Transcript Slide 1
2010 Rooftop
Training Webinair
High Efficiency
Models / Sizes
Type
Carrier
Bryant
YAC
48TC
580J
3-12.5 tons
PAC
50TC
558J
3-12.5 tons
PHP
50TCQ
548J
3-8.5 tons
Unit Size Designations Include Quantity of Compressors
Indicator
A08 = 1-Compressor, 7.5 tons
D08 = 2-Compressor, 7.5 tons
Ultra High Efficiency
Models / Sizes
Type
Carrier
Bryant
YAC
48HC
581J
3-12.5 tons
PAC
50HC
551J
3-12.5 tons
PHP
50HCQ
549J
3-8.5 tons
Unit Size Designations Include Quantity of Compressors
Indicator
A08 = 1-Compressor, 7.5 tons
D08 = 2-Compressor, 7.5 tons
Carrier Model Number Identification (Sample)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
4 8 T C D A 0 4 A 1 A 5 - 0 A 0 A 0
48 Gas Ht
IFM Options
50 Elec Ht
Coil Coating
Options
TC-High Eff
HC Ultra High Eff
Voltage
Heat Size
Factory Revision
D-LH; E-MH; F-HH
Base Unit Controls
L-Nox LH; M-Nox MH; N-Nox HH
0-ElectroMechanical
S-SS LH; R-SS MH; T-SS HH, etc.
1-PremierLink
Refrigerant Options
A-Std System
D- 2 comp
2-RTU-MP Control
Intake/Exhaust Opt
Unit Sizes
3-10 ton
Smoke Detector Option
Service Options
Electrical Options
Packaging
Options
Bryant Model Number Identification (Sample)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
5 8 0 J E 0 6 A 0 7 2 A 1 A 0 A A 580J High EffGas/Elect
581J Ultra HiGas/Elect
558J High Eff Elect/Elect
Indoor Fan
Options
548J High Eff Ht Pump
Voltage
Stg, Clg Coil Options
A=1 stg, Al/Cu-Al-Cu
Cooling Tons
D=1 stg, E-coat-Al/Cu
06 = 5 ton
G=2 stg, Al/Al-Al/Cu
08=7.5 ton
14=12.5 ton
Coil Coating
Options
Ref System/Gas Options
Heat Level
A=Std Ref, Nat Gas Heat
060=60,000
B=Std Ref, Nat Gas Heat, Low NOx
090=90,000
D= 2-stg Comp, Al HX
150=150,000
F=2-stg Comp, SS HX
Design Rev
Factory Options
Packaging
High Efficiency Models
Puron® (R-410A)
Fixed-Bore Acutrol Metering
Revised Liquid Header Designs
Revised Liquid Header
Original Header
Revised Coil Design
(Can contain dimples or no dimples)
Rooftop Unit Installation
3~12.5 ton SRT
48/50TC; 48/50HC; 48/50TM
580/558J; 581/551J; 580/558F
Outline
• Warnings – Caution
Safety
Fire Explosion
Electrical Shock
Refrigerant
Cut Hazards
• Pre Planning
• Placement/Setting Unit
Curb
• Existing
• New
Attach duct
Lifting/Setting Unit
• Strapping/Top Crate
• Unit Placement
Cautions:
• Condensate Drain
• Through the Pan/Curb
Connections
• Preparing unit for Start-Up
Outside Air Hood
Flue Hood
Gas Piping
Condensate
Electrical Connections
• Power
• Thermostat
• Economizer Assembly
Types
Hood Assembly
Wiring Connection
• 2~10 vdc
• 4~20 ma
• Safety
Improper installation, modification, service and
maintenance may cause personal and/or property
damage.
Contact qualified installer, servicer or distributor for
information or assistance
Wear safety glasses and work gloves.
Have quenching cloth and fire extinguisher available
Read all Installation Instructions prior to beginning
work
Follow all Local and National building and electrical
codes
• Fire Explosion
Disconnect gas piping from unit when leak
testing
DO NOT exceed gas pressures greater than
0.5 psig/3450 Pa to gas valve, damage will
occur
If pressure testing BELOW 0.5 psig, isolate
gas valve from piping using shut-off valve
• Electrical Shock
Before servicing or maintaining unit, turn off
power supply at disconnect/breaker and
install Lock-Out tag
Test for voltage with multi-meter prior to
performing service
Some installation may have more than one
power source, i.e. dual power wiring and units
with heat strips
• Refrigerant
Puron® (R-410A) refrigerant systems operate
at higher pressures than R-22 systems
Do not use R-22 components or service
equipment on Puron® systems
POE oil can cause damage to roof of building.
