Installation Instructions

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)Accessories for Room thermostat

Document No. 129-450

October 5, 2009

RLA162.5U Room Temperature

Controller

Item Number 129-450, Rev. AA Page 1 of 4

Product Description

Room temperature controller for basic ventilation, air

conditioning and heating systems. Compact design

with two analog, 0 to 10 Vdc control outputs for

heating and/or cooling.

Product Numbers

RLA162.5U Automatic Heat/Cool Changeover

Warning/Caution Notations

WARNING:

Personal injury/loss of life may

occur if you do not follow the

procedures as specified.

CAUTION:

Equipment damage, or loss of

data may occur if you do not

follow the procedures as

specified.

Required Tools

• Small, flat-blade screwdriver

• Wire strippers

• 6-inch level

Mounting Accessories

• ARG70 wall plate

• 141-570 lockable thermostat guard

• QAP22 Changeover sensor

Expected Installation Time

35 minutes

Prerequisites

• Provide 24 Vac power source to thermostat wall

mounting location.

• Run wires from damper/valve actuator to

thermostat wall mounting location.

Installation

Figure 1. Acceptable Mounting Height in Inches.

Figure 2. Airflow Requirements in Inches.

Summary of content (4 pages)

PAGE 1
Installation Instructions Document No. 129-450 October 5, 2009 RLA162.5U Room Temperature Controller Product Description Room temperature controller for basic ventilation, air conditioning and heating systems. Compact design with two analog, 0 to 10 Vdc control outputs for heating and/or cooling. Product Numbers Prerequisites • Provide 24 Vac power source to thermostat wall mounting location. • Run wires from damper/valve actuator to thermostat wall mounting location. Installation RLA162.
PAGE 2
Document No. 129-450 Installation Instructions October 5, 2009 Page 2 of 4 1 2 3 4 5 6 Siemens Industry, Inc.
PAGE 3
Wiring Terminals 1 2 D1 5 GND 10 11 13 18 19 20 Operating voltage, 24 Vac positive Operating voltage, 24 Vac negative Day/night changeover Limitation input 0 to 10 Vdc Ground for day/night changeover Measuring Neutral Heat/cool changeover sensor Fan or auxiliary relay, positive Control signal, 0 to 10 Vdc, Heat 1 Control signal, 0 to 10 Vdc, Cool or Heat 2 Fan or auxiliary relay, negative Figure 5. RLA162.5U Room Temperature Control with Minimum Limitation of the Supply Air Temperature.
PAGE 4
Commissioning, Continued Proportional band adjustment (XP1): 0°F to 90°F (0 K to 50 K) Potentiometer setting should correspond to the required range of the controller’s output signal. Energy saving adjustment (ECO): 0°F to 18°F (0 K to 10 K) Potentiometer setting should correspond to the required offset of normal setpoint. Energy Saving = Normal setpoint +/- offset. NOTE: XP1 and ECO adjustments must be made by the user; factory settings are zero or “random”.