Dettson HGC Assembly instructions

Manufactured by:
UTC Canada Corporation
ICP DIVISION
3400 Industrial Boulevard
Sherbrooke, QC Canada
J1L 1V8
Caution : Do not tamper with
the unit or its controls.
Call a qualified service
technician.
GAS FIRED HOT WATER
BOILER AND WATER
HEATER
Save these instructions for future reference
Printed in Canada 2006/03/15 X40036 Rev. C
Model:
HGC
DNS-0629 Rev.A

3
PART 1
INSTALLATION
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE, COMBUSTIBLE OR CORROSIVE
VAPOURS AND LIQUIDS IN THE VICINITY OF THIS
APPLIANCE.
1) HGC LINE
HGC boilers and water heaters are natural or propane
gas fired units and are available with inputs ranging
from 404,000 BTU/h to 1,1515,000 BTU/h. The model
designations are as follows:
FIGURE 1
HGC Series
HGC - 0000 - XX – X X X X
Aquastat :
N : Standard
Evacuation :
N : Chimney
V : SWV HGC-808 to HGC-1313
Relief valve :
1 : 150 Lbs (HGC-HW)
5 : 50 Lbs (HGC-AC)
9 : 90 Lbs (HGC-AC)
Ignition and gas type :
E : Electronic, natural
P : Constant, Propane (HGC-0404 to HGC-0909)
C : Constant, Natural
Heat exchanger :
AC : Steel
HW : Stainless steel
Capacity (Input) in thousands of BTU/h
0404 0505 0606
0707 0808 0909
1010 1111 1212
1313 1414 1515
Unit name :
HGC : Commercial Gas Hydronic
2) DESCRIPTIONS OF MAIN
COMPONENTS
2.1) Heat exchanger
The heat exchanger consists of ten (10) integral copper
finned tubes assembled between two (2) steel
manifolds. A double pass system is used. Standard
components used in conjunction with the exchanger
include a temperature/pressure gauge, a safety valve, a
temperature limiting device, a flow switch and a drain
valve.
2.2) Gas train
The gas train consists of a removable burner tray
assembly. Basically, the gas train incorporates a
combination gas control (valve and pressure regulator),
and a complete ignition system including a pilot.
2.3) Draft hood
All models use an integral type draft-hood that must be
used without alteration.

4
2.4) Type of ignition
The HGC series is available with two types of ignition:
a. A constantly burning pilot;
b. An intermittent pilot, that functions on demand.
2.5) Modulation
The HGC series is equipped with a 2-stage gas valve
that reduces the input by 50%. This staging is possible
by using an external control (dry contact), provided by
the installer.
2.6) Flow switch
All HGC boilers are equipped with a factory installed
flow switch. This flow switch is located on the heat
exchanger manifold and is factory wired.
WARNING
It is compulsory to have the flow switch
functional at all times. If the flow switch is
defective, it must be changed before
attempting to restart the unit (never use a
jumper to by-pass the flow switch contact).
This may void your warranty.
If it is necessary to replace the flow switch, use the
“Watts #FS10-C-SS” model. When replacing, the blade
length varies depending on the unit capacity. Thus, for
models “HGC-0404 to HGC-0909” the blade must be
3 1/4" (82.6 mm) long from the holding screw center
line to the blade end, while on models “HGC-1010 to
HGC-1515” the blade must be 1 3/4" (44.5 mm) long.
Note: Leave the blade already installed on the
flow
switch, add the necessary blade to reach the desired
length or cut the blade if needed.
We recommend that you have a qualified
technician install your appliance.
3) DELIVERY
Check your unit carefully upon delivery for any evidence
of damage that may have occurred during shipping and
handling. Make sure that the information on the boiler
rating plate matches your needs and your invoice. Any
claims against the shipper for damages or lost parts
must be made without delay.
4) INSTALLATION
Your unit must be installed according to the regulations
established by competent authorities. Consult the latest
edition of the Installation codes CAN/CGA B149.1 or
B149.2 for current guidelines.
4.1) Location
The unit must be installed in a clean and dry area, as
close as possible to the chimney or power vent.
WARNING
Any excessive accumulation of dust around
the boiler must not be tolerated, especially
construction related dust such as dry plaster
dust and insulation fibres.
Non observance of this Warning may cause
the warranty to become null and void.
These particles of dust tend to be sucked in by the
burners and clog them leading to possible severe soot
formation.
WARNING
This unit must be installed on a non-
combustible floor and cannot be installed
directly on carpet or wooden floor.

