. TABLE OF CONTENTS
I. Table of ontents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
III. hecking Product Received . . . . . . . . . . . . . . . . . . . . . 2
IV. Equipment Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 2
V. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
B. Major omponents . . . . . . . . . . . . . . . . . . . . . . . . 3
. R-410A Refrigerant. . . . . . . . . . . . . . . . . . . . . . . . 3
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Heater Kit haracteristics. . . . . . . . . . . . . . . . . . . . 12-13
Gross Systems Performance Data. . . . . . . . . . . . . 14-15
Water Heater Performance Data . . . . . . . . . . . . . . 16-17
VI. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
A. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1. Pre-Installation heck Points . . . . . . . . . . . . . . . 18
2. Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
B. H2A Rooftop Unit Special onsiderations. . . . . . . . 18
. learances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
D. Rooftop Installation . . . . . . . . . . . . . . . . . . . . . . . . . 19
VII. Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VIII. Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
IX. ondensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
X. Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
A. Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
B. ontrol Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. Internal Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
D. Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
E. Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
XI. Indoor Air Flow Data . . . . . . . . . . . . . . . . . . . . . . . . . . 21
XII. rankcase Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
XIII. Water onnections and Start Up for Potable
Water Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
A. Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
B. System Pressure Test and Start Up . . . . . . . . . . . . 22
XIV. Lime and Scale Flushing Procedure . . . . . . . . . . . . . . 27
XV. Pre-Start heck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
XVI. Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
XVII. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
XVIII. H2A Rooftop Unit Sequence of Operation. . . . . . . . . 28
XIX. Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
XX. Airflow Data Tables . . . . . . . . . . . . . . . . . . . . . . . . 34-35
XXI. Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
XXII. H2A Rooftop Unit Unit Alarms and
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
XXIII. Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . 38-45
XXIV. harge harts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46-47
. NTRODUCT ON
THE MANUFACTURER’S WARRANTY DOES NOT COVER
ANY DAMAGE OR DEFECT TO THE A R COND T ONER
CAUSED BY THE ATTACHMENT OR USE OF ANY COMPO-
NENTS, ACCESSOR ES OR DEV CES (OTHER THAN
THOSE AUTHOR ZED BY THE MANUFACTURER) NTO,
ONTO OR N CONJUNCT ON W TH THE A R COND T ON-
ER. YOU SHOULD BE AWARE THAT THE USE OF UNAU-
THOR ZED COMPONENTS, ACCESSOR ES OR DEV CES
MAY ADVERSELY AFFECT THE OPERAT ON OF THE A R
COND T ONER AND MAY ALSO ENDANGER L FE AND
PROPERTY. THE MANUFACTURER D SCLA MS ANY
RESPONS B L TY FOR SUCH LOSS OR NJURY RESULT-
NG FROM THE USE OF SUCH UNAUTHOR ZED COMPO-
NENTS, ACCESSOR ES OR DEV CES.
This booklet contains the installation and operating instructions
for your air conditioner. There are a few precautions that
should be taken to derive maximum satisfaction from it.
Improper installation can result in unsatisfactory operation or
dangerous conditions.
Read this booklet and any instructions packaged with separate
equipment required to make up the system prior to installation.
Give this booklet to the owner and explain its provisions. The
owner should retain this booklet for future reference.
.CHECK NG PRODUCT RECE VED
Upon receiving the unit, inspect it for any damage from ship-
ment. laims for damage, either shipping or concealed, should
be filed immediately with the shipping company. heck the unit
model number, heating size, electrical characteristics, and
accessories to determine if they are correct.
V. EQU PMENT PROTECT ON
V. FROM THE ENV RONMENT
The metal parts of this unit may be subject to rust or deteriora-
tion in adverse environmental conditions. This oxidation could
shorten the equipment’s useful life. Salt spray, fog or mist in
seacoast areas, sulphur or chlorine from lawn watering sys-
tems, and various chemical contaminants from industries such
as paper mills and petroleum refineries are especially corro-
sive.
f the unit is to be installed in an area where contaminants
are likely to be a problem, special attention should be
given to the equipment location and exposure.
1. Avoid having lawn sprinkler heads spray direction on the
unit cabinet.
2. In coastal areas, locate the unit on the side of the building
away from the waterfront.
3. Shielding provided by a fence or shrubs may give some
protection.
Regular maintenance will reduce the buildup of contami-
nants and help to protect the unit’s finish.
D SCONNECT ALL POWER TO THE UN T BEFORE START-
NG MA NTENANCE. FA LURE TO DO SO CAN RESULT N
SEVERE ELECTR CAL SHOCK OR DEATH.
1. Frequent washing of the cabinet, fan blade and coil with
fresh water will remove most of the salt or other contami-
nants that build up on the unit.
2. Regular cleaning and waxing of the cabinet with a good
automobile polish will provide some protection.
3. A good liquid cleaner may be used several times a year to
remove matter that will not wash off with water.
Several different types of protective coatings are offered in
some areas. These coatings may provide some benefit, but the
effectiveness of such coating materials cannot be verified by
the equipment manufacturer.
The best protection is frequent cleaning, maintenance and
minimal exposure to contaminants.
V. SPEC F CAT ONS
A. GENERAL
The H
2
A Rooftop Unit with optional Electric Heat is available with
a ooling capacity of 10 nominal tons and optional 10, 15, 20, 30,
40, or 50 kW of electric heat.
For the single stage 10 ton model (LHL- 120), potable water heat-
ing capacities range from approximately 120,000 BTUH to 168,000
BTUH depending on water temperature, indoor air temperatures,
and indoor FM.
For the two stage 10 ton model (LHL-D120), potable water heating
capacities range from approximately 80,000 BTUH to 100,000
BTUH depending on water temperature, indoor air temperatures,
and indoor FM
2
WARN NG
!
WARN NG
!
