

DHW Demand Setpoint Demand

Minimum

Maximum

DHW

Item

Universal Reset Control 363

Mixing, Boiler & DHW

NRTL/C

LR 58223

LR 58233

E150539

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.

14 of 40

Page 15

ROOM TEMPERATURE UNIT (RTU) 062, 063

If the mixing system consists of a single zone, temperature control of that zone can be provided

Com

by using an RTU. The RTU is connected to the

and tekmar NetTM

and 19). In addition, power must be applied to the

Mix Demand

tN1/tN2

terminals (17

terminals (1 and 2) as described in Section D1. With the RTU connected, the 363 measures the actual room temperature. With this information, the 363 provides a constant water flow through the mixing system. At the same time, indoor temperature feedback fine tunes the supply water temperature in the mixing system to prevent over heating or under heating. The RTU allows the user to adjust the desired room temperature at the RTU. Remote sensor capability is also available through an RTU as described in the RTU data brochure.

Section E —Storage

tekmar

RTU

View

tekmar

363 Control

Mix Demand

View

Boiler Demand

DHW Demand Setpoint Demand

Minimum

Maximum

UnOcc 1

Heat

ItemMenu

Universal Reset Control 363

Mixing, Boiler & DHW

DHW

Item

NRTL/C

LR 58223

LR 58233

E150539

Section E1

General Storage

Operation

Section E2

With a Tank Sensor

Section E3

Without a Tank

Sensor

Section E1 —General Storage Operation

MIXING STORAGE (MIXING = STOR)

By using the 363, it is possible to incorporate a thermal storage tank into the mixed side of the heating system. This storage tank could be charged with heat using an alternate heat source such as solar, wood, or off peak electrical.

Set the MIXING item to STOR. When using the STOR selection, it is not

possible to use a floating action actuator as the mixing device; Variable speed injection pumps must be used. A variable speed injection pump is used to draw heat from the storage tank and inject it into the mixed system loop. Pipe the storage tank and boiler loop variable speed driven mixing pump as illustrated. Whenever possible, the 363 uses the heat in the storage tank to satisfy the mixing system. However, if the storage tank is not able to satisfy the mixing system, the 363 uses the variable speed injection pump connected to the boiler loop. This pump provides heat to the mixing system from the boiler.

Note: A relay must be installed as described in the wiring section for the 363 to switch the variable speed output signal between the storage tank injection pump and the boiler loop injection pump.

Var

Secondary

Heat Source

Section E2 —With a Tank Sensor

10K 2 STORAGE (10K 2 = STOR)

For the best operation of a system that has a thermal storage tank, it is recommended to use a tekmar 10K sensor in the storage tank. The sensor measures the tank temperature and connects to the 363 on the

10K 2

terminals (17 and 18). Set the 10K 2 setting to the STOR item. With

the sensor installed, the 363 learns the required temperature difference between the current tank temperature and the mixing target temperature that still allows heat transfer.

If the tank temperature is sufficient to satisfy the system, the 363 operates the storage tank’s variable speed pump. If the tank temperature is not sufficient, the 363 switches to the boiler variable speed pump. Whenever the 363 is using the boiler variable speed pump, the 363 continues to monitor the tank temperature. If the tank temperature increases enough to satisfy the mixing requirements, the 363 switches back to the storage tank’s variable speed pump for as long as possible.

Use of the tank sensor allows the control to display the current storage tank

View

temperature in the tank temperatures.

menu and record the highest and lowest

Com

15 of 40

and

Mix Sensor

Var

Secondary Heat Source

Var

Tank Sensor

Boiler Sensor

Page 16

Section E3 —Without a Tank Sensor

The 363 is capable of operating the storage tank system without a storage tank sensor. In this situation, once the 363 receives a control begins operation by trying to satisfy the system using the storage tank. If the storage tank’s injection pump runs at a high percentage of output and is still unable to satisfy the system, the 363 switches to the boiler’s variable speed injection pump.

Mixing Demand

the

Mix Sensor

Secondary

Heat Source

Boiler Sensor

POLLING TIME (POLL TIME)

Once the 363 has switched to the boiler’s variable speed injection pump, it must periodically check to see if the storage tank has accumulated a usable amount of heat. This periodic checking is called polling. The polling period is an adjustable setting between 20 minutes and 12 hours. At the end of every polling period, the 363 switches to the storage tank’s variable speed pump. As long as the storage tank is capable of satisfying the system, the 363 operates the storage tank’s variable speed pump. If the storage tank is not capable of satisfying the system, the 363 switches back to the boiler’s variable speed pump. The control checks the storage tank at the end of the next polling time.

Installation

CAUTION

Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed into the control circuit.

STEP ONE

Check the contents of this package. If any of the contents listed are missing or damaged, please contact your wholesaler or tekmar sales representative for assistance.

Type 363 includes:

GETTING READY

One Universal Reset Control 363, One Outdoor Sensor 070, Two Universal Sensors 071 Data Brochures D 363, D 070, D 001, User Brochure U 363, Application Brochures A 363 Essays E 003, E 021

Note:

Carefully read the details of the Sequence of Operation to ensure that you have chosen the proper control for your application.

STEP TWO

Remove the control from its base by pressing down on the release clip in the wiring chamber and sliding the control upwards. The base is then mounted in accordance with the instructions in the Data Brochure D 001.

STEP THREE

All electrical wiring terminates in the control base wiring chamber. The base has standard 7/8” (22 mm) knockouts which accept common wiring hardware and conduit fittings. Before removing the knockouts, check the wiring diagram and select those sections of the chamber with common voltages. Do not allow the wiring to cross between sections as the wires interfere with safety dividers which should be installed at a later time.

Power must not be applied to any of the wires during the rough-in wiring stage.

• Install the Outdoor Sensor 070, Boiler Sensor 071, and Mixing Sensor 071 according to the instructions in the Data Brochure D 070

• If a DHW Sensor 071 is used, install the DHW Sensor according to the installation instructions in the Data Brochure D 070 and run

• If a Storage Tank Sensor 071 is used, install the Storage Tank Sensor according to the installation instructions in the Data Brochure

• If a Room Temperature Unit (RTU) 062 or 063 is used, install the RTU according to the installation instructions in the Data Brochure

• If a Slab Sensor 072 or 073 is used, install the Slab Sensor according to the installation instructions in the Data Brochure D 070

• If a Remote Display Module (RDM) 040 is used, install the RDM according to the installation instructions in the Data Brochure D

and run the wiring back to the control.

the wiring back to the control.

D 070 and run the wiring back to the control.

D 062 and run the wiring back to the control.

and run the wiring back to the control.

040 and run the wiring back to the control.

MOUNTING THE BASE

ROUGH-IN WIRING

16 of 40

Page 17

• If a tekmar Zone Control is used, run the wires from the Zone Control to the 363. Refer to the instructions supplied with the Zone Control.

• Run wire from other system components (pumps, boiler, actuator motors, etc.) to the control.

• Run wires from the 120 V (ac) power to the control. Use a clean power source to ensure proper operation. Multi-strand 16 AWG wire is recommended for all 120 V (ac) wiring due to its superior ﬂexibility and ease of installation into the terminals.

• 120 V (ac) to be provided from a 15 A circuit breaker and must have a circuit disconnect installed.

• Connect ground wires to ground bus bar in wiring area.

STEP FOUR ELECTRICAL CONNECTIONS TO THE CONTROL

The installer should test to conﬁrm that no voltage is present at any of the wires. Push the control into the base and slide it down until it snaps ﬁrmly into place.

Powered Input Connections

Power

120 V (ac) Power

Connect the 120 V (ac) power supply to the

Power N

This connection provides power to the microprocessor and display of the control. As well, this connection provides power to the

Power L

terminal (7).

Boil P1

and

Power L

terminals (8 and 11) from the

Mix P2

terminals (6 and 7).

Mixing Demand

To generate a

Mixing Demand

applied across the

Mix Demand

, a voltage between 24 V (ac) and 240 V (ac) must be

terminals (1 and 2).

Boiler Demand

To generate a across the

Boil Dem

Boiler Demand

and the

, a voltage between 24 V (ac) and 240 V (ac) must be applied

Com Dem

terminals (4 and 3).

DHW Demand

To generate an external DHW Demand, a voltage between 24 V (ac) and 240 V (ac) must be applied across the

Setp / DHW

and the

Com Dem

terminals (5 and 3).

Setpoint Demand

To generate a Setpoint Demand, a voltage between 24 V (ac) and 240 V (ac) must be applied across the

Setp / DHW

and the

Com Dem

terminals (5 and 3). Caution: The same power supply must be used for both the DHW demand and setpoint demand circuits since they share the

Com Dem

terminals.