5
4.2) Minimum clearances
The following clearances from combustible materials
must be respected.
Top : N/A
First side : 24"
Rear : 9"
Flue-pipe : 9"
Front : N/A
Other side : 9”
Floor: Non Combustible
5) COMBUSTION AIR SUPPLY
The space where the unit is located must provide
sufficient fresh air for proper combustion. Consult the
appropriate sections of the CAN/CGA B149 code for
more details. When the unit is located in an enclosed
area, such as a boiler room, where outside air cannot
be supplied, two fresh air openings must be provided.
One must be located 6" to 18" from the floor, the other
as close as possible to the ceiling. Consult the
CAN/CGAB149 codes.
WARNING
The unit must be completely isolated from
corrosive chemical vapours and excessively
moist air. FAILURE TO COMPLY WITH THIS
CONDITION MAY RENDER YOUR
WARRANTY NULL AND VOID. When a
mechanical air supply device is used, the
installer must make certain that no air
movement is created around the unit.
Furthermore, this mechanical device (fan,
damper, etc.) must be electrically connected to
the unit to lockout the latter in case of
breakdown.
6) GAS SUPPLY AND PIPING
Gas piping must be installed in accordance with
CAN/CGA B149 and local regulations. Table 1 gives
the minimum pipe diameters for each model. Please
note that the low pressure gas piping must never be
smaller in diameter than the gas valve inlet. A manual
cut-off valve must be installed as close as possible to
the appliance
7) ELECTRICAL WIRING
All wiring must comply with regulations by local
authorities and the “Canadian Electrical Code - CSA
C22.1/ Part I”
The unit must be connected to a protected circuit of 15
Amps. with a single phase voltage of 120 VAC to 60 Hz.
The installer must wire the unit according to the
appropriate electrical diagram.
Consult the following figures for the appropriate
electrical diagrams.
Figure 3.1 : Constantly burning pilot with 2-stage
gas valve;
Figure 3.2 : Electronic ignition with 2-stage gas
valve.
Please note that HGC boilers and water heaters require
water circulation whenever the burners are on.
CAUTION
FAILURE TO CIRCULATE WATER THROUGH THE
EXCHANGER WHEN THE BURNERS ARE
OPERATING VOIDS THE WARRANTY.
The unit is equipped with a 120/24 VAC step down
transformer for all internal needs. All 24 VAC
connections are factory wired. A supplementary 120/24
VAC step down transformer shall be planned for if
external equipment requires 24 VAC voltage (i.e. zone
valves, etc.).
On all units the external terminals “1” and “2” are for the
connection of a room thermostat or an operating control
(aquastat, indoor-outdoor control, etc.). Simply putting a
jumper on “1” and “2” and having the appliance run on
its High Limit Control is inefficient and not
recommended.
WARNING
If any of the original wires, as supplied with the
appliance, must be replaced, they must be
replaced with 16 gauge TEW (105ºC) wire or
its equivalent.

