Daikin VHF Manual

Installation and Maintenance Manual IM 986-11
Group: WSHP
Part Number: 910258818
Date: December 2018
Vertical Stack Water Source Heat Pumps
Model VHF Cabinet
Model VHC Chassis (Standard Range)
Model VHW Chassis (Geothermal Range)
Unit Sizes 009 – 036 / R-410A Refrigerant
Model VHF Model VHC/VHW

Contents
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Model Nomenclature ..........................4
Receiving and Storage.........................6
Receiving and Storage ........................6
Handling ...................................7
General Information ..........................7
Disassembling Upper and Lower Cabinet Sections ..8
Dimensional Data .............................9
Model VHF & VHW – 18" × 18" Cabinet –
Size 009-012 ................................9
Model VHF & VHW – 18" × 20" Cabinet –
Size 015-018 ...............................10
Model VHF & VHW – 24" × 24" Cabinet –
Size 021-036 ...............................11
Pre-Installation Considerations ................12
Cabinet Congurations .......................13
Critical Dimensions ..........................15
Framing Locations and Dimensions .............15
Louvered Return Air Panel Door with Optional
Motorized Outdoor Air Damper .................16
Vertical Riser Stub-Outs Locations to
Unit Knockouts .............................17
Return Air Panel Door(s) Dimensions ............18
Installation..................................19
Risers and Cabinet ..........................19
Water System Quality ........................21
Supply & Return Piping .......................22
Cleaning and Flushing Water System ............22
Operating Limits ............................23
Antifreeze Correction Factors ..................23
Power Wiring From Building to Unit .............24
Typical Connections For Thermostats & Temperature
Sensors Applications.........................24
Unit Piping Connection .......................27
Shutoff/Balancing Valve ......................27
Motorized Valve & Auto Flow Regulator ..........27
Make Flexible Hose Connections to the Supply and
Return Valves From Riser Stub-Outs ............28
Important When Handling Chassis ..............28
Installing Unit Chassis........................28
Making Cabinet to Chassis Wiring Connections ....29
Installing the (Optional) Remote Control Node (RCN)
For Use With The Optional Wireless Thermostat ...29
Installation..................................31
Installing The Return Air Panel Door.............31
Installing The Optional Motorized Outdoor Air Damper
with Louver Panel Door Only ..................32
Installing The Discharge Air Diffuser .............35
Twin Units Installation ........................36
Controls....................................37
Jumper Conguration Settings .................39
MicroTech® III SmartSource Unit Controller .......40
MicroTech SmartSource Controller with LonWorks®
Communication Module ......................41
MicroTech SmartSource Controller with BACnet®
Communication Module ......................41
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Fan Performance for PSC Motor (Sizes 009 - 036) . 43
Fan Performance for Constant Torque EC Motor
(Sizes 009-012).............................44
Fan Performance for Constant CFM EC Motor
(Sizes 015 - 036)............................45
Performance For Constant Torque EC Motor
(Sizes 009 & 012) ...........................46
Typical Wiring Diagrams ......................47
Typical Wiring Diagrams ......................49
Start-Up ....................................53
Information for Initial Start-up ..................53
Check, Test & Start Procedure .................53
Motorized Isolation Valve & Relay...............53
The in and outs of R-410A ....................54
Lubrication.................................54
Charging ..................................54
General Maintenance .........................54
Troubleshooting .............................55
Typical Refrigeration Cycles ...................56
Water Source Heat Pump Equipment Check, Test and
Start Form .................................57
Unit Check / Equipment Data ..................58

Model noMenClature
Note: Text displayed in Bold-Italics designate standard offering.
