tekmar 361 Mixing Control User Manual
Page 11
Copyright © D 361 -
03/09
11 of 20
Output Connections
System Pump Contact (
Sys Pmp)
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
Sys
Pmp terminal (5) from the Power L terminal (3). To operate the
system pump, connect one side of the system pump circuit to ter-
minal (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 pro-
tection 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 terminal (7) on the 361 is a powered output. Power is
supplied to the
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).
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
Com
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 0
82 to the Com and
Boil terminals (12 and 13). The boiler sensor is used by the 361 to
measure the boiler temperature.
Mixing Sensor
Connect the two wires from the Mixing Sensor 0
82 to the Com and
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.
3
4
L
N
Sys
Pmp
5
6
N
120V (ac)
Power
L
N
System
pump
3
4
L
N
Power
Var
Pmp
7
8
N
L
120V (ac)
N
Variable speed
injection pump
9
10
T
T
T
T
Boiler
15 16
Com Out
or
Boiler supply
sensor
12 13
Com Boil
Boiler return
sensor
12
13
14
Mixing
sensor
Com
Mix
Boil
System
pump