Raypak LONMARK Y-200 - Manual (Page 4)

4
Y–200 SERIES ELECTRONIC
BOILER CONTROL
SAFETY INSTRUCTIONS
Thank you for selecting the Raypak Y–200 Series
Electronic Boiler Control. It is our sincere hope that
you will enjoy its outstanding design, ease of use and
energy-saving features.
Please Register
Before proceeding any further, please take a moment
to complete the enclosed user registration form and
mail a copy to: Raypak, Inc., Department Y–200, 2151
Eastman Avenue, Oxnard, CA 93030.
INTRODUCTION
The Y-200 Series Electronic Boiler Control (controller)
is a microprocessor-based boiler management system
designed to control either single or multiple stage-fired
boilers. Ideally suited for use in hydronic heating and
domestic hot water supply applications, this controller
has been engineered with the flexibility and raw power
to tame the most demanding control situations.
Utilizing state-of-the-art control algorithms, the Y-200
Series minimizes operating costs by maximizing ener-
gy efficiency.
Concept of Operation
The controller is an outdoor reset control that is perfect
for managing hydronic heating systems. Two tempera-
ture sensors are used to control system response.
One sensor is used to monitor the outdoor tempera-
ture, the other sensor is used to regulate the
temperature of the system water. By varying the tem-
perature of the heating medium in response to
changes in the outdoor temperature, the Y-200 Series
provides the ultimate in personal comfort and efficien-
cy of operation.
The controller is also well adapted to domestic hot
water supply duty. By disabling the outdoor reset func-
tion, the Y-200 behaves as an energy-wise boiler
sequencer. With the ability to control multiple firing
stages, and such features as a revolutionary selec-
table lead-lag protocol, the Y-200 redefines
"controllability" in domestic water applications.
The controller is equipped with an energy-saving
warm-weather shutdown capability. When the outdoor
temperature rises above an adjustable "Outdoor Cut-
off Temperature," the system automatically transitions
to a dormant state. This prevents the system from
wasting energy trying to heat a building that is already
at a comfortable temperature.
Once the outside temperature has fallen to the point
that the system requires heat input to maintain the
building temperature, the Y-200 is reactivated and will
hold the system temperature at the required point.
For replacement items, see page 38.
NOTE: These instructions are intended for use by
qualified personnel who are specifically trained and
experienced in the installation of this type of
equipment and related system components.
Installation and service personnel may be required
by some states to be licensed. If your state requires
certification, be sure your contractor bears the
appropriate license. Only qualified persons shall
attempt to repair this equipment. Repair must be
according to these instructions.
WARNING: Improper installation, adjustment,
alteration, service or maintenance may damage the
equipment, create a hazard resulting in
asphyxiation, explosion, fire, electric shock, personal
injury or property damage, and will void the warranty.
CAUTION: MORE THAN ONE (1) SUPPLY
SOURCE. THIS APPLIANCE HAS PROVISIONS
TO BE CONNECTED TO MORE THAN ONE (1)
SUPPLY SOURCE. TO REDUCE THE RISK OF
ELECTRIC SHOCK, DISCONNECT ALL SUCH
CONNECTIONS BEFORE SERVICING.
CAUTION: RISK OF ELECTRIC SHOCK. MORE
THAN ONE (1) DISCONNECT SWITCH MAY BE
REQUIRED TO DE-ENERGIZE THE EQUIPMENT
BEFORE SERVICING.