Category Code Item Code Option Code Designation & Description (Bold-Italic = Standard)
Product Category 1 1 W = Water Source Heat Pump
Model Type 2 2, 3, 4 VHC = Vertical Stacked Heat Pump Chassis
VHF = Vertical Stacked Heat Pump Cabinet
VHW = Vertical Stacked Geothermal Chassis only
Design Series 3 5 3 = 3rd Design
4 = 4th Design (Sizes 015 only)
Unit Size 4 6, 7, 8 009 = 9,000 Btuh Nominal Cooling
012 = 12,000 Btuh Nominal Cooling
015 = 15,000 Btuh Nominal Cooling
018 = 18,000 Btuh Nominal Cooling
021 = 21,000 Btuh Nominal Cooling
024 = 24,000 Btuh Nominal Cooling
030 = 30,000 Btuh Nominal Cooling
036 = 36,000 Btuh Nominal Cooling
Controls 5 9 B = MicroTech III Unitary Controller - Standalone
C = Microtech III Unitary Controller w/LonWorks Comm Module
D = Microtech III Unitary Controller w/BACnet Comm Module
F = Microtech III Unitary Controller w/BACnet Comm Module - WSHP System
Voltage 6 10 A = 115/60/1
E = 208-230/60/1
J = 265-277/60/1
Secondary Drain Pan 7 11, 12 GL = Standard Galvanized
SS = Stainless Steel - IAQ Option
YY = None
Refrigerant 8 13 A = R410A
Motorized 2-way Isolation Valve 9 14 C = 2-Way Motorized 1/2" Iso-Valve, General Close-Off Pressure N.C.
(Normally Closed)
V = 2-Way Motorized 1/2" Iso-Valve, General Close-Off Pressure N.O.
(Normally Open)
H = 2-Way Motorized 1/2" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed)
D = 2-Way Motorized 3/4" Iso-Valve, General Close-Off Pressure N.C. (Normally Closed)
K = 2-Way Motorized 3/4" Iso-Valve, General Close-Off Pressure N.O. (Normally Open)
J = 2-Way Motorized 3/4" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed)
E = 3-Way Motorized 1/2" Iso-Valve, General Close-Off Pressure N.C. (Normally Closed)
G = 3-Way Motorized 1/2" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed)
M = 3-Way Motorized 3/4" Iso-Valve, General Close-Off Pressure N.C. (Normally Closed)
P = 3-Way Motorized 3/4" Iso-Valve, High Close-Off Pressure N.C. (Normally Closed)
B = Auto-Reg-PT
Y = None
Chassis Construction Type 10 15 A = 1/2" Fiberglass Skin Faced
E = 3/8" Closed Cell Foam
Note: F = 1/2" Fiberglass - Foil Faced
A compressor sound blanket is not recommended Y = None
for units with a rotary compressor 16 M = Mass Plate & Comp Blanket (Unit Sizes 024-036 Only)
(Unit sizes 009-021) S = Mass Plate Only
Coaxial Heat Exchanger
Construction 11 18 C = Copper Inner Tube - Steel Outer Shell
S = Cupronickel Inner Tube - Steel Outer Shell
Discharge Air 13 20 B = Primary Supply - Back
F = Primary Supply - Front
L = Primary Supply - Left
R = Primary Supply - Right
T = Primary Supply - Top
Y = None
21 B = Secondary Supply - Back
F = Secondary Supply - Front
L = Secondary Supply - Left
R = Secondary Supply - Right
T = Secondary Supply - Top
Y = None
22 T = Tertiary - Top
Power Connection 14 23 F = Fused Disconnect with Wire Harness
N = Non-Fused Disconnect with Wire Harness
H = HACR Breaker
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Model noMenClature
Note: Text displayed in Bold-Italics designate standard offering.
Category Code Item Code Option Code Designation & Description (Bold-Italic = Standard)
Blower Motor 15 24 1 = Standard PSC
3 = EC Motor
25 2 = 2 Speed Fan - T'Stat Controlled
3 = 2 Speed Fan - Unit Toggle Switch
4 = 4 Position Fan Speed Selection Switch (Units with EC motor)
Power & Control Access 16 26 S = Side
T = Top
Flow Control 17 27 B = Auto Flow Regulator 1.5 GPM
C = Auto Flow Regulator 2.0 GPM
D = Auto Flow Regulator 2.5 GPM
E = Auto Flow Regulator 3.0 GPM
F = Auto Flow Regulator 3.5 GPM
G = Auto Flow Regulator 4.0 GPM
H = Auto Flow Regulator 4.5 GPM
I = Auto Flow Regulator 5.0 GPM
J = Auto Flow Regulator 5.5 GPM
K = Auto Flow Regulator 6.0 GPM
L = Auto Flow Regulator 7.0 GPM
M = Auto Flow Regulator 8.0 GPM
N = Auto Flow Regulator 9.0 GPM
O = Auto Flow Regulator 10.5 GPM
YY = None
28 S = Strainer
Filter Type 18 29 S = Standard 1"Fiberglass
Y = None
M = 1" Merv 8
Cabinet Height 19 30, 31, 32 080 = 80" Cabinet Height
088 = 88" Cabinet Height
092 = 92" Cabinet Height
096 = 96" Cabinet Height
Cabinet Insulation 20 33, 34 AY = Standard 1/2" Fiberglass
EY = 3/8" Closed Cell Foam (IAQ)
FY = 1/2" Foil Faced
YY = None
Riser Mounting 21 35 F = Factory Supplied Shipped with Cabinet - for Field Installation
