Introduction; Combination; Standard Operation Limit; Standard Supplied Accessories - Daikin RWEYQ72PCYD Installation Manual

2.

INTRODUCTION

This installation manual concerns VRV inverters of the Daikin
RWEYQ-PC series. These units are designed for indoor installation and
used for cooling and heat pump applications.
The RWEYQ-PC units can be combined with Daikin VRV series indoor
units for air conditioning purposes.
The present installation manual describes the procedures for unpack-
ing, installing and connecting the RWEYQ-PC units. Installation of the
indoor units is not described in this manual. Always refer to the installa-
tion manual supplied with these units for their installation.

2-1 Combination

The indoor units can be installed in the following range.
• Always use appropriate indoor units compatible with R410A.
To learn which models of indoor units are compatible with
R410A, refer to the product catalogs.
• The Branch Selector units that combined with RWEYQ-PC units for
changing the refrigerant flow to indoor units are T type (BSQ-TVJ,
BS-Q54TVJ) only, or P type (BSVQ-PVJU, BSV-Q36PVJU) only. Do
not combine the T type and P type in the system. Combination of T
type and P type cause malfunction.
• Total capacity/quantity of indoor units
〈Outside unit〉 〈Total capacity index of indoor units〉 〈Total quantity of indoor units〉
RWEYQ72PCYD/CTJ ......... 36- 93.5
RWEYQ84PCYD/CTJ ......... 42- 109
RWEYQ144PCYD/CTJ ....... 72- 187
RWEYQ168PCYD/CTJ ....... 84- 218
RWEYQ216PCYD/CTJ ..... 108- 280
RWEYQ252PCYD/CTJ ..... 126- 327.5

2-2 Standard operation limit

The figures below assume following operating conditions for indoor and
outside units:
Equivalent pipe length ........................................ 25 ft. (7.6 m)
Level difference..................................................................... 0
Cooling
A
120
110
100
90
80
70
60
50
50 60 70 80 90
B
〈In case of antifreeze usage〉
Cooling
A
120
110
100
90
80
70
60
50
40
30
20
50 60 70 80 90
B
A Entering water temperature (°F)
B Indoor temperature (°FWB)
C Indoor temperature (°FDB)
Range for continuous operation
Range for operation
Range for pull down operation
Range for warming up operation
English
12 units
14 units
24 units
29 units
36 units
36 units
Heating
A
120
110
100
90
80
70
60
50
50 60 70 80 90
C
Heating
A
110
100
90
80
70
60
50
40
30
20
10
50 60 70 80 90
C
• Operation range of water flow rate is 13.2-39.6 gpm (50-150 L/min).
(21.2-39.6 gpm (80-150 L/min) in case of antifreeze usage.)
• The unit is designed for the following operation range;
Entering water temperature: 67-95°F (20-35°C)
Water flow rate: 15.9gpm (60L/min) or more
• During cooling operation when the outside temperature is very low, it
is possible that the thermostat switches off automatically in order to
protect the unit from freezing.
• Hold ambient temperature at 35-104°FDB (2-40°CDB).
Heat release from the unit (approx.): RWEYQ72: 2200 Btu/h
(0.64kW), RWEYQ84: 2450 Btu/h (0.71kW)
It is therefore recommended to always ventilate the room.

2-3 Standard supplied accessories

• Make sure that the following accessories are included.
(Check by removing the front panel.)
Name
For discharge For suction
gas gas (1)
Quantity 1 pc. 1 pc.
(Note)
Shape
Name Conduit mounting plate
Quantity 2 pcs. 2 pcs.
Shape
(Refer to figure 1)
1. • Operation manual
• Installation manual
• Clamp (A)
• Clamp (B)
• Conduit mounting plate
2. Accessory pipes
• For discharge gas
• For suction gas (1)
• For suction gas (2)
NOTE
The accessory pipe for discharge gas is used for the heat recovery sys-
tem. (Not used for the heat pump system.)

2-4 Option accessories

To install the above outside units, the following optional parts are also
required.
• Refrigerant branch kit
(For R410A only: Always use an appropriate kit dedicated for your
system.)
〈Heat pump system〉
REFNET header KHRP26M22H9 KHRP26M33H9 KHRP26M72H9 KHRP26M73HU9
REFNET joint KHRP26A22T9 KHRP26A33T9 KHRP26M72TU9 KHRP26M73TU9
〈Heat recovery system ..... For 3-tube piping〉
REFNET header KHRP25M33H9 KHRP25M72H9 KHRP25M73HU9
REFNET joint KHRP25A22T9 KHRP25A33T9 KHRP25M72TU9 KHRP25M73TU9
〈Heat recovery system ..... For 2-tube piping〉
REFNET header KHRP26M22H9 KHRP26M33H9 KHRP26M72H9 KHRP26M73HU9
REFNET joint KHRP26A22T9 KHRP26A33T9 KHRP26M72TU9 KHRP26M73TU9
• Outside unit multi connection piping kit
(For R410A only: Always use an appropriate kit dedicated for
your system.)
Number of outside units
connected
Heat pump system BHFP22MA56U
Heat recovery system BHFP26MA56U
∗ To select an optimum kit, refer to 9. REFRIGERANT PIPING
Accessory pipes
For suction
Clamp (A) Clamp (B)
gas (2)
1 pc. 7 pcs. 2 pcs.
Black
White
[Others]
•
Installation manual
•
Operation manual
2 units 3 units
BHFP22MA84U
BHFP26MA84U
3