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Cleaning the control dip switch settings, Connecting the control, Test the modulating outputs – tekmar 265 Boiler Control User Manual

Page 26: General, Advanced / installer, External input / stand alone

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© 2010 D 265 - 07/10

26 of 36

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 or 115 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 the brochure.

3

2

4

1

5

Com

-

Boil

Sup

Boil

Ret

Out

+

UnO

Sw

Test the Modulating Outputs

Connect an ammeter to the modulating output Mod 1 terminals (6 and 7)
and observe the current reading during operation or during the Test
Sequence in the Test the Control section. For example, when using
a 4 - 20 mA output, the initial percentage output is zero and the
meter should read 4 mA. As the Boiler 1 Modulation increases in the
VIEW menu, the meter reading should increase until 100% Boiler 1
Modulation is reached at which point the meter should read 20 mA.
When the 4 - 20 mA modulation decreases, the meter should start at
20 mA and eventually reach 4 mA when the display shows 0% Boiler 1
Modulation.

Repeat the same procedure for modulating output Mod 2
terminals (8 and 9) and Mod 3 terminals (10 and 11).

mA

7

6

Mod 1 mA

-

+

The control’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the control. Do
not use solvents or cleaning solutions.

Cleaning The Control

Dip Switch Settings

GENERAL

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.

Advanced / Installer

The Advanced / Installer DIP switch selects the access level of the
control. In the Installer access level, a limited number of items may be
viewed and / or adjusted. In the Advanced access level, all items may
be viewed and / or adjusted.

External Input / Stand Alone

The External Input / Stand Alone DIP switch selects whether a tekmar
Outdoor Sensor 070 or an external 0 - 10 V (dc) input signal is to be
connected to the Com – and the Out + terminals (1 and 4).

DIP Switches

Boiler Control 265

Menu

Item

Boiler Demand
DHW / Setpoint Demand
WWSD
Modulation
Boiler Output (x10,000 BTU/hr)
External Input Signal

Offset / Priority Override

Test

off

not testing

red

testing

red

testing paused

For maximum
heat, press &
hold Test for 3
seconds.

Made in Canada by

tekmar Control Systems Ltd.

Power

115 V ±10% 50/60 Hz 600 VA

Relays

230 V (ac) 5 A 1/3 hp, pilot duty 240 VA

Demands

20 to 260 V (ac) 2 VA

Stand Alone

Advanced

External Input

Off

CA.

Off

Alarm

Fixed Lead

First On / Last Off

First On / First Off

Soft Stop

Rotate

Parallel

Installer

Exercise

Sequential

rol 265

Boiler Co

Menu

Item

Boiler Demand
DHW / Setpoint Demand
WWSD
Modulation
Boiler Output (x10,000 BTU/hr)
External Input Signal

Offset / Priority Override

not testing

red

testing

red

testing paused

For maximum
heat, press &
hold Test for 3

Made in Canada by

tekmar Control Systems Ltd.

yy

Power 115 V ±10% 50/60 Hz 600 VA

Relays

230 V (ac) 5 A 1/3 hp, pilot duty 240 VA

Demands

20 to 260 V (ac) 2 VA

xed Lead

t On / Last Off

On / First Off

Rotate

)

off

re

xe

t O

On

Ro

Stand Alone

Advanced

External Input

Off

CA.

Off

Alert

Fixed Lead

First On / Last Off

First On / First Off

Soft Stop

Rotate

Parallel

Installer

Exercise

Sequential

Stand Alone

Advanced

External Input

Off

C.A.

Off

Alert

Fixed Lead

First On / Last Off

First On / First Off

Soft Stop

Rotate

Parallel

Installer

Exercise

Sequential