ꢀꢁꢂꢃꢄꢅꢁꢆꢇ
Propane Heater
20,000 BTU/HR Model PH20-30A
With Automatic Gas Ignition Control
Installation Operation Service
ꢀ
ꢀ
ꢀꢁꢂꢃꢄꢅꢆꢇꢅ ꢆꢈꢉꢄꢈꢉꢊ
Section One____________________________________________________________ 3
Introduction and Description __________________________________________________ 3
Description _______________________________________________________________________3
Section Two ___________________________________________________________ 4
INSTALLATION INSTRUCTIONS ____________________________________________ 4
Pre-Installation Inspection____________________________________________________________ 4
Location and Mounting ______________________________________________________________ 4
Electrical Requirements (FIG.1) _______________________________________________________ 6
Fuel Requirements (FIG.2) ___________________________________________________________ 6
Exhaust and Combustion Air Requirements (FIG.3)________________________________________ 7
Heater Mounting Dimensions (FIG.6)___________________________________________________ 8
Fuel Connections___________________________________________________________________9
Electrical Connections______________________________________________________________ 10
Section Three _________________________________________________________ 12
OPERATION ______________________________________________________________ 12
Controls and Indicators _____________________________________________________________ 12
Theory of Operation _______________________________________________________________ 13
Starting _________________________________________________________________________ 14
Section Four __________________________________________________________ 15
TROUBLESHOOTING and DIAGNOSTICS ___________________________________ 15
Fault Codes ______________________________________________________________________15
Troubleshooting___________________________________________________________________16
Burner Head Maintenance___________________________________________________________ 16
Preseason Maintenance, Annual Service________________________________________________ 17
Section Five __________________________________________________________ 18
PARTS LIST ______________________________________________________________ 18
Installation Hardware ______________________________________________________________ 18
Case and Heat Exchanger ___________________________________________________________ 19
Fuel, Ignition, and Electronic Control System____________________________________________ 20
Blower and Motor Assembly_________________________________________________________ 21
Comfort Control and Remote Harness__________________________________________________ 22
Section Six ___________________________________________________________ 23
OPTIONS and ACCESSORIES_______________________________________________ 23
