Wiring Brochure

ManualsBrandsTekmar ManualsHeating SuppliesZone Expansion Module - Six Zone Valves

W 325

12/08

Zone Expansion Module 325

- Wiring Brochure

Zone Group

89 90

Pmp C

tN4

Meets Class B:

Canadian ICES &

FCC Part 15

5 A (max)

Zone Expansion Module 325

tektra 998-01

Relay Rating: 115 V (ac) 5 A

24 V (ac) Fuse: T2.5 A 250 V

Power

Zone Group Pump C

H7001B

Zone C1

Zone C2

Zone C3

Zone C4

Zone C5

Zone C6

51 52 53 54 55 56 57 58 59 60 61 62

CCWWRRtN4 tN4 C WRtN4

tNt Zone C1 tNt Zone C2 tNt Zone C3

63 64 65 66

67 68 69 70 71 72 73 74

CCWWRRtN4 tN4 C WRtN4

tNt Zone C4 tNt Zone C5 tNt Zone C6

75 76

tN4C

Zn Grp C

On/Oﬀ

Zone Group

Pump C Delay

Zone Group

Pump C

Limited power available, see wiring brochure

77 78 79 80 81 82 83 84 85 86 87 88

Zone C1 Zone C2 Zone C3 Zone C4 Zone C5 Zone C6

Vlv

Made in Canada

Information

Brochure

Choose controls

to match

application

Application

Brochure

Design your

mechanical

applications

Rough-in

Wiring

Rough-in

wiring

instructions

Wiring

Brochure

Wiring and

installation of

specific control

Job

Record

Record settings &

wiring details for

future reference

Data

Brochure

Control settings

and sequence of

operation

Overview

tekmar wiring Enclosure (not included)

tekmar Zone Manager

The following wiring brochure describes how to wire the tekmar Zone Expansion Module 325. The 325 is to be installed

in an enclosure together with a tekmar Zone Manager. The 325 controls up to six tekmarNet

4 (tN4) thermostats, six

24 V (ac) zone valves, and one 115 V (ac) Zone Group Pump. The wiring of tekmarNet

4 (tN4) components is simple

and cost effective.

Summary of content (12 pages)

PAGE 1
- Wiring Brochure W 325 Zone Expansion Module 325 1 Information Brochure 2 Application Brochure Choose controls to match application 3 Design your mechanical applications 12/08 Rough-in Wiring 4 5 Wiring Brochure Wiring and installation of specific control Rough-in wiring instructions Data Brochure Control settings and sequence of operation 6 Job Record Record settings & wiring details for future reference Overview The following wiring brochure describes how to wire the tekmar Zone Expansi
PAGE 2
Table of Contents Wiring Symbols & Definitions ........................................2 Adding Extra VA .............................................................8 Module Installation .........................................................3 Troubleshooting the Control ......................................9-10 Electrical Drawings ......................................................3-5 Technical Data .............................................................. 12 Wiring the Control ..........
PAGE 3
Module Installation Install the Zone Expansion Module 325 in the left side of a tekmarNet®4 (tN4) wiring enclosure. The enclosure comes with a Zone Manager pre-installed in the right side. Review the figure below to understand the installation of the 325: To Install the 325 1. Remove the front cover of the wiring enclosure by removing the two screws. 2. Remove the left side blank by removing the center screw holding the blank and the Zone Manager in place. Make sure the Zone Manager stays in place. 3.
PAGE 4
Electrical Application 325 E1 Description: tekmarNet®4 Zone Expansion Module 325, six tekmarNet®4 Thermostats, six zone valves, zone group pump.
PAGE 5
Electrical Application 325 E2 Description: tekmarNet®4 Zone Expansion Module 325, six tekmarNet®4 Thermostats, six zone valves.
PAGE 6
Wiring the Control Terminals 51-90 This section explains how to wire individual devices to the Zone Expansion Module 325. For step by step wiring refer to the terminal number on the right of the page. • Before wiring ensure all power is turned off and take all necessary precautions. • Install the supplied wiring compartment barriers by sliding them into the grooves provided to isolate the low and high voltage wiring. • Strip all wiring to a length of 3/8 in. or 10 mm for all terminals.
PAGE 7
Wiring the Zone Group Pump Terminals 89-90 Zone Expansion Module 325 The 325 operates one Zone Group Pump. • If a Zone Group Pump C is used, the pump is wired directly to terminals 89 and 90. • The pump’s ground wire is connected to the ground screw provided in the wiring chamber. 89 90 Zone Group Pmp C N Pump Note: For pumps larger than the control’s rated capacity, an external isolation relay must be used.
PAGE 8
Adding Extra VA Wiring an External Transformer Terminal 72 Use the supplied Job Records to determine if an external 24 V (ac) transformer is required. 4. For each of the selected zones, connect the thermostat’s R wire to the external transformer’s 24 V (ac) R output. (Do not use the 325’s R terminals) If the combined total 24 V (ac) load exceeds 53 VA, an external NEC / CEC Class 2 transformer is required. 5.
PAGE 9
Troubleshooting the Control General The following tests are to be performed using standard testing practices and procedures and should only be carried out by properly trained and experienced persons. Test Meter ### Control Terminals A good quality electrical test meter, capable of reading from at least 0-300 V (ac), 0-30 V (dc), 0-2,000,000 Ohms, and testing for continuity is essential to properly test the wiring and sensors.
PAGE 10
Testing the Zone Valve Outputs Terminals 77-88 1. Remove the front cover from the control. 3. If power is not present: 2. Use an electrical test meter to measure the (ac) voltage between the C and the Vlv terminals for each zone valve output. • Check the power supply to the Zone Manager and the field replaceable fuse for the transformer on the Zone Expansion Module. • If the power light is amber instead of green the transformer fuse is blown.
PAGE 12
Technical Data Zone Expansion Module 325; Six Zone Valves Control Microprocessor PID control; This is not a safety (limit) control Packaged weight 1.15 lb.