Tekmar 361 Mixing Control Manual do Utilizador descarregar pdf (Página 11)

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 (

)

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 (

) 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 082 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 082 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.

Sys

Pmp

120V (ac)

Power

System

pump

Power

Var

Pmp

120V (ac)

Variable speed

injection pump

Boiler

Com

Out

Boiler supply

sensor

Com

Boil

Boiler return

sensor

Mixing

sensor

Com

Mix

Boil

System

pump

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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