Network Thermostat X7-Series Thermostat Installation Guide

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FRESH AIR DAMPER OPERATION  

(K/H/D OR K2)  

When set to 'Damper', the relay will control a 2-position (power open, spring  

return) damper for fresh air ventilation.  

K/H/D RELAY - GENERAL  

The K/H/D relay can be configured to function as any one of the  

following controls:  

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Humidification; with or without independent equipment  

Dehumidification; with or without independent equipment  

Fresh Air Damper  

The ‘When Occupied’ setting will open the damper and turn on the fan  

during occupied schedule periods from the thermostat’s normal 7-day  

schedules.  

NetX™ X7-Series  

Thermostat  

The ‘x min/hr’ setting will open the damper and turn on the fan for the set  

number of minutes selected.  

Manual Relay Operation  

K/H/D & K2 INSTALLATION ADDENDUM  

Programmable Schedule *  

Outdoor Temperature and Humidity Limits allow the setting of the  

boundaries for energizing the damper, between 120°F (49°C) and -40°F (-  

40°C), and 0% RH to 100% RH.  

Indoor Air Quality Control *  

* Can be configured for use on K/H/D or K2, but not both  

SCHEDULE RELAY OPERATION  

(K/H/D OR K2)  

When set to 'Schedule', the relay can be configured to turn on, off, or pulse  

up to 4 times per day, 7 days a week. The pulsed on option can be  

configured from 0.2sec to 2.0sec in 0.1sec increments.  

K2 RELAY - GENERAL  

The K2 relay can be configured to function as any one of the  

following controls:  

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Fresh Air Damper  

Manual Relay Operation  

Programmable Schedule *  

Indoor Air Quality Control *  

MANUAL RELAY OPERATION  

(K/H/D AND K2)  

When set to 'Manual', the relay can turned on or off using any of the remote  

connection options.  

* Can be configured for use on K/H/D or K2, but not both  

HUMIDITY OPERATION  

(K/H/D RELAY ONLY)  

Humidification:  

When set to 'Humidification', this feature allows selection of a  

humidification call only when the heat is running, or independent of a  

heating call.  

INDOOR AIR QUALITY (IAQ) OPERATION  

(K/H/D OR K2)  

When set to 'IAQ', the relay can control multiple types of IAQ equipment,  

with either manual or automatic operation.  

WWW.NETWORKTHERMOSTAT.COM  

TABLE OF CONTENTS  

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Before You Start  

Introduction  

K/H/D Relay - General  

K2 Relay - General  

Humidity Operation  

Fresh Air Damper Operation  

Programmable Schedule Operation  

Manual Relay Operation  

Indoor Air Quality (IAQ) Operation  

Accessory Port  

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Integrated HVAC - Occupied  

Use when IAQ equipment is located inside the HVAC equipment or  

ductwork. This setting will turn on the IAQ equipment and the HVAC fan  

during occupied schedule periods from the thermostat’s normal 7-day  

schedules.  

The relay energizes a humidification call when the indoor relative  

humidity drops below the value selected, with programmable variance of  

+/- 2%, 3% or 5% RH.  

Stand Alone - Occupied  

Example: With Humidify at 35% and a Variance of 5%, a call for  

humidification would start at 30% and turn off when the humidity level  

reached 40%  

Use when IAQ equipment is located inside the HVAC equipment or  

ductwork. This setting will turn on the IAQ equipment during occupied  

schedule periods from the thermostat’s normal 7-day schedules.  

Dehumidification:  

Integrated HVAC - Manual  

When set to 'Dehumidification', this feature allows selection of a  

dehumidification call only when the cooling is running, or independent of  

a cooling call.  

Use when IAQ equipment is located inside the HVAC equipment or  

ductwork. This setting will allow the manual turning on or off of the IAQ  

equipment and the HVAC fan. Use this setting for extended occupied or  

unoccupied periods.  

BEFORE YOU START  

Please read the entire addendum. The thermostat will need  

to be correctly wired and configured for proper operation.  

Basic HVAC configuration can be performed from the  

thermostat touchscreen and advanced settings can be  

accessed on the embedded web pages and/or the Internet.  

When "With Cooling Only" is selected, and there is no dedicated  

dehumidification function integrated within the equipment, cooling will  

be initiated and the cooling set point will automatically be lowered by 2  

degrees from the scheduled cooling set point to allow increased  

equipment run time and decreased space humidity levels.  

Stand Alone - Manual  

Use when IAQ equipment is located inside the HVAC equipment or  

ductwork. This setting will allow the manual turning on or off of the IAQ  

equipment. Use this setting for extended occupied or unoccupied periods  

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INTRODUCTION  

The relay energizes a dehumidification call when the indoor relative  

humidity rises above the value selected, with a programmable variance of  

+/- 2%, 3% or 5% RH  

This addendum addresses the special controls available using  

the K/H/D and K2 terminals on the X7 Series thermostats.  

This includes control of humidity, fresh air damper, 7-day / 4-  

event relay scheduling, manual relay operation and Indoor Air  

Quality (IAQ) Control  

ACCESSORY PORT  

Example: With Humidify at 55% and a Variance of 5%, a call for  

dehumidification would start at 60% and turn off when the humidity level  

drops to 50%.  

The accessory port allows connection of various NetX options,  

including the NT-MOD-ULE wireless sensor coordinator, the NT-  

CO2 carbon dioxide sensor, or other future accessories.  

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Page 1  

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Name	Network Thermostat X7-Series Thermostat Installation Guide
Make	Network Thermostat
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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Network Thermostat

Network Thermostat X7-Series Thermostat Installation Guide Overview

Summary of Contents

• Page 1: Fresh air damper operation controls a 2-position damper for ventilation. The K/H/D relay can be configured for various controls including humidification and dehumidification. The 'When Occupied' setting opens the damper and activates the fan during scheduled periods. Outdoor temperature and humidity limits set boundaries for energizing the damper. The relay can be configured to turn on, off, or pulse multiple times per day. The K2 relay functions similarly to the K/H/D relay with various control options. Humidity operation allows for humidification calls based on heating status. Indoor air quality operation controls multiple types of IAQ equipment. The accessory port connects various NetX options for enhanced functionality. This addendum details special controls available using K/H/D and K2 terminals on X7 Series thermostats.