User Guide

ManualsBrandsTekmar ManualsHeating SuppliesZone Control Valve - 4 Zones w/ Priority

D - 11/16

304V

11/16

Zoning

Replaces: 10/16

Zone Valve Control 304V

Installation & Operation Manual

• RoomResponse

signal

• Compatible with all 24 V (ac) thermostats

• Compatible with 2, 3 and 4-wire zone valves

• Unlimited zone expansion

• Zone priority

• Priority override

• Pump exercising

• Post purge

•

LED for each zone, priority, end switch and RoomResponse

• Away signal shared between thermostats

• Four ground screws

• Top, bottom and back conduit knockouts

• Fuses protect transformers and pumps

• Two spare fuses included

• CSA approved

Introduction

The Zone Valve Control 304V connects up to four thermostats and operates zone valves to provide heating to a zoned

hydronic heating system. The 304V operates a system pump whenever a zone valve opens. Zone 1 can operate either

a zone valve or a circulator to provide heat to an indirect domestic hot water tank with optional priority over zones

2 through 4. The 304V includes optional exercising to prevent circulator seizure when not in use, and optional post

purge operation of the domestic hot water tank to maximize energy savings. The 304V provides a RoomResponse

signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.

Call

Valve

Open

Zone Valve Control 304V

Four Zones with Priority

Power

Priority

System

Pump

Zone 1

Zone 2 Zone 3 Zone 4

RoomResponse

Features

Summary of content (12 pages)

PAGE 1
Installation & Operation Manual 304V_D Zone Valve Control 304V 11/16 Zoning Replaces: 10/16 Introduction The Zone Valve Control 304V connects up to four thermostats and operates zone valves to provide heating to a zoned hydronic heating system. The 304V operates a system pump whenever a zone valve opens. Zone 1 can operate either a zone valve or a circulator to provide heat to an indirect domestic hot water tank with optional priority over zones 2 through 4.
PAGE 2
Table of Contents Important Safety Information .............................................2 Installation .........................................................................3 Preparation .................................................................... 3 Location ......................................................................... 3 Installing the Enclosure ................................................. 3 Application 304V–1 ........................................................
PAGE 3
Radio Frequency Interference The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment Regulations.
PAGE 4
Application 304V–1 The Zone Valve Control 304V operates four heating zones. When the thermostat calls for heat, the zone valve opens, the system pump is turned on and the boiler is fired.
PAGE 5
Application 304V–2 The Zone Valve Control 304V operates a three heating zones and a domestic hot water tank. When a thermostat calls for heat, the zone valve opens and the system pump and the boiler turn on once the zone valve end switch closes. The domestic hot water tank is heated using a pump. When priority is selected, the heating zones are shut off while the hot water tank is heated.
PAGE 6
Application 304V–3 Two Zone Valve Control 304V operate seven heating zones and a domestic hot water tank. When a thermostat calls for heat, the zone valve opens. The hot water tank is heated using a pump when the tank aquastat calls for heat. The master control operates the system pump and the boiler when there is a call for heat on either the master or member control.
PAGE 7
User Interface - Indicator LED Power • On when 115 V (ac) is applied. • Off when power disconnected or transformer fuse is blown. Zone 1 Call • On when thermostat 1 calls for heat. • Off when thermostat 1 stops calling for heat. Priority • On when zone 1 has priority over zones 2 to 4. RoomResponseTM • On when modulating condensing boiler is operating below maximum setting. Zones 2 to 4 Call • On when the corresponding thermostat calls for heat. • Off during priority operation.
PAGE 8
Expansion Terminals Connect the five wires of the expansion bus from the master to the member controls. Terminal 70 80 Description A/tN4 Away signal connecting tekmar thermostats B RoomResponseTM signal from member controls C Power common D Demand signal. 0 Vdc = demand. 2 Vdc = no demand E Priority signal. 0 Vdc = priority.
PAGE 9
Aerco AM Series -------------------------------- – Camus Modulating MicoFlame ------------------ 22 23 + – 304V – + Aerco AM + 5 6 – + Camus Micoflame 304V • No changes to the boiler are required. • Change control to mode 6 in the control parameters. Bosch Greenstar ------------------------------- Heat Transfer Products Elite--------------------- – 9 10 + – 304V – + 16 17 + + 304V Bosch ICM – HTP Elite • Install the Bosch ICM as per the directions.
PAGE 10
Laars Mascot FT -------------------------------- – NTI Trinity FireTube ------------------------------ 16 17 + + – – Laars Mascot FT 304V X + X R CH1 + – 3 4 5 5 24Vac I/O 304V Sensor I/O • No changes to the boiler are required. NTI Trinity Fire Tube Lochinvar Knight -------------------------------- • Enter boiler password.
PAGE 11
Raypak MVB and XTherm ----------------------- Weil-McLain Evergreen -------------------------- – – + X + X – 304V 13 14 17 18 Raypak MVB or XTherm 304V • Set boiler PIM DIP switch 2 to Down. • Set boiler PIM DIP switch 5 to Up. + • • • • • • 5 6 – + Weil-McLain Evergreen P15 Use Local Priority 1 for DHW tank heating. Use Local Priority 2 for the RoomResponseTM signal. Set Local Priority 2 Supply Min to 60°F. Set Local Priority 2 Supply Max to 180°F.
PAGE 12
Technical Data Zone Valve Control 304V Four Zones with Priority Literature Control Packaged weight Dimensions Enclosure Approvals Ambient conditions Power supply Transformer Control load Fuses Zone valve outputs Zone valve end switch Pump relays Boiler XX end switch DHW end switch Mod boiler output 304V_C, 304V_D, 304V_J Microprocessor control. This is not a safety (limit) control. 5.0 lb.