Output Connections

Boiler Pump Contact (Boil P1)

The boiler pump output terminal (8) on the 363 is a powered output. When the relay contact in the 363 closes, 120 V (ac) line (L) is provided to the the

Power L

terminal (7). To operate the boiler pump, connect one side of the boiler pump

terminal (8) from

Boil P1

circuit to terminal 8 and the second side of the pump circuit to the neutral (N) side of the 120 V (ac) power supply.

DHW Pump / Valve Contact

The

DHW Pump / Valve

no power available on these terminals from the control. These terminals are to be used as a switch to either make or break power to the DHW pump or the DHW valve. Since this is an isolated contact, it may switch a voltage between 24 V (ac) and 240 V (ac).

terminals (9 and 10) are an isolated output in the 363. There is

120 V (ac)

24 to 240 V (ac)

120 V (ac)

24 to 240 V (ac)

Com

Dem

Demand

Com

Dem

Boil

Dem

Power

Pmp/Vlv

Mix

Boil

Dem

Setp/

DHW

Boil P1

Mixing Pump Contact (Mix P2)

The mixing pump output terminal (11) on the 363 is a powered output. When the relay contact in the 363 closes, 120 V (ac) line (L) is provided to the the

Power L

terminal (7). To operate the mixing pump, connect one side of the mixing

terminal (11) from

Mix P2

pump circuit to terminal 11 and the second side of the pump circuit to the neutral (N) side of the 120 V (ac) power supply.

Boiler Contact

The Boiler terminals (12 and 13) are an isolated output in the 363. There is no power available on these terminals from the control. These terminals are to be used as a switch to either make or break the boiler circuit. When the 363 requires the boiler to ﬁre, it closes the contact between terminals 12 and 13.

17 of 40

120 V (ac)

Power

DHW

Boil

Pmp/Vlv

Boiler

Mix P2

Page 18

Variable Speed Injection Pump

Com

Mix

Boil

Out

Pwr

Mix

Opn

Cls/

Var

The 363 can vary the speed of a permanent capacitor, impedance protected or equivalent pump motor that has a locked rotor current of less than 2.4 A. Most small wet rotor circulators are suitable as described in Essay E 021. The 363 has an internal overload protection fuse which is rated at 2.5 A 250 V (ac). Contact your tekmar sales representative for details on the repair procedure if this fuse is blown.

Connect one of the wires from the variable speed injection pump to the

Cls / Var

terminal (16) on the 363. Connect the

Pwr Mix

terminal (14) to the live (L) side of the 120 V (ac) power source. The other wire on the variable speed injection pump must be connected to the neutral (N) side of the 120 V (ac) power supply.

Variable Speed Injection Pump (STORAGE)

If using the STORAGE function in the control, the variable speed signal from the control must be wired through an external relay. This relay must have a 120 V (ac) coil and at least one normally open and one normally closed contact (e.g. tekmar relay 004). The relay’s coil is to be connected between the

Opn

terminal (15) on the 363 and the 120 V (ac)

neutral (N). The common pole of the relay is to be connected to the

/ Var

terminal (16) on the 363. The storage tank’s injection pump is to

be connected between the normally open contact and the 120 V (ac)

Cls

120 V (ac)

neutral (N). The boiler’s injection pump is to be connected between the normally closed contact and the 120 V (ac) neutral (N). An example of the correct wiring using a 120 V (ac) double pole, double throw (DPDT) relay is shown to the right.

Mixing Valve Actuator

Connect one side of the 24 V (ac) power to the on the control. The output relay

Opn

terminal (15) is then connected to the open terminal of the actuating motor and the output relay terminal (16) is connected to the close terminal of the actuating motor. Connect the second side of the 24 V (ac) power to the common terminal of the actuating motor.

Pwr Mix

terminal (14)

Cls / Var

Pwr Mix

120 V (ac)

Opn

Cls /

Var

Com

Pwr Mix

Cls/

Opn

Var

Sensor and Unpowered Input Connections

Do not apply power to these terminals as this damages the control.

Outdoor Sensor

Connect the two wires from the Outdoor Sensor 070 to the

Out

terminals (23 and 26). The Outdoor Sensor is used by the 363 to

measure the outdoor air temperature.

Com

Boiler Sensor

Connect the two wires from the Boiler Sensor 071 to the terminals (23 and 25). The Boiler Sensor is used by the 363 to measure the supply (outlet) water temperature from the boiler.

Com

and

Mixing Sensor

Connect the two wires from the Mixing Sensor 071 to the terminals (23 and 24). The Mixing Sensor is used by the 363 to measure the supply water temperature after the mixing device. Normally the sensor is attached to the pipe downstream of the mixing pump (P2).

10K 1 Sensor

Either an Indoor Sensor, Slab Sensor, or Zone Control may be connected to the from the sensor to the

10K 1

input. If a sensor is used, connect the two wires

Com

and

10K 1

terminals (20 and 21).

Com

18 of 40

and

Boil

Mix

Com

Mix

Boil

Out

Mix

Boiler sensor

Mixing sensor

Com

10K

Page 19

Zone Control Input

If an external tekmar Zone Control is used, connect the wire from the

Com Sen

363. Connect the terminal (21) on the 363.

Note: The wires from the Zone Control are polarity sensitive. The communication does not operate correctly if the wires are reversed.

terminal on the Zone Control to the

Zo Out

terminal on the Zone Control to the

Com

terminal (20) on the

10K 1

tekmar 363

10K

Com

Zone Control

Com

Sen

Out

tekmar NetTM Device (tN1 / tN2)

A Room Temperature Unit (RTU) 062 or 063, or a Remote Display Module (RDM) 040 may be connected to the input. Connect the

Com

terminal (17) on the 363. Connect the tN1 or tN2 terminal from the

appropriate device to the

Com

terminal from the appropriate device to the

tN1 / tN2

terminal (19) on the 363.

tekmar NetTM (tN1 / tN2)

View

UnOcc1

Heat

ItemMenu

Com

tN1/

10K

tN2

Note: The wires from the RTU and the RDM are polarity sensitive. The tN1 / tN2 device does not operate correctly if the wires are reversed.

10K

10K 2 Sensor

Com

Either a DHW Sensor 071 or a Storage Tank Sensor 071 can connect to the

10K 2

input. Connect the two wires from the appropriate sensor

Com

and

10K 2

to the

terminals (17 and 18).

UnOccupied Switch

If an external timer (tekmar Timer 032) or switch is used, connect the two wires from the external switch to the

Com

and

UnO Sw

terminals (20 and 22). When these two terminals are shorted together, the control registers an UnOccupied signal.

Note: The setback override in the schedule menu of the control overrides any external signal that is present on the UnOccupied Switch terminals.

STEP FIVE

Each terminal block

TESTING THE WIRING

must be unplugged

from its header on the control before power is applied for testing. To remove the terminal block,

Timer Switch

pull straight down from the control.

The following tests are to be performed using standard testing practices and procedures and should only be carried out by properly trained and experienced persons.

A good quality electrical test meter, capable of reading from at least 0 - 300 V (ac) and at least 0 - 2,000,000 Ohms, is essential to properly test the wiring and sensors.

Test the Sensors

Ω

In order to test the sensors, the actual temperature at each sensor location must be measured. A good quality digital thermometer with a surface temperature probe is recommended for ease of use and accuracy. Where a digital thermometer is not available, a spare sensor can be strapped alongside the one to be tested and the readings compared. Test the sensors according to the instructions in the Data Brochure D 070.

Test the Power Supply

Ω

Make sure exposed wires and bare terminals are not in contact with other wires or grounded surfaces. Turn on the power and measure the voltage between the N and L terminals (6 and 7) using an AC voltmeter, the reading should be between 108 and 132 V (ac).

Com

Power

UnO

10K

Out

Boil

Mix

108 to 132 V (ac)

Test the Powered Inputs

Mixing Demand

If a mixing demand is used, measure the voltage between the

Demand

heat, you should measure between 20 and 260 V (ac) at the terminals. When the mixing demand device is off, you should measure less than 5 V (ac).

terminals (1 and 2). When the mixing demand device calls for

19 of 40

Mix

Ω

Demand

20 to 260 V (ac)

Page 20

Boiler Demand

If a

Boiler Demand

and the

Com Dem

is used, measure the voltage between the

terminals (4 and 3). When the

Boiler Demand

Boil Dem

device calls for heat, you should measure between 20 and 260 V (ac) at the terminals. When the

Boiler Demand

device is off, you should measure

less than 5 V (ac).

