Application Brochure

5 of 8
- Application
Boiler Control 261 & Setpoint Control 150
A 261-3
03/09
Copyright ©2009 A 261-3 03/09
Note: This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with
code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety
and limit devices must be added.
Mechanical
R1
Outdoor
Sensor (S2) 070
Heat
Exchanger
Pool
Sensor
(S3) 071
P3
A1
Class 2
Transformer
120 V (ac)
24 V (ac)
261
P1
Boiler
Sensor
(S1) 0
82
P2
150
Electrical
A1 = Pool or Spa High Limit Aquastat
P1 = Boiler Pump
P2 = Pool or Spa Pump
P3 = Pool or Spa Recirc. Pump
R1 = Relay 003
S1 = Boiler Sensor 082
S2 = Outdoor Sensor 070
S3 = Pool or Spa Sensor 071
U1 = tekmar Timer 033 (optional)
24 V (ac)
120 V (ac)
Class 2
Transformer
Boiler
#2
P1
P2
U1
R1
A1
S3
N
L
C
R
Boiler
#1
S1
S2
261
1
2
4
6
8
10
5 9
Do not apply power
11
12 13 14 15
Sw
UnO
7
N
L
N
Power
1716
Com
Out
3
10A
Boiler
Demand
Setpoint
Demand
Boil
Pmp
Stage Stage
Boil
Com
10A 10A
1122
3
4
6
5
7
2
1
8
= Required
= Optional
Installer
Off
Rotate
Advanced
12
3
4 567
C-
Power
R+
N/O
Com
N/C
Sensor
No Power
8A
On
—
Off
150
8A
PWM