Tekmar Universal Reset Module 422 Wiring Brochure

© 2009 W 422 - 03/09 6 of 12
External
tN4 Control
Boiler Temp.
CtN4
Mixing Valve
Floating Action
24 V (ac) Motor
Com
Opn Cls
C
0-10 V (dc)
Signal to
tekmar
Stager*
Mix
Sensor
082
Boiler
Sensor
082
Outdoor
Sensor
070
DHW
Call
Setpoint
Call
*Refer to boiler staging control info
To ground
Pump
Pump Pump
Refer to Job Record for Maximum Allowable Loads
Connections
from Zone
Manager
24 V (ac) R & C
tN4 = Mix 1 temp.
115 V (ac) L & N
51
52 53 54 55 56 57 58 59 60 61 62 63 64 65
Boiler DHW Setpoint C C2 tN4 C Com Boil Mix Com Out+Opn Cls
Demand Demand 24 V (ac) Boil/Mix2 R R Mod (dc)
R
66 67 68 69 70
–
Primary Mix Sys P1
10 A
max.
75 76 77 78
NN
DHW Variable Speed
71 72 73 74
Pump Pump
N
Pump NPump
tN4
H7008B
tN4 Boiler / Mix 2
Boil Sens Sup / Ret
Boiler On-Off / Mod
Off / tekmar Stager
Off / Flushing
Powered OutputOutput 1 VA
Floating Output:
24 V (ac) 8 VA
Made in Canada
Meets Class B: Canadian
ICES & FCC Part 15
Test
Var. Pump Fuse
T2.5 A 250 V
Universal Reset Module 422
Item
Menu
tektra 991-03
Var. Pump: 115 V (ac) 2.5 A
Demands: 20 - 260 V (ac)
Relay Rating: 115 V (ac) 5 A
/
Do not apply power
2.5 A
See
D
422
Electrical Application 422 E3
Description: Floating Action Mixing, DHW, Setpoint, Multi-stage Boiler Control, External tN4 = Boiler Temperature.

Tekmar Universal Reset Module 422 Specifications

General

Brand	Tekmar
Model	Universal Reset Module 422
Category	Control Unit
Language	English