6
TABLE 1
Suggested gas piping dimensions
Model Distance from the unit gas regulator, in equivalent feet, for a pressure loss of less than 0.5" W.C.
0-25 25-50 50-100 100-200 200-300 300-500
HGC-0404 1 ¼" 1 ¼" 1 ½" 2" 2" 2"
HGC-0505 1 ¼" 1 ¼" 1 ½" 2" 2" 2"
HGC-0606 1 ¼" 1 ½" 2" 2" 2" 2 ½"
HGC-0707 1 ½" 1 ½" 2" 2" 2 ½" 2 ½"
HGC-0808 1 ½" 1 ½" 2" 2" 2 ½" 2 ½"
HGC-0909 1 ½" 2" 2" 2 ½" 2 ½" 3"
HGC-1010 1 ½" 2" 2" 2 ½" 2 ½" 3"
HGC-1111 2" 2" 2 ½" 2 ½" 3" 3"
HGC-1212 2" 2" 2 ½" 2 ½" 3" 3"
HGC-1313 2" 2" 2 ½" 3" 3" 3"
HGC-1414 2" 2" 2 ½" 3" 3" 3"
HGC-1515 2" 2" 2 ½" 3" 3" 4"
The front of the control panel is equipped with indicator
lights. The function of each light (from left to right) is as
follows:
a. L1 : GREEN - Call for heat on the unit. A call for
heat is defined by continuity between terminals “1”
and “2”.
b. L2 : RED - Lack of water circulation in the heat
exchanger. The flow switch contact is open.
c. L3 : RED - The water temperature in the heat
exchanger is too high. The High Limit Control
contact is open.
d. L4 : RED - No flame. There is no voltage between
the main gas valve terminals, even if there is a call
for heat (L1 on).
e. L5 : GREEN - The main gas valve is operating
(low or high fire).
f. L6 : GREEN - The main gas valve is operating on
the second stage (high fire).
8) WATER PIPING
8.1) Overview
A pressure regulator must be installed on the water feed
line to the unit and adjusted to a pressure lower than the
unit safety valve setting. The system must be equipped
with a circulating pump, expansion tank, air vents and
maintenance valves as indicated in Figures 3.3 to 3.6
(depending on the system). The installation of a by-pass
between the return and supply pipes is good plumbing
practice and ensures a good return temperature in the
heat exchanger.
8.2) Variable volume water system:
Heating systems incorporating zone valves, zone
circulators or 3-way mixing valves, operate with reduced
water circulation through the unit. Therefore, the
installation must be planned for a minimum required
circulation of water through the unit. A water flow lower
than the minimum threshold could result in a significant
water temperature elevation and provoke knocking
noises, vibration and short cycling. All these conditions
are unstable and damaging to the appliance. Size your
circulating pump so that there will always be a minimum
flow of water through the unit, as recommended in
Table 3. If short cycling persists, the use of the second
stage of the main gas valve (2-stage gas valve is
standard equipment) should be considered.

7
8.3) Special note concerning low
temperature systems
For proper operation and to prevent condensation on
the external surfaces of the heat exchanger, the return
temperature of your HGC unit must always exceed
100°F. A transition period below that temperature is
acceptable, but a permanent return temperature below
100°F voids your warranty.
8.4) Use of glycol as thermal fluid
It is permissible to use a mixture of water and glycol as
thermal fluid in the heat exchanger of the boiler. The
proportion of glycol in the mixture must not exceed 50%.
9) DRAFT HOOD
The draft hood shipped with your HGC unit must be
installed without any modifications and fastened to the
collar of the appliance with the help of metal screws.
10) VENTING
10.1) Chimney
WARNING
An inadequate chimney can result in an
improper unit operation.
The chimney must have sufficient draft to ensure
normal, safe operation of the appliance. Consult the
installation code CAN/CGA B149. Also, the installation
must conform to regulations of authorities having
jurisdiction.
PART 2
OPERATION
1) FUEL
Use only natural gas or propane gas. Never use any
other type of gas.
2) STARTING UP YOUR SYSTEM
2.1) Filling your system with water
All existing piping must be drained and cleaned with
fresh water before filling the new HGC unit.
1. Close all manual air vents and open the cold water
feed valve to fill the system slowly.
2. Purge the air from the system by letting the
circulating pump run. Check for proper operation of
the automatic air vents and manually actuate the
manual air vents.
3. Check the water level in the expansion tank. It
should be one quarter full.
4. Check the system pressure and adjust the pressure
regulator as needed.
5. Check the system for leaks after the unit has
reached normal operation temperature.
2.2) Lighting the pilot
WARNING
On all types of ignition, wait a minimum of 5
minutes before attempting to relight the pilot.

