Reznor MASA Unit Installation Manual - Manual (Page 4)

Form I-COND, P/N 220746R6, Page 4
1.0 General
(cont’d)
1.1 Hazard Labels
and Notices
(cont’d)
CAUTION
Do not leave system open to the atmosphere any longer than
minimum required for installation. Exposure for more than
five minutes may contaminate the system. POE oil in the
compressors is extremely susceptible to moisture absorption.
Always keep ends of tubing sealed during installation.
1.2 General Information
This booklet includes operation, maintenance, and service information. Before
beginning any procedure, carefully review the information, paying particular
attention to the warnings. All installations must be in compliance with all codes
and requirements of authorities having jurisdiction.
A Model MASA outdoor condensing unit operates on R-410A refrigerant and
has two independent refrigeration circuits configured in an approximate 1/3-
2/3 arrangement. The Model MASA condensing unit is designed for use with a
Reznor PreevA ® air handler unit with a 1/3-2/3 two-circuit cooling coil. PreevA ®
indoor Models are PDH or SDH; outdoor Model is RDH. The Model MASA con-
densing unit may also be matched to a field-supplied 1/3-2/3 two-circuit evapo-
rator coil. An air handler used with a Model MASA condensing unit must be
properly matched; the evaporator coil must have freeze protection and must
be equipped with properly sized thermostatic expansion valves.
CAUTION
The condensing unit must be matched to an approximate
1/3-2/3 two-circuit, R-410A refrigerant evaporator coil with
properly sized thermostatic expansion valves. Failure to
properly match and/or equip the split system components will
prevent the system from operating correctly and will void the
manufacturer’s warranty. See Hazard Levels, page 3.
1.3 Warranty
Refer to limited warranty information on the Warranty Form in the “Literature
Bag” shipped with this system.
A completed Condenser Startup Form on page 39 may be required for valida-
tion of any warranty claim. Proper Check, Test, and Startup procedures MUST
be followed, as documented in this manual. The factory reserves the right to
deny warranty without a completed Condenser Startup Form.
1.4 Installation Codes
All installations must be in compliance with the National Electric Code ANSI/
NFPA No. 70 (latest edition) or, in Canada, the Canadian Electrical Code,
Part I-C.S.A. Standard C 22.l. Check any local ordinances or utility company
requirements that apply. The installation must be in compliance with all authori-
ties having jurisdiction. Local code requirements supersede national require-
ments.
WARNING
Before installing or servicing, always turn off the main
power to the system and install a lock out on the disconnect
switch.