Basis of Installation Memo
To: Select Contractors
From: Blair Richardson, EIT
Date: 27 April 2011
CC: John Pucciareli, Augusta Schools
Jerry Knowles, Investment Engineering
After reviewing the existing data room HVAC system and calculating the estimated space load
for the data room, we propose the following Basis of Installation Memo for the purpose of
obtaining contractor pricing.
Existing System Overview:
The existing data room AC system consists of one (1) 3-ton Mitsubishi Mr. Slim mini-split
system with low ambient baffle, and one (1) 2.5-ton Fujitsu Halcyon Inverter mini-split system.
There are two wall mounted units in the data room, one for each heat pump. The equipment that
is currently cooling the space is insufficient. However the equipment itself is fully functional.
New System Overview
After review of the engineering economics and several cooling options it was decide to keep
the existing system and supplement the cooling with a new system. It is the intention of this
Scope to provide a new primary cooling system which will handle cooling the space most of
the year with the existing Mitsubishi unit provides additional cooling on design days only to
meet the load and maintain the space set point of 72°F. The proposed Variable Refrigerant
Volume system is fully modulating and will run at a capacity to match the load. If after one
year the new system is found to be substantially larger than the demand load on the space,
the Mitsubishi, Fujitsu, and all accessory units will be removed completely.
Two (2) 4-ton concealed ceiling units will be suspended from the data room ceiling in new
ductwork (see attached sketch). One (1) 4-ton concealed ceiling unit will be installed above
the “café commons” room D133. The new fan coil unit will be ducted into the existing
16”x16” supply duct from VAV unit A-21. The 16” duct will be capped upstream of the new
fan coil unit to allow the existing VAV unit to continue to operate.
The concealed ceiling unit above D133 will provide both cooling and heating depending on
the season and temperature as read using a return mounted thermostat. The two data room
concealed ceiling units are cooling only and will be controlled by one thermostat located
within the space. All three of the units listed above will be piped to the outdoor condensing
unit. See attached submittal and sketches for equipment information and location.
engineering  commissioning  energy conservation  value since 1990
sparhawk mill • 81 bridge street. • yarmouth, maine 04096 • (207) 846-7726 • fax (207) 846-7728
Cony High School Data Room A/C
April 27, 2011
General Site Conditions
All work will occur during standard straight time hours. Special hours to accommodate
school functions will not be required. A mandatory pre-bid walk through will be held at the
owner’s discretion. Date and time will be provided to all bidders 5 business days prior to
meeting.
Any cutting and patching required as a result of mechanical and electrical work will be
provided by the Mechanical/Electrical contractor as part of their scope. Any fire stopping
required as a result of this mechanical and electrical work will be provided by the
Mechanical/Electrical contractor as part of their scope.
Equipment
See Daikin proposal for equipment selections. Do not include pricing, just list the
equipment
Provide all accessories for a complete and functional Variable Refrigerant Volume system
with heat recovery.
Equipment to be located as outlined on attached schematics. The indoor equipment shall be
located above the ceiling where removable ceiling exists. In spaces with no finished ceiling;
units will be installed as high as possible. Install all mechanical refrigerant piping in a neat
and orderly manner in order to minimize affected area and ceiling tile removal.
Controls Sequence
Sequence of operation for this new Daikin system is as follows. The Daikin system is the
primary source of cooling for the areas served and will run year round. The system will
modulate to meet the cooling load of the data room space. On a design day when the
Daikin system cannot maintain the data room space at set point (72°F) the existing
Mitsubishi (set point of 74°F) unit will come on until the room load is met. Once the room
load is satisfied the Mitsubishi unit will power down so that the Daikin system is maintaining
the room set point. The Fujitsu unit will have a set point of 76°F and operate with the same
function as the Mitsubishi unit.
The Daikin system will be tied into the BAS (Siemens). Provide and install BACnet gateway
for system interface. All work for BAS interface will be provided as part of the mechanical
contractor’s scope. The ducted unit above D133 will operate to maintain a temperature set
point measured from the return mounted temperature sensor.
The BAS will see equipment status and show alarms for equipment failure and high
temperature in the data room.
