Instruction/ maintenance manual of the product W7620 Honeywell
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Honeywell W7620 SINGLE ZONE CONTROL SYSTEM PROVIDES CUSTOMIZED CONTROL OF HVAC SINGLE ZONE EQUIPMENT. SPECIFIC FEATURES THIS SYSTEM OFFERS INCLUDE: COMMUNICATION, APPLICATION FLEXIBILITY, DIRECT DIGITAL CONTROL, EASY INSTALLATION AND PROGRAMMING, AND INCREASED EQUIPMENT RELIABILITY.
SYSTEM DESCRIPTION . . . ; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INST~LATION........,..1.......................................... 7 CHECKOUT . . . . . . . . . . . . . ..1............~...............
The W7620 Single Zone Control System is Honeywell’s new line of single zone control products. The W7620, can conveniently monitor and control individual HVAC zone equipment.
Figure 1 - CNAP Network Diagram.
The W7622 output board has a selection of outputs depending on the model number. One output board of any type can be added to the W7620 Zone Controller. The W7622 drives any output (for heat, cool, etc.), either digital or analog. Function depends upon application.
Figure 3 -POT (Portable Operator’s Terminal).
When installing this product . . . 1. Read these instructions carefully. Failure to follo them could damage the product or cause a hazardous condition. 2. Check the ratings given in the SPECIFICATION: section and on the product to make sure that the product is suitable for the application.
,&Knockout for l/2 in. conduit fittings. h Double knockout for l/2 or 3/4 in. conduit fittings. Figure 4 - W7620 Mounting STANDOFF HOLE PLASTIC STANDOFF 10 PIN CONNECTOR Figure 5 -Mounting Additio.
r I If securing screws are not used, the expansion board will not be grounded. This will result in improper operation or damage to the device. NOTE I The W7620 Single Zone Application Guide, Form 63-4220, provides information on corresponding terminal designations to function connections.
T and Al). See the T7660 Space Temperature Sensor specification sheet, Form 63-4219, for the correct temperature to measure resistance value cross-reference. 4. If long sensor wiring is used, m- resistance supplied to the W7620 by both the temperature sensor and the leadwire for greater accuracy.
The following steps for complete checkout and testing of a W7620 are described fully below. The procedures are as follows: 1. Check W7620 installation and wiring, including power to the W7620.
2. To disable a controller, remove both legs of I or removing connections from Terminals TR and TR earth-ground. the AC power. Removing only one leg may prevent other controllers on the same transformer from communicating on the CNAP network.
Electrical Ratings Supply Voltage 20-30 Vac, 50 or 60 HZ System Current Draw 8.5 VA maximum at 30 Vac, 50 or 60 H Z Inputs: Resistive 29104370 ohm (-40 to 265°F temperature range with platinum sensor.
bl Knockout for l/2 in. conduit fittings. Q Double knockout for 1 /2 or 3/4 in. conduit fittings. Figure 8 - W7620 Dimensions 14 63-4224.
Base Unit (with cover) Input Expansion Boards Use with W7459 Economizer Logic Module, modulating spring Damper Actuator.
Canadian EMI This digital apparatus does not exceed the Class A Le prdsent apparelI “wn&-lque “&net pas de btults limits for radio noise emission fmm digital apparatus rad4c&ctiques de.
An important point after buying a device Honeywell W7620 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell W7620 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell W7620 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell W7620 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell W7620 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell W7620, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell W7620.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell W7620. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell W7620 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