DHW Demand

If a

DHW Demand

DHW

and the

is used, measure the voltage between the

Com Dem

terminals (5 and 3). When the

Setp /

DHW Demand

device calls for heat, you should measure between 20 and 260 V (ac) at the terminals. When the

DHW Demand

device is off, you should

measure less than 5 V (ac).

Setpoint Demand

If a

Setpoint Demand

DHW

and the

Demand

device calls for heat, you should measure between 20 and

260 V (ac) at the terminals. When the

is used, measure the voltage between the

Com Dem

terminals (5 and 3). When the

Setpoint Demand

Setp /

Setpoint

device is off,

you should measure less than 5 V (ac).

Testing the Outputs

Boiler Pump (Boil P1)

If a boiler pump is connected to the terminal block is off and install a jumper between the (7 and 8). When power is applied to the boiler pump should start. If the pump does not turn on, check the wiring between the terminal block and pump and refer to any installation or troubleshooting information supplied with the pump. If the pump operates properly, disconnect the power and remove the jumper.

Boil P1

terminal (8), make sure that power to the

Power N

Power L

and

Power L

and the

Boil P1

terminals (6 and 7), the

DHW Pump OR Valve (DHW Pmp/Vlv)

If a DHW pump or DHW valve is connected to the make sure the power to the pump or valve circuit is off and install a jumper between those terminals. When the DHW circuit is powered up, the DHW pump should turn on or the DHW valve should open completely. If the DHW pump or valve fails to operate, check the wiring between the terminals and the pump or valve and refer to any installation or troubleshooting information supplied with these devices. If the DHW pump or valve operate correctly, disconnect the power and remove the jumper.

DHW Pmp / Vlv

terminals (9 and 10),

Ω

terminals

Com

Dem

120 V (ac)

24 to 240 V (ac)

Com

Dem

Boil

Dem

Boil

Dem

Setp/

DHW

20 to 260 V (ac)

Boil

Power

DHW

Pmp/Vlv

Mixing Pump (Mix P2)

If a mixing pump is connected to the terminal block is off and install a jumper between the (7 and 11). When power is applied to the mixing pump should start. If the pump does not turn on, check the wiring between the terminal block and pump and refer to any installation or troubleshooting information supplied with the pump. If the pump operates properly, disconnect the power and remove

Mix P2

terminal (11), make sure that power to the

Power N

Power L

and

Power L

and the

Mix P2

terminals (6 and 7), the

terminals

Mix

the jumper.

120 V (ac)

Boiler

If the boiler is connected to the the terminals. When the boiler circuit is powered up, the boiler should fire. If the boiler does not turn on, refer to any installation or troubleshooting information supplied with the boiler. (The boiler may have a flow switch that prevents firing until the boiler pump (P1) is running.) If the boiler operates properly, disconnect the power and remove the jumper.

Boiler

terminals (12 and 13), make sure power to the boiler circuit is off and install a jumper between

Variable Speed Injection Pump

If a variable speed injection pump circuit is connected to the the terminal block is off and install a jumper between the pump circuit is powered up, the variable speed pump should operate at full speed. If the pump does not operate, check the wiring between the terminal block and the pump and refer to any installation or troubleshooting information supplied with the pump. If the pump operates properly, disconnect the power and remove the jumper.

Pwr Mix

20 of 40

and

Cls / Var

terminals (14 and 16), make sure the power to

terminals (14 and 16). When the variable speed

Page 21

Variable Speed Injection Pump (Storage)

If the storage feature is used in the control, the two variable speed injection pumps must be wired as shown in the wiring section. To test that the wiring is done correctly, make sure the power to the terminal block is off. Install a jumper between the

Cls / Var

terminals (14 and 16). When the variable speed pump circuit is powered up, the boiler’s variable speed pump should operate at full speed. If the pump does not operate, check the wiring between the terminal block and the pump. Refer to any installation or troubleshooting information supplied with the pump. If the pump operates properly, disconnect the power.

Pwr Mix

and

With the first jumper still in place, insert a second jumper between the

Pwr Mix

and

Opn

terminals (14 and 15). When the variable speed pump circuit is powered up, the switching relay should energize and the storage tank’s variable speed pump should operate at full speed. If the relay does not energize, check the wiring between the terminal block and the relay. If the storage tank’s injection pump does not operate, check the wiring between the terminal block and the pump. Refer to any installation or troubleshooting information supplied with the pump. If the pump and relay operate properly, disconnect the power and remove both jumpers.

Mixing Valve Actuator

If a floating action actuating motor circuit is connected to the power to the motor circuit is off and install a jumper between the up, the actuator should move in the opening direction. If it does not, check the wiring between the terminals and the actuating motor. Refer to any installation or troubleshooting information supplied with the motor. If the motor closes instead of opening, the wiring of the actuating motor must be reversed. If the valve opens correctly, turn off the power to the circuit and remove the jumper. Install a jumper between the

Pwr Mix

and

Cls / Var

terminals (14 and 16). When the circuit is powered up, the valve should move in the closing direction. If it does not, check the wiring between the terminals and the actuating motor. Refer to any installation or troubleshooting information supplied with the motor. If the motor closes correctly, turn off the power to the circuit and remove the jumper.

Connecting the Control

Make sure all power to the devices and terminal blocks is off and remove any remaining jumpers from the terminals.

Reconnect the terminal blocks to the control by carefully aligning them with their respective headers on the control and, then, pushing the terminal blocks into the headers. The terminal blocks should snap firmly into place.

Install the supplied safety dividers between the unpowered sensor inputs and the powered 120 V (ac) or 24 V (ac) wiring chambers.

Apply power to the control. The operation of the control on power up is described in the Sequence of Operation section of this brochure.

Pwr Mix, Opn

Pwr Mix

and

, and

Cls / Var

Opn

terminals (14 and 15). When the circuit is powered

terminals (14, 15, and 16), make sure

6 Power

Boil P1

DHW

Pmp/Vlv

Mix P2

21 of 40

Page 22

DIP Switch Settings

The DIP Switch settings on the control are very important and should be set to the appropriate settings prior to making any adjustments to the control through the User Interface. The DIP switch settings change the items that are available to be viewed and / or adjusted in the User Interface.

If a DIP switch is changed while the control is powered up, the control responds to the change in setting by returning the display to the View menu. This is true for all of the DIP switches except for the Lock / Unlock DIP switch.

Setback

None

Reset Ratio

Characterized Heating Curve

LOCK / UNLOCK (FACTORY SETTING IS UNLOCK)

The

Lock / Unlock

DIP switch is used to lock and unlock the access level of the control and tekmar NetTM tN1 / tN2 device. Once locked, access levels cannot be changed. To determine if the control is currently locked or unlocked, a small segment representing a padlock is viewed in the bottom right hand corner of the display. When the padlock is closed, the access level cannot be changed.

To change the access level, set the DIP switch to the

Unlocked

, or

down

position. The current access level of the control or tekmar Net (tN1 / tN2) device is viewed in its Miscellaneous (Misc) menu. While viewing the access level, use the up and down keys to select between the Limited (LTD), User (USER), Installer (INST), or Advanced (ADV) access levels.

To lock the access level, select the appropriate access level in the Miscellaneous (Misc) menu and move the DIP switch from the

unlocked

position to the

locked

position. As long as the DIP switch is in the locked position, the access level of the control or tekmar

NetTM (tN1 / tN2) device can no longer be viewed or adjusted in its Miscellaneous (Misc) menu.

SETBACK / NONE (FACTORY SETTING IS NONE)

The

Setback / None

DIP switch enables and disables the setback functions of the control. When the DIP switch is set to the

down position, the control ignores any external setback signal, and its user interface does not display the

When the DIP switch is set to the setback signal generated on the

Setback UnO Sw

HEATING CURVE / RESET RATIO (FACTORY SETTING IS CHARACTERIZED HEATING CURVE)

The

Characterized Heating Curve / Reset Ratio

switch is set to the

Characterized Heating Curve

None

UnOccupied

adjustments.

position, the setback features in the control are enabled. The control responds to an external

terminal.

DIP switch determines the type of Outdoor Reset that the control uses. When the DIP

setting, the control uses an Outdoor Reset method that matches the heating characteristics of the type of terminal unit that is being used. See Sequence Of Operation, Section A for a description of terminal units. When this setting is used, a desired indoor air setting, design outdoor setting and a design supply setting must be entered into the control.

When the DIP switch is set to the

Reset Ratio

setting, the control uses an Outdoor Reset method that varies the supply setting based

only on the outdoor air temperature. When this setting is used, the starting water setting and OUT STRT temperature determines the beginning point of the reset ratio. The design supply setting and the design outdoor setting determines the ending point of the reset ratio. All temperatures between these two points fall on a straight line connecting these points.