Sheet Metal
See attached sketches for unit location and existing ductwork layout.
Page 2 of 3
Cony High School Data Room A/C
April 27, 2011
Custom fabricate duct for data room AC units. See sk-1 for conceptual design.
Install the new FXMQ unit above the t-bar ceiling. Install unit with/on vibration isolators.
Provide duct connections for the new FXMQ unit to the existing 16” round supply duct.
Manufacture and install all new fittings, connections and ductwork pieces per SMACNA
standards. Provide a flex connection on the supply and return connection to the unit.
Provide flexible duct connection to new ceiling return. Mount ceiling grill in existing t-bar
grid. Grill to be sized for 1,200 cfm and to match existing return grills in color, style and
manufacturer. In the absence of manufacturer information provide grill by E.H. Price, look
and color to match existing.
Provide return filter in return grille.
Refrigeration
Install all mechanical refrigerant piping in a neat and orderly manner in order to minimize
affected area and ceiling tile removal.
All refrigerant piping shall be labeled as to service ie: suction, liquid, discharge.
Both refrigerant lines (suction and liquid) shall be insulated with “armoflex” insulation.
Outside refrigerant lines shall have a vinyl/plastic covering attached to the brick façade so
that the installations of the lines are more ascetically pleasing.
Electrical
See the attached Daikin Proposal for wiring diagram. See attached Daikin Submittals for
individual equipment power requirements. See attached sketches for approximate
equipment location.
Miscellaneous Installation and Factory Start Up
Install all equipment, and piping per manufacturers recommendations and applicable
building codes for the City of Augusta and State of Maine.
Provide factory start-up for equipment as part of contract. Provide one 8-hour day of training
to necessary facilities personal as determined by the Owner. Notify the owner and engineer
5 business days prior to the training date of said date.
Upon completion of installation rebalance the existing branch ductwork from VAV A21 to
match original design flows at each individual grill. Balance new unit and branch ductwork to
provide 1,200 cfm total flow +/- 5%. Divide cfm evenly between all supply grills.
Page 3 of 3
Produced on 4/19/2011 with Xpress V5.4.5 - database Central USA 7.9
Project name
Reference
Client name
Revision
CONEY HIGH SCHOOL
F W WEBB
INESTMENT
7
Selection parameters of the indoor units can be found in the specific Indoor unit type engineering data book
Selection parameters of the outdoor units can be found in the specific Outdoor unit engineering data book
Only the data published in the data book are correct. This program uses close approximations of these data.
1. Material List
Model
REMQ96PATJ
BSVQ60PVJU
BSVQ96PVJU
FXMQ48PVJU
KHRP25M73TU
KHRP26A33T
DMS502B71 (128 GROUPS)
BRC1E71
KRP1B71
BHFP26P90U
Piping 3/8"
Piping 1/2"
Piping 5/8"
Piping 3/4"
Piping 7/8"
Piping 1 1/8"
Qty
Description
2
1
1
3
1
1
1
2
2
Heat recovery VRV PA R410A (208-230V)
Branch selector unit R410A
Branch selector unit R410A
M (DC) - Concealed DC Ducted (Medium Static)
REFNET branch piping kit
REFNET branch piping kit
Navigation Wired Remote Controller
Adaptor PCB (Aux Heat, Humidifier, OSA, Damper etc) FXSQ/FXMQ/FXNQ/FXHQ/FXLQ/FXOQ
1 Outdoor Multi Connection Pipe Kit - VRV P Series HR
172.0ft
10.0ft
196.0ft
10.0ft
20.0ft
88.0ft
2. Indoor Unit Details
2.1. Table of Abbreviations
Name
FCU
Tmp C
TC
SC
Tmp H
HC
Airflow
Sound
PS
MCA
MOP
WxHxD
Wght
PI-C 50Hz
PI-C 60Hz
PI-H 50Hz
Logical name of the device, possibly preceeded by room name
Device model name
Indoor conditions in cooling (dry bulb temp. / RH)
Available total cooling capacity
Available sensible cooling capacity
Indoor temperature in heating
Available heating capacity (integrated heating capacity)
Supplied airflow at low and high fan speed
Sound pressure low and high
Power supply (voltage and phases)
Minimum Circuit Amps
MOP
WidthxHeightxDepth
Weight of the device
Power input in cooling at 50Hz
Power input in cooling at 60Hz
Power input in heating at 50Hz
The Xpress Program is property of Daikin Europe NV. Daikin Europe NV cannot be held liable for any inaccuracy, reliability of the outcome of the Xpress Program.
