tekmar 260 User Manual

- Data Brochure

D 260

Boiler Control 260

03/09

The Boiler Control 260 is designed to control a single stage heat source in order to provide outdoor reset or Domestic Hot Water (DHW) operation. 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

• Pump and valve exercising

• Optional indoor sensor for room air temperature control

• DHW pump or valve operation

• Optional DHW priority

• 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 boiler pump output

DHW Priority

DHW during UnOcc

Return

Off Off

Installer Instructions

ROOM

- Set to desired room temp.

OUTDR DSGN

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 1300 VA 240V (ac) 10 A 1/3 hp 20 to 260 V (ac) 2 VA

Com

Indr

Signal wiring must be rated at least 300V.

Out

- Set to coldest (design)

1 2 3 4 5 6

Meets Class B: Canadian ICES FCC Part 15

Date Code

H1154D

Note:

Boiler or DHW demand must be powered with 20 to 260 V (ac) before the boiler is able to ﬁre.

BOIL

OCC

Terminal Unit

Fire Delay DHW Demand

Item

Boiler Control 260

One Stage Boiler & DHW

2345 6

DHW

Boiler

Demand

Power

VIEW

Boiler Demand

7 8

Boil

DHW Valve

To increase or decrease the

building temperature:

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

Display defaults back to menu after 20 sec.

Item

ADJUST

ROOM

,, buttons

setting

VIEW

Advanced

Installer DHW Pump

Test

Made in Canada by tekmar Control Systems Ltd. tektra 910-01

Power:

C US

11 12

910

Boiler

DHW

Pmp/Vlv

Relays: Demand:

Do not apply power

13 14 15 16 17

UnO

Com

Boil

Input

Boiler Demand

Signal

Input

DHW Demand

Signal

120 V (ac) Power

Input

Supply

Output

Boiler System

Pump

Output

DHW Pump OR

DHW Valve

Output

Boiler

Input

tekmar Timer

Optional

Input

Indoor Sensor

Optional

Input

Outdoor Sensor

Included

Input

Universal Sensor

Included

How To Use The Data Brochure

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

Troubleshooting

of the

Sequence of Operation

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

Settings

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

section, followed by the

Control Settings

. The

Sequence of Operation

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

section (starting at

Quick Setup

DIP Switch Settings

section has three sub-sections. We recommend reading Section A:

section.

Sequence of Operation

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

Installation

, 2)

Sequence of Operation

Table of Contents

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

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

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

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

Section B: Boiler Reset

Section C: DHW

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

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

......................... pg 5

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

pg 4

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

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

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

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

Control Settings

, 3)

Installation

, and 4)

General Operation

section,

DIP Switch

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

User Interface

The 260 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 260 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 reached the last available item, pressing and releasing 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 or button, or leave the adjustment buttons alone for 20 seconds.

When the

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.

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 have

Item

button will return the

button. Finally, use the

and / or

Item

Display

Item Field

Displays an abbreviated name of the selected item

OUTDR BOIL

ROOM WWSD INDR

Status Field

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

DSGN

TARGET

MAXMIN

OCC

Fire Delay

Item

DIFF

DHW

Number Field

Displays the current value of the selected item

VIEW

ADJUST

Boiler DemandTerminal Unit

DHW Demand

min

Menu Field

Displays the current menu

Buttons

Selects Menus, Items and

{

adjusts settings

Symbol Description

Pump

Displays when the boiler pump is in operation.

DHW

OCC

DHW

Displays when the DHW pump or valve is in operation.

Burner

Displays when the boiler relay is turned on.

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

Pointer

Displays the control operation as indicated by the text.

Sequence of Operation

Section A

General Operation

Page 4

Section B

Boiler Reset

Page 5-8

Section C

DHW

Page 8-10

Section A —General Operation

POWERING UP THE CONTROL

When the Boiler Control 260 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.

OPERATION

The 260 operates a single on / off heat source to control the supply water temperature to a hydronic system. The supply water temperature is based on either the current outdoor temperature, or on a DHW target.

Outdoor Reset

The 260 calculates a supply temperature based on the outdoor air temperature. The 260 uses a tionally indoor temperature feedback from an indoor sensor in this calculation.

DHW Control

When a demand signal from a Domestic Hot Water (DHW) system is present, the control will operate the boiler to maintain the supply water temperature at 180°F (82°C). Refer to section C.

