ZR4 Hydronic Zone Relay Controller
Features and Specifications
ZR series zone relays are designed to provide simplified installation and reliable long term operation of line voltage zone circulators when used in residential and commercial atmospheric and condensing boiler applications.
Up to four zone inputs are provided for zone call signals from devices such as thermostats, aquastats, etc.
Setup is easily accomplished using five selector switches to configure priority and primary zones, exercising and multiple controller configurations. Installation and maintenance access to wiring and replaceable fuses is provided by simply removing two front facing screws. Individual fusing is provided for the control circuit and for each zone circulator output.
The circuit board is also field replaceable without removal of the enclosure back plate. Wire terminals are also removable and replaceable.
Features
Specifications
Certifications
Features
- Galvalume Steel + Powder Coated Aluminum Enclosure
- LED Power Indicator
- 4 x Zone Operation status LED's
- 2 x Boiler Call (T/T) status LED's
- 2 x Feature LED's for Priority and Exercise function status
- 5 x 3 Position selector switches for configuration of special functions
- Unlimited zone expansion with multiple ZR4 controllers using MULTILINK - 3 wire bus.
- Boiler Call (T/T) outputs feature high reliability solid state relays
- Zone inputs rated from 5VDC to 24VAC voltage range
- Zone output relays rated up to 5A each @ 120 - 250VAC or 1/4HP each @ 120 - 250VAC
- Transformer-less design with less than 1 watt standby power.
- Terminal Blocks are user replaceable (Standard Model)
- User replaceable fuses. 4A maximum per zone, 2.5A maximum for control circuit
- 3 Year Limited Warranty
Specifications
- 100 - 250 VAC 50/60 Hz. supply
- CLASS II - 5VDC On Board Power¹
- Power Consumption : 120ma
- Dimensions : 9.00” x 8.00” x 2.50”
- MultiLink : Yes
- Zone Inputs : 1, 2, 3 or 4
- Zone Outputs : 1, 2, 3 or 4
- Boiler T/T Outputs : 1 or 2
- Max Zone Amps : 3A
- Max Board Amps : 12A
- Mounting : Wall / Chassis
- IP Rating : NEMA Type 1
- ROHS Compliant : YES
- Enclosure : Galvanized Steel / AL²
- Terminals : #22 - #14 Gauge
- Knockouts : 10 x 1/2” (22mm)
- Fuses : Type TE5 User replaceable
4 x 3.0A Output (Time Delay)
1 x 1.0A Control (Fast Acting) - Operating Conditions :
Temp : 0C - 40C (32F - 104F)
Humidity³ : 85% @ 25C (77F)
1. 5VDC class II power supply for logic, input signal and limited external supply use. External devices shall not exceed 250mA(milliamps) in total current draw.
2. Standard White Polyester Powder Coat over T-6061 Aluminum enclosure cover. Galvalume coated steel enclosure base.
3. Humidity = Non-Condensing
*Specifications as of 04/01/2022, and are subject to change without notice.
Certifications
- Installation altitudes up to 2000 meters / 6561 feet above sea level
- Indoor installations with ambient temperatures from 0 to 40°C / -32 to 104°F
- Not for use in hazardous locations
- Type 3 (ISO / IEC Guide 67 clauses 6.2 and 6.3)
- CAN/CSA E60730-2-9:18 and UL 60730-2-9 Ed:4.
- Controller shall be installed as per National Electrical Code (USA), Canadian Electrical Code (Canada)
- Controller shall be installed as per National Fire Protection Association standard 70
- cINTLus Listed for USA and Canada by International Testing Laboratory Inc. (Report # INTL-202221-C01 Rev0)
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