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All installations and services must be performed by qualified service personnel.

 

 

3

The minimum clearances from furnace to combustible 

materials 

MODELS: 

GMA1-60D48N 
GMA1-75D48N 
GMC1-60D48N 
GMC1-75D48N

 

CLOSET 

(IN.) 

ALCOVE 

(IN.)

 

FRONT 

18 

BACK 

SIDES 

ROOF JACK 

TOP 

PLENUM SIDES 

1/4 

1/4 

TOP & SIDES OF DUCT 

BOTTOM OF DUCT 

TABLE 1

 

 

 

COMBUSTION AIR 

This furnace is a direct vent unit; it is designed to be 
used only with the approved roof jacks listed in Table 2 
below.  These roof jacks are designed to provide 
combustion air to the furnaces and exhaust flue gases to 
the outside.  No other combustion air openings are 
needed. 

 

Chloride, fluoride, iodide, and bromide bearing 
compounds when present in the combustion air supplied 
to the furnace, even in low concentrations, can result in 
accelerated and severe corrosion of the heat exchanger 
and/or the venting system. Avoid storing or using these 
chemicals within close proximity to the furnace. In 
addition, avoid storing or using any chemicals, of an 
unknown and possibly flammable nature, in close 
proximity to the furnace.   

 

FURNACE LOCATION 

c

 CAUTION: DO NOT

 connect a ducted return air 

system directly to the furnace.  Improper installation may 
create a fire hazard and damage internal equipment, as 
well as void all manufacturers’ warranties. 

 

For best performance, locate the furnace so that it is 
centralized with respect to the duct system.  

 

These furnaces are only intended for installation with 
free air return through the furnace door louvers.   

 

The GMA1 & GMC1 series furnaces may be installed on 
combustible flooring when utilizing the DC-BASE 
Combustible Floor Base. The GMA1 series may be 
installed on the CE118S Coil Cabinet. See Figures 1 and 
2 for depictions of the DC-BASE and the CE118S.  

 

These furnaces are approved to be installed on DC-
BASE, 79990-60**, 7990-62** and 7990-6301 series 
Duct Connectors. 

 

These furnaces are listed for closet or alcove 
applications.  All applications must comply with the 
requirements of this manual. 

 

 

Furnace and Air Conditioning installations 

When used in conjunction with a cooling unit the furnace 
must be installed on the upstream side of the evaporator 
coil to avoid condensation in the heat exchanger.  If a 
Self-contained AC system is connected to the same 
Distribution Duct as the furnace or the furnace is 

installed parallel to the evaporator coil a damper must be 
installed at the furnace base to prevent cold air from 
being discharged up around the heat exchanger. 

 
 

Combustible Floor Base 
Model: DC-BASE 
 
 
 
 
 

 

   

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 

 
 
 
 

   

 

   

Figure 1 

   

 

 
 
Coil Cabinet  
Model: CE118S 

 

 

 

 

 

 
 
 
   

 

 

 

 

 

                          
 
 
 
 
 
 
 
 
 
 
 
 
   

 

 

 

 

 
 
 
 
 
 
 
 
   

Figure 2 

Содержание GMA1-60D48N

Страница 1: ...Homes Buildings PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION INITIAL FIRING AND BEFORE PERFORMING ANY SERVICE OR MAINTENANCE THESE INSTRUCTIONS MUST BE LEFT WITH THE USER AND SHOULD BE RETAINE...

Страница 2: ......

Страница 3: ...OPERATION OF THE FURNACE 6 Initial Start Up 6 Adjustment of Heat Input 7 Burner Adjustment 8 Setting Temperature Rise 8 Furnace Check Out Procedure 8 Instructions to Our Customer End User 8 SERVICE 9...

Страница 4: ...n recovering your claim against the transportation company Warranties c WARNING The manufacturer of this equipment assumes no liability for any damages resulting from unauthorized modifications made t...

Страница 5: ...e Improper installation may create a fire hazard and damage internal equipment as well as void all manufacturers warranties For best performance locate the furnace so that it is centralized with respe...

Страница 6: ...terials located in the return air system must have a flame spread classification of 200 or less Wiring materials located in the return air duct system must conform to Article 300 22 of the latest edit...

Страница 7: ...With the gas piping pressurized all gas piping connections must be leak tested using a strong soap and water solution Any leaks must be repaired immediately after turning off the gas supply A final te...

