tekmar 361 User Manual

Page 1

- Data Brochure

D 361

Mixing Control 361

03/09

The Mixing Control 361 is designed to control the supply water temperature to a hydronic system in order to provide outdoor reset or setpoint operation. The control uses a variable speed injection pump to regulate the supply water temperature, while protecting the boiler against ﬂue gas condensation. The control has a Liquid Crystal Display (LCD) to view system status and operating information.

Additional functions include:

• Quick Setup for easy installation and programming of control

• User comfort adjustment to increase or decrease building space temperature

• Advanced settings to ﬁne-tune building requirements

• Boiler Control for improved energy savings

• Optional indoor sensor for room air temperature control

• Test sequence to ensure proper component operation

• Setback input for energy savings

• 120 V (ac) power supply

• CSA C US certiﬁed (approved to applicable UL standards)

• Powered mixing system pump output

30% Enable

Note:

Mixing demand must be powered with 20 to 260 V (ac) before pumps will operate or the boiler is able to ﬁre.

MIX

OCC

Terminal

Unit

Item

Mixing Control 361

Variable Speed

2 3 4

Power

Mixing

Demand

VIEW

70 90

503010

% Out

5 6 7 8

Sys

Pmp

Var

Mixing

Demand

To increase or decrease the building temperature:

Item

Press the simultaneously for 1 sec. to enter the Use the , buttons to adjust the

Display defaults back to menu after 20 sec.

ADJUST

ROOM

910

Boiler

, , buttons

setting

VIEW

C US

11 12 13 14 15 16 17

UnO

Advanced

Installer

Test

Made in Canada by tekmar Control Systems Ltd. tektra 913-01

Power: Variable Pump: Relays: Demand:

Do not apply power

Com

Boil

Return

Boiler Sensor

Supply

10% Enable

Installer Instructions

ROOM

- Set to desired room temp.

OUTDR DSGN

- Set to coldest (design)

outdoor temp. Terminal Unit Set to High Mass Radiant

Low Mass Radiant Fan Coil Convector Radiator Baseboard

Refer to brochure for more information

120V + 10% 50/60 Hz 1650 VA 240V (ac) 2.4 A (FLA) 5 A (LRA), fuse T2.5 A 240V (ac) 10 A 1/3 hp 20 to 260 V (ac) 2 VA

Out

Indr

Signal wiring must be rated at least 300V.

Mix

Com

1 2 3 4 5 6

Meets Class B: Canadian ICES FCC Part 15

Date Code

H1188D

Mixing Demand

120 V (ac) Power

Input

Signal

Input

Supply

Output

Mixing System

Pump

Output

Variable Speed

Driven Pump

Output

Boiler

Input

tekmar Timer

Optional

Input

Universal Sensor

Included

Input

Universal Sensor

Included

Input

Indoor Sensor

Optional

Input

Outdoor

Included

Sensor

Page 2

How To Use The Data Brochure

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

Troubleshooting

Sequence of Operation

of the that apply to your installation. For quick installation and setup of the control, refer to the followed by the

The

Control Settings

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

Sequence of Operation

. The

, as this contains important information on the overall operation of the control. Then read the sub-sections

Quick Setup

section.

section (starting at

section has three sub-sections. We recommend reading

DIP Switch Settings

Sequence of Operation

) of this brochure, describes the various items that are adjusted and

, 2)

Installation

Table of Contents

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

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

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

Section A: General Operation .........

Section B: Mixing .............................

Section C: Boiler Operation

Installation ................................................. pg 10

DIP Switch Settings................................... pg 14

............. pg 8

pg 4

pg 5

Quick Setup .............................................. pg 14

Control Settings ....................................... pg 15

View Menu

Adjust Menu

Testing and Troubleshooting .................. pg 17

Error Messages

Technical Data .......................................... pg 20

Limited Warranty ...................................... pg 20

Installation

section,

Sequence of Operation

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

................................... pg 16

............................. pg 19

Control Settings

, 3)

Section A: General Operation

DIP Switch Settings

, and 4)

section,

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

Essay E 021 “Mixing Methods and Sizing of Variable Speed Injection Pumps”

User Interface

The 361 uses a Liquid Crystal Display (LCD) as the method of supplying information. You use the LCD in order to set up and monitor the operation of your system. The 361 has three push buttons ( your control, record your settings in the ADJUST menu table which is found in the second half of this brochure.

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 have reached the last available item, pressing and releasing the the display to the ﬁrst item.

Adjust

To make an adjustment to a setting in the control, press and hold simultaneously for 1 second, all three buttons. The display will then show the word ADJUST in the top right corner. Then select the desired item using the

button to make the adjustment.

To exit the ADJUST menu, either select the ESC item and press the seconds.

When the

Item

button is pressed and held in the VIEW menu, the display scrolls through all the adjust items in both access levels.

Item

, ,) for selecting, viewing, and adjusting settings. As you program

Item

button. Once you

Item

button will return

button. Finally, use the

or button, or leave the adjustment buttons alone for 20

and / or

Item

Additional information can be gained by observing the status ﬁeld and pointers 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.

