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EWYT090CZP-A2
Daikin EWYT090CZP-A2 User Manual
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REV
00
Date
04/2021
Supersedes
/
Installation, Maintenance and Operation Manual
DEIMHP0140521_00EN
Air to water heat pump units with scr
oll compr
essors
EWYT~CZ / EWAT~CZ
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
4
Precautions against Residual Risks
4
General Description
5
Information about the Refrigerant
5
Installation Information
5
Table 1 - Physical Properties of R32 Refrigerant
5
3 Storage
7
2 Receipt of the Unit
7
4 Mechanical Installation
7
Handling and Lifting
7
Lifting the MONO Unit
8
Lifting the DUAL Unit
8
Positioning and Assembly
8
Figure 1 - Lifting the MONO Unit
8
Figure 2 - Lifting the DUAL Unit
8
Minimum Space Requirements
9
Figure 3 - Mountig Holes Location (Bottom View)
9
Figure 4 - DUAL Unit
9
Additional Installation Site Requirements
10
Figure 5 - Units Installed Side by Side Along Their Shorter Sides, B or D
10
Figure 6 - Units Installed Side by Side Along Their Longer Sides (Case 1 and Case 2)
10
Figure 7 - Seaside Installation of the Outdoor Unit
10
Noise and Acoustic Protection
11
Water Circuit for Connection with the Unit
11
Water Piping
11
Flow Switch
11
Table 2 - Minimum Glycol Percentage for Low Ambient Air Temperature
11
Safety
12
Preparing and Checking the Water Circuit Connection
12
Water Pressure
12
Hydraulic Diagram
12
Figure 8 - Hydraulic Diagram
12
Table 3 - Flow Switch Setpoint
12
Table 4 - Operating Limits
12
Water Treatment
13
Water Pressure Drops For Filters
13
Pump Kit Mounted on Board (Optional)
13
Figure 9 - Water Filter Pressure Drops
13
Figure 10 - External Pressure Head of Low Lift Pump
13
Figure 11 - External Pressure Head of High Lift Pump
13
Table 5 - Acceptable Water Quality Limits
13
Operation Limits
14
Figure 12 - Operating Limits on EWATCZ
14
Figure 13 - Operating Limits on EWYTCZ in Cooling Mode
14
Figure 14 - Operating Limits on EWYTCZ in Heating Mode
14
Table 6 - Pump Curve Associated with each Unit Size
14
Operating Stability and Minimum Water Content in the System
15
Calibrating the Expansion Vessel
15
Figure 15 - Minimum Water Volume Correction Factor
15
Figure 16 - Initial Expansion Vessel Pressure on the Basis of Maximum Water Volume
15
Table 7 - Minimum Water Content in the System
15
Antifreeze Protection for BPHE and Recovery Exchangers
16
5 Electrical Installation
16
General Specifications
16
Electric Connections
16
Cable Requirements
17
Interconnection Cables
17
Safety Device Requirements
17
Table 8 - Table 1 of EN602041 Point 5.2
17
Phase Unbalance
18
6 Operator's Reponsibilities
18
7 Maintenance
19
Pressure / Temperature Table
19
Routine Maintenance
19
Air Heat Exchanger Maintenance
19
Table 9 - R32 Pressure/Temperature
19
Electrical Installation
20
Service and Limited Warranty
20
Table 10 - Standard Routine Maintenance Plan
20
Table 11 - Routine Maintenance Plan for Critical Application And/Or Highly Aggressive Environment
21
Refrigerant Circuit Scheme
22
Figure 17 - Refrigerant Circuit (P&ID) Diagram for MONO Circuit EWYT~CZ Unit
22
Figure 18 - Refrigerant Circuit (P&ID) Diagram for MONO Circuit EWAT~CZ Unit
23
Figure 19 - Refrigerant Circuit (P&ID) Diagram for DUAL Circuit EWYT~CZ Unit
24
Figure 20 - Refrigerant Circuit (P&ID) Diagram for DUAL Circuit EWAT~CZ Unit
25
8 List of the Labels Applied to the Unit
26
9 Checks for the First Startup
26
Figure 21 - Labels on the Unit
26
Table 12 - Labels Applied to the Unit
26
Table 13 - Checks before Starting up the Unit
26
10 Important Information on the Refrigerant Used
27
11 Periodic Checks and Commissioning of Pressure Equipment
27
12 Dismission and Disposal
27
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Daikin EWYT090CZP-A2 Specifications
General
Model
EWYT090CZP-A2
Category
Heat Pump
Energy Efficiency Class
A++
Refrigerant
R32
Power Supply
400/3/50 V/Ph/Hz
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