Application Brochure

3 of 12 © 2009 A 374 - 03/09
Concept Drawing This is only a concept drawing, not an engineered drawing. It is not intended to describe a complete system, nor any particular system. It is up to the system designer to determine the necessary components for and configuration of the particular system being designed, including additional equipment, isolation relays (for loads greater than the control’s specified output ratings), and any safety devices which in the judgement of the designer are appropriate, in order to properly size, configure and design that system and to ensure compliance with building and safety code requirements.
tekmar Control Systems Ltd., Canada; tekmar Control Systems, Inc., U.S.A.; www.tekmarcontrols.com
Head Office: 5100 Silver Star Road, Vernon, B.C. Canada, V1B 3K4; [phone] Fax [phone]
- Application
Electrical
Essential Control Settings DHW MODE = 1 (no priority) 2 (with priority) MIX 1 MODE = 1 MIX 2 MODE = 1
A 374-1
03/09
A1 = DHW Aquastat P1 = Primary Pump P2 = Mix 1 System Pump P3 = Mix 2 System Pump P4 = Mix 1 Variable Speed Injection Pump P5 = Mix 2 Variable Speed Injection Pump P6 = DHW Pump S1 = Mix 1 Sensor 082 S2 = Mix 2 Sensor 082 S3 = Outdoor Sensor 070 S4 = Boiler Supply Sensor 082 Z1, Z2 = Mix 1 Zone Valve Z3, Z4 = Mix 2 Zone Valve
required
optional
C
24 V (ac)
R
N
115 V (ac)
Class 2
Transformer
L
Boiler
#1
Boiler
#2
S1
S2
P4 P5 A1P2
P6P1
P3
S4 S3
Z4
M
Z3
M
Z2
M
Z1
M
R
tekmar 500 Series Thermostats
C
Relay 1
R
tekmar 500 Series Thermostats
C
Relay 1
R
tekmar 500 Series Thermostats
C
Relay 1
R
tekmar 500 Series Thermostats
C
Relay 1
Do not apply power
13 14 16 17
Opn
1
5A 5A 5A 5A 5A 5A 5A 5A2.5A
2.5A
Cls1
Var1
Pwr
Mix
Opn
2
Cls2
Var2
UnO
Sw
Com Boil Out Com Mix1 Mix2 Mix1
P2 L N N
Prim
P1
Mix2
P3
Mix1 Dem
Com Dem
Mix2 Dem
Setp
Dem
DHW
Dem
Boil
Dem
Com Dem
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374
Power DHW
Pmp/Vlv
Stage 1 /
Boil Enbl.
Stage 2 /
Setp Enbl.
Boiler Sensor
Variable
Off
SupplyInstaller
Advanced
Setback
30% Enable
10% Enable
Return
Floating
Rotate