8
2.2.1) Constantly burning pilot
1. Press down the “pilot stat” control button and light
the pilot with a match.
2. Hold down the button for 30 seconds to help purge
air from the pilot gas line.
3. Release the button.
4. The pilot should stay lit. If not, check the
thermocouple and its connection to the pilot stat
control,
5. The pilot flame should envelop the thermocouple. If
it does not, adjust the flame by turning the screw on
the pilot regulator located on the pilot gas line.
2.2.2) Intermittent pilot
This system activates the pilot upon demand. You do
not have to manually light the pilot.
2.3) Lighting the main burners
WARNING
On all types of ignition, wait a minimum of 5
minutes before attempting to relight the pilot.
Simulate a demand by jumping terminals “1” and “2”
located on the exterior of the unit control panel. On all
types of ignitions, the ignition should be smooth
without flame roll-out or orifice burning.
2.4) Verifications and adjustments
Once the main burners are in operation the following
points must be checked:
2.4.1) Manifold pressure
Install a pressure gauge downstream from the gas
valve in the pressure tap provided on the vertical
section of the gas train pipe. The pressure observed
after five (5) minutes of operation should correspond
to the value specified on Table 2. If you have to adjust
the pressure, do so by turning the main setting screw
on the gas valve
TABLE 2
Manifold pressure
Model Options Pressure ("W.C.)
Natural Propane
HGC-0404
to
HGC-1515 CS, ES Minimum : 1.0
Maximum : 3.2
Minimum : 2.5
Maximum : 10.5
(HGC-0404 to HGC-0909 only)
2.4.2) Pilot control safety checks
Constantly burning pilot
1. Cut the gas supply by closing the firing valve
upstream of the main gas valve.
2. The valve must close within 90 seconds. You
should hear a “CLICK” sound.
Intermittent pilot
1. Cut the gas supply by closing the firing valve
upstream of the main gas valve.
2. The control circuit should close the valve within 1
second.
2.4.3) Temperature control limit check
Adjust the temperature control limit below the present
water temperature. The gas supply to the burners
should stop immediately. Set the control for a higher
temperature and the burners should come on again.

9
2.4.4) 2 stage modulation gas valve
With the boiler running, turn the setting of the control
that causes the 2nd stage to open the circuit. The gas
flow to the burners should decrease on the contact
opening.
2.4.5) Gas leaks
Check the whole system for gas leaks after the
installation is completed. Use a solution of soap and
water on the pipe joints.
DANGER
If there is a strong smell of gas due to a major
leak:
1. Open the windows,
2. Do not activate any electrical switches,
3. Extinguish all flames,
4. Immediately call your gas supplier from
another building.
PART 3
MAINTENANCE
Your boiler should be inspected once a year by a
qualified technician.
The following points require particular attention:
1.1) Heat exchanger
The heat exchanger should be checked for soot
deposits. If necessary, follow the procedures below to
clean the heat exchanger. Consult Figure 2.
1. Remove the burner tray to prevent the soot from
falling on the burners;
2. Remove the connecting flue-pipe and the draft
hood;
3. Remove the “V” shaped baffles on the heat
exchanger;
4. Clean the tubes with a suitable brush;
5. Vacuum the debris at the bottom of the unit;
6. Reinstall the parts.
1.2) Drawer assembly (burner tray)
Your HGC boiler is equipped with a burner tray to allow
you to remove the burners and manifold without
dismantling the appliance. To remove the burner tray,
disconnect the union on the gas piping and disconnect
the wiring harness. Pull out the tray.
1.3) Combustion chamber
While the burner tray and the draft hood are removed,
use a light to thoroughly check the condition of the
combustion chamber and repair if needed.
1.4) Flue-pipe and connecting pipe
Inspect and clean if necessary.
1.5) Miscellaneous
a. If a mechanical fresh air intake device is used,
check if it is functioning properly.
b. Inspect the circulating pump and lubricate if
necessary.
c. Test the high temperature limit control and the
operation controls.
d. Test the safety valve.