Important: Once the control is programmed, this DIP switch should not be adjusted as the settings may change.

Access Levels

The tekmar Universal Reset Control 363 comes with four Access Level settings. These Access Levels restrict the number of Menus, Items, and Adjustments that can be accessed by the user. The four access levels are Limited (LTD), User (USER), Installer (INST) and Advanced (ADV).

The access level of the control is found in the Miscellaneous ( when the

Lock/Unlock

DIP switch is set to the

Unlocked

Advanced access level, all of the control settings are available to the user. In the User access level, only a few of the menus and items are available. The Limited access level is the most restricted of them all. The control’s factory setting is Installer (

INST

). This access level is sufficient for the normal set up of the control. Once the control is set up, the appropriate access level should be selected for the people that deal with the control on a regular basis.

Misc

) menu

position. In the

22 of 40

Misc

Page 23

363 View Menu (1 of 1)

Item Field

Access Level

Description

Range

LTD

Section

• • • •

INST

USER

• • •

•

• •

ADV

Current outdoor air temperature as measured by the outdoor sensor. This is the default display for the control.

Target room air temperature. “– – –” denotes no heat is required.

10K 1 = INDR

Measured room air temperature at the indoor sensor.

10K 1 = INDR

This is the signal that is being received from a tekmar Zone Control that is operating mixing zones.

10K 1 = MIX

This is the signal that is being received from a tekmar Zone Control that is operating the boiler zones.

10K 1 = Boil

Current slab sensor temperature.

10K 1 = SLAB MIX MIN = OFF

Target mixed supply is the temperature the control is currently trying to maintain at the mixing sensor.

-67 to 149˚F (-55 to 65˚C)

- - -, 35 to 100˚F (2 to 38˚C)

-58 to 167˚F (-50 to 75˚C)

- - -, 35 to 110˚F (2 to 43˚C)

-58 to 167˚F (-50 to 75˚C)

- - -, 35 to 248˚F (2 to 120˚C)

• • • •

• • •

• •

• • •

• •

• • •

• •

Current mixed supply water temperature as measured by the mixing sensor.

Target boiler supply is the temperature the control is currently trying to maintain at the boiler sensor +/- 1/2 of the differential.

Current boiler supply water temperature as measured by the boiler sensor.

Current storage tank temperature as measured by the storage tank sensor.

10K 2 = STOR

Minimum boiler supply temperature during a DHW demand.

10K 2 ≠ DHW DHW THRU ≠ NONE

Target DHW tank temperature.

10K 2 = DHW DHW THRU ≠ NONE

Current DHW tank temperature.

10K 2 = DHW DHW THRU ≠ NONE

Minimum boiler supply temperature during a setpoint demand.

10K 2 = DHW, DHW THRU = NONE

-31 to 266˚F (-35 to 130˚C)

- - -, 35 to 248˚F (2 to 120˚C)

-31 to 266˚F (-35 to 130˚C)

- - -, OFF, 100 to 220˚F (OFF, 38 to 104˚C)

- - -, OFF, 70 to 190˚F (OFF, 21 to 88˚C)

-31 to 266˚F (-35 to 130˚C)

- - -, OFF, 70 to 220˚F (OFF, 21 to 104˚C)

23 of 40

Page 24

363 Adjust Menu (1 of 5)

LTD

Section

USER

Occ

UnOcc

• • • •

• • •

INST

• •

Access Level

DescriptionItem Field

ADV

The desired room air temperature during an Occupied period for mixing zone(s). is only a ±3°F adjustment in the LTD access level.

DIP switch = No RTU connected

The desired room air temperature during an UnOccupied period for mixing zone(s).

DIP switch = DIP switch = No RTU connected

The device that is to be connected to the 10K 1 input when an RTU is not connected.

DIP switch = No RTU connected

Characterized Heating Curve

Setback

Characterized Heating Curve

Note:

There

Range

35 to 100˚F (2 to 38˚C)

Default = 70°F (21°C)

35 to 100˚F (2 to 38˚C)

Default = 65°F (18°C)

NONE, INDR (Indoor), MIX (Mixing zone

control), Boil (Boiler zone control), SLAB

Default = NONE

Actual

Setting

• •

• • •

• •

• • •

The device that is to be connected to the 10K 1 input when an RTU is connected.

DIP switch = RTU is connected

The minimum temperature at the slab sensor

DIP switch = No RTU connected

10K 1 = SLAB

The maximum temperature at the slab sensor.

DIP switch = No RTU connected

10K 1 = SLAB

maximum length of morning boost.

The

DIP switch = DIP switch = No RTU connected

10K 1 ≠ MIX

The amount the mixing supply water temperature will be reduced when the control is in the UnOccupied mode.

DIP switch = DIP switch =

Characterized Heating Curve

Setback

Reset Ratio Setback

NONE, Boil (Boiler zone control)

Default = NONE

OFF, 35 to 120˚F (OFF, 2 to 49˚C)

Default = 70°F (21°C)

40 to 150˚F (4 to 66˚C)

Default = 90°F (32°C)

OFF, 0:20 to 8:00 Hr.

Default = OFF

0 to 50˚F (0 to 28˚C)

Default = 9°F (5°C)

• •

•

The type of terminal units that are being used for the mixing side of the system.

DIP switch =

The minimum supply water temperature for the mixing system.

DIP switch =

Characterized Heating Curve

24 of 40

HRF1 (Heavy), HRF2 (Light), (Fan-) COIL, CONV (ector), RAD (iator), BASE (board)

Default = HRF1

OFF, 35 to 150˚F (OFF, 2 to 66˚C)

Default = OFF

Page 25

363 Adjust Menu (2 of 5)

LTD

Section

USER

INST

• •

Access Level

DescriptionItem Field

ADV

The design indoor air temperature used in the heat loss calculation for the mixing system.

DIP switch =

Characterized Heating Curve

Range

35 to 100˚F (2 to 38˚C)

Default =70°F (21°C)

Actual

Setting

• •

The starting water temperature used in the reset ratio calculation for the mixed supply.

DIP switch =

The outdoor starting temperature used in the reset ratio calculation for the heating system.

DIP switch =

The design supply temperature used in the heat loss calculation for the mixing system.

The design outdoor air temperature used in the heat loss calculation for the heating system.

The maximum supply target temperature for the mixing system.

Reset Ratio

35 to 150˚F (2 to 66˚C)

Default = 70°F (21°C)

35 to 85˚F (2 to 29˚C)

Default =70°F (21°C)

70 to 220˚F (21 to 104˚C)

Default = 120°F (49°C)

-60 to 32˚F (-51 to 0˚C)

Default = 10°F (-12°C)

80 to 210˚F, OFF (27 to 99˚C, OFF)

Default = 140°F (60°C)

• •

The type of mixing device that is to be used in the heating system.

The time that the actuating motor requires to operate from fully closed to fully open.

MIXING = FLOT

The device that is to be connected to the 10K 2 input terminal.

The polling time that is to be used for a storage tank.

MIXING = STOR 10K 2 ≠ STOR

25 of 40

FLOT (Floating), VAR (Variable speed), STOR (Storage)

Default = VAR

30 to 230 sec

Default = 160 sec

NONE, DHW, STOR

(Storage tank)

Default =

0:20 to 12:00 hr

Default = 1:00 hr

NONE

Page 26

363 Adjust Menu (3 of 5)

Access Level

DescriptionItem Field

Range

Occ

UnOcc

LTD

Section

• • • •

INST

USER

• • •

• •

• • •

• •

ADV

The desired room air temperature during an Occupied period for the boiler zone(s). is only a ±3°F adjustment in the LTD access level.

DIP switch =

The desired room air temperature during an UnOccupied period for boiler zone(s).

DIP switch = DIP switch =

The maximum length of morning boost.

DIP switch = DIP switch =

10K 1 ≠ Boil

The amount that the boiler supply temperature will be reduced when the control is in an UnOccupied mode.

DIP switch = DIP switch =

The type of terminal units that are being used for the boiler side of the system.

DIP switch =

Characterized Heating Curve

Setback

Characterized Heating Curve

Setback

Reset Ratio Setback

Characterized Heating Curve

Note:

There

35 to 100˚F (2 to 38˚C)

Default = 70°F (21°C)

35 to 100˚F (2 to 38˚C)

Default = 65°F (18°C)

OFF, 0:20 to 8:00 Hr.

Default = OFF

0 to 50˚F (0 to 28˚C)

Default = 15°F (8°C)

HRF1 (Heavy), HRF2 (Light), (Fan-) COIL, CONV (ector), RAD

(iator), BASE (board)

Default = CONV

• •

•

• •

The design indoor air temperature used in the heat loss calculation for the boiler system.