J = Factory Supplied Shipped Separate from Cabinet - for Field Installation
Riser Location 22 36 L = Left Cabinet Piping
R = Right Cabinet Piping
B = Back Cabinet Piping
Heating Options 23 37 H = Hydronic Heat
Y = None
Heating Control Option 39 A = 3-Way 1/2" Motorized Valve
B = 3-Way 3/4" Motorized Valve
Y = None
Wireless T'Stat Option 24 40 N = Factory Installed Wireless RF Receiver with Non-Programmable Thermostat
P = Factory Installed Wireless RF Receiver with 7-Day Programmable Thermostat
Y = None
Packaging 30 50 1 = Multipack Chassis or Single Crated Cabinet
2 = Multipack Cabinets - Multiple Cabinets on one pallet group
Extended Warranty 31 51 Y = None
V = 1 Year Extended Compressor Only Parts Warranty
W = 1 Year Extended Refrigerant Circuit Parts Warranty
E = 1 Year Extended Complete Unit Parts Warranty
C = 4 Year Extended Compressor Only Parts Warranty
R = 4 Year Extended Refrigerant Circuit Parts Warranty
P = 4 Year Extended Complete Unit Parts Warranty
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reCeiving and storage
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Receiving and Storage
Upon receipt of the equipment, check the carton and pallets
for visible damage. Make a notation on the shipper’s delivery
ticket before signing. If there is any evidence of rough handling,
immediately open the cartons to check for concealed damage.
If any damage is found, notify the carrier within 48 hours to
establish your claim and request their inspection and a report.
The Warranty Claims Department should then be contacted.
4'
6'
Cabinet Stacking (1 unit per crate)
Do not stack over three crates high at any time during trans-
portation or storage.
Unit back
Pallet front
Risers
Risers are factory supplied with
cabinet for eld installation.
Unit front
Note: Packaging has been tested and certied in accordance with the
International Safe Transit Association (ISTA), test procedure 3B.
Chassis (4 per skid)
Do not stack over two skid high at any time during transporta-
tion or storage. For storing, each carton is marked with “up”
arrows.
Storage and Operating Environment
Temporary storage at the job site must be indoor, completely
sheltered from rain, snow, etc. Units should not be installed in
environments that fall below freezing or exceed 140°F ambient.
Table 1: Cabinet packaging overall dimensions
Unit Size Cabinet Size
18 x 18 18 x 20 24 x 24
009-012
With Risers121"W x 29"H x 91.50" to 124.50"L – –
Without Risers 21"W x 27"H x 91.50" to 107.50"L – –
015-018
With Risers1_ 21"W x 31"H x 91.50" to 124.50"L –
Without Risers _ 21"W x 29"H x 91.50" to 107.50"L –
021-036
With Risers1_ – 27"W x 35"H x 91.50" to 124.50"L
Without Risers _ – 27"W x 23"H x 91.50" to 107.50"L
Note: 1 Risers are factory supplied with cabinet for eld installation.

reCeiving and storage
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Handling
Carefully check items against the bills of lading to verify all
crates and cartons have been received.Cabinets and Chassis
normally ship four to a pallet.
Carefully inspect all units for shipping damage. Report
damage immediately to the carrier and le a claim.
Check the unit data plate to be sure the unit electrical agrees
with the power supply available (Figure 1).
DO NOT handle units by the riser piping. Riser clamps hold the
riser in position; they are not designed to support the cabinet
weight. The clamps are removed after the unit is installed.
Figure 1: Unit components & descriptions - received as
assembled cabinet with chassis shipped separate
1
1a
1b
1b
2
3
4
Unit
Data Plate
Stub-out
Seals
Chassis
Data Plate
Component Descriptions (Assembled Cabinet)
1. Cabinet assembly complete (without chassis)
1a. Pipe riser sets (return, supply and condensate)
1b. Inner front panel and lter bracket
2. Cooling and heating chassis (shipped separate)
3. Return air grille/panel (accessory)
4. Double-deection diffuser (accessory)
Unit cabinets are factory assembled and wired and have
individual thermostat control capability. They are installed by
stacking one unit on top of the other. While installing, prevent
dirt and other foreign matter from entering the risers and plug-
ging lines or valves.
