Honeywell Single Stage Heat Pump ProgrammableCommercial... Bedienungsanleitung

® U.S. Registered Trademark

Single Stage Heat Pump Programmable

Commercial Thermostat

GUIDE SPECIFICATION

1.0 GENERAL

1.1 Overview

The contractor shall furnish, install, and place in operating condition an HVAC control system described herein.

All units shall be located in accordance with the plans.

1.2 Type of System

1.2.1 System Requirements

a. Controls one heating and one cooling stages for heat pump applications.

b. Permit seven day programming.

c. Provide two occupied and two unoccupied periods per day.

d. Offer automatic heat/cool changeover with 2°F minimum deadband.

e. Provide override capability for a three hour period.

f. Include a comfort adjust feature to modify setpoints for a three hour period.

g. Provide Proportional plus Integral (P + I) temperature control.

h. Permit automatic or manual changeover between heating and cooling setpoints.

i. Display room temperature in °F or °C.

j. Display time in 12 or 24 hour clock format.

1.2.2 System Components

a. Seven day programmable thermostat.

b. Wallplate.

1.3 Codes and Standards

1.3.1 The system shall comply with applicable provisions of ASHRAE 90-75.

1.3.2 These specifications are based on equipment from Honeywell to set a standard for design and quality.

1.4 Wiring

1.4.1 All wiring meets National Electrical Codes and local electrical codes.

1.5 Testing Guarantee Service

1.5.1 Prior to installation, the contractor shall provide copies of submittals.

1.5.2 The contractor is responsible for assuring that conduit and wire quantity, size, and type are suitable for

the equipment supplied.

1.5.3 Upon completion, the contractor shall conduct a total system test for the owner and engineer.

1.5.4 All components, parts, and assemblies supplied by the manufacturer shall be guaranteed against

defects in materials and workmanship for 12 months. Warranty service shall be performed by the

contractor.

SINGLE STAGE HEAT PUMP PROGRAMMABLE COMMERCIAL THERMOSTAT

63-4361 2

2.0 SEQUENCE OF OPERATIONS

The heating and cooling setpoints shall be individually adjustable for both the occupied and unoccupied periods. The

thermostat shall have a minimum deadband of 2°F (no mechanical heating or cooling shall operate within this

deadband). Space temperature deviation above the cooling setpoint or below the heating setpoint shall generate a

demand signal to control the system as follows.

2.1 Heating

2.1.1 The thermostat shall control the heating output based on the demand signal communicated from the

thermostat program, taking into account both space temperature deviation (proportional error) and the

duration of that temperature deviation (integral error).

2.1.2 The thermostat shall energize heating equipment when space temperature falls below heating

setpoint.

2.2 Cooling

2.2.1 The thermostat shall control the cooling output based on the demand signal communicated from the

thermostat program, taking into account both space temperature deviation (proportional error) and the

duration of that temperature deviation (integral error).

2.2.2 The thermostat shall energize cooling equipment when space temperature exceeds cooling setpoint.

2.3 Heating Setback and Cooling Setup

Initiation of heating setback or cooling setup for each of 7 days shall be provided by a programmed time

schedule manually entered into the thermostat. When all or a portion of a manually programmed schedule is

unavailable, the thermostat shall control to the default program as follows:

Table of Default Program

Occupied Unoccupied

Heating Setpoints 70°F (21°C) 55°F (13°C)

Cooling Setpoints 78°F (26°C) 90°F (32°C)

2.4 Setpoint Recovery from Unoccupied to Occupied

The thermostat shall employ Intelligent Recovery™. This shall select the optimum time to begin building warm

up or cool down based on setpoints and occupied program as follows:

2.4.1 Heating: 5°F per hour.

2.4.2 Cooling: 5°F per hour.

2.5 Fan Operation

2.5.1 Fan operation shall be energized with calls for cooling and calls for heating (optional).

2.6 Heating and Cooling Operation Minimum On and Off Times

The thermostat shall incorporate a program to maintain minimum-stage operation in both the heating and

cooling:

2.6.1 Cooling: 2 minutes on and 4 minutes off.

2.6.2 Heating: 2 minutes on and 4 minutes off.

2.7 Power Interruption

The system shall cycle off and provide timed restaging of heating or cooling equipment upon restoration of

power. The restaging operation shall occur according to minimum stage operation times incorporated in the

thermostat. A power interruption is annunciated by a blank LCD display.

2.7.1 During a power interruption less than 2 hours, the thermostat retains all programmed occupied and

unoccupied start times and temperatures as well as the present time and day.

SINGLE STAGE HEAT PUMP PROGRAMMABLE COMMERCIAL THERMOSTAT

3 63-4361

2.7.2 During a power interruption greater than 2 hours, the thermostat retains all programmed occupied and

unoccupied start times and temperatures. Only the present time and day will need to be

reprogrammed.

2.8 Calibration

2.8.1 No calibration and no adjustment shall be required for mixed air temperature, throttling range, reset

ratio, band width, or discharge air temperature.

2.8.2 Temperature setting displayed on thermostat shall be adjustable within ±3°F of measured room

temperature (optional).

2.9 Security

Two levels of security shall exist:

2.9.1 A keypad lockout switch located on the back of the thermostat shall allow for three types of keypad

lockout.

a. Lock out all keys on the thermostat.

b. Lock out all keys on the thermostat except System and Fan settings, temporary setpoint

adjustments, and clock and day adjustments.

c. Lock out thermostat Installer Setup only.

2.9.2 Thermostat shall allow for door to be locked by use of two Allen head screws to lock the cover and not

allow access to the keypad.

2.10 Overrides

Temperature setpoints can be overridden in three ways:

2.10.1 Thermostat shall allow for a 3 hour timed override from unoccupied setpoint to occupied setpoint from

the thermostat keypad.

2.10.2 Thermostat shall allow for a 3 hour timed adjustment of the occupied setpoint from the thermostat

keypad.

2.10.3 Thermostat shall allow for a continuous override to the unoccupied setpoint from the thermostat

keypad.

3.0 MAJOR EQUIPMENT

Model

Number Description Features

T7200E2005 Commercial programmable

thermostat, taupe color. • 7-day programming

• 2 occupied and 2 unoccupied periods per day

• System and fan setting key set to AUTO only

• Wallplate included

4.0 OPTIONS

4.1 System Accessories

4.1.1 T675A—Remote Bulb Temperature Control, low ambient compressor lockout.

4.1.2 R8222—Switching Relay.

4.1.3 W950—Status Panels.

Home and Building Control Home and Building Control Helping You Control Your World®

Honeywell Inc. Honeywell Limited-Honeywell Limitée

Honeywell Plaza 155 Gordon Baker Road

P. O. Box 524 North York, Ontario

Minneapolis, MN 55408-0524 M2H 2C9

63-4361 J.A. 2-97

Printed in U.S.A. on recycled

paper containing at least 10%

post-consumer paper fibers.

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