Remote Calibrated Thermostat Installation ______________________________________________ 24
External Diagnostic Light Installation__________________________________________________ 25
ꢋꢄꢌꢉꢍꢆꢈꢅꢎꢈꢄ
ꢏꢈꢉꢐꢆꢑꢒꢌꢉꢍꢆꢈꢅꢁꢈꢑꢅꢓꢄꢊꢌꢐꢍꢔꢉꢍꢆꢈ
ꢓꢄꢊꢌꢐꢍꢔꢉꢍꢆꢈ
ꢋꢕꢖ ꢏꢗꢏ ꢘꢀꢏꢎꢙꢋ
NOTE
ꢀ
ꢋꢄꢌꢉꢍꢆꢈꢅꢀꢚꢆ
ꢏꢙꢋꢀꢘꢛꢛꢘꢀꢏꢎꢙꢅꢏꢙꢋꢀꢜꢝ ꢀꢏꢎꢙꢋ
ꢕꢐꢄ ꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈꢅꢏꢈꢊꢔꢄꢌꢉꢍꢆꢈ
ꢀꢀꢁꢂꢃꢄꢃꢅ
Read all warning
tags supplied
with the heater.
Perform all duties
indicated on the
tags.
NOTE
ꢀ
ꢛꢆꢌꢁꢉꢍꢆꢈꢅꢁꢈꢑꢅ!ꢆꢒꢈꢉꢍꢈ"
CAUTION
ꢀ
The heater must be shielded against direct contact from rain and snow.
ꢀꢀꢁꢂꢃꢄꢃꢅ
LOCATION AND MOUNTING
CAUTION
ꢀꢆ
ꢀꢀꢁꢂꢃꢄꢃꢅ
#ꢄꢈꢄꢐꢁꢃꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈ
ꢀꢀꢁꢂꢃꢄꢃꢅ
ꢖꢃꢄꢌꢉꢐꢍꢌꢁꢃꢅꢜꢄ$ꢒꢍꢐꢄ%ꢄꢈꢉꢊꢅ
ꢗꢒꢄꢃꢅꢜꢄ$ꢒꢍꢐꢄ%ꢄꢈꢉꢊꢅ
#ꢄꢈꢄꢐꢁꢃꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈ
ꢀꢀꢁꢂꢃꢄꢃꢅ
ꢆ
ꢖ&'ꢁꢒꢊꢉꢅꢁꢈꢑꢅ ꢆ%ꢂꢒꢊꢉꢍꢆꢈꢅꢘꢍꢐꢅꢜꢄ$ꢒꢍꢐꢄ%ꢄꢈꢉꢊꢅ
#ꢄꢈꢄꢐꢁꢃꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈ
)ꢄ*ꢄꢐꢁ"ꢄꢅ)ꢆꢑ+ꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈꢅ
ꢀ
(ꢄꢁꢉꢄꢐꢅ!ꢆꢒꢈꢉꢍꢈ"ꢅꢓꢍ%ꢄꢈꢊꢍꢆꢈꢊꢅ
ꢗꢒꢄꢃꢅ ꢆꢈꢈꢄꢌꢉꢍꢆꢈꢊ
ꢀꢀꢁꢂꢃꢄꢃꢅ
CAUTION
ꢀꢆ
NOTE:
ꢀ
CAUTION
ꢀꢆ
ꢖꢃꢄꢌꢉꢐꢍꢌꢁꢃꢅ ꢆꢈꢈꢄꢌꢉꢍꢆꢈꢊ
ꢀꢀꢁꢂꢃꢄꢃꢅꢆꢇ
Symbol
Description
ꢋꢄꢌꢉꢍꢆꢈꢅꢀ'ꢐꢄꢄ
ꢎꢕꢖꢜꢘꢀꢏꢎꢙ
ꢆꢈꢉꢐꢆꢃꢊꢅꢁꢈꢑꢅꢏꢈꢑꢍꢌꢁꢉꢆꢐꢊ
Comfort Control Assembly
Controls and Indicators
Table 2. Control and Indicator Functions
Function
Name
ꢀ
ꢀ
Comfort Control
ꢀ'ꢄꢆꢐ+ꢅꢆꢇꢅꢎꢔꢄꢐꢁꢉꢍꢆꢈ
OPERATION
POWER UP/STANDBY
HEAT MODE
FAILURE TO LIGHT - LOCKOUT
ꢋꢉꢁꢐꢉꢍꢈ"
Cab or Crew Area
Comfort Control
Comfort Control
Comfort Control
Cargo or Beverage
Comfort Control
Comfort Control
Heating
Shutdown
Comfort Control
ꢋꢄꢌꢉꢍꢆꢈꢅꢗꢆꢒꢐ
ꢀꢜꢎꢝ)ꢛꢖꢋ(ꢎꢎꢀꢏꢙ#ꢅꢁꢈꢑꢅꢓꢏꢘ#ꢙꢎꢋꢀꢏ ꢋ
ꢗꢁꢒꢃꢉꢅ ꢆꢑꢄꢊ
Table 3
Error Codes
Problem
Number
of
Remedy
Flashes
ꢀꢐꢆꢒꢂꢃꢄꢊ'ꢆꢆꢉꢍꢈ"
TABLE 5.
TROUBLESHOOTING CHART
green light is not
on.
green light is on.
)ꢒꢐꢈꢄꢐꢅ(ꢄꢁꢑꢅ!ꢁꢍꢈꢉꢄꢈꢁꢈꢌꢄ
To set the spark gap:
ꢕꢐꢄꢊꢄꢁꢊꢆꢈꢅ!ꢁꢍꢈꢉꢄꢈꢁꢈꢌꢄ,ꢅꢘꢈꢈꢒꢁꢃꢅꢋꢄꢐ*ꢍꢌꢄ
Description
Daily Weekly Monthly Pre-
season
Service Tip
ꢀ
ꢋꢄꢌꢉꢍꢆꢈꢅꢗꢍ*ꢄ
ꢕꢘꢜꢀꢋꢅꢛꢏꢋꢀ
General
ꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈꢅ(ꢁꢐꢑꢚꢁꢐꢄ
1
2
3
5
6
4
7
Index Number
Part Number
Description
ꢁꢊꢄꢅꢁꢈꢑꢅ(ꢄꢁꢉꢅꢖ&ꢌ'ꢁꢈ"ꢄꢐ
1
2
3
6
4
5
7
8
9
10
11
12
13
Index #
Part #
Description
Index #
Part #
Description
ꢀ
ꢗꢒꢄꢃ,ꢅꢏ"ꢈꢍꢉꢍꢆꢈ,ꢅꢁꢈꢑꢅꢖꢃꢄꢌꢉꢐꢆꢈꢍꢌꢅ ꢆꢈꢉꢐꢆꢃꢅꢋ+ꢊꢉꢄ%
1
2
3
4
6
5
7
8
9
10
11
12
13
14
Index #
Part #
Description
)ꢃꢆꢚꢄꢐꢅꢁꢈꢑꢅ!ꢆꢉꢆꢐꢅꢘꢊꢊꢄ%ꢂꢃ+
1
2
3
4
5
6
7
8
9
Index #
Part #
Description
*
5158212 Complete Blower and Motor
Assembly
ꢆ%ꢇꢆꢐꢉꢅ ꢆꢈꢉꢐꢆꢃꢅꢁꢈꢑꢅꢜꢄ%ꢆꢉꢄꢅ(ꢁꢐꢈꢄꢊꢊ
1
2
Index #
Part #
Description
ꢋꢄꢌꢉꢍꢆꢈꢅꢋꢍ&
ꢎꢕꢀꢏꢎꢙꢋꢅꢁꢈꢑꢅꢘ ꢖꢋꢋꢎꢜꢏꢖꢋ
1
2
2-1
3
Index #
Part #
Description
ꢜꢄ%ꢆꢉꢄꢅ ꢁꢃꢍꢂꢐꢁꢉꢄꢑꢅꢀ'ꢄꢐ%ꢆꢊꢉꢁꢉꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈ
Plug Thermostat In Here
PH20-30A Heater
Calibrated Thermostat P/N51643
ꢖ&ꢉꢄꢐꢈꢁꢃꢅꢓꢍꢁ"ꢈꢆꢊꢉꢍꢌꢅꢛꢍ"'ꢉꢅꢏꢈꢊꢉꢁꢃꢃꢁꢉꢍꢆꢈ
ꢀꢁꢂꢃꢁꢄꢅꢆꢀꢁꢇꢅꢄꢁ
ꢀꢍꢄꢎꢏꢆꢐꢄꢂꢏ
ꢑꢒꢂꢆꢏꢓꢎꢏꢂꢃꢁꢔ
ꢔꢄꢅꢍꢎ
ꢇꢒꢃꢃꢏꢕꢎꢒꢂ
ꢛꢜꢅꢁꢗꢐꢄꢂꢏ
ꢖꢄꢅꢍꢎꢗ
ꢘꢁꢙꢚꢗꢆꢙꢁꢓ
Comfort Control
1 amp
Comfort Control
maximum
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