- Data Brochure
Boiler Control 265
D 265
07/10
1
of
36
©
2010 D
265
-
07/10
The tekmar Boiler Control 265 can control the supply water temperature on up to three modulating boilers based on outdoor
temperature or setpoint requirements. The control can be set to control up to two modulating boilers based on outdoor temperature
or domestic hot water requirements. A large easy to read display provides current system temperatures and operating status. The
control has outputs for a primary pump, individual boiler pumps, and either a combustion air damper or an alert.
Additional functions include:
• Outdoor
Reset
• Sequential or Parallel Modulation
• Installer and Advanced access levels
• Primary pump output
• Individual boiler pump outputs
• Pump
purging
• Boiler demand for space heating loads
• DHW demand for domestic hot water loads
• Setpoint demand for setpoint loads
• 0 – 10 V (dc) BAS / EMS input
• Test sequence to ensure proper component operation
• Setback input for energy savings
• CSA C US certified
• Pump
exercising
Input
Universal
Sensor
Included
Input
Universal
Sensor
Included
Input
Outdoor
Sensor
Included
or
Input
0-10 V (dc)
External Signal
Input
Boiler
Demand
Output
Modulating
Boiler
Output
Boiler
Enable
Output
Pump
Output
Boiler
Enable
or
Pump
Input
Setpoint
or DHW
Demand
Input
115 V (ac)
Power Supply
Output
Primary
Pump
Input
Timer or Switch
Optional
Output
Combustion Air
or Alert
1
Com
–
2
Boil
Sup
3
Boil
Ret
4
Out
+
5
UnO
Sw
6
+
7
–
+
–
+
–
8
Mod2 mA
Mod1 mA
9 10 11
12 13
Prim
P1
L
14
N
15 16 17
1
18
1
19
2
20
2
21 22 23 24 25 26 27 28 29
Boil
Dem
30
Com
Dem
31
Setp/
DHW
Boiler Control 265
Three Modulating Boiler & DHW / Setpoint
Do not apply power
Mod3 mA
Power
Boiler
Boiler
C.A./
Alert
Boiler 3 /
DHW
Boiler
Pump 1
Boiler
Pump 2
Boiler
Pump 3
H203
7B
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.
Meets Class B:
Canadian ICES
FCC Part 15
Dat
e Code
Made in Canada by
tekmar Control Systems Ltd.
Power
115 V ±10% 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
Alert
Fixed Lead
First On / Last Off
First On / First Off
Soft Stop
Rotate
Parallel
Installer
Exercise
Sequential
Output
Modulating
Boiler
Output
Modulating
Boiler
or
Signal wiring must be rated at least 300 V.
Note:
Boiler, DHW,
or setpoint
demand must
be powered with
20 to 260 V (ac)
before the boiler
is able to fire.