Characterized Heating Curve

and op-

Design Supply

Terminal Unit

Indoor Design

Decreasing Outdoor Temperature

Outdoor Design

Increasing Water Temperature

EXERCISING

The 260 has a built-in exercising function. If a pump or valve that is connected to the control 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 or valve seizing during a long period of inactivity. While the control is exercising, the

Note

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

SETBACK (UNOCCUPIED)

To provide greater energy savings, the 260 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 260 adjusts the supply water temperature based on the UNOCC settings made in the control.

FACTORY DEFAULTS

The control comes preset with several factory defaults. These defaults are based on the terminal unit selection (see section B2). To finetune 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 than flashing.

Test

LED flashes.

Com

UnO

UnO Sw

(13) and the

Com

(14)

Timer Switch

Item

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

Section B: Boiler Reset

Section B1

General

Section B2

Installer

Section B3

Advanced

Section B1: General

BOILER DEMAND

A boiler demand is required in order for the 260 to provide heat to the heating system. A boiler demand is generated by applying a voltage between 24 and 240 V (ac) across the

Boiler Demand

displayed in the LCD. If the 260 is not in WWSD, the 260 closes the 260 calculates a BOIL TARGET supply temperature based on the outdoor air temperature and settings. The 260 then fires the boiler, if required, to maintain the target supply temperature.

BOILER PUMP OPERATION (

The boiler pump contact ( segment is displayed in the LCD. After the boiler demand has been satisfied, the 260 continues to operate the boiler pump for 20 seconds. This allows some residual heat to be purged out to the heating system. During WWSD, the boiler pump is operated based on the exercise function. For boiler pump contact operation during DHW operation, refer to section C.

BOILER OPERATION

When the 260 determines that boiler operation is required, the burner segment in the LCD is displayed.

terminals (1 and 2). Once voltage is applied, the

Boil P1

, terminal 7) closes whenever there is a boiler demand and the 260 is not in WWSD. The boiler pump

)

Boiler

Boiler Demand

Boil P1

contact (11 and 12) closes. While the

pointer is

contact. The

24 to 240 V (ac)

Boiler

contact is closed, the

Boiler

Demand

INDOOR SENSOR

The indoor sensor is connected to the terminals (1 and 2) as described in the BOILER DEMAND section. With the indoor sensor connected, the 260 is able to sense the actual room temperature. Indoor temperature feedback fine-tunes the supply water temperature in the heating 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.

CHARACTERIZED HEATING CURVE

The 260 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.

BOILER TARGET TEMPERATURE (BOIL TARGET)

The BOIL TARGET temperature is determined from the indoor air temperature. 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 does not show a boiler target temperature. Instead, “- - -” is displayed in the LCD.

Com

and

Indr

terminals (17 and 18). In addition, power must be applied to the

Boiler Demand

Characterized Heating Curve

settings, outdoor air temperature, and optionally,

Section B2: Installer

BOIL DSGN

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 the heat loss calculations for the building. If a cold outdoor design temperature is selected, the boiler supply temperature rises gradually as the outdoor temperature drops. If a warm outdoor design temperature is selected, the boiler supply temperature rises rapidly as the outdoor temperature drops.

ROOM OCC & UNOCC (ROOM)

The 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 design indoor temperature (BOIL 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.

TERMINAL UNITS

When using a shape of the

Characterized Heating Curve

E 003). The 260 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 (BOIL DSGN), maximum supply temperature (BOIL MAX), and minimum supply temperature (BOIL 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.

Characterized Heating Curve

cold

OUTDR

DSGN

warm

BOIL INDR

Increasing Water Temperature

Decreasing Outdoor Temperature

ROOM

BOIL INDR

. The room

Increasing Water Temperature

Decreasing OutdoorTemperature

, 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

Terminal Unit

BOIL DSGN BOIL MAX BOIL 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)

140°F(60°C)

Fin-tube Convector

180°F (82°C) 200°F (93°C) 140°F (60°C)

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: BOIL DSGN = 120°F (49°C), BOIL MAX = 140°F (60°C), BOIL 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: BOIL DSGN = 140°F (60°C), BOIL MAX = 160°F (71°C), BOIL MIN = OFF

(4)

Radiator

(5)

160°F (71°C) 180°F (82°C) 140°F (60°C)

Baseboard

(6)

150°F (66°C) 170°F (77°C) 140°F (60°C)

+ 14 hidden pages