Page 3

Display

Item Field

Displays an abbreviated name of the selected item

OUTDR BOIL MIX ROOM WWSD INDR

Terminal

Unit

Status Field

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

DSGN

TARGET

MAXMIN

UNOCC

Item

DIFF

3010 7050

% Out

Number Field

Displays the current value of the selected item

VIEW

ADJUST

Demand

Mixing

Menu Field

Displays the current menu

Buttons

Selects Menus, Items and adjusts settings

{

Symbol Description

Pump

Displays when the mixing system pump is in operation.

Burner

Displays when the boiler relay is turned on.

OCC

Occupied Schedule

Displays when the control is in occupied (Day) mode.

UNOCC

F, °C

Unoccupied Schedule

Displays when the control is in unoccupied (Night) mode.

°F, °C

Displays the unit of measure that all of the temperatures are to be displayed in the control.

Pointer

Displays the control operation as indicated by the text.

Page 4

Sequence of Operation

% Out

Current output of variable

speed injection pump

3010 7050 90

Mixing

sensor

Boiler return

sensor

Boiler supply

sensor

Section A

General Operation

Page 4-5

Section B

Mixing

Page 5-8

Section C

Boiler Operation

Page 8-9

Section A —General Operation

POWERING UP THE CONTROL

When the Mixing Control 361 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.

OPERATION

The 361 uses a variable speed injection pump to control the supply water temperature to a hydronic system. The supply water temperature is based on either the current outdoor temperature, or a fixed setpoint.

Outdoor Reset

When the outdoor design (OUTDR DSGN) setting is not set to OFF, the 361 calculates a mixing supply temperature based on the outdoor air temperature. The 361 uses a optionally indoor temperature feedback from an indoor sensor in this calculation.

Characterized Heating Curve

and

Terminal Unit

Indoor Design

Design Supply

Outdoor Design

Setpoint Control

When the outdoor design (OUTDR DSGN) setting is set to OFF, the 361 supplies a fixed mixing supply temperature equal to the MIX TARGET setting. An outdoor sensor is not required during this mode of operation.

VARIABLE SPEED

A standard wet rotor circulator is connected to the 361 on the and 8). The 361 increases or decreases the power output to the circulator when there is a mixing 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 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 horizontal bar graph.

BOILER PROTECTION (BOIL MIN)

The 361 is capable of providing boiler protection from cold mixing system return water temperatures. If the boiler sensor temperature is cooler than the BOIL MIN setting while the boiler is firing, the 361 reduces the output to the variable speed injection pump. This limits the amount of cool return water to the boiler, and allows the boiler temperature to recover. This feature can only be used if a boiler sensor is installed.

Var Pmp

and N terminals (7

Decreasing Outdoor Temperature

Increasing Water Temperature

Page 5

EXERCISING

The 361 has a built-in exercising function. If a pump has not been operated at least once every 3 days, the control turns on the output for 10 seconds. This minimizes the possibility of a pump seizing during a long period of inactivity. While the control is exercising, the

Test

LED flashes.

Note:

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

SETBACK (UNOCCUPIED)

To provide greater energy savings, the 361 has a setback capability. With setback, the supply water temperature in the system is reduced when the building is unoccupied. By reducing the supply water temperature, air temperature in the space may be reduced even when thermostat(s) are not turned down. Any time the terminals are shorted together, the control operates in the unoccupied (Night) mode. When in the unoccupied (Night) mode, the UNOCC segment is displayed in the LCD. The 361 adjusts the supply water temperature based on the UNOCC settings made in the control. This feature has no effect when the control is used as a setpoint control.

FACTORY DEFAULTS

The control comes preset with several factory defaults. These defaults are based on the terminal unit selection (see section B2). To fine-tune building requirements, these defaults may be changed. If a factory default value for a terminal unit is changed, the terminal unit number will flash when selected in the ADJUST menu.

To reload the factory defaults listed in section B2, power down the control and wait for 10 seconds. Power up the control while simultaneously holding the flashing.

UnO

Com

UnO Sw

(11) and the

Com

(12)

Timer Switch

Item

and buttons. The terminal unit number should now be displayed constantly in the LCD rather than

Section B: Mixing

Section B1

General

Section B2

Installer

Section B3

Advanced

Section B1: General

MIXING DEMAND

A mixing demand is required in order for the 361 to provide heat. A mixing demand is generated by applying a voltage between 24 and 240 V (ac) across the terminals (1 and 2). Once voltage is applied, the LCD. If the 361 is not in WWSD, the 361 closes the a MIX TARGET supply temperature based on the outdoor air temperature and settings. If required, the 361 operates the boiler in order to provide heat to the variable speed injection pump.

SYSTEM PUMP OPERATION (

The system pump contact ( pump segment is displayed in the LCD. After the mixing demand has been satisfied, the 361 continues to operate the system pump for 20 seconds. This allows some residual heat to be purged out to the heating system. During WWSD, the system pump is operated based on the exercise function.

INDOOR SENSOR

An indoor sensor may be used in order to provide indoor temperature feedback. The indoor sensor is connected to the terminals (15 and 17). In addition, power must be applied to the DEMAND section. With the indoor sensor connected, the 361 is able to sense the actual room temperature. Indoor temperature feedback fine-tunes the supply water temperature in the mixing system to maintain room temperature. To adjust the room temperature, use the ROOM OCC or ROOM UNOCC setting in the ADJUST menu at the control.