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PART 4
INFORMATION
Model: Serial number:
Date of installation of the boiler:
Service telephones – day: Night:
Dealer’s name and address:
RESULT OF START-UP TEST
Gas inlet pressure: "W.C.
Gas outlet pressure: "W.C.
Heat exchanger water inlet temperature:
°F or °C
Heat exchanger water outlet temperature:
°F or °C
Water pressure of distribution system: Psi
Hi-limit temperature adjustment:
°F or °C
Test performed by:

FIGURE 2
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Model Input Minimum Output USGPM Pressure Recovery
Input at 20
o
Fdrop rate
USGPH
(BTU/h) (BTU/h) (BTU/h) Delta T (ft of water) Delta T- 100
o
F
HGC-0404 404,000 202,000 323,200 32.4 1 378
HGC-0505 505,000 250,000 404,000 40.6 1 472
HGC-0606 606,000 300,000 484,800 48.7 1 567
HGC-0707 707,000 350,000 565,600 56.8 1 661
HGC-0808 808,000 400,000 646,400 64.9 1.1 755
HGC-0909 909,000 450,000 727,200 73.0 1.3 850
HGC-1010 1,010,000 500,000 808,000 81.1 1.5 944
HGC-1111 1,111,000 550,000 888,800 89.2 1.7 1039
HGC-1212 1,212,000 600,000 969,600 97.3 2.3 1133
HGC-1313 1,313,000 650,000 1,050,400 105.5 3.1 1228
HGC-1414 1,414,000 700,000 1,131,200 113.6 3.2 1322
Notes : - The capacities are identical for natural and propane gas.
- Propane gas is offered only with a constantly burning pilot (CS) and it is available on models “HGC-
0404” to ”HGC- 0909” inclusively.
Technical specifications

12
FIGURE 2
DNS-0724 Rev. A
Model ''LA'' ''LB'' ''LC'' ''LD'' ''LE'' ''LF'' ''DA'' **''DB''
HGC-(HW) In. mm In. mm In. mm In. mm In. mm In. mm In. 50 90
404 19.00 483 10 254 25.50 648 27.50 699 51.50 1308 19.00 483 1.00 3/4 3/4
505 22.50 572 10 254 30.00 762 31.50 800 51.50 1308 22.50 572 1.00 3/4 3/4
606 26.50 673 12 305 33.50 851 35.00 889 51.50 1308 26.50 673 1.00 3/4 3/4
707 30.00 762 12 305 37.00 940 39.00 991 51.50 1308 30.00 762 1.00 3/4 3/4
808 34.00 864 14 356 40.50 1029 42.50 1080 51.50 1308 34.00 864 1.00 3/4 x 1 3/4
909 34.00 864 14 356 44.50 1130 46.50 1181 59.50 1511 37.50 953 1.00 3/4 x 1 3/4
1010 41.50 1054 16 406 48.50 1232 50.00 1270 59.50 1511 41.00 1041 1.25 1x1 1/4 3/4
1111 41.50 1054 16 406 52.00 1321 54.00 1372 59.50 1511 45.00 1143 1.25 1x1 1/4 3/4
1212 41.50 1054 16 406 56.00 1422 57.50 1461 59.50 1511 49.00 1245 1.25 1x1 1/4 1x1
1313 52.50 1334 18 457 59.50 1511 61.50 1562 59.50 1511 52.50 1334 1.25 1x1 1/4 1x1
1414 52.50 1334 18 457 63.50 1613 65.00 1651 59.50 1511 56.00 1422 1.25 1x1 1/4 1x1
1515 52.50 1334 18 457 67.00 1702 69.00 1753 59.50 1511 60.00 1524 1.25 1x1 1/4 1x1
** “DB” -Boiler safety valve diameter, operating at 50 Psi or 90 Psi.
-Water Heater safety valve diameter, operating at 150 Psi = 3/4 in. X 3/4 in., on all models.

