tekmar 365 Mixing Control - Manual (Page 9)

Copyright © D 365 - 06/00 9 of 16
Powered input connections
If a 24Vac to 120Vac external heat demand signal is used, (zone valve end switches, etc.) connect
the wiring from the Heat Demand circuit to terminals
Heat Dem — Heat Dem (1 and 2). When 24Vac
to 120Vac is applied to these terminals, the control will respond to a call for heat from the system.
Do not apply power here!
Dem Dem
Heat
1 2
12 13
10K
Sen
2K
RTU
16
Sup
Sen
18
Com
–
Ret
Sen
11 10
+
4-20
14 15
UnO
Sw
Com
Sen
Com
Sen
17
Out
Sen
19
12 13
10K
Sen
2K
RTU
16
Out
Sen
19
Com
–
Ret
Sen
11 10
+
4-20
14 15
UnO
Sw
Com
Sen
Sup
Sen
18
Com
Sen
17
Sensor and unpowered input connections
Power should never be applied to these terminals. Damage to
the control will result.
Connect the two wires from the Outdoor Sensor 070 to terminals
Com Sen — Out Sen (17 and 19).
Connect the two wires from the Universal Sensor 071 – which
should be mounted on the system supply pipe – to the terminals
Com Sen — Sup Sen (17 and 18).
13
10K
Sen
2K
RTU
Com
Sen
16
Sup
Sen
17
Out
Sen
18 19 10
+
4-20
14 15
UnO
Sw
Com
Sen
12
Com
–
Ret
Sen
11
12 13
2K
RTU
Com
Sen
16
Sup
Sen
17
Out
Sen
18 19
Com
–
Ret
Sen
11 10
+
4-20 UnO
Sw
14
Com
Sen
10K
Sen
15
OR
12
10K
Sen
Sup
Sen
Out
Sen
18 19
Com
–
Ret
Sen
11 10
+
4-20
14 15
UnO
Sw
Com
Sen
2K
RTU
16
Com
Sen
17 13
12
10K
Sen
2K
RTU
Com
Sen
16
Sup
Sen
17
Out
Sen
18 19
Com
–
Ret
Sen
11 10
+
4-20
15 13 14
UnO
Sw
Com
Sen
Option: Boiler Return temperature sensor
(Must be ordered separately)
Connect the two wires from the Universal Sensor 071 to terminals
Com – — Ret Sen (11 and 12).
Option: Indoor temperature feedback sensor
(Select one option only)
(1) Connect the two wires from the Indoor Sensor 074 or a
tekmar 10K Zone Control to terminals Com Sen — 10K Sen
(14 and 15).
OR
(2) Connect the two wires from the tekmar 2K RTU or the tekmar
2K Zone Control type 240 to terminals 2K RTU – Com Sen
(16 and 17).
Option: Occupied/Unoccupied switch input
Connect the two wires from the Occupied/Unoccupied dry contact
switch, (tekmar Timer 030) to terminals
UnO Sen — Com Sen
(13 and 14).
Electrical connections to the terminal plugs of the type 365 control. Control relays are shown in "power down" condition.
Note: This is not a wiring Diagram
For a detailed wiring schematic of your specific application, refer to the Application Brochure A 365.
type 365
Do not apply
power here!
OR
Outdoor
Sensor
070
Supply
Sensor
071
12 13 14 15
UnO
Sw
Com
Sen
10K
Sen
2K
RTU
Com
Sen
16
Sup
Sen
17
Out
Sen Dem Dem
18 19
Com Ret
Sen
2K RTU
10K Indoor
Sensor or
Zone Control
(optional)
System Pump
Relay
closes to turn
on System Pump
Heat Power System
Pmp
12 A 10 A
N L Pmp Pmp
7 1 2 4 5 6 3
Boiler
8 9
Var
Heat Demand
Apply 24 or 120 Vac
signal when heat is
required from system
Boiler Relay
closes to turn
on boiler
Maximum 120 Vac
11 10
+
4-20
Unoccupied
Switch (optional)
to switch control to
Unoccupied mode
Return
Sensor
071
(Optional)
2.2 A
–
Variable
Speed
Pump
Output
4 to 20 mA
Output
Power Supply
120 Vac +/- 10%,
50/60Hz.
Required