Page 1
PI-H 60Hz Power input in heating at 60Hz
2.2. 1 - REYQ192PATJ
Actual capacity data at conditions and combination ratio (75%) as entered
Name
1
2
3
Total
Name
1
2
3
FCU
Tmp C
°F
FXMQ48PVJU
FXMQ48PVJU
FXMQ48PVJU
Sound
dBA
40-44
40-44
40-44
PS
230V 1ph
230V 1ph
230V 1ph
TC
BTU/h
75.2 / 50%
75.2 / 50%
75.2 / 50%
MCA
A
37674
37595
35598
110867
MOP
3.4 15A
3.4 15A
3.4 15A
SC
BTU/h
Tmp H
°F
30248
30214
29374
89836
WxHxD
inch
55.1x11.8x27.6
55.1x11.8x27.6
55.1x11.8x27.6
HC
BTU/h
Airflow
cfm
68.0
68.0
68.0
31200 989-1377
31200 989-1377
31200 989-1377
93601
Wght
lbs
PI-C 50Hz
kW
PI-C 60Hz
kW
PI-H 50Hz
kW
PI-H 60Hz
kW
101
101
101
Outdoor unit placed 164.0ft above the indoor units.
The minimum connection ratio for this height difference is 50%.
3. Outdoor Unit Details
3.1. Table of Abbreviations
Name
Model
Comb
Tmp C
CC
Tmp H
HC
Piping
Bse Refr
Logical name of the device
Device model name
Combination percentage
Outdoor temperature in cooling
Cooling capacity
Outdoor temperature in heating
Heating capacity (integrated heating capacity)
Longest equivalent length from indoor unit to outdoor unit
Standard factory refrigerant charge (5m actual piping length)
excluding extra refrigerant charge
For calculation of extra refrigerant charge refer to the databook
Ex Refr
Extra refrigerant charge
PS
Power supply (voltage and phases)
MCA
Minimum Circuit Amps
RLA
Compressor(s) Rated Load Amps
MSC
Compressor(s) Max. Starting Current
MOP
MOP
WxHxD
WidthxHeightxDepth
Wght
Weight of the device
EER
EER value at nominal conditions
COP 47°F COP value at nominal conditions and ambient temperature of 47°F
The Xpress Program is property of Daikin Europe NV. Daikin Europe NV cannot be held liable for any inaccuracy, reliability of the outcome of the Xpress Program.
Page 2
3.2. Outdoor Details
Name
1
Model
REYQ192PATJ
Name
1
1
2
Tmp C
°F
75
Model
PS
REYQ192PATJ 230V 3ph
* REMQ96PATJ
* REMQ96PATJ
BSVQ96PVJU
230V 1ph
BSVQ60PVJU
230V 1ph
Name
EER
1
Comb
%
CC
BTU/h
87.0
160848
MCA
A
RLA
A
Tmp H
°F
HC
BTU/h
-4.0
MSC
A
Piping
ft
124802
MOP
193.7
WxHxD
inch
74.0x66.1x30.1
36.1
36.1
0.1
0.1
24.6
24.6
131
131
Bse Refr
lbs
39.7
Ex Refr
lbs
13.7
Wght
lbs
1120
50A
50A
15.3x8.1x12.8
13.3x8.1x12.8
33
31
COP 47°F
10.7
3.2
3.2.1.