DIP switch =

The starting water temperature used in the reset ratio calculation for the boiler supply.

DIP switch =

The design supply temperature used in the heat loss calculation for the boiler system.

The maximum temperature allowed for the boiler target temperature.

The minimum temperature allowed for the boiler target temperature.

Characterized Heating Curve

Reset Ratio

35 to 100˚F (2 to 38˚C)

Default = 70°F (21°C)

35 to 150˚F (2 to 66˚C)

Default = 70°F (21°C)

70 to 220˚F (21 to 104˚C)

Default = 190°F (88°C)

120 to 225˚F, OFF (49 to 107˚C, OFF)

Default = 210°F (99°C)

OFF, 80 to 180˚F (OFF, 27 to 82˚C)

Default = 140°F (60°C)

26 of 40

Page 27

363 Adjust Menu (4 of 5)

LTD

Section

USER

INST

• •

Access Level

DescriptionItem Field

ADV

The time delay the control can expect between the time the boiler contact closes and the burner fires.

Range

0:00 to 3:00 min (1 sec. increments)

Default = 0:10 min

Actual

Setting

Occ

UnOcc

• •

• • •

The thermal mass characteristics of the boiler that is being used.

The differential that the control is to use when it is operating the boiler.

The device that is being used to supply flow to the heat exchanger in the DHW storage tank.

No Indirect DHW tank = NONE

The DHW storage tank’s temperature during the Occupied period.

10K 2 = DHW DHW THRU ≠ NONE

The DHW storage tank’s temperature during the UnOccupied period.

DIP switch =

10K 2 = DHW DHW THRU ≠ NONE

Setback

LITE, MED, HEVY

Default = MED

AUTO, 2 to 42˚F (1 to 23˚C)

Default = AUTO

NONE, PUMP, VALV

Default = PUMP

OFF, 70 to 190˚F (OFF, 21 to 88˚C)

Default = 140°F (60°C)

OFF, 70 to 190˚F (OFF, 21 to 88˚C)

Default = 120°F (49°C)

Occ

UnOcc

Occ

• •

The minimum boiler supply temperature to the DHW storage tank during the Occupied period.

10K 2 ≠ DHW DHW THRU ≠ NONE

Selects whether or not DHW will be generated during the UnOccupied period.

DIP switch =

10K 2 ≠ DHW DHW THRU ≠ NONE

The portions of the heating system that the DHW will have priority over.

DHW THRU ≠ NONE

The minimum boiler supply temperature when a setpoint demand is present during the Occupied period.

10K 2 = DHW, DHW THRU = NONE

Setback

27 of 40

OFF, 100 to 220˚F (OFF, 38 to 104˚C)

Default = 180°F (83°C)

OFF, DHW XCHG

Default = OFF

NONE, MIX, B+M

(Boiler+Mixing)

Default = NONE

OFF, 70 to 220˚F (OFF, 21 to 104˚C)

Default = 180°F (82°C)

Occ

Page 28

363 Adjust Menu (5 of 5)

LTD

Section

UnOcc

USER

INST

• •

Access Level

DescriptionItem Field

ADV

Selects whether or not a setpoint demand will be responded to during the UnOccupied period.

DIP switch =

10K 2 = DHW, DHW THRU = NONE

Setback

Range

OFF, SETPOINT Occ

Default = OFF

Actual

Setting

Occ

UnOcc

• •

• • •

•

Selects whether or not the setpoint demand will have priority over the heating system.

10K 2 = DHW, DHW THRU = NONE

The system’s warm weather shut down during the Occupied period.

The system’s warm weather shut down during the UnOccupied period.

DIP switch =

The maximum length of time that the boiler pump will continue to run after the boiler demands have been removed.

The portions of the heating system that will use the Soft Start feature.

Setback

NONE, B+M (Boiler + Mixing)

Default = NONE

35 to 100˚F, OFF (2 to 38˚C, OFF)

Default = 70°F (21°C )

35 to 100˚F, OFF (2 to 38˚C, OFF)

Default = 60 °F (16°C)

OFF, 0:10 to 40:00 min

Default = 0:20 min

NONE, MIX, B+M (Boiler + Mixing)

Default = NONE

The frequency with which the control will exercise

the pumps and valves that are operated by

•

the control.

363 Monitor Menu (see pages 33 - 35)

363 Schd (Schedule) Menu (1 of 1)

Access Level

ADV

INST

USER

LTD

Section

The type of setback override that is in effect.

• • • •

DIP switch =

AWAY is available even if DIP ≠ Setback

DescriptionItem Field

Setback

28 of 40

30 to 240 hr, OFF

Default = 70 hr

Range

NONE, TMPY Occ Ovr, PERM Occ Ovr, TMPYUnOcc Ovr, PERM UnOcc Ovr, AWAY Ovr

Default = NONE

Page 29

363 Misc (Miscellaneous) Menu (1 of 1)

Access Level

DescriptionItem Field

Range

LTD

• • •

• • • •

INST

USER

ADV

The units of measure that all of the temperatures are to be displayed in by the control.

The operating mode for the back lighting on the LCD as well as the time of keypad inactivity until the control automatically returns to the default display.

(

BACKLITE = OFF BACKLITE = 30 sec BACKLITE = ON (returns after 90 seconds)

The access level that is to be used by the control.

DIP switch =

returns after 10 seconds)

(returns after 30 seconds)

Unlock

Room Temperature Units (RTUs) 062 and 063

View

UnOcc 1

Heat

ItemMenu

A single RTU may be connected to the Universal Reset Control 363 in order to provide the control with indoor temperature feedback for the mixing side of the heating system (Refer to Essay E 002). When using an RTU, several items related to the mixing side of the heating system are no longer available in the control’s User Interface. These items are available only in the RTU’s User Interface. Also, the number of items that are available on the RTU depends on the type of RTU that is connected to the control.

˚F, ˚C

Default = °F

OFF, 30 sec, ON

Default =

ADV, INST, USER, LTD

Default = INST

363 RTU View Menu (1 of 1)

Item Field

LTD

INST

Section

USER

• • • • • •

• • • • •

• • • • • •

• ••

•

Access Level

ADV

RTU 062

RTU 063

Description

Current room air temperature.

RTU SENS = AIR

Target room air temperature.

RTU SENS = AIR

Current outdoor air temperature.

Current slab (floor) sensor temperature.

REMOTE 3 = SLAB

29 of 40

Range

- - -, 14 to 167˚F (-10 to 75˚C)

- - -, 35 to 100˚F (2 to 38˚C)

-67 to 149˚F (-55 to 65˚C)

-58 to 167˚F (-50 to 75˚C)

Page 30

363 RTU Adjust Menu (1 of 1)

Access Level

Item Field

Description

Range

Actual

Setting

Occ

UnOcc

LTD

Section

USER

• • • • • •

• • • •

• ••

• • ••

• ••

INST

ADV

RTU 062

RTU 063

The desired room air temperature during an Occupied period for the mixing zones.

Note:

There is only a ±3°F adjustment in the

LTD access level. The desired room air temperature during an

UnOccupied period for the mixing zones.

Note:

There is only a ±3°F adjustment in the

LTD access level.

DIP switch =

The amount of morning boost.

DIP switch =

Selects whether the RTU is to use its internal air sensor.

This item allows for remotely adding a 10K sensor to the RTU. Applications are for temperature averaging.

This item allows for remotely adding a second 10K sensor to the RTU. Applications are for temperature averaging.

This item allows for remotely adding a third 10K air sensor to the RTU, or a 10K slab sensor to measure slab temperature.

MIX MIN = OFF

The minimum target temperature at the slab sensor when not in WWSD.

REMOTE 3 = SLAB

The maximum target temperature at the slab sensor.

REMOTE 3 = SLAB

Setback

(for Slab Sensor only)

35 to 100˚F (2 to 38˚C)

Default = 70°F (21°C)

35 to 100˚F (2 to 38˚C)

Default = 65°F (18°C)

OFF, 0:20 to 8:00 hr

Default = OFF

OFF, AIR

Default = AIR

NONE, AIR

Default = NONE

NONE, AIR

Default =

NONE, AIR, SLAB

Default = NONE

OFF, 35 to 120°F (OFF, 2 to 49°C)

Default = 70°F (21°C)

40 to 150°F (4 to 66°C)

Default = 90°F (32°C)

NONE

363 RTU Monitor Menu (1 of 1)

Access Level

Item Field

LTD

USER

INST

ADV

RTU 062

• • • • • •

• • • • •

Description

RTU 063

The highest outdoor air temperature recorded since this item was last cleared.