Страница 8: ...ly L1 Hot line to the Black wire labeled LI Connect the power supply L2 Neutral to the white wire labeled L2 Connect the Power Supply Ground wire to the Green Wire Secure all connections with the yell...

Страница 9: ...9 2 001 3 000 30 26 2 10mm 42 3 001 4 000 30 27 45 2 30mm 4 001 5 000 1 8 28 2 00mm 43 5 001 6 000 31 29 1 95mm 2 20mm 6 001 7 000 31 29 48 2 15mm 7 001 8 000 32 30 49 45 8 001 9 000 33 1 8 50 2 00mm...

Страница 10: ...connected to the Heat terminal on the integrated furnace control with one of the higher speed blower leads attached to a terminal marked Park Be sure to attach any unused blower leads to a terminal ma...

Страница 11: ...ire control should be replaced as the control is not field repairable If the sensed failure is in the system external to the control the LED will flash in the following flash pause sequences to indica...

Страница 12: ...s Yes No No Yes ARE WIRES CONNECTED PROPERLY No CORRECT WIRE CONNECTIONS No Yes Yes No Yes IS THE INDUCER BLOWER OPERATING Yes TROUBLESHOOTING GUIDE THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO...

Страница 13: ...ER TERMINALS IND IND N AT THE INTEGRATED CONTROL CHECK THE INTEGRATED CONTROL DIAGNOSTIC LED LAMP RESET BY INTERRUPTING POWER TO CONTROL FOR MORE THAN ONE SECOND IF LED STAYS ON CONTINUOUSLY REPLACE I...

Страница 14: ...ROOF OF FLAME CHECK Yes CHECK ACROSS THE CIRCULATING AIR BLOWER TERMINALS CIR N HEAT FOR PROPER VOLTAGE REPLACE THE INTEGRATED CONTROL No No Yes DOES THE CIRCULATING AIR FAN COME ON WHEN ENERGIZED No...

Страница 15: ...NS CHECK FOR SHORT IN WIRE TO THERMOSTAT AND CORRECT IF NECESSARY DOES BURNER SHUT OFF WHEN THERMOSTAT IS SATISFIED No No No Yes Yes Yes Yes Yes IS LED LIGHT ON INTEGRATED CONTROL FLASHING DOES THE CI...

Страница 16: ...replaced to ensure proper venting Vent pipes should also be inspected for any signs of corrosion deterioration or leakage that may cause combustion by products to infiltrate the home or indoor enviro...

Страница 17: ...g for signs of excessive heat such as discoloration of components materials damaged from rust or corrosion soot or carbon build up EXTERIOR OF FURNACES The furnace exterior should be inspected for sig...

Страница 18: ...All installations and services must be performed by qualified service personnel 16 APPENDIX A REPLACEMENT PARTS GMA1 SERIES...

Страница 19: ...All installations and services must be performed by qualified service personnel 17 GMA1 SERIES...

Страница 20: ...All installations and services must be performed by qualified service personnel 18 GMC1 SERIES...

Страница 21: ...All installations and services must be performed by qualified service personnel 19 GMC1 SERIES...

Страница 22: ...All installations and services must be performed by qualified service personnel 20 GMA1 GMC1 SERIES BURNER ASEMBLY...

Страница 23: ...All installations and services must be performed by qualified service personnel 21 APPENDIX B WIRING DIAGRAM REVISE...

Страница 24: ...ce Motor Current Draw Amps vs External Static pressure in WC 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 01 2 95 2 90 2 82 2 70 2 62 2 53 ML 4 06 3 84 3 75 3 62 3 48 3 34 3 13 MH 5 43 5 29 5 16 5 01 4 74 4 58 4...

Страница 25: ...ace Motor Current Draw Amps vs External Static pressure in WC 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 01 2 95 2 90 2 82 2 70 2 62 2 53 ML 4 06 3 84 3 75 3 62 3 48 3 34 3 13 MH 5 43 5 29 5 16 5 01 4 74 4 58...

Страница 26: ...Current Draw Amps vs External Static pressure in WC 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 04 2 93 2 88 2 79 2 72 2 64 2 53 ML 3 85 3 78 3 66 3 55 3 45 3 31 3 15 MH 5 40 5 23 5 06 4 88 4 70 4 52 4 30 High...

Страница 27: ...ace Motor Current Draw Amps vs External Static pressure in WC 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 04 2 93 2 88 2 79 2 72 2 64 2 53 ML 3 85 3 78 3 66 3 55 3 45 3 31 3 15 MH 5 40 5 23 5 06 4 88 4 70 4 52...

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