1 - REYQ192PATJ
Piping Limitations
Maximum total length
Maximum longest actual length
Maximum longest equivalent length
Maximum main pipe length (size up of main pipe required if longer)
Maximum length first branch to last branch (size up of intermediate pipes required if
longer)
Maximum length first branch to indoor units
Maximum length of last branch to indoor units
Maximum length difference between longest and shortest distance to indoor units
Maximum height difference, outdoor unit below indoor units
Minimum connection ratio, outdoor unit below indoor units
Maximum height difference, outdoor unit above indoor units
Minimum connection ratio, outdoor unit above indoor units
Maximum height difference between indoor units
Connection ratio range
Refrigerant pipe diameters
H/L Equalizing Pipe Diameter
3280.8ft
541.3ft
623.4ft
295.3ft
131.2ft
295.3ft
131.2ft
131.2ft
295.3ft
110%
295.3ft
80%
49.2ft
50-200%
5/8" (liquid) x 1 1/8" (gas suction) x 1 1/8" (gas
discharge)
3/4"
Pipe Capacities
Maximum Capacity Index
53.9
71.9
110.9
161.9
> 161.9
Main pipe size up
Diameters
3/8"x5/8"x1/2"
3/8"x3/4"x5/8"
3/8"x7/8"x3/4"
1/2"x1 1/8"x3/4"
5/8"x1 1/8"x1 1/8"
3/4"x1 1/8"x1 1/8"
The Xpress Program is property of Daikin Europe NV. Daikin Europe NV cannot be held liable for any inaccuracy, reliability of the outcome of the Xpress Program.
Page 3
4. Piping Diagrams
Pipes marked with * in the diagrams must be connected using the reducing joint. Piping Limitations differ from
VRV-III-S to VRV III (P-Series) so always check with the Engineering Data Books to verify allowable piping lengths,
pipe sizing, REFNET rules, and additional refrigerant calculations. In summary, VRV-III-S units allow up to 492ft
Actual, 164ft (130ft) Vertical, 130ft from 1st REFNET and 1000ft Total. VRV III (P-Series) units allow up to 540ft
Actual, 164ft (295ft) Vertical, 295ft from 1st REFNET and 3280ft Total.
4.1. Piping 1
The Xpress Program is property of Daikin Europe NV. Daikin Europe NV cannot be held liable for any inaccuracy, reliability of the outcome of the Xpress Program.
Page 4
5. Wiring Diagrams
P1P2 = 18-2 AWG 2 core non screened stranded wire (non polarity wiring system)
F1F2 = 18-2 AWG 2 core non screened stranded wire (non polarity wiring system)
5.1. Centralized Controllers
bacnet gateway
DMS502B71 (128 GROUPS)
L1, L2
Model
Series
Description
DMS502B71 (128 GROUPS) bacnet gateway
PS
Max. outdoors
Max. indoor groups
230V 1ph
5.2. Wiring 1
1
REYQ192PATJ
1
BSVQ96PVJU
IN F1/F2
OUT F1/F2
L1, L2 0.1A 1ph
1
FXMQ48PVJU
F1/F2
IN F1/F2
2
FXMQ48PVJU
L1, L2, L3
36A 3ph
F1/F2
REMQ96PATJ
Q1/Q2
L1, L2, L3
2
BSVQ60PVJU
36A 3ph
OUT F1/F2
L1, L2 0.1A 1ph
F1/F2
10A 1ph
P1/P2
L1, L2 3.4A 1ph
3
FXMQ48PVJU
IN F1/F2
BRC1E71
L1, L2 3.4A 1ph
REMQ96PATJ
Q1/Q2
P1/P2
P1/P2
BRC1E71
L1, L2 3.4A 1ph
6. Device Options
6.1. Outdoor Unit Options
Model
Description
Used by
BHFP26P90U Outdoor Multi Connection Pipe Kit - VRV P Series HR 1 [REYQ192PATJ]
6.2. Indoor Unit Options
Model
Description
Used by
KRP1B71 Adaptor PCB (Aux Heat, Humidifier, OSA, Damper etc) - FXSQ/FXMQ/FXNQ/FXHQ/FXLQ/FXOQ 1 [FXMQ48PVJU] 2 [FXMQ48PVJU]
The Xpress Program is property of Daikin Europe NV. Daikin Europe NV cannot be held liable for any inaccuracy, reliability of the outcome of the Xpress Program.
Page 5