If a multiple zone system is used with an indoor sensor, proper placement of the indoor sensor is essential. The indoor sensor should be located in an area which best represents the average air temperature of the zones.

Mixing

Demand

Sys Pmp

Mixing Demand

Sys Pmp

)

, terminal 5) closes whenever there is a mixing demand and the 361 is not in WWSD. The system

pointer is displayed in the

contact. The 361 calculates

24 to 240 V (ac)

Com

and

Mixing Demand

terminals (1 and 2) as described in the MIXING

Indr

Page 6

CHARACTERIZED HEATING CURVE

When used as a mixing reset control, the 361 varies the supply water temperature based on the outdoor air temperature. 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.

MIXING TARGET TEMPERATURE (MIX TARGET)

When used as a mixing reset control, the MIX TARGET temperature is calculated from the

Characterized Heating Curve

settings, outdoor air temperature and optionally, indoor air temperature. When used as a setpoint control, the installer sets the MIX TARGET temperature. The control displays the temperature that it is currently trying to maintain as the mixing supply temperature. If the control does not have a mixing demand, “- - -” is displayed as the MIX TARGET.

Section B2: Installer

OUTDOOR DESIGN (OUTDR DSGN)

The OUTDR 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. If a cold outdoor design temperature is selected, the mixing supply temperature rises gradually as the outdoor temperature drops. If a warm outdoor design temperature is selected, the mixing supply temperature rises rapidly as the outdoor temperature drops.

SETPOINT OPERATION (MIX TARGET)

For setpoint operation, set the OUTDR DSGN to OFF. The MIX TARGET becomes the setpoint supply temperature that the control is to maintain. The MIX TARGET temperature is set by the installer in the ADJUST menu. An outdoor sensor is not required during this mode of operation.

ROOM OCC & UNOCC (ROOM)

The ROOM is the desired room temperature for the mixing zones, and it provides a parallel shift of the temperature desired by the occupants is often different from the design indoor temperature (MIX INDR). If the room temperature is not correct, adjusting the ROOM setting increases or decreases the amount of heat available to the building. A ROOM setting is available for both the occupied (Day) and unoccupied (Night) modes.

Characterized Heating Curve

MIX DSGN

cold

OUTDR

DSGN

warm

Increasing Water Temperature

Decreasing Outdoor Temperature

. The room

Increasing Water Temperature

MIX INDR

ROOM

MIX INDR

Decreasing Outdoor Temperature

TERMINAL UNITS

When using a shape of the E 003). The 361 provides for selection between six different terminal unit types: two types of radiant floor heat, fancoil, fin-tube convector, radiator and baseboard. When a terminal unit is selected, the control automatically loads the design supply temperature (MIX DSGN), maximum supply temperature (MIX MAX) and minimum supply temperature (MIX MIN). The factory defaults are listed below. To change defaults, refer to section B3. If a default has been changed, refer to section A to reload the factory defaults.

Terminal Unit

MIX DSGN MIX MAX MIX MIN

Characterized Heating Curve

High Mass Radiant

Low Mass Radiant

(1)

120°F (49°C) 140°F (60°C)

140°F (60°C) 160°F (71°C)

OFF

, the control requires the selection of a terminal unit. The terminal unit determines the

according to how the terminal unit delivers heat into the building space (refer to Essay

(2)

OFF

Fancoil

(3)

190°F (88°C) 210°F (99°C) 100°F (38°C)

Fin-tube Convector

(4)

180°F (82°C) 200°F (93°C)

OFF

Radiator

(5)

160°F (71°C) 180°F (82°C)

OFF

Baseboard

(6)

150°F (66°C) 170°F (77°C)

OFF

Page 7

High Mass Radiant (1)

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. Default values: MIX DSGN = 120°F (49°C), MIX MAX = 140°F (60°C), MIX MIN = OFF

Low Mass Radiant (2)

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 sub-floor and the surface. This type of radiant system has a relatively low thermal mass and responds faster than a high mass system. Default values: MIX DSGN = 140°F (60°C), MIX MAX = 160°F (71°C), MIX MIN = OFF

Fancoil (3)

A fancoil terminal unit or air handling unit (AHU) consists of a 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. Default values: MIX DSGN = 190°F (88°C), MIX MAX = 210°F (99°C),

MIX MIN = 100°F (38°C)

Fin–tube Convector (4)

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 to the space is dependant on the supply water temperature to the heating element and the room air temperature. Default values: MIX DSGN = 180°F (82°C), MIX MAX = 200°F (93°C), MIX MIN = OFF

Radiator (5)

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. Default values: MIX DSGN = 160°F (71°C), MIX MAX = 180°F (82°C), MIX MIN = OFF

Baseboard (6)

A baseboard terminal unit is similar to a radiator, but has a low profile and is installed at the base of the wall. The proportion of heat transferred by radiation from a baseboard is greater than that from a fin-tube convector. Default values: MIX DSGN = 150°F (66°C), MIX MAX = 170°F (77°C), MIX MIN = OFF

Section B3: Advanced

MIXING INDOOR (MIX INDR)

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

MIXING DESIGN (MIX DSGN)

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

MIXING MAXIMUM (MIX MAX)

The MIX MAX sets the highest water temperature that the control is allowed to calculate as the MIX TARGET temperature. If the control does target the MIX MAX setting, and the MIX temperature is near the MIX MAX, the MAX segment will be displayed in the LCD while either the MIX TARGET temperature or the MIX temperature is being viewed.

for the mixing zones.

