- Data Brochure
Zone Control 368
Occupied
Power
UnOccupied
Heat Required
Optimum Start / Stop
24 hr. Timer
Timer Active
System Pump
70°F
(21°C)
12 hrs.
1
Zone 1 Lo stage
• Dial the desired duration
6
18
of the UnOccupied period.
2
Zone 2 Hi stage
• Press start button at the time of day
you want the UnOcc. period to begin.
Timer Active light turns on.
3
Zone 3 Lo stage
0
24
40
100
UnOccupied
(4)
(38)
4
Zone 4 Hi stage
Duration
UnOccupied
Start
0 = always Occupied
24 = always UnOccupied
R
Zone Control 368
N R T L / C
One & Two Stage
LR 58223
Output
System
Pump
Input
120 V (ac)
Power
Supply
70
70
Input
tekmar RTUs
or Indoor
Sensors
70
The Zone Control 368 is a microprocessor-based energy management control that uses PID
logic to control the temperature in up to 4 heating zones. Multiple zone controls can be
connected together for additional zones of heating. Either single stage or two stage zones can
be provided by the control. The 368 is primarily designed for use with the tekmar House
Controls. When connected to a House Control, the 368 provides indoor temperature feedback
that adjusts the supply water temperature in order to satisfy the zone with the highest heat
load. The 368 also coordinates the zoning operation in order to minimize boiler short cycling
and allow boiler purging between cycles. The 368 has a built in night setback timer and an
Optimum Start / Stop feature that allows the control to reheat the zones before the end of the
setback period.
Control Strategy . . . . . . . . . . . . . . . . pg. 2
Sequence of Operation . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . .
Settings . . . . . . . . . . . . . . . . . . . . . . . pg. 8
Occupied
UnOccupied
Optimum Start / Stop
24 hr. Timer
Timer Active
12 hrs.
• Dial the desired duration of the
6
18
UnOccupied period.
• Press start button at the time of day
you want the UnOcc. period to begin.
Timer Active light turns on.
0
24
40
UnOccupied
(4)
Duration
Start
0 = always Occupied
24 = always UnOccupied
Zone Control 368
One & Two Stage
Do not apply power here
1
2
3
4
5
6
System
Power
Com
RTU
RTU
Pmp
Pmp
N
L
Sen
1
T I M E
PRGM
1
2
AMPM
UNOCC
OVR
S
M
T
W T F
S
70
Input
tekmar
Timer
Power
Heat Required
System Pump
70°F
(21°C)
1
Zone 1 / Lo stage
2
Zone 2 / Hi stage
3
Zone 3 / Lo stage
100
(38)
4
Zone 4 / Hi stage
UnOccupied
Made in Canada by
tekmar Control Systems Ltd.
R
Power
N R T L / C
Pump Relay
LR 58223
Zone Relays
Caution: Signal wiring must be rated at least 300V
7
8
9 10 11
12 13 14
15
Com
RTU
RTU
UnO
Zo
Com
Zo
Com
2
Sen
3
4
Sw
Out
Sen
In
1-2
LR 58233 E150539
Output
tekmar Reset
Control
Testing the Control . . . pg. 9
pg. 3
Error Messages . . . . . . pg. 11
pg. 6
Technical Data . . . . . . . pg. 12
Limited Warranty . . . . . pg. 12
Thermal Motor
Optimum Start
Occ/UnOcc
Zone
1
2
3
4
Occ. only
Off
T est
Sep 96
31000266
120 V 50/60 Hz 5 VA
120 V (ac) 6 A 1/3 hp, pilot duty 240 VA
120 V (ac) 6 A 1/3 hp, pilot duty 240 VA
16
17 18
19
20
Com
1
2
3-4
3
4
LR 58233 E150539
Input
tekmar Zone
Zone Valves or
Control
D 368
09/96
M
M
M
Outputs
Zone Valves or
Zone Pumps
M
Outputs
Zone Pumps
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