To clear, press & hold the

The lowest outdoor air temperature recorded since this item was last cleared.

To clear press, & hold the

The highest room air temperature recorded since this item was last cleared.

To clear press, & hold the

The lowest room air temperature recorded since this item was last cleared.

To clear, press & hold the

30 of 40

UP & DOWN

buttons

Range

-67 to 149˚F (-55 to 65˚C)

14 to 167˚F (-10 to 75˚C)

Page 31

363 RTU Schd (Schedule) Menu (1 of 1)

Access Level

Item Field

LTD

Section

• • • • •

USER

INST

ADV

RTU 062

RTU 063

The type of setback override that is in effect.

DIP switch =

AWAY is available even if DIP ≠ Setback

363 RTU Misc (Miscellaneous) Menu (1 of 1)

Access Level

Item Field

Description

Setback

Description

Range

NONE, TMPY Occ Ovr, PERM Occ Ovr, TMPY UnOcc Ovr, PERM UnOcc Ovr, AWAY Ovr

Default = NONE

Range

LTD

• • • • •

• • • • • •

USER

INST

ADV

RTU 062

RTU 063

The units of measure that all of the temperatures are to be displayed in by the RTU.

The operating mode for the back lighting on the LCD as well as the time of keypad inactivity until the RTU, automatically returns to the view menu.

BACKLITE = OFF (returns after 10 seconds) BACKLITE = 30 BACKLITE = ON (returns after 90 seconds)

The access level that is to be used by the RTU.

DIP switch =

sec (returns after 30 seconds)

Unlock

Testing the Control

The Universal Reset Control 363 has a built in test routine which is used to test the main control functions. The 363 continually monitors the sensors and displays an error message whenever a fault is found. See the following pages for a list of the 363’s error messages and possible causes. When the and relays are tested in the following test sequence.

TEST SEQUENCE

Each step in the test sequence lasts 10 seconds.

During the test routine, the test sequence is paused by pressing the well as the word PAUS. If the test routine. If the test sequence is paused, the to rapidly advance through the test sequence. To reach the desired step, repeatedly press and release the appropriate device and segment in the display turn on.

Test

button is pressed, the

Test

button is not pressed again for 5 minutes while the test sequence is paused, the control exits the entire

Test

light is turned on. The individual outputs

Test

button. While paused, the control displays the testing step as

Test

button can be pressed again to advance to the next step. This can also be used

Test

˚F, ˚C

Default = °F

OFF, 30 sec, ON

Default = 30 sec

ADV, INST, USER, LTD

Default = INST

off

not testing

red

testing

red

testing paused

Test

button until the

Step 1

Step 2

Step 3

- If FLOT is selected in the MIXING item, the mixing valve is run fully open. If VAR is selected in the MIXING item, the injection

pump is ramped up over 10 seconds to 100%.

- If STOR is selected in the MIXING item, the switching relay is energized and the storage tank injection pump is operated. At the same time, the Storage segment is displayed in the LCD. Otherwise, N/A is displayed for 1 second.

- If FLOT is selected in the MIXING item, the mixing valve is run fully closed. If VAR is selected in the MIXING item, the injection pump is ramped down over 10 seconds.

31 of 40

Page 32

Step 4

- The mixing pump

NOTE:

Only if there is a mixing demand can the control be paused in step 4.

(Mix P2)

is turned on for 10 seconds and then shuts off.

Step 5

Step 6

Step 7

Step 8

MAX HEAT (MAX HEAT)

The Universal Reset Control 363 has a function called maximum set temperatures, and the mixing device at the set percentage, as long as there is a demand for heat. The control continues to operate in this mode for up to 24 hours or until either the Item, Menu or Test button is pressed. This mode may be used for running all circulators during system start-up in order to purge air from the piping. To enable the Max Heat feature, use the following procedure.

1) Press and hold the Test button for more than 3 seconds. At this point, the control displays

2) Using the Up or Down buttons, select the word YES. After 3 seconds, the control flashes

3) Set the desired output of the mixing device by using the Up and / or Down buttons on

- The boiler pump

NOTE:

Only if there is a boiler demand can the control be paused in step 5.

- The

Boiler

NOTE:

Only if there is a boiler demand can the control be paused in step 6.

- If PUMP is selected in the DHW THRU item, the selected in the DHW THRU item, the is selected in the DHW THRU item, N/A is displayed in the LCD for 1 second.

NOTE:

Only if there is a DHW demand can the control be paused in step 7.

- After the test sequence is completed, the word COMPLETE is displayed for 1 second and the control resumes its normal operation.

(Pump P1)

contact is turned on for 10 seconds. After 10 seconds, the

is turned on and remains on.

DHW Pmp/Vlv

and

contact is closed for 10 seconds. If VALV is

Boil P1

contacts are closed for 10 seconds. If NONE

Boiler

and

Boil P1

contacts are shut off.

Max Heat

the words MAX HEAT and the word NO.

the word MANUAL and the number 100. This number represents the desired output from the mixing device.

the control.

. In this mode, the 363 turns on and operates the system up to the

Item

4) To cancel the

5) Once the normal operation.

Max Heat

mode, press either the Item, Menu, or Test button.

mode has either ended or is cancelled, the control resumes

Item

Troubleshooting

When troubleshooting any heating system, it is always a good idea to establish a set routine to follow. By following a consistent routine, many hours of potential headaches can be avoided. Below is an example of a sequence that can be used when diagnosing or troubleshooting problems in a hydronic heating system.

Establish the problem. Get as much information from the customer as possible about the problem. Is there too much heat, not enough heat, or no heat? Is the problem only in one particular zone or

Establish the

Problem

Understand the

Troubleshooting

Sequence of

Operation

area of the building or does the problem affect the entire system? Is this a consistent problem or only intermittent? How long has the problem existed for? This information is critical in correctly diagnosing the problem.

Understand the sequence of operation of the system. If a particular zone is not receiving enough heat, which pumps or valves in the system must operate in order to deliver heat to the affected zone? If the zone is receiving too much heat, which pumps, valves or check valves must operate in order to stop the delivery of heat?

Use the Test

Routine

Press the Test button on the control and follow the control through the test sequence as described in the Testing section. Pause the control as necessary to ensure that the correct device is operating as it should.

32 of 40

Page 33

Sketch the

Piping in the

System

Document the

Control

Isolate the

Problem

Sketch the piping of the system. This is a relatively simple step that tends to be overlooked, however it can often save hours of time in troubleshooting a system. Note flow directions in the system paying close attention to the location of pumps, check valves, pressure bypass valves and mixing valves. Ensure correct flow direction on all pumps. This is also a very useful step if additional assistance is required in diagnosing a consistent problem.

Document the control for future reference. Before making any adjustments to the control, note down all of the items that the control is currently displaying. This includes items such as error messages, current temperatures and settings, and which devices should be operating as indicated by the LCD. This information is an essential step if additional assistance is required to diagnose the problem.

Isolate the problem between the control and the system. Now that the sequence of operation is known and the system is sketched, is the control operating the proper pumps and valves at the correct times? Is the control receiving the correct signals from the system as to when it should be operating? Are the proper items selected in the menus of the control for the device that is to be operated?

Test the Contacts

Voltages &

Sensors

Monitor the

System

Test the contacts, voltages and sensors. Using a multimeter, ensure that the control is receiving adequate voltage to the power terminals and the demand terminals as noted in the technical data. Use the multimeter to determine if the internal contacts on the control are opening and closing correctly. Follow the instructions in the Testing the Wiring section to simulate closed contacts on the terminal blocks as required. Test the sensors and their wiring as described in the sensor Data Brochures.

Monitor the system over a period of time. Select the applicable items in the Monitor menu of the control and reset them to zero. Allow the system and the control to operate over a known period of time and then record the Monitor items. Use this information to help diagnose any remaining problems.

363 Monitor Menu (1 of 3)

Note:

To clear the recorded information in the specific Item field, press and hold and .

Access Level

Item Field

LTD

INST

USER

• • • •

• •

ADV

The highest recorded outdoor air temperature since this item was last cleared. This can be used to diagnose if the Outdoor Sensor 070 has been located correctly. If this reading is too high, the 070 may be located in a location that receives direct sunlight or is influenced by an exhaust vent.

The lowest recorded outdoor air temperature since this item was last cleared. This can be used to diagnose if the Outdoor Sensor 070 has been located correctly. If this reading is too high, there may not be adequate insulation behind the 070, or it may be located too close to an exhaust vent.