General Information
Daikin Vertical Stack units are designed for use in multiple oor
apartments, ofce buildings, hotels, nursing homes and other
similar applications. They require a minimum amount of oor
space and are designed for multiple discharge arrangement.
Installation and maintenance must follow accepted industry
practices as described in the ASHRAE Handbook, the National
Electric Code, and other applicable standards. Install this
equipment in accordance with regulations of authorities having
jurisdiction and with all applicable codes.
CAUTION
Sharp metal edges are a hazard, use care when servicing
to avoid contact with them.
WARNING
The installer must determine and follow all applicable
codes and regulations. This equipment presents hazards
of electricity, rotating parts, sharp edges, heat and weight.
Failure to read and follow these instructions can result in
property damage, severe personal injury or death. This
equipment must be installed by experienced, trained
personnel only.
CAUTION
Installation and maintenance are to be performed by
qualied personnel who are familiar with local codes and
regulations, and experienced with this type of equipment.

Prior to installing
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Disassembling Upper and Lower Cabinet
Sections
The Vertical Stack unit cabinet ships completely assembled. If
required, it may be disassembled into two (2) sections (upper-
fan/discharge cabinet) and (lower chassis/return air cabinet) to
make it easier to handle. To disassemble, do the following.
1. Remove risers (if received attached).
2 Remove the three (bottom row) screws on the back of the
unit as shown in Figure 2.
Note: Retain all screws for later use to reassemble unit in
reverse order as described in steps 1-6. Number of
screws will vary depending on unit size.
3. Carefully lay the unit down on its back and remove the
remaining eight (8) screws on the left and right side of the
cabinet (Figure 3).
4. Remove the ten (10) screws and lift off the front panel/lter
rack to gain access to the cabinet interior (Figure 4).
5. Locate and remove the six (6) screws located inside the
cabinet joining the upper and lower cabinet sections
(Figure 5).
Note: Pull the insulaton away from the walls of the cabinet
interior to get access to the screws.
6. Separate the lower return air cabinet section from the upper
blower/discharge cabinet section (Figure 6).
Figure 2: Remove three (3) screws (bottom row) on the
back of the unit.
Back of Unit
Three screws (bottom row)
Figure 3: Remove remaining eight (8) screws on the left
and right sides of the cabinet
Four (4) screws located
on left side of cabinet
Figure 4: Remove the ten (10) screws from the front panel/
filter rack.
Figure 5: Remove the six (6) screws located on the interior
of the unit.
Return air cabinet
section interior
Figure 6: Separate the lower cabinet section from the
upper cabinet.

diMensional data
Model VHF & VHW – 18" × 18" Cabinet – Size 009-012
Dimensions
Unit Size 009–018 (18" ˣ 18") Cabinet (Dimensions in inches)
Unit Height
‟A” B C D E F G J K L M N P Q R S T U V
80, 88,
92, 96 18.07 18.11 37.50 0.88 58.09 2.38 3.125 2.0 2.0 6.72 12.4 7.9 3.3 3.0 3.0 3.3 4.5 4.5
Discharge Openings (Dimensions in inches)
Unit Size Single Double Triple Single- Top Opening
009–012 W H W H W H W H
14 16 14 8 NR NR 12 12
Notes: NR = Not Recommended
80" high cabinet not available with side discharge, top discharge only.
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diMensional data
Model VHF & VHW – 18" × 20" Cabinet – Size 015-018
Dimensions
Unit Size 015–018 (18" ˣ 20") Cabinet (Dimensions in inches)
Unit Height
‟A” B C D E F G J K L M N P Q R S T U V
80, 88,
92, 96 18.07 20.00 37.50 0.88 58.09 2.38 3.125 2.0 3.0 6.72 12.4 7.9 3.3 4.0 3.0 3.12 4.5 4.5
Discharge Openings (Dimensions in inches)
Unit Size Single Double Triple Single- Top Opening
015–018 W H W H W H W H
14 16 14 8 14 8 12 12
Note: 80" high cabinet not available with side discharge, top discharge only.
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