Page 8

MIXING MINIMUM (MIX MIN)

The MIX MIN is the lowest temperature that the control is allowed to use as a MIX TARGET temperature. During mild conditions, if the 361 calculates a MIX TARGET temperature that is below the MIX MIN setting, the MIX TARGET temperature is adjusted to match the MIX MIN setting. During this condition, the MIN segment will be displayed in the LCD when either the MIX TARGET or MIX temperature is being viewed. If an indoor sensor is used, and the 361 is operating at the MIX MIN temperature, the system pump is cycled using Pulse Width Modulation (PWM) with a 15 minute cycle length. By cycling the system pump and controlling the flow of supply water, the control provides an average supply water temperature to the system. This average temperature is equal to the original MIX TARGET. This minimizes overheating of the zone while the control is operating at the MIX MIN temperature.

WARM WEATHER SHUT DOWN (WWSD) OCC & UNOCC

When the outdoor air temperature rises above the WWSD setting, the 361 turns on the WWSD segment in the display. When the control is in Warm Weather Shut Down, the

Mixing Demand

pointer is displayed, if there is a demand. However, the control does not operate the heating system to satisfy this demand. If the control is in setpoint mode, the WWSD feature is not functional.

Section C: Boiler Operation

210°F

-20

(-29)

(99°C)

190 (88)

170 (77)

150 (66)

130 (54)

110 (43)

(32)

(21)

(10)

Supply Water Temperature

MIX MAX

Mixing Characterized

MIX DSGN

Heating Curve

MIX MIN

OUTDR DSGN

WWSD OCC

MIX INDR

80°F

(27°C)

(16)

Outdoor Air Temperature

WWSD UNOCC

ROOM OCC

ROOM UNOCC

40 (5)

(-7)

(-18)

Section C1

General Operation

Section C2

Boiler Sensor

Placement

Section C1: General Operation

BOILER OPERATION

When the 361 determines that boiler operation is required, the closed, the burner segment in the LCD is displayed.

BOILER MINIMUM (BOIL MIN)

Most boilers require a minimum water temperature in order to prevent flue gas condensation. The BOIL MIN adjustment is set to the boiler manufacturer’s minimum recommended operating temperature. Only when the boiler temperature is measured by a boiler sensor can the 361 provide boiler protection. In this case, when the boiler is firing and the boiler temperature is below the BOIL MIN setting, the 361 turns on the MIN segment and reduces the heating load on the boiler by limiting the output of the variable speed injection pump. If the installed boiler is designed for low temperature operation, set the BOIL MIN adjustment to OFF.

BOILER PROTECTION

Refer to section A for a description of boiler protection.

Boiler

contact terminals (9 and 10) close. While the

Boiler

contact is

Page 9

Section C2: Boiler Sensor Placement

BOILER SENSOR ON THE SUPPLY (

Boiler Sensor

DIP switch

= Supply

)

The boiler sensor can be located on the boiler supply if the 361 is the only control that is operating the boiler. When in the supply mode, the 361 determines the required operating temperature of the boiler using

Boiler Load Reset

. With

Boiler Load Reset

, the 361 operates the boiler at the lowest possible supply temperature that is sufficient to satisfy the requirements of the variable speed injection pump. If this mode of operation is selected, the boiler pump should either operate continuously, or be operated in parallel with the system pump contact (

Note:

The boiler pump should not be operated by the boiler’s aquastat, as this may lead to

Sys Pmp

improper cycling of the boiler because of inconsistent flow past the boiler supply sensor.

BOILER DIFFERENTIAL (BOIL DIFF)

An on / off heat source such as a boiler must be operated with a differential in order to prevent short cycling. When the boiler supply temperature drops below the bottom rail of the differential, the 361 closes the

Boiler

contact to fire the boiler. When the boiler supply temperature

rises above the top rail of the differential, the 361 opens the

Boiler

contact to turn off the boiler. With the 361, either a fixed or automatic differential setting is selected. If automatic differential (Ad) is selected, the 361 automatically adjusts the boiler differential under the current load conditions to avoid short cycling.

BOILER SENSOR ON THE RETURN (

Boiler Sensor

DIP switch

The boiler sensor should be located on the boiler return if the 361 is one of many controls that can call for boiler operation. When in the return mode, the 361 provides a boiler enable as described in the BOILER ENABLE section. The 361 no longer tries to control the boiler supply water temperature directly, but allows the boiler to operate at its operating aquastat setting when required. If this mode of operation is selected, the boiler pump should either operate continuously, or be operated in parallel with the system pump contact (

Sys Pmp

Note

: The boiler pump should not be operated by the boiler’s aquastat, as this may lead to

improper cycling of the boiler because of inconsistent flow past the boiler sensor.