The total number of hours the boiler has been firing since this item was last cleared. The boiler running time may be longer since this firing time does not include the FIRE DLY time set in the Adjust menu. This item can be used to determine if the boiler has been oversized or undersized for the attached heating load. If the boiler does not run for a high percentage of time when the outdoor temperature is near the design temperature, the boiler has most likely been oversized. If the boiler runs constantly but does not maintain the building temperature at design conditions, the boiler has been undersized.

The total number of firing cycles that the boiler has had since this item was last cleared. This item can be used in conjunction with the Boil FIRE item to determine the average cycle length of the boiler. The cycle length of the boiler is related to the

•

differential that the boiler is operating with. If the cycle length is too short, a larger differential may allow a longer cycle length.

Description

Range

-67 to 149˚F (-55 to 65˚C)

0 to 9999 hr

0 to 9999

33 of 40

Page 34

363 Monitor Menu (2 of 3)

Note:

To clear the recorded information in the specific Item field, press and hold and .

Access Level

DescriptionItem Field

Range

LTD

USER

•••

• •

ADV

INST

The highest temperature recorded at the boiler sensor since this item was last cleared.

The lowest temperature recorded at the boiler sensor since this item was last cleared.

The total number of Boiler Pump (P1) running hours since this item was last cleared.

The highest temperature recorded at the mixing sensor since this item was last cleared.

The lowest temperature recorded at the mixing sensor since this item was last cleared.

The total number of Mixing Pump (P2) running hours since this item was last cleared.

0 to 255˚F (-18 to 124˚C)

0 to 9999 hr

0 to 255˚F (-18 to 124˚C)

0 to 9999 hr

• • •

• •

•

The highest recorded temperature of the domestic hot water or thermal storage tank since this item was last cleared. This information can be used to monitor the performance of the alternate heat source for the mixing system.

The lowest recorded temperature of the domestic hot water or thermal storage tank since this item was last cleared.

The total number of DHW pump or valve running hours since this item was last cleared.

This item is an adjustable warning. If a DHW demand exists continually for longer than this warning setting, the control will display a warning message.

This item is an adjustable warning, that can only be viewed if the 10K 1 item has been set to INDR. If the air temperature measured by the indoor air sensor exceeds this setting, the control will display a warning message.

This item is an adjustable warning, that can only be viewed if the 10K 1 item has been set to INDR. If the air temperature measured by the indoor air sensor drops below this setting, the control will display a warning message.

This item is an adjustable warning. If either the boiler or mixing supply temperature does not begin to increase within the set amount of time when required, the control will display a warning message.

0 to 255˚F (-18 to 124˚C)

0 to 9999 hr

0:10 to 20:00 hr, OFF

Default = OFF

50 to 150˚F (10 to 66˚C)

Default = 110°F (43°C)

0 to 80˚F (-18 to 27˚C)

Default = 45°F (7°C)

3 to 40 min, OFF

Default = OFF

34 of 40

Page 35

363 Monitor Menu (3 of 3)

To clear the recorded information in the speciﬁc Item ﬁeld, press and hold and .

Note:

Access Level

DescriptionItem Field

USER

ADV

INST

The number of times that the microprocessor in the control has had to reset itself since this item was last cleared. The control will reset itself if it has experienced some form of interference that has disrupted its operation. This can be used to give an indication

•

of the quality of the electrical environment that the control has been installed in.

The number of times the control has been powered up since this item was last cleared. This number will increase if there is a lowering of the input voltage beyond the control’s usable range. This item

•

can be used as an indication of the quality of the power source.

The number of times that a communication error has been detected between the control and either an RTU or RDM since this item was last cleared. If the wires between the control and either the

•

RTU or RDM are run in a noisy electrical environment, this can cause interference in the communication between the control and the RTU or RDM.

Range

0 - 255

363 Error Messages (1 of 4)

The control was unable to store a piece of information into its EEPROM. This error can be caused by a noisy power source. The control will display the error message and will continue to operate as normal. Pressing either the Menu or Item button will clear this error.

The control was unable to read a piece of information stored in the Adjust menu. Because of this, the control was required to load the factory settings into all of the items in the Adjust menu. The control will stop operation until all of the items available in the Adjust menu of the control have been checked by the user or installer.

The control was unable to read a piece of information stored in the Monitor menu. Because of this, the control was required to load the factory settings into all of the items in the Monitor menu. The control will continue to display the error message until all of the items available in the Monitor menu of the control have been checked by the user or installer. clear the error.

The control was unable to read a piece of information stored in the Schedule menu. Because of this, the control was required to load the factory settings into all of the items in the Schedule menu. The control will continue to display the error message until all of the items available in the Schedule menu of the control have been checked by the user or installer. clear the error.

The control was unable to read a piece of information stored in the Miscellaneous menu. Because of this, the control was required to load the factory settings into all of the items in the Miscellaneous menu. The control will continue to display the error message until all of the items available in the Miscellaneous menu of the control have been checked by the user or installer. be ADV in order to clear the error.

rorrE fo noitpircseDdeyalpsiD rorrE

Access level must be ADV in order to clear the error.

Note:

Access level must be ADV in order to

Note:

Access level must be ADV in order to

Note:

Access level must

Note:

The RTU was unable to store a piece of information to the EEPROM. This error can be caused by a noisy power source to the control. The control will display the error message and will continue to op e r a t e a s no r m a l . P r e s s ing e i t her t h e M e n u or I t e m bu t t on w i l l c l e a r t h i s er r o r.

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Page 36

363 Error Messages (2 of 4)

Error Displayed Description of Error

The RTU was unable to read a piece of information stored in the Adjust menu. Because of this, the control was required to load the factory settings into all of the items in the Adjust menu. The control will operate based on only the in the Adjust menu of the RTU have been checked by the user or installer. be ADV in order to clear the error.

The RTU was unable to read a piece of information stored in the Monitor menu. Because of this, the control was required to load the factory settings into all of the items in the Monitor menu. The control will continue to display the error message until all of the items available in the Monitor menu of the RTU have been checked by the user or installer.

The RTU was unable to read a piece of information stored in the Schedule menu. Because of this, the control was required to load the factory settings into all of the items in the Schedule menu. The control will continue to display the error message until all of the items available in the Schedule menu of the RTU have been checked by the user or installer. clear the error.

The RTU was unable to read a piece of information stored in the Miscellaneous menu. Because of this, the control was required to load the factory settings into all of the items in the Miscellaneous menu. The control will continue to display the error message until all of the items available in the Miscellaneous menu of the RTU have been checked by the user or installer. be ADV in order to clear the error.

Either an incorrect device has been connected to the tekmar Net RTU has been connected to the control and the to

Reset Ratio

. Once the problem has been corrected, press either the Menu or Item button to clear

the error message from the control.

Characterized Heating Curve

Note:

Access level must be ADV in order to clear the error.

Note:

Heating Curve / Reset Ratio

settings until all of the items available

Note:

Access level must

Access level must be ADV in order to

Note:

Access level must

(tN1 / tN2) input terminal, or an

DIP switch has been set

A short circuit has been read between the tekmar Net

(tN1 / tN2) terminal and a Com terminal on the control. Either the wires leading to the tN1/tN2 device are shorted or the polarity of the wires is reversed. Determine the cause and remove the short. The error message can be cleared by pressing either the Menu or Item button.

The control is no longer able to read the information that is coming from the RTU. Reconnect the RTU and press either the Menu or Item button to clear the error. If the RTU has been deliberately disconnected from the control, remove power from the control for 10 seconds and then repower the control in order to clear the error message.

The control is no longer able to read the Outdoor sensor due to a short circuit. In this case the control assumes an outdoor temperature of 32˚F (0˚C) and continues operation. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the Outdoor sensor due to an open circuit. In this case the control assumes an outdoor temperature of 32˚F (0˚C) and continues operation. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the Mixing Supply sensor due to a short circuit. In this case the control will operate the mixing device at a fixed 15% of output as long as there is a Mixing Demand. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the Mixing Supply sensor due to an open circuit. In this case the control will operate the mixing device at a fixed 15% of output as long as there is a Mixing Demand. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the Boiler Supply sensor due to a short circuit. If the Boiler Minimum setting is higher than 100˚F (38˚C) the control will close the boiler contact when there is a call for heat in the system and the boiler temperature will be controlled by the boiler’s operating aquastat. If the Boiler Minimum setting is lower than 100˚F (38˚C) the control will not operate the boiler contact. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

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363 Error Messages (3 of 4)

Error Displayed Description of Error

The control is no longer able to read the Boiler Supply sensor due to an open circuit. If the Boiler Minimum setting is higher than 100˚F (38˚C) the control will close the boiler contact when there is a call for heat in the system and the boiler temperature will be controlled by the boiler’s operating aquastat. If the Boiler Minimum setting is lower than 100˚F (38˚C) the control will not operate the boiler contact. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the 10K 1 input because of a short circuit. The control will continue to operate as if there was nothing connected to the 10K 1 input. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the 10K 1 input because of an open circuit. The control will continue to operate as if there was nothing connected to the 10K1 input. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button. 10K 1 ≠ NONE

The control is no longer able to read the 10K 2 input because of a short circuit. If a DHW sensor was being used, the control will no longer operate the DHW system. If a Storage sensor was being used, the control will continue to operate as described in Section E3. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button.

