Model 600 Lead/Lag Controller

Replace Old Antiquated or Obsolete Control Systems with an Intelligent Controller that Provides Remote Communication.

Quest's MODEL 600 Lead/Lag Controller has an iOS Bluetooth App

The Model 600 Lead/Lag controller provides the best low-cost HVAC automation solution for your critical facility. Replace Old Antiquated or Obsolete Control Systems with an Intelligent Controller that Provides Remote Communication.

The 600 outperforms comparable devices through its rugged design, intuitive display/keypad, ease of set-up, and Quest’s patented economizer control algorithm.

This comprehensive HVAC Control System meets your needs by providing a comprehensive monitoring and control system for MULTIPLE HVAC units in your Telecom or Broadband facility. The Model 600 reduces costs and gives you the confidence that your critical facility is operating at peak performance. The Model 600 has the flexibility to handle wall packs, rooftops and split systems plus support for single, dual stage systems and heat pumps with unmatched dependability.

Features

  • Can be configured to control most HVAC systems such as single stage, two stage or heat pump systems

  • Designed to work with existing HVAC economizer control modules using Quest’s patented Economizer control algorithm

  • Powered from both HVAC 24VAC transformers

  • Additional 24 or 48VDC power source supported

  • Networkable to the ESB2 or any Modbus RTU poller

  • Works in standalone mode if communications are lost

  • LCD display for current operating mode, alarms and temperature readings

  • Five button keypad for navigation to other status screens plus Comfort Mode and Lead Switch button

  • Bluetooth enabled to communicate with mobile app

  • Default settings and configuration are settable through password protected screens

  • All settings can be modified remotely via Modbus RTU

  • Supports two zone temperature sensors, an outside air sensor, and an optional humidity sensor

  • Calculates controlling temperature using either the average or high of the zone sensors

  • Outside air sensor allows standalone, optimal economizer control

Connect several Model 600 HVAC controllers to the TELSEC ESB2 system.
Network multiple MODEL 600 HVAC Controllers to the TELSEC ESB2

Setpoints

The Model 600 setpoints are field changeable via password.

Example Settings
Value
Standalone mode - cool 1 on76
Standalone mode - cool 2 on78
Standalone mode - All cooling off74
Standalone mode - heat 1 on55
Standalone mode - heat 2 on53
Standalone mode - All heating off60
Standalone mode - fan operationAuto
Network mode - cool 1 on78
Network mode - cool 2 on80
Network mode - All cooling off74
Network mode - heat 1 on50
Network mode - heat 2 on48
Network mode - All heating off
53
Network mode - fan operationOn

Applications

  • Utilities/Telecommunication/Cable & Broadband – Remote Cabinets & Shelters
  • Data/Switching/Computer Centers/COs/Headends & Hubs

Specifications

Part Number
151112

Mounting
Wall mount

Enclosure
Color: Grey
Material: Polycarbonate with knockouts on all sides Inputs

Inputs
Digital Inputs: (9) dry contact closures
Analog Inputs: Temperature sensors (3) Thermistors sensor ± 1°F (0.5°C) 4-20mA Input (1) – Relative Humidity Sensor

Outputs
Control Digital Outputs: (12) 30V AC max, 1A continuous, 3A in-rush
Alarm Outputs: (6) Form C dry contracts. Supports 48VDC @ 0.5A

Power
24VAC from both HVAC units and 24/48VDC simultaneously

LCD Display
Type: Backlit LCD display
Display Area: 2 rows of 16 characters each

Keypad
Four button directional arrows, enter button plus Comfort Mode and Lead Switch

Communication
RS485 Modbus RTU, Bluetooth

Environmental
Operating Temperature: 0°C to 50°C; 32°F to 122°F
Storage Temperature: -30°C to 50°C; -22°F to 122°F
Relative Humidity: 0 to 95% non-condensing

Dimensions
7.09”W x 10”H x 2.8”D (180 x 254 x 71 mm)

Weight
2.2 lb (1 kg)

Warranty
1 year 

Inquire Now

Quest-Controls-T-stat-Comparison-Matrix-thumbnail

T-Stat Product Matrix in PDF

Applications for the Model 600

Large Facility:
Data Center
Central Office
Switching Center
Headend

Medium Facility:
CEV/CEMH
WIC
HUT
CUE
CEC
Fiber Hub

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