165°F(74°C)

160°F (71°C)

155°F (68°C)

Supply Water Temperature

= Return

Boiler supply sensor

Differential = 10°F (5°C)

)

Time

Boiler return sensor

NO BOILER SENSOR

The 361 is capable of operating without a boiler sensor if desired. Without a boiler sensor, the 361 provides a boiler enable as described in the BOILER ENABLE section, but is unable to provide boiler protection. This type of application is typical if the 361 is drawing

No boiler sensor

heat from a heat source that already incorporates some form of boiler protection.

BOILER ENABLE (

30% Enable / 10% Enable

)

The 361 has a DIP switch that allows for the selection between a 30% boiler enable and a 10% boiler enable. This switch is only functional when the

In the 30% position, the 361 closes the

Boiler Sensor

DIP switch is set to

Boiler

contact when the variable speed output exceeds 30%. The

Return

Boiler

contact remains closed until the variable speed output reduces below 15%. This setting would normally be chosen for low mass boilers (copper fintube, etc.), or systems with low thermal mass in the loop between the boiler and the variable speed injection pump.

In the 10% position, the 361 closes the

contact when the variable speed output exceeds 10%. The

Boiler

contact remains

Boiler

closed until the variable speed output reduces below 5%. This setting is normally chosen for high mass boilers (cast iron, steel firetube, etc.), or systems with large thermal mass in the loop between the boiler and the variable speed injection pump.

Boiler

In order to prevent short cycling, the

contact has a minimum on time, and a minimum off time.

Page 10

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 361 includes: One Mixing Control 361, One Outdoor Sensor 070, Two Universal Sensors 082, Data Brochures D 361,

Note

STEP TWO

Remove the control from its base by pressing down on the release clip in the wiring chamber and sliding the control away from it. 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 will 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 082, and Mixing Sensor 082 according to the instructions in the Data Brochure D 070,

• If an Indoor Sensor 076 or 077 is used, install the indoor sensor according to the instructions in the Data Brochure D 074, and run

: Carefully read the details of the

and run the wiring back to the control.

the wiring back to the control.

GETTING READY

D 070, D 001, Application Brochure A 361, Essay E 021.

Sequence of Operation

MOUNTING THE BASE

ROUGH-IN WIRING

to ensure that you have chosen the proper control for your application.

• Run wire from other system components (pump, boiler, 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.

STEP FOUR

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

ELECTRICAL CONNECTIONS TO THE CONTROL

120 V (ac) Power

Connect the 120 V (ac) power supply to the

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

Pmp

terminal (7) from the

Power L

terminal (3).

Power L

Sys Pmp

and

Power N

terminal (5) and to the

terminals (3 and

Var

120 V (ac)

3 Power L

Mixing

Demand

Mixing Demand

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

Mixing Demand

terminals (1 and 2).

24 to 240 V (ac)

Page 11

Output Connections

System Pump Contact (

The

Sys Pmp

output terminal (5) on the 361 is a powered output.

)

When the relay in the 361 closes, 120 V (ac) is provided to the

Pmp

terminal (5) from the

Power L

terminal (3). To operate the system pump, connect one side of the system pump circuit to terminal (5), and the second side of the pump circuit to the neutral (N) terminal (6).

Variable Speed Injection Pump (

Var Pmp

)

The 361 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 361 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 procedures if this fuse is blown.

The

Var Pmp

supplied to the

terminal (7) on the 361 is a powered output. Power is

Var Pmp

terminal (7) from the

Power L

terminal (3). To operate the variable speed injection pump, connect one side of the pump circuit to

Var Pmp

terminal (7), and the second side of the

pump circuit to the neutral (N) terminal (8).

Sys

Power

120V (ac)

Power

Sys

Pmp

120V (ac)

Var

Pmp

System

pump

Variable speed injection pump

Boiler Contact

The

Boiler

terminals (9 and 10) are an isolated output in the 361. 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 361 requires the boiler to fire, it closes the contact between terminals 9 and 10.

Sensor and Unpowered Input Connections

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

Outdoor Sensor

Connect the two wires from the Outdoor Sensor 070 to the and

Out

terminals (15 and 16). The outdoor sensor is used by the

361 to measure the outdoor air temperature.

Boiler Sensor

Connect the two wires from the Boiler Sensor 082 to the

Boil

terminals (12 and 13). The boiler sensor is used by the 361 to

measure the boiler temperature.

Com

and

Com

Boil

Boiler

Com

Out

Boiler supply

sensor

Mixing Sensor

Connect the two wires from the Mixing Sensor 082 to the

Mix

terminals (12 and 14). The mixing sensor is used by the 361 to measure the mixed supply water temperature after the variable speed injection pump. Normally the sensor is attached to the pipe downstream of the system pump.

Com

and

Com

Boiler return

sensor

Boil

Mix

Mixing sensor

System pump

Page 12

Indoor Sensor

If an indoor sensor is used, connect the two wires from the sensor to the

Com

and

Indr

terminals (15 and 17). The indoor sensor is

used by the 361 to measure the room air temperature.

