Carrier AQUAZONE 50QE900-250FS- User Manual
Carrier AQUAZONE 50QE900-250FS– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Fig. 1 — Thermostat Mounting
- Page 3 – Turn on power to unit. The thermostat will receive power
- Page 4 – Install Thermostat (Without Junction Box); Fig. 6 — Cutout Template; Fig. 7 — Installation on Paneling
- Page 5 – Set Clock —; The Set Clock function allows the user to; Configure Advanced Setup —; If Auto is selected, the fan will run only during heating or; Table 2 — Advanced Setup Configuration
- Page 6 – Install Accessories —; The following accessories can; Program Thermostat Schedules —; Enter Programming mode by pressing and holding the; Fig. 9 — Setting Occupied 1 Set Points
- Page 9 – The thermostat is unlocked by performing the same proce-; Dry Contact Switch/External Control —; When using the auxiliary input or controlling multiple; Fig. 12 — Typical Dry Contact Switch Wiring
- Page 10 – TROUBLESHOOTING; Table 4 — Thermostat Troubleshooting
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 535-00106
Printed in U.S.A.
Form 50QE-5SI
Pg 1
6-03
Replaces: New
Book 1
4
Tab
5a
5a
Installation and Operating Instructions
Par t Number 50QE900-250FS
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . 1
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Select Thermostat Location
. . . . . . . . . . . . . . . . . . . . . . 2
Install Thermostat (With Junction Box)
. . . . . . . . . . . 2
Install Thermostat (Without Junction Box)
. . . . . . . 4
Set Clock
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Configure Advanced Setup
. . . . . . . . . . . . . . . . . . . . . . . 5
Install Accessories
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Program Thermostat Schedules
. . . . . . . . . . . . . . . . . . 6
Factory Defaults
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Calibrate Sensor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Check Thermostat Operation
. . . . . . . . . . . . . . . . . . . . . 8
Final Checklist
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Auto-Changeover
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Two-Stage Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Clock Backup
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fan Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Emergency Heat
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Holiday Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Temperature Sensor
. . . . . . . . . . . . . . . . . . . . . 8
Keypad Lock
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dry Contact Switch/External Control
. . . . . . . . . . . . . 9
10-Watt Resistor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Outside Temperature Sensor (Optional)
. . . . . . . . . . 9
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions carefully. Fol-
low all local electrical codes during installation. All wiring
must conform to local and national electrical codes. Improper
wiring or installation may damage thermostat.
Recognize safety information. This is the safety alert sym-
bol
. When the safety alert symbol is present on equipment
or in the instruction manual, be alert to the potential for person-
al injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety alert symbol.
DANGER identifies the most serious hazards which will result
in severe personal injury or death. WARNING signifies a haz-
ard which could result in personal injury or death. CAUTION
is used to identify unsafe practices which would result in minor
personal injury or property damage.
GENERAL
The commercial, 7-day, programmable thermostats are
wall-mounted, low-voltage thermostats which maintain room
temperature by controlling the operation of an HVAC (heating,
cooling and ventilation) system. Separate heating and cooling
set points and auto-changeover capability allow 4 different pro-
gramming time periods for energy savings.
All thermostats allow up to 4 time/temperature settings to
be programmed per 24-hour period. Each thermostat stores
programs for 7 independent days. Batteries are not required.
During power interruption the internal NEVERLOST™
memory stores programmed schedules for an unlimited time
while the clock continues to run for at least 48 hours.
The thermostat can be configured to accept several different
equipment configurations, and is provided for heat pump
operation.
NOTE: The 50QE900-250FS thermostats have wiring connec-
tions for a remote room sensor.
PACKAGE CONTENTS
IMPORTANT: Read entire instructions before starting
the installation.
ITEM
QUANTITY
Thermostat
1
Cutout Template
1
1-in. Screws (Junction Box Installation)
2
1
1
/
2
-in. Self-Tapping Screws
(Non-Junction Box Installation)
2
Plastic Tabs
2
Power Resistor (270 ohm, 10 Watt)
1
50QE900
Aquazone™ Water Source Heat Pump
Flush-Mounted FlatStat
Commercial Programmable Thermostat
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Summary
2 INSTALLATION Select Thermostat Location — The thermostat should be mounted:• approximately 5 ft from the floor• close to or in a frequently used room, preferably on an inside partitioning wall • on a section of wall without pipes or ductwork• where temperature operating limits are within 32 to 122...
3 8. Turn on power to unit. The thermostat will receive power from the unit. The thermostat will be powered by 24 v,nominal (18 to 30 vac). Terminals R (+ 24 v), O/W1 (firststage heat or reversing valve), Y1 (first stage cooling),G (fan relay), and C (common) will always be connected.Some applicatio...
4 Install Thermostat (Without Junction Box) 1. Turn off all power to unit.2. Using cutout template provided, cut hole into wall. See Fig. 6. a. If installing on dry wall, use outside of template tomark hole on wall. b. If installing on paneling, punch out inside oftemplate and use inside of template...
