York R134A manual PART 3 — EXECUTION 3.01 INSTALLATION

FORM 201.23-EG1 (1007)

components.

4.Louvered/Wire Panels: Louvered steel panels on external condenser coil faces, painted to match unit panels. Heavy gauge, welded wire- mesh, coated to resist corrosion, around base of machine to restrict unauthorized access.

E.Evaporator options:

1.Provide 1-1/2” (38mm) cooler insulation in lieu of standard 3/4” (19mm).

2.Provide Raised Face Flanges for cooler nozzles:

a.150 PSIG (10.3 bar), welded flanges (field kit, matching pipe flange by contractor).

b.150 PSIG (10.3 bar) companion flanges. (not available with 460V units)

c.150 PSIG (10.3 bar), ANSI/AWWA C-606 couplings (field kit, matching pipe flange by contractor).

F.Flow Switch (Field Mounted): Vapor proof SPDT, NEMA 3R switch [ ___150 PSIG (10.3 bar) or

___300 PSIG (20.7 bar)], -20°F to 250°F (-28.9°C to 121.1°C).

G.Building Automation System Interface:

1.Chiller to accept 4 to 20mA or 0 to 10 VDC input to reset the leaving chilled liquid tem- perature. (Factory Mounted)

H.Multi-Unit Sequence Control (Field Mounted): Sepa- rate Sequencing control center provided to permit control of up to eight chillers in parallel based on mixed liquid temperature.

I.Vibration Isolation (Field Mounted):

1.Neoprene Isolators.

2.1 Inch Deflection Spring Isolators: Level ad- justable, spring and cage type isolators for mounting under the unit base rails.

3.2 Inch Deflection Seismic Isolators: Level

adjustable, restrained mounts in rugged welded steel housing with vertical and horizontal limit stops. Housings shall be designed to withstand a minimum 1.0g accelerated force in all directions to 2” (50.8 mm).

J.Service Shut-Off Valve: Provide suction service shut-off valve for each compressor. (Factory Mounted)

PART 3 — EXECUTION

3.01 INSTALLATION

A.General: Rig and Install in full accordance with Manu- facturer’s requirements, Project drawings, and Contract documents.

B.Location: Locate chiller as indicated on drawings, includ- ing cleaning and service maintenance clearance per Manufacturer instructions. Adjust and level chiller on support structure.

C.Components: Installing Contractor shall provide and install all auxiliary devices and accessories for fully operational chiller.

D.Electrical: Coordinate electrical requirements and con- nections for all power feeds with Electrical Contractor

(Division 16).

E.Controls: Coordinate all control requirements and con- nections with Controls Contractor.

F.Finish: Installing Contractor shall paint damaged and abraded factory finish with touch-up paint matching fac- tory finish.

JOHNSON CONTROLS 137