Application Brochure

7 of 12
- Application
2 X Mixing Control 356
A 356-4
05/00
Copyright ©2000 A 356-4 05/00
Note:
This is only a concept drawing. The designer must determine whether this application will work in his system and must ensur
e 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
Outdoor
Sensor (S2) 070
Outdoor
Sensor (S5) 070
Mix 1 Mix 2
M
M
R1
Boiler Return
Sensor (S3)
071
Z3
T3
Z4
T4
356
P4
V2
V1
P2
P3
R2
Z1Z2
T1T2
P5
P1
Boiler Return
Sensor (S6) 071
Mix
Sensor
(S4) 071
Mix
Sensor
(S1) 071
see Essay E 021
see Essay E 021
M
M
Class II
Transformer
120 V (ac)
24 V (ac)
Mix 2Mix 1
Electrical
P1 = Boiler Pump
P2, P4 = Variable Speed Injection Pump
P3, P5 = Mixing System Pump
R1, R2 = Relay 003
S1, S4 = Mix Supply Sensor 071
S2, S5 = Outdoor Sensor 070
S3, S6 = Boiler Return Sensor 071
T1, ..., T4 = Thermostats
V1, V2 = Balancing Valve or Globe Valve
Z1, ..., Z4 = Zone Valve Motor End Switches
S2
S3
S1
Boiler
S5
S6
S4
356
5
7
9
8
6
T
5A
Boiler
R+
C-
Power
Do not apply power
2
Out
3
Sup
Com
14
Boil
2.4A
Z1
Z2
3
4
6
5
7
2
1
8
356
5
7
9
8
6
T
5A
Boiler
R+
C-
Power
Do not apply power
2
Out
3
Sup
Com
14
Boil
2.4A
P2
R1
P3
P1
R2
P5
P4
Zone Valve
Motor End
Switches
Zone Valve
Motor End
Switches
Z3
Z4
3
4
6
5
7
2
1
8
C
R
24 V (ac)
120 V (ac)
Class II
Transformer
L
N
356