The control is no longer able to read the 10K 2 input because of an open circuit. If a DHW sensor was being used, the control will no longer operate the DHW system. If a Storage sensor was being used, the control will continue to operate as described in Section E3. Locate and repair the problem as described in the Data Brochure D070. To clear the error message from the control after the sensor has been repaired, press either the Menu or Item button. 10K 2 ≠ NONE

The air sensor in the RTU is being read as a short circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. To clear the error message from the control, press either the Menu or Item button.

The air sensor in the RTU is being read as an open circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. To clear the error message from the control, press either the Menu or Item button.

The Remote Sensor 1 attached to the RTU is being read as a short circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 1 ≠ NONE

The Remote Sensor 1 attached to the RTU is being read as an open circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 1 ≠ NONE

The Remote Sensor 2 attached to the RTU is being read as a short circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 2 ≠ NONE

The Remote Sensor 2 attached to the RTU is being read as an open circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 2 ≠ NONE

The Remote Sensor 3 attached to the RTU is being read as a short circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 3 ≠ NONE

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363 Error Messages (4 of 4)

Error Displayed Description of Error

The Remote Sensor 3 attached to the RTU is being read as an open circuit. The RTU will continue operation using all remaining sensors. If all of the sensors are unavailable, the control will continue to operate as if the RTU was not connected to the control. This error message can be cleared once the sensor has been repaired. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control, press either the Menu or Item button. REM 3 ≠ NONE

This warning message will be displayed if the DHW demand has exceeded the setting of the DHW LONG item in the Monitor menu. If this warning occurs, any DHW priority features that the control is currently using will be cancelled and the control will continue to supply heat to both the DHW tank and the heating system. To clear this warning, press either the Menu or Item button.

This warning message will be displayed if the air temperature sensed by an indoor air sensor exceeds the setting of the ROOM HOT item in the Monitor menu. The control will continue to operate as normal with this warning. To clear this warning, press either the Menu or Item button.

This warning message will be displayed if the air temperature sensed by an indoor air sensor is below the setting of the ROOM CLD item in the Monitor menu. The control will continue to operate as normal with this warning. To clear this warning, press either the Menu or Item button.

This warning message will be displayed if the boiler supply does not increase to the target temperature within a set time. The time limit is set using the NO HEAT item in the Monitor menu. To clear this warning, press either the Menu or Item button.

This warning message will be displayed if the mixing device operates continuously at full output for a set time limit. The time limit is set using the NO HEAT item in the Monitor menu. To clear this warning, press either the Menu or Item button.

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Notes

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Technical Data

Universal Reset Control 363

Mixing, Boiler & DHW

Literature — D 363, A 363’s, D 001, D 070, E 003, E 021, U 363. Control — Microprocessor PID control; This is not a safety (limit) control. Packaged weight — 3.9 lb. (1760 g), Enclosure A, blue PVC plastic Dimensions — 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)

”” ” Approvals — CSA C US, CSA/UL 61010-1, meets Class B: ICES & FCC Part 15 Ambient conditions — Indoor use only, 36 to 104°F (2 to 40°C)

RH ≤80% to 88°F (31°C), down to 50% RH @ 104°F (40 °C) Altitude <6560 ft (2000 m)

Installation Category II, Pollution Degree 2 Power supply — 115 V (ac) ±10%, 60 Hz, 1800 VA Relays — 230 V (ac) 7.5 A 1/3 hp, pilot duty 240 VA Var. Pump — 230 V (ac) 2.4 A 1/6 hp, fuse T2.5 A 250 V Demands — 20 to 260 V (ac) 2 VA Sensors included — NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

Outdoor Sensor 070 and 2 of Universal Sensor 071. Optional devices — tekmar type #: 032, 040, 062, 063, 070, 071, 072, 073, 076, 077,

084, 369.

View

Item

Universal Reset Control 363

Mixing, Boiler & DHW

Demand

231

Com

Mix

Dem

8 11

Boil

Power

Setp/

Dem

Pmp / Vlv

N L

DHW

Mix Demand Boiler Demand

DHW Demand Setpoint Demand WWSD

Minimum

DHW

Maximum

10 12 14 16

Boiler

DHW

Mix

Pwr

Cls/

Opn

Mix

Var

Setback

None

See product literature INSTALLATION CATEGORY II

Made in Canada by tekmar Control Systems Ltd. tektra 929-05

Power 115 V ±10% 60 Hz 1800 VA

Relays 230 V (ac) 7.5 A 1/3 hp, pilot duty 240 VA Var. Pump 230 V (ac) 2.4 A 1/6 hp, fuse T2.5 A 250V Demands 20 to 260 V (ac) 2 VA

C US

Signal wiring must be rated at least 300 V. Supply wiring must be rated 90°C minimum

Do not apply power

Com19tN1/

10K

Com UnO

tN2

Reset Ratio

Characterized Heating Curve

10K

22 23

Test

Com24Mix25Boil

off

not testing

red

testing

red

testing paused

For maximum heat,

Test

press and hold button for 3 seconds.

Meets Class B: Canadian ICES FCC Part 15

Out

The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to radio or television reception, which is determined by turning the control off and on, the user is encouraged to try to correct the interference by reorienting or relocating the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit from that to which the receiver is connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Date Code

H1153E

Caution The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper wires.

Attention Un boîtier nonmétallique n’assure pas la continuité électrique des conduits. Utiliser des manchons ou des ﬁls de accord spécialement conçus pour la mise á la terre.

Limited Warranty and Product Return Procedure

Limited Warranty The liability of tekmar Control Systems Ltd. and tekmar Control Systems, Inc. (“tekmar”) under this warranty is limited. The purchaser, by taking receipt of the tekmar product (“product”), acknowledges receipt of the terms of the warranty and acknowledges that it has read and understands same.

tekmar warrants each tekmar product against defects in workmanship and materials, if the product is installed and used in compliance with tekmar's instructions. The warranty period is for a period of twenty-four (24) months from the production date if the product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date.

The liability of tekmar under this warranty shall be limited to, at tekmar's sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and/or workmanship of the defective product; or to the exchange of the defective product for a replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract.

This warranty applies only to those products returned to tekmar during the warranty period. This warranty does not cover the cost of the parts or labor to remove or transport the defective product, or to reinstall the repaired or

replacement product. Returned products that are not defective are not covered by this warranty.

This warranty does not apply if the product has been damaged by negligence by persons other than tekmar, accident, ﬁre, Act of God, abuse or misuse; or has been damaged by modiﬁcations, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the product was not installed in compliance with tekmar’s instructions and the local codes and ordinances; or if due to defective installation of the product; or if the product was not used in compliance with tekmar’s instructions.

This warranty is in lieu of all other warranties, express or implied, which the Governing Law (being the law of British Columbia) allows parties to contractually exclude, including, without limitation, warranties of merchantability, ﬁtness for a particular purpose, durability or description of the product, its non-infringement of any relevant patents or trademarks, and its compliance with or non-violation of any applicable environmental, health or safety legislation; the term of any other warranty not hereby contractually excluded is limited such that it shall not extend beyond twenty-four (24) months from the production date, to the extent that such limitation is allowed by the Governing Law.

Product Return Procedure Products that are believed to have defects in work-

manship or materials must be returned, together with a written description of the defect, to the tekmar representative for that territory. If the address of the representative is not known, please request it from tekmar at the telephone number listed below

tekmar Control Systems Ltd., Canada

Control Systems

tekmar Control Systems, Inc., U.S.A.

Head Ofﬁce: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 Tel. (250) 545-7749 Fax. (250) 545-0650 Web Site: www.tekmarcontrols.com

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All speciﬁcations are subject to change without notice.

Printed in Canada on recycled paper. D 363 -12/08.

tekmar 363 Installation

User Interface

Table of Contents

Display

Symbol Description

Sequence of Operation

General Operation

Boiler Reset

Section E —Storage

Installation

DIP Switch Settings

Access Levels

Testing the Control

Troubleshooting

Technical Data