If spilled use dry absorbent materials to
eliminate spill.
• Cut Hazards
Always wear gloves, protective clothing and
safety glasses when handling sheet metal
components. Failure to do this can result in
cuts or abrasions.
Use caution when placing sheet metal
components on rubber membrane roofing.
Sharp edges can penetrate roofing.
Pre Planning
• Job Survey
Consult Local Bldg Codes, NEC (National Electric Code) and
ANSI/NFPA 70 for installation requirements
Determine unit location
Check for overhead obstructions (for lifting) and proximity to
walls or parapets
• Plan for Unit Location
Proper curb/unit support within structure
Provide for Minimum Service and Safety clearances
Clearances to combustible materials
Allow for adequate Combustion and Ventilation
Pre Planning
• Service Clearance
A: 48” Unit disconnect
36” If “B” < 12”
18” No disconnect, C/O
18” Service
12” Minimum clearance
B: 42” Grounded surface
(metal, masonry wall)
36” Non-electrically
conductive (wood)
Flue products within 10 ft
C: 36” Condensate drain
18”Minimum clearance
D: 48” Flue to combustible material
42” Grounded surface
36” Non-electrically conductive surfaces
Fresh Air Intakes within 10 ft
Placement/Setting Unit
• Sequence of Installation
Install Curb
Attached ductwork to curb
Install Assy “Through the Pan” fittings
Install Assy “Through the Curb” fittings
Prepare Condensate drain (Center Drain)
Rig and place unit
Install Outdoor Air Hood
Install Flue hood
Install Gas piping
Install Condensate drain connections
Make Electrical Connections: Power – Control
Install other accessories
Placement/Setting Unit
• Curb
Installation
• Level within tolerances
•
•
•
•
A-B 0.5”; B-C 1.0”;
A-C 1.0”
Insulate curb
Install cant strips
Install roof felt
Install flashing
Curb Gaskets
C
A
Curb Gasket Placements
B
Placement/Setting Unit
• Attach Duct
To roof curb NOT unit (if vertical application)
Curb gasket applied over duct flanges
Maximum Cabinet Static*
* Measured below roof curb
003~014 // 024~150
Return Air w/o Economizer
-0.35 in w.c.
Return Air w/ Economizer
-0.45 in w.c.
• Lifting/Setting Unit
• Use top crate of unit or spreader bars
when lifting.
– Carefully lower top crate from roof once
unit placed on curb
• Review the maximum weights of the
units as listed in the Installation
Instructions prior to lifting
Placement/Setting Unit
prior to setting unit
• Cautions:
1) Condensate Drain
• If condensate drain will
exit unit horizontally
proceed to setting unit
• If condensate drain will
exit through the pan
center drain and
through the roof curb,
install PVC fitting prior
to setting unit.
• If not using center drain
outlet, check to ensure
outlet plug is installed
and tight
2) Through the Pan
Connections
• Provides capability to draw
power, control wiring and
field supplied gas piping
• Install prior to setting unit on
curb
3) Through the Curb
Connections
• Provides capability to run
gas line up “under the curb”
then exit “side of curb” to
connect to unit
Placement/Setting Unit
prior to setting unit
• Through the Pan
• Through Curb Gas
connection
Center Condensate Drain Hole
Placement/Setting Unit
• Unit Placement
04~07 size
Existing Curb
• 04 ~07 units
– ¼” between side rails
and curb
– 0.0” on duct end
between end rail and
curb
– Overhang Condenser
end ¼”
• 08 ~ 14 units
– ¼” between side rails
and curb
– 0.0” on duct end
between end rail and
curb
– Overhang Condenser
end 3 5/16”
– Flush to Curb Label
08-12 size
Adaptor Curbs
• Ensure “duct end” of unit is
FLUSH to the end of the
curb for proper sealing
Flush to Curb Label on
Blower Access Panel
Preparing unit for Start-Up
• Outside Air Hood
Filter Access
Panel
Hood box located
behind filter access
panel - Remove
Indoor coil access
panel is “Economizer
Hood Top” – swing up
Attach hood sides to
hood top and attach
to unit panel.
