Reznor MASA Unit Installation Manual - Manual (Page 36)

Form I-COND, P/N 220746R6, Page 36
APPENDIX
IMPORTANT
Reminders about
R-410A
Refrigerant and
POE Oil
•
Installation, maintenance, and service should only be performed by
an HVAC technician qualified in R-410A refrigerant. The qualified
technician must comply with all cautions, warnings, and dangers
in these instructions and with all national, state/province, and local
regulations.
• Due to higher pressure of R-410A refrigerant, use ONLY compo-
nents, service equipment, and tools designed for R-410A refrigerant.
DO NOT USE components, tools, or service equipment designed for
R22 refrigerant. (R-410A operates at 50-70 % higher pressure than
R22.)
• R-410A requires a different gauge set than those used for R22.
• Leak detector should be designed to detect HFC refrigerant.
•
Use hoses with an 800 psig service pressure rating.
• Charge R-410A system with LIQUID refrigerant. R-410A refrigerant
cylinders are rose color (pink) and have a dip tube which allows liq-
uid to flow out of the cylinder in the upright position.
•
An R-410A liquid line filter drier rated for 600 psig and sized for the
circuit is required on each circuit and must be replaced any time the
system is opened. Cut filter drier out with a tubing cutter.
• Model MASA R-410A compressors require Ultra 22CC POE oil.
•
POE oil absorbs moisture quickly; do not expose oil to the
atmosphere.
• Vacuum pumps do not remove moisture from POE oil.
•
Do not vent R-410A refrigerant to the atmosphere.
• Do not use capillary tube coils with R-410A refrigerant.
Model MASA
Technical
Information
MASA Size 60 90 120 150 180 240
Nominal Capacity (Tons) 5 7.5 10 12.5 15 20
Stage Tonnage
Circuit A 1.6 2.4 3.4 4.1 5.1 13
Circuit B 3.4 5.1 6.6 8.4 9.9 7
Operating Weight
lbs 440 461 632 699 749 771
(kg) (200) (209) (287) (317) (340) (350)
Condenser Fan
Type Propeller
RPM 1100
Diameter - Inches (Qty) 26 (1) 26 (2)
Motor HP 3/4 (1) 3/4 (2)
Nominal Air
Flow
CFM 6,000 12,000
(M 3 /hr) (10,194) (20,387)
Watts 345 690
Condenser Coil
Type Aluminum Micro-Channel
Rows - FPI 1-20
Total Face
Area
Sq Ft 8.5 13.1 18.4 22.1 24.0 29.2
M 2 (0.8) (1.2) (1.7) (2.1) (2.2) (2.7)
Connection Outlet
Sizes - Condensing
Unit (inches)
Ckt A - Suction Line 7/8
Ckt B - Suction Line 7/8 1 3/8
Ckt A - Liquid Line 1/2
Ckt B - Liquid Line 1/2
Filter-Drier Connection
Size (inches)
Ckt A - Liquid Line 1/2
Ckt B - Liquid Line 1/2 5/8
Hot Gas Bypass
Connections (inches)
Ckt A 1/2
Ckt B 1/2