Johnson Controls A19B manual and Air-conditioning Introduction, Description, Feature and Benefits

PSC9705	European Refrigeration Controls Catalogue	1
	Catalog Section
	Product Bulletin	A19A
	Issue	03/03/2003

Series A19A/A19B/A19D

Thermostats for Refrigeration, Cooling, Heating, Ventilation

and Air-conditioning

Introduction

These thermostats are designed for refrigeration, cooling, heating, ventilation and air-conditioning applications. Standard models are provided for remote sensing or room sensing. Models with manual reset are available for low or high limit functions.

Description

These thermostats are available with fixed or adjustable differential. The various control ranges cover a broad range of temperature applications with a minimum number of models. On request a built-in high or low limit stop is possible and can be adjusted quickly and easily in the field. All models have a universal way of adjustment. For this purpose a knob and sealing cap are enclosed.

All A19 style 1 wholesaler code models have a bulb clamp plus screw also enclosed.

A19A capillary thermostat

A19B space thermostat

Feature and Benefits

‰Liquid filled sensing element No cross ambient temperature problems Contact differential over the whole range

	‰ Dust tight Penn switch	Prevents pollution of the contacts by
		electrostatic influences.
	‰ Trip free manual reset	Override is not possible in the control function
	‰ Front adjustment	Less mounting space required.
© 2003 Johnson Controls Inc.		Catalogue Section 1
Order No. PD-A19A-E