DNS-0252 Rev. A
13
FIGURE 3.1
HGC 0404 to 0909 constant pilot with natural venting
FIGURE 3.2
HGC 0404 to 1515 electronic pilot with natural venting
DNS-0251 Rev.A

14
FIGURE 3.3
Electrical wiring, electronic ignition and sidewall vent (HGC 0404 to HGC 0707)
FIGURE 3.4
Electrical wiring, electronic ignition and sidewall vent (HGC 0808 to HGC 1313)
DNS-0341 Rev.B
DNS-0340 Rev.B

15
FIGURE 3.5
Electrical wiring, constant pilot and sidewall vent (HGC 0404 to HGC 0707)
DNS-0343 Rev.B
FIGURE 3.6
Electrical wiring, constant pilot and sidewall vent (HGC 0808 to HGC 1313)
DNS-0342 Rev.B

16
DNS-0254 Rev. A
FIGURE 3.7
Typical primary - secondary piping system
FIGURE 3.8
Typical primary - secondary piping system with by-pass
DNS-0253 Rev.A

17
FIGURE 3.9
Typical 3 way valve piping system
DNS-0256 Rev.A
FIGURE 3.10
Typical domestic hot water production piping system
DNS-0255 Rev.A

18
PARTS LIST
DNS-0393 Rev. D
Model HGC (HGC0404 to HGC1515)

19
PARTS LIST
ITEM NUMBER COMMENTS
1A B01562-XX For Hydronic Heating only
1B B01563-XX For Domestic Hot Water only
2 K15001-XX
3A K15002-01 HGC - Heating (AC)
3B K15002-02 HGC - Hot Water (HW)
4A K15003-01 HGC - Heating (AC)
4B K15003-02 HGC - Hot Water (HW)
5 K15004 Bolts, Nuts & Gaskets for 2 Headers
6 B01609
7 B01550-XX
8 K15005 Includes 4 pieces
9 K15006 Includes all parts for 2 sides
10 K15007-XX Includes all Front & Rear Panels
11 B01589
12 B01582
13 B01608
14 B01584-XX By Unit
15 B01585 By Unit
16 B01583-XX By Unit
17 K15008-XX
18 B01594-XX
19A B01621-01TO 06 CS Models - With Pilot & Valves - Natural Gas
19B B01621-07 TO 12 CS Models - With Pilot & Valves - Propane Gas
19C B01617-XX ES Models - With Pilot & Valves
20 B01624 HGC-1212 and up
21 K15012 Kit of 20
22 B01592 By Unit
23 B01603-XX
24 K15013 Left and Right Side
25 B01598-XX
26 K15014-XX For 1 Front OR Rear Kit
27 B00043-01 By Unit
28A B01239-01 By Unit - Propane Gas
28B B01239-02 By Unit - Natural Gas
29 K15015 Kit of 20
30 K15016 includes the Air Baffle
31A R03G003 CS Models
31B R03H006 ES Models
31C R04G001 CS Models - Propane Only
32A R02K002 CS Models
32B R03Z010 ES Models
33 B01618-XX Without Valves and Controls
34A G10F002 HGC-0909 and lower
34B G10F003 HGC-1010 and up
35 R03F001-1 CS Models
36 R01Z008 ES Models
37 K15017
38 G11H004
39A B01619-01 HGC-0909 and lower
39B B01619-02 HGC-1010 and up
40A G11H001-2 HGC-0909 and lower
40B G11H002-2 HGC-1010 and up
41A R01G003 HGC-0909 and lower - CS & ES Natural
41B R01G009 HGC-1010 and up - ES Natural
41C R01G010 HGC-0909 and lower - CS Propane
42A G01K003 HGC-0909 and lower - By Unit
42B G01L001 HGC-1010 and up - By Units
43 K15018 Complete with Label
44 K01012
45 L05F003-1
1 1/4" X2 1/2" Nipple
Electrical Box Cover
Ground Kit
8 positions BUCK style Terminal Strip
1 1/4" Main manual shut-off Valve
1" Main valve
1 1/4" Main valve
1" X2 1/2" Nipple
1" Main valve
Pilot manual shut-off Valve
Pilot Nipple
Pilot Nipple
1" Main manual shut-off Valve
1 1/4" Union
Pilotstat
Pilot Solenoid Valve
Pilot line
30" Thermocouple
36" Ignition Cable
Manifold Assembly
1" Union
Pilot Drawer Kit
Constant Pilot
Electronic Pilot
.010" Propane Insertion orifice
HGC Burner
Orifice
Orifice
Wing Nuts Kit
Floor
Rear Inlet Air Side panels Kit
Rear Inlet Air Panel
Front & Rear panels Kit
Complete Gas Train
Well Protector
Insulation supports Kit
Combustion Chamber Interior Side Panel
Heat Exchanger Baffles Kit
Front superior Burner Plate
Complete Gas Train
Complete Gas Train
Header outside panel (Right)
Combustion Chamber Front & Rear Top Support
Combustion Chamber Corner angle
Comb. Chamber Front & Rear Bottom Support
Combustion Chamber Ceramic Insulation Kit
Combustion Chamber Ceramic Insulation Kit
Exterior Side Panel
Combustion Chamber Support
Header gasket Kit
Header outside panel (Left)
Complete Assembled Draft-Hood
Heat Exchanger corners Insulation Kit
Inlet-Outlet Header
Inlet-Outlet Header
Intermediate Header
Intermediate Header
DESCRIPTION
Heat Exchanger
Heat Exchanger
Support Plates Kit
Model HGC (HGC0404 to HGC1515)