Unoccupied Switch

If an external timer (tekmar Timer 032) or switch is used, connect the two wires from the external switch to the terminals are shorted together, the control registers an unoccupied signal.

UnO Sw

and

Com

terminals (11 and 12). When these two

Com

Timer Switch

Out

Indr

UnO

Com

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 a terminal block,

pull it 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

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 ac-

Ω

Com

Boil

Mix

curacy. 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

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

Power L

and

Power N

terminals (3 and 4)

Ω

Power

108 to 132 V (ac)

using an AC voltmeter. The reading should be between 108 and 132 V (ac).

Test The Powered Inputs

Mixing Demand

Measure the voltage between the

2). When the mixing demand device calls for 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).

Mixing Demand

terminals (1 and

Mixing

Ω

Demand

20 to 260 V (ac)

Page 13

Test The Outputs

System Pump (Sys Pmp)

If a system pump is connected to the

Sys Pmp

terminal (5), make

Power

Sys

Pmp

sure that power to the terminal block is off, and install a jumper between the a second jumper between power is applied to the

Power L

and the

Power N

Power L

Sys Pmp

terminals (3 and 5). Install

and N terminals (4 and 6). When

and

Power N

terminals (3 and 4), the system 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 jumpers.

Variable Speed Injection Pump (

If a variable speed injection pump is connected to the install a jumper between the

Var Pmp

Power L

and the

)

Var Pmp

terminals (3 and 7). Install a second jumper between

120V (ac)

terminal (7), make sure that power to the terminal block is off, and

System pump

Power N

and terminals (4 and 8). When the variable speed 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 jumpers.

Boiler

If the boiler circuit is connected to the between 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 loop pump is running). If the boiler operates properly, disconnect the power and remove the jumper.

Boiler

terminals (9 and 10), make sure power to the boiler circuit is off, and install a 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.

UnO

Com

Boil

Mix

Page 14

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.

Advanced

Installer

30% Enable

Return

Boiler Sensor

Supply

10% Enable

ADVANCED / INSTALLER

The

Advanced / Installer

DIP switch is used to select which items are available to be viewed and / or adjusted in the user interface.

30% ENABLE / 10% ENABLE

The position of the normal conditions. This switch is only operational if the

30% Enable / 10 % Enable

DIP switch determines at which pump output the control will close the

Boiler Sensor

DIP switch is set to

Return

. Refer to section C2.

Boiler

contact under

BOILER SENSOR (RETURN / SUPPLY)

The

Boiler Sensor

of the boiler loop, the DIP switch must be set to

DIP switch selects the installation location for the boiler sensor. When the boiler sensor is installed on the supply side

Supply

. The boiler aquastat should be set at least 20°F (11°C) higher than the required

design boiler water temperature. The boiler is controlled as described in section C.

For systems where the 361 provides a heat demand to an external boiler control, the boiler sensor should be installed on the return side of the boiler loop. When the boiler sensor is installed on the return side of the boiler loop, the DIP switch must be set to

Return

. The 361 only enables the boiler when the output of the variable speed injection pump exceeds the boiler enable DIP switch setting. The contact is controlled as described in section C. The boiler’s operating temperature is controlled by its aquastat, or an external boiler reset control.

Quick Setup

Boiler

The quick setup can be used for both outdoor reset and setpoint operation. To enter the installer programming mode, set the

Installer

DIP switch to

Installer

Advanced /

OUTDOOR RESET

Access the ADJUST menu by pressing and holding simultaneously for 1 second, all three buttons. The display will now show the word

ADJUST in the top right corner.

The ROOM OCC adjustment is the ﬁrst item displayed. Use the or button to set the ROOM temperature.

The ROOM OCC setting is set to the desired room air temperature during the occupied (Day) mode.

Note

: To increase or decrease space temperature during the occupied (Day) mode, only adjust the ROOM

OCC setting.

Press and release the

set the desired temperature. The ROOM UNOCC setting is set to the desired room air temperature during

Item

button to advance to the ROOM UNOCC adjustment. Use the or button to

the unoccupied (Night) mode.

Note:

To increase or decrease space temperature during the unoccupied (Night) mode, only adjust the

ROOM UNOCC setting.

Press and release the

Item

button to advance to the OUTDR DSGN adjustment. Use the or button to set the outdoor design temperature. The OUTDR DSGN setting is set to the typical coldest temperature of the year.

Press and release the

button to advance to the

Terminal Unit

adjustment. Use the or button to select

Item

the desired terminal unit. The terminal unit number corresponds to the type of terminal that is being used. The table below lists the terminal units and their default values.

ROOM

OUTDR

Terminal Unit

OCC

DSGN

ADJUST

Terminal Unit

MIX DSGN MIX MAX MIX MIN

High Mass Radiant

(1)

120°F (49°C) 140°F (60°C)

OFF

Low Mass Radiant

(2)

140°F (60°C) 160°F (71°C)

OFF

Fancoil

(3)

190°F (88°C) 210°F (99°C) 100°F (38°C)

Fin-tube Convector

(4)

180°F (82°C) 200°F (93°C)

OFF

Radiator

(5)

160°F (71°C) 180°F (82°C)

OFF

Baseboard

(6)

150°F (66°C) 170°F (77°C)

OFF

Page 15

ADJUST

Press and release the

Item

button to advance to the units adjustment. Use the or button to set the scale

to °F or °C.

