Comfort-Aire TGRG Series for R-410A - Manual (Page 6)

6
II. INTRODUCTION
This booklet contains the installation and operating instructions for your combination gas
heating/electric cooling unit. There are some 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.
III. CHECKING PRODUCT RECEIVED
Upon receiving the unit, inspect it for any damage from shipment. Claims for damage,
either shipping or concealed, should be filed immediately with the shipping company.
IMPORTANT: Check the unit model number, heating size, electrical characteristics, and
accessories to determine if they are correct.
IV. SPECIFICATIONS
A. GENERAL
The Combination Gas Heating/Electric Cooling Rooftop is available in 40,60, 80 and 100
BTU/Hr. heating inputs and cooling capacities of 2, 2
1 ⁄
2
, 3, 3 1 ⁄
2
, 4 and 5 nominal tons of
cooling. Units are convertible from end supply and return to bottom supply and return by
relocation of supply and return air access panels. See cover installation detail.
The units are weatherized for mounting outside of the building.
The information on the rating plate is in compliance with the FTC and DOE rating for sin-
gle phase units. The following information is for three phase units which are not covered
under the DOE certification program.
1. The energy consumption of the ignition system used with this unit is 9 watts.
2. The efficiency rating of this unit is a product thermal efficiency rating determined
under continuous operating conditions independent of any installed system.
B. MAJOR COMPONENTS
The unit includes a hermetically-sealed refrigerating system (consisting of a compressor,
condenser coil, evaporator coil with thermostatic expansion valve), a circulation air blow-
er, a condenser fan, a heat exchanger assembly, gas burner and control assembly,
combustion air motor and fan, and all necessary internal electrical wiring. The cooling
system of these units is factory-evacuated, charged with R-410A refrigerant and perfor-
mance tested. Refrigerant amount is indicated on rating plate.
C. R410A REFRIGERANT
All units are factory charged with R-410A refrigerant.
1. Specification of R-410A:
Application: R-410A is not a drop-in replacement for R-22; equipment designs must
accommodate its higher pressures. It cannot be retrofitted into R-22 units.
Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than R-
22. Recovery and recycle equipment, pumps, hoses and the like need to have design
pressure ratings appropriate for R-410A. Manifold sets need to range up to 800 psig
high-side and 250 psig low-side with a 550 psig low-side retard. Hoses need to have a
service pressure rating of 800 psig. Recovery cylinders need to have a 400 psig service
pressure rating. DOT 4BA400 or DOT BW400.
Combustibility: At pressures above 1 atmosphere, mixture of R-410A and air can
become combustible. R-410A and air should never be mixed in tanks or supply
lines, or be allowed to accumulate in storage tanks. Leak checking should never
be done with a mixture of R-410A and air. Leak checking can be performed safely
with nitrogen or a mixture of R-410A and nitrogen.
! WARNING
IMPORTANT: ALL MANUFACTUR-
ER PRODUCTS MEET CURRENT
FEDERAL OSHA GUIDELINES FOR
SAFETY. CALIFORNIA
PROPOSITION 65 WARNINGS ARE
REQUIRED FOR CERTAIN PROD-
UCTS, WHICH ARE NOT COVERED
BY THE OSHA STANDARDS.
CALIFORNIA'S PROPOSITION 65
REQUIRES WARNINGS FOR PROD-
UCTS SOLD IN CALIFORNIA THAT
CONTAIN, OR PRODUCE, ANY OF
OVER 600 LISTED CHEMICALS
KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE CANCER
OR BIRTH DEFECTS SUCH AS
FIBERGLASS INSULATION, LEAD
IN BRASS, AND COMBUSTION
PRODUCTS FROM NATURAL GAS.
ALL “NEW EQUIPMENT” SHIPPED
FOR SALE IN CALIFORNIA WILL
HAVE LABELS STATING THAT THE
PRODUCT CONTAINS AND/OR
PRODUCES PROPOSITION 65
CHEMICALS. ALTHOUGH WE HAVE
NOT CHANGED OUR PROCESSES,
HAVING THE SAME LABEL ON ALL
OUR PRODUCTS FACILITATES
MANUFACTURING AND SHIPPING.
WE CANNOT ALWAYS KNOW
“WHEN, OR IF” PRODUCTS WILL
BE SOLD IN THE CALIFORNIA
MARKET.
YOU MAY RECEIVE INQUIRIES
FROM CUSTOMERS ABOUT CHEMI-
CALS FOUND IN, OR PRODUCED
BY, SOME OF OUR HEATING AND
AIR-CONDITIONING EQUIPMENT,
OR FOUND IN NATURAL GAS USED
WITH SOME OF OUR PRODUCTS.
LISTED BELOW ARE THOSE CHEM-
ICALS AND SUBSTANCES COM-
MONLY ASSOCIATED WITH SIMI-
LAR EQUIPMENT IN OUR INDUS-
TRY AND OTHER MANUFACTUR-
ERS.
• GLASS WOOL (FIBERGLASS)
INSULATION
• CARBON MONOXIDE (CO)
• FORMALDEHYDE
• BENZENE
MORE DETAILS ARE AVAILABLE
AT THE WEBSITES FOR OSHA
(OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION), AT
WWW.OSHA.GOV AND THE STATE
OF CALIFORNIA'S OEHHA (OFFICE
OF ENVIRONMENTAL HEALTH
HAZARD ASSESSMENT), AT
WWW.OEHHA.ORG. CONSUMER
EDUCATION IS IMPORTANT SINCE
THE CHEMICALS AND SUB-
STANCES ON THE LIST ARE
FOUND IN OUR DAILY LIVES. MOST
CONSUMERS ARE AWARE THAT
PRODUCTS PRESENT SAFETY AND
HEALTH RISKS, WHEN IMPROPER-
LY USED, HANDLED AND MAIN-
TAINED.
! WARNING
UNITS ARE NOT DESIGN CERTIFIED TO BE INSTALLED INSIDE THE STRUC-
TURE. DOING SO CAN CAUSE INADEQUATE UNIT PERFORMANCE AS WELL
AS PROPERTY DAMAGE AND CARBON MONOXIDE POISONING RESULTING
IN PERSONAL INJURY OR DEATH.