PARTS LIST
20
TABLE OF VARIABLES
When the part number changes depending of the size of the furnace, complete the code (in the
column “NUMBER” ) by changing the X with the number corresponding in the following table.
Model XX Model XX Model XX
HGC-0404 1 HGC-0808 5 HGC-1212 9
HGC-0505 2 HGC-0909 6 HGC-1313 10
HGC-0606 3 HGC-1010 7 HGC-1414 11
HGC-0707 4 HGC-1111 8 HGC-1515 12
Model HGC (HGC0404 to HGC1515)
ITEM NUMBER COMMENTS
46 L01G008
47 L02G001-1
48 B01356-02 Left Side
49 L01F003-2
50 B01613
51 B01601
52 R02F012
53 R03I005 ES Models only
54 B01356-01 Right Side
55 G08F004 For Drain valve
56 G08F005 For Relief valve (Certain models only)
57 G01J002 For Relief valve (Certain models only)
58A R02L001 HGC - Heating (AC)
58B R02L003 HGC - Hot Water (HW)
59 G11Z001-1
60A G11F021 HGC - 0404 to -0707 Heating (AC)
60B G11F022 Models HGC-0808 & HGC-0909 Heating (AC)
60C G11F023 Models HGC-1010 & more Heating (AC)
60D G11F011 All Hot water (HW) models
60E G11F009 HGC-0404 to -1111
60F G11F010 HGC-1212 to -1515
61 A00004 By Unit
62 B00739-YY YY= for 0404 to 0909, YY=02 for 1010 to 1515
63 B01931-02Flow Switch paddle
50# 1 X1-1/4 Relief Valve
150# 3/4 X3/4 Relief Valve
Gasket
Flow Switch
90# 3/4 X3/4 Relief Valve
90# 3/4 X1 Relief Valve
0-60 PSI Tridicator
0-250 PS Tridicator
1/2" Drain Valve
50# 3/4 X1 Relief Valve
50# 3/4 X3/4 Relief Valve
Electrical Box Side Panel
1 X1/2 Hexagonal Bushing
1 X3/4 Hexagonal Bushing
3/4" X2" Nipple
L.E.D. Electrical Card
Electrical Box
Single Aquastat
Electronic Ignition Control
3A Fuse time-delay
Complete Fuse-Holder
Electrical Box Side Panel
40VA Transformer
DESCRIPTION