Item

To exit the ADJUST menu, press and release the

button to advance to the ESC item. Then either press

the or button, or leave the buttons alone for 20 seconds.

SETPOINT CONTROL

Access the ADJUST menu by pressing and holding simultaneously for 1 second, the the word ADJUST in the top right corner.

OUTDR

DSGN

ADJUST

Press and release the

Item

button to advance to the OUTDR DSGN adjustment. Press and hold the button

until OFF is displayed.

ADJUST

Press and release the

Item

button to advance to the MIX TARGET adjustment. Use the or button to select

MIX

TARGET

the desired temperature. The MIX TARGET setting is set to the desired setpoint supply temperature.

ADJUST

Press and release the

Item

button to advance to the units adjustment. Use the or button to set the scale

to °F or °C.

ADJUST

To exit the ADJUST menu, press and release the

Item

the or button, or leave the buttons alone for 20 seconds.

View Menu (1 of 1)

Item

, and buttons. The display will now show

button to advance to the ESC item. Then either press

Display Description Range

Advanced

Installer

Section

OUTDR

ROOM

MIX

BOIL

OCC

TARGET

OCC

VIEW

B1 B2 B3

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

(OUTDR DSGN ≠ OFF)

Current room air temperature as measured by the indoor sensor.

(Indoor sensor is present)

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

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

Current boiler temperature as measured by the boiler sensor.

(Boiler sensor is present)

-67 to 149°F (-55 to 65°C)

23 to 113°F (-5 to 45°C)

14 to 266°F (-10 to 130°C)

---, 14 to 266°F (---, -10 to 130°C)

14 to 266°F (-10 to 130°C)

Page 16

Adjust Menu (1 of 2)

Display Description Range

Advanced

Installer

Section

ADJUST

ROOM

MIX

OUTDR

Terminal Unit

OCC

TARGET

DSGN

ADJUST

The desired room air temperature during an occupied (Day) period.

(OUTDR DSGN

≠ OFF)

The desired room air temperature during an unoccupied (Night) period.

(OUTDR DSGN

≠ OFF)

Mixing setpoint temperature.

(OUTDR DSGN = OFF)

The design outdoor air temperature used in the heat loss calculation for the heating system. For setpoint operation, set the OUTDR DSGN to OFF.

The type of terminal units that are being used in the heating system.

(OUTDR DSGN ≠ OFF)

1 (High Mass Radiant), 2 (Low Mass Radiant), 3 (Fancoil), 4 (Fin-tube Convector), 5 (Radiator), 6 (Baseboard)

Actual

Setting

35 to 100°F (2 to 38°C)

60 to 200°F (16 to 93°C)

-60 to 32°F, OFF (-51 to 0°C, OFF)

MIX

INDR

MIX

BOIL

MIN

DSGN

MAX

DIFF

ADJUST

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

(OUTDR DSGN ≠ OFF)

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

(OUTDR DSGN ≠ OFF)

The maximum supply temperature for the mixing system.

(OUTDR DSGN ≠ OFF)

The minimum supply temperature for the mixing system.

(OUTDR DSGN ≠ OFF)

The minimum temperature allowed for the boiler target temperature.

(Boiler sensor is present)

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

(

Boiler Sensor

DIP switch =

Supply

AND Boiler

sensor is present)

35 to 100°F (2 to 38°C)

70°F to 220°F (21 to 104°C)

80 to 210°F (27 to 99°C)

OFF, 35 to 150°F (OFF, 2 to 65°C)

OFF, 80 to 180°F (OFF, 27 to 82°C)

Ad, 2 to 42°F (Ad, -17 to 6°C)

Page 17

Adjust Menu (2 of 2)

Test

not testing testing testing paused

off red red

Display Description Range

Advanced

Installer

Section

ADJUST

WWSD

OCC

WWSD

OCC

ADJUST

The system’s warm weather shut down during the occupied (Day) period.

The system’s warm weather shut down during the unoccupied (Night) period.

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

35 to 100°F, OFF (2 to 38°C, OFF)

°F, °C

This item exits the ADJUST menu by pressing either the or button.

Testing the Control

Actual

Setting

The Mixing Control 361 has a built-in test routine which is used to test the main control functions. The 361 continually monitors the sensors, and displays an error message whenever a fault is found. See the following pages for a list of the 361’s error messages and possible causes. When the

Test

button is pressed, the test light is turned on. The individual

outputs and relays are tested in the following test sequence.

TEST SEQUENCE

Each step in the test sequence lasts 10 seconds.

Test

During the test routine, the test sequence may be paused by pressing the be paused in a step. If the test routine. If the test sequence is paused, the

Test

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

Test

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

button. Only if there is a mixing demand can the control

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.

Step 1

Step 2

Step 3

Step 4

- The injection pump operates at 100% for 10 seconds. After 10 seconds, the injection pump is shut off.

- The system pump (

- The

Boiler

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

Sys Pmp

) is turned on for 10 seconds.