Attach hood divider
to hood sides
Indoor Coil
Access panel
Economizer Assembly
• Types
Manual
• Can be used in
Vertical/Horizontal
configuration
• Adjustable from 0% - 100%
Two Position
• Can be used in
Vertical/Horizontal
configuration
• Adjustable from 25% - 100%
Modulating
• Different Vertical/Horizontal
• Provides for Minimum and
Min to100% OA capability
based on OD conditions
Economizer Assembly
• Wiring Connection
• Molex connector
located in
R/A section
2-10 vdc
Single or
Two-Stage stat
4-20 ma
• Used with PremierLink –
ComfortLink
• No Economizer Controller
mounted
• 12 pin Molex Connector
• 500 Ohm Resistor installed
in econo harness
Preparing Unit for Start-Up
• Flue Hood
Secured to base pan beside
Burner compartment
Attach with two screws
Clearance to combustibles:
48”
• Flue Deflector (Accessory)
CRFLUEDS001A00
2 ~ 12.5 ton units
Reduces clearance to
combustibles to 18”
Preparing Unit for Start-Up
•
Gas Piping
Local/National Codes
US (NFPA54/ANSI Z223.1 NFGC)
CAN (CAN/CSA B149.1 & B149.2)
•
Through the Curb
Standard gas design
Up to 2000’
Convertible up to 6000’
•
•
•
US: Derate 4% per 1000’ above sea level
CAN: Derate 10% between 2000’ – 4500’
Gas pressure at GV inlet
Nat Gas: Min 4”w.c. - Max 13”w.c.
LP Gas: Min 11”w.c. - Max 13”w.c. (req’s Accy Kit)
Fitting size: ½” for 03~08 (024-090) units; ¾” 012~014
(120~150) units
•
•
Size piping for maximum pressure
drop of 0.5”w.c. between unit GV and gas source
Three Gas Line Approaches
Horizontal to GV (across roof)
Thru-Curb (Kit required)
Thru-Base Pan (Kit required)
•
Always use “Back-Up” wrench on Gas Valve neck
(wrench fitting) when connecting piping
Through the Base Pan
Preparing Unit for Start-Up
• Condensate Drain
¾” Connection: Two locations
• Horizontal
–
–
–
–
–
–
Exiting out the duct connection end of unit
Piping pitch: 1 inch per 10 ft away from unit
Do not use pipe smaller than ¾”
4 inch trap recommended
Protect from freezing
Check “Center Drain Plug” for tightness
prior to setting unit on curb
• Center
– Exiting below unit from center of
condensate pan
– Remove “Center Drain Plug”
– Piping pitch: 1 inch per 10 ft away from unit
– Do not use pipe smaller than ¾”
– 4 inch trap recommended
– Protect from freezing (if necessary)
Preparing Unit for Start-Up
• Electrical Connections
Non Powered Convenience Outlet (C/0):
• Requires separate 125 vac 15amp circuit
Unit Powered: Incorporates step down transformer
• Convenience Outlet
– Connect transformer primary per diagram
– Powered (always energized): Connect C/O wires to “Line”
side of disconnect or incoming power, or local codes
– De-energized (powered with disconnect): Connect C/O wires
to “Load” side of disconnect, or local codes
• Power:
All units except 208/230 vac factory wired for voltage
shown on unit name plate.
• 208 vac requires Low Voltage transformer wiring.
Connect black from 230 vac tap on transformer to 208
vac transformer tap.
Units without FIOP Disconnect
• Field power wires connect to Compressor Contactor “C”
terminals 11 – 13 and Indoor Fan Contactor
Units with FIOP Disconnect
• Remove factory test leads on Line side of Disconnect,
discard
• Additional info later
Preparing Unit for Start-Up
• Field Control Wiring
Thermostat:
• Single or Two Stage
PremierLink
• Follow SI wiring
RTU-MP (FIOP only)
Microchannel Novation™
Condensing Coils
Outline
•
•
•
•
What is Novation™ Condenser Coil
Cleaning Procedures
Repair Procedures
RCD Repair Kit
What is Novation™ Condenser Coil
• Novation Coil
Al/Al
Construction
Refrigerant Flow
Cleaning Procedures
• Cleaning
No Solvents
Air Pressure
Repair Procedures
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Novation™ RCD Repair Kit
• 50TJ660007
• Note:
If refrigerant
system is
open, then
replace liquid
line drier