Tekmar Universal Reset Module 422 Wiring Brochure page 5

Electrical Application
Description: Floating Action Mixing, DHW, Setpoint, Single 0-10 V (dc) Modulating Boiler, External tN4 = Mix 2 Temperature.
*May be required for modulating boiler
Boiler DHW
Call
Signal *
Boiler DHW
Demand
51 52 53 54 55
/
tN4 Boiler / Mix 2
See
Boil Sens Sup / Ret
D 422
Boiler On-Off / Mod
Off / tekmar Stager
Off / Flushing
Meets Class B: Canadian
ICES & FCC Part 15
Made in Canada
Test
Var. Pump Fuse
T2.5 A 250 V
To ground
External
Setpoint tN4 Control Floating Action
Call Mix 2 Temp. 24 V (ac) Motor
C tN4
Setpoint C R C2 tN4
Demand 24 V (ac) Boil/Mix2
56 57 58 59 60
Output 1 VA
Menu
Item
2.5 A
71 72 73 74
DHW Variable Speed
Pump N Pump N
Pump
Refer to Job Record for Maximum Allowable Loads
Mixing Valve 0-10 V (dc)
Modulating
Boiler
Com Opn Cls
C
C Opn Cls
Floating Output:
R R Mod (dc)
24 V (ac) 8 VA
61 62 63 64
Powered Output
Universal Reset Module 422
75
Primary
Pump
5 of 12
Boiler Mix Outdoor
Sensor Sensor Sensor
082 082 070
24 V (ac) R & C
tN4 = Mix 1 temp.
+ – Com Boil Mix Com Out
65 66 67 68 69 70
Do not apply power
tN4
Connections
tektra 991-03
Var. Pump: 115 V (ac) 2.5 A
Demands: 20 - 260 V (ac)
Relay Rating: 115 V (ac) 5 A
10 A
max.
76 77 78
Mix Sys P1
N Pump N
115 V (ac) L & N
Pump Pump
© 2009
422 E2
from Zone
Manager
W 422 - 03/09