Boiler

and

Sys Pmp

contacts are shut off.

- After the test sequence is completed, the control resumes its normal operation.

Test

button until the

Page 18

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

Establish the

Problem

too much heat, not enough heat, or no heat? Is the problem only in one particular zone or 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

Use the Test

Routine

Sketch the

Piping in the

System

Document the

Control

Isolate 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?

Press the Testing section. Pause the control as necessary to ensure that the correct device is operating as it should.

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.

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

button on the control and follow the control through the test sequence as described in the

Test the Contacts

Voltages &

Sensors

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.

Page 19

Error Messages

OUTDR

MIX

VIEW

The control was unable to read a piece of information from its EEPROM. This error can be caused by a noisy power source. The control will load the factory defaults and stop operation until all the settings are verified.

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 D 070. To clear the error message from the control after the sensor has been repaired, press the

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 D 070. To clear the error message from the control after the sensor has been repaired, press the

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 variable speed injection pump at a fixed output as long as there is a mixing demand. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control after the sensor has been repaired, press the

Item

button.

Item

button.

BOIL

ROOM

VIEW

The control is no longer able to read the boiler sensor due to a short circuit. If the BOIL MIN adjustment is higher than 100°F (38°C), the control operates the

Boiler

contact as a boiler enable (see section C). The boiler temperature is then limited by the operating aquastat. If the BOIL MIN adjustment is lower than 100°F (38°C), the control does not operate the

Boiler

contact. Locate and repair the problem as described in the Data Brochure D 070. To clear the error message from the control after the sensor has been repaired, press the

Item

button.

The control is no longer able to read the boiler sensor due to an open circuit. If the BOIL MIN adjustment is higher than 100°F (38°C), the control operates the

Boiler

contact as a boiler enable (see section C). The boiler temperature is then limited by the operating aquastat. If the BOIL MIN adjustment is lower than 100°F (38°C), the control does not operate the

Boiler

contact. Locate and repair the problem as described in the Data Brochure D 070. If the boiler sensor is deliberately removed, the control must be powered down, and then powered back up. To clear the error message from the control after the sensor has been repaired, press the

Item

button.

The control is no longer able to read the indoor sensor due to a short circuit. The control will continue to operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as described in the Data Brochure D 074. To clear the error message from the control after the sensor has been repaired, press the

Item

button.

The control is no longer able to read the indoor sensor due to an open circuit. The control will continue to operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as described in the Data Brochure D 074. If the indoor sensor is deliberately removed, the control must be powered down, and then powered back up. To clear the error message from the control after the sensor has been repaired, press the

Item

button.

Page 20

Technical Data

Mixing Control 361

Variable Speed

Literature — D 361, A 361’s, D 001, D 070, E 021. Control — Microprocessor PID control; This is not a safety (limit) control. Packaged weight — 3.0 lb. (1380 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 — Ambient conditions — Indoor use only, 32 to 102°F (0 to 39°C), < 90% RH nonPower supply — 120 V ±10%, 50/60 Hz, 1650 VA Variable Pump — 240 V (ac) 2.4 A (FLA) 5 A (LRA), fuse T2.5 A Relays — 240 V (ac) 10 A 1/3 hp Demand — 20 to 260 V (ac) 2 VA Sensors included — NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

Optional devices — tekmar type #: 032, 076, 077.

CSA C US, CSA 22.2 No 24 and UL 873, meets class B: ICES & FCC Part 15.

condensing.

(ac)

Outdoor Sensor 070 and 2 of Universal Sensor 082.

MIX

OCC

Terminal

Unit

Item

Mixing Control 361

Variable Speed

2 3 4

Power

Mixing

Demand

503010

% Out

Sys

Pmp

VIEW

7090

5 6 7 8

Var

Pmp

Mixing

Demand

To increase or decrease the building temperature:

Item

• Press the

,, buttons

simultaneously for 1 sec. to

ADJUST

enter the

• Use the , buttons to

ROOM

adjust the

setting

VIEW

Display defaults back to menu after 20 sec.

C US

11 12 13 14 15 16 17

910

UnO

Boiler

30% Enable

Advanced

Installer

10% Enable

Tes t

Made in Canada by tekmar Control Systems Ltd. tektra 913-01

Power:

120 V +10% 50/60 Hz 1650 VA

Variable Pump:

240 V (ac) 2.4 A (FLA) 5 A (LRA), fuse T2.5 A

Relays:

240 V (ac) 10 A 1/3 hp

Demand:

20 to 260 V (ac) 2 VA

Do not apply power

Com

Boil

Mix

Com

Out

Return

Boiler Sensor

Supply

Installer Instructions

ROOM

- Set to desired room temp.

OUTDR DSGN

- Set to coldest (design)

outdoor temp. Terminal Unit Set to High Mass Radiant

Low Mass Radiant

Fan Coil

Convector

Radiator

Baseboard

Indr

Signal wiring must be rated at least 300V.

Meets Class B: Canadian ICES FCC Part 15

Refer to brochure for more information

H1188D

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

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

20 of 20

All speciﬁcations are subject to change without notice.

Printed in Canada. D 361 - 03/09.