035-000029-001
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HHA IOM 1.4 10/11/2021
Table of Contents
HHA Series
Air Handler
Installation, Operation and Maintenance
Manual
Topic
Page
SAFETY CONSIDERATIONS
1,4
UNPACKING-Remove Shipping Screws
4
PREINSTALLATION
5
Rigging
5
Unit Weight Calculation
5
Unit Suspension
6
External Vibration Isolators
6 - 7
INSTALLATION
8
Electrical
8 - 23
Service Clearance
24 - 25
Condensate Drain
26
Steam Coil Piping
Recommendations
27 - 30
Coil Freeze-Up Protection
29
Refrigerant Piping, Direct
Expansion (DX) Coils
30 - 31
APD Gauge Option
32
Static Pressure Ports Option
33
Filter Pressure Drop Tables
34
START-UP
35
Fan Curves
36 - 38
SERVICE - Periodic Maintenance &
Replacement
39
Fan Motor
39 - 40
Coil
41 - 44
UV Light
45
VFD Parameters
46 - 51
Water Quality Guidelines
52
Physical Data
53 - 54
Dimensional Drawings
55 - 58
UV Light Accessory
59
HEPA Diffuser Accessory
60 - 62
WARRANTY REGISTRATION FORM
64
REPLACEMENT PARTS
65
Summary of Contents for HHA Series
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