Table of Contents

Advertisement

Installation Instructions
NOTE:
Read
the entire
instruction
manual
before
starting
the
installation.
NOTE:
Installer:
Make
sure the Owner's
Manual
and Service
Instructions
are left with the unit after installation.
TABLE
OF CONTENTS
PAGE
SAFETY
CONSIDERATIONS
.........................
1
INTRODUCTION
...................................
2
RECEIVING
AND INSTALLATION
.................
2-14
Check Equipment
..................................
2
Identify
Unit
....................................
2
Inspect
Shipment
.................................
2
Provide
Unit Support
...............................
2
Roof Curb
......................................
2
Slab Mount
.....................................
3
Field Fabricate
Ductwork
............................
3
Provide
Clearances
.................................
3
Rig and Place Unit
.................................
3
Inspection
......................................
3
Rigging/Lifting
of Unit
............................
3
Connect
Condensate
Drain
..........................
10
Install Flue Hood
..................................
10
Install
Gas Piping
.................................
11
Install Duct Connections
............................
12
Configuring
Units for Downflow
(Vertical)
Discharge
.....................................
12
Install Electrical
Connections
........................
13
High-Voltage
Connections
........................
13
Special
Procedures
for 208-V
Operation
..............
13
Control
Voltage Connections
.......................
13
Standard
Connection
.............................
14
Heat Anticipator
Setting
..........................
14
Transformer
Protection
...........................
14
PRE-START-UP
...................................
14
START-UP
.....................................
15-32
Check for Refrigerant
Leaks
.........................
15
Start-Up
Heating
& Make Adjustments
................
15
Check Heating
Control
...........................
15
Check Gas Input
................................
16
Adjust Gas Input
................................
16
Check Burner
Flame
.............................
18
Normal
Operation
...............................
30
Airflow
and Temperature
Rise ......................
30
Heating
Sequence
of Operation
.....................
30
Limit Switches
.................................
30
Rollout
Switch
.................................
30
Start-Up
Cooling
& Make Adjustments
................
30
Checking
Cooling
Control
Operation
................
30
Checking
& Adjusting
Refrigerant
Charge
............
31
Indoor Airflow
and Airflow
Adjustments
.............
31
Cooling
Sequence
of Operation
.....................
32
MAINTENANCE
................................
53-56
Air Filter
......................................
53
Indoor Blower
and Motor
.........................
53
A0g033
Fig. 1 - Unit 48VG-A
(Low NOx Model Available)
Induced
Draft (Combustion
Air) Blower
..............
54
Flue Gas Passageways
............................
54
Limit Switch
...................................
54
Burner
Ignition
.................................
54
Main Burners
...................................
54
Removal
of Gas Train
............................
54
Outdoor
Coil, Indoor Coil, & Condensate
Drain Pan
....
54
Outdoor
Fan
...................................
55
Electrical
Controls
and Wiring
.....................
55
Refrigerant
Circuit
...............................
56
Gas Input ......................................
56
Evaporator
Airflow
..............................
56
Puron Items
....................................
56
TROUBLESHOOTING
..............................
57
START-UP
CHECKLIST
............................
57
SAFETY
CONSIDERATIONS
Improper
installation,
adjustment,
alteration,
service
maintenance,
or
use
can
cause
explosion,
fire,
electrical
shock,
or
other
conditions
which
may
cause
death,
personal
injury,
or property
damage.
Consult
a qualified
installer,
service
agency,
or your
distributor
or branch
for information
or assistance.
The qualified
installer
or agency
must use factory-authorized
kits or accessories
when
modifying
this product.
Refer
to the individual
instructions
packaged
with the kits or accessories
when installing.
Follow
all safety codes.
Wear safety
glasses,
protective
clothing,
and work
gloves.
Have
a fire extinguisher
available.
Read
these
instructions
thoroughly
and
follow
all warnings
or cautions
included
in
literature
and
attached
to the
unit.
consult
local
building
codes, the current editions
of the National
Fuel Gas Code
(NFGC)
NFPA 54/ANSI
Z223.1,
and the National
Electrical
Code
(NEC)
NFPA 70.
In Canada refer to the current editions
of the National
Standards
of
Canada
CAN/CSA-BI49.1
and
.2 Natural
Gas
and
Propane
Installation
codes, and Canadian
Electrical
Code CSA C22.1
Recognize
safety information.
This is the safety-alert
symbol
/_.
When you see this symbol
on the unit and in instructions
or manu-
als, be alert to the potential
for personal
injury.
Understand
these

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 48VG-A and is the answer not in the manual?

Questions and answers

Table of Contents