background image

356485-UIM-G-1211

2

Johnson Controls Unitary Products

SPECIFIC SAFETY RULES AND PRECAUTIONS

1.

Only Natural gas or Propane (LP) gas are approved for use with
this furnace.

2.

Install this furnace only in a location and position as specified in
these instructions.

3.

A gas-fired furnace for installation in a residential garage must be
installed as specified in these instructions.

4.

Provide adequate combustion and ventilation air to the furnace
space as specified in these instructions.

5.

Combustion products must be discharged outdoors. Connect this
furnace to an approved vent system only, as specified in SEC-
TION VII of these instructions.

6.

Test for gas leaks as specified in these instructions.

7.

Always install the furnace to operate within the furnace’s intended
temperature rise range. Only connect the furnace to a duct system
which has an external static pressure within the allowable range,
as specified on the furnace rating plate.

8.

When a furnace is installed so that supply ducts carry air circulated
by the furnace to areas outside the space containing the furnace,
the return air shall also be handled by duct(s) sealed to the fur-
nace casing and terminating outside the space containing the fur-
nace.

9.

It is permitted to use the furnace for heating of buildings or struc-
tures under construction where the application and use must com-
ply with all manufacturer’s installation instructions including:

Proper vent installation;

Furnace operating under thermostatic control;

Return air duct sealed to the furnace;

Air filters in place;

Set furnace input rate and temperature rise per rating plate
marking;

Means for providing outdoor air required for combustion;

Return air temperature maintained between 55ºF (13ºC) and
80ºF (27ºC);

The 

air filter must be replaced

 upon substantial completion of

the construction process;

Clean furnace, duct work and components upon substantial
completion of the construction process, and verify furnace-
operating conditions including ignition, input rate, temperature
rise and venting, according to the manufacturer’s instructions.

10. When installed in a Non-HUD-Approved Modular Home or building

constructed on-site, combustion air shall not be supplied from
occupied spaces.

11.

The size of the unit should be based on an acceptable heat loss
calculation for the structure. ACCA, Manual J or other approved
methods may be used.

12. When moving or handling this furnace prior to installation it is rec-

ommended to leave the doors on the furnace to provide support
and to prevent damage or warping of the cabinet. When lifting the
furnace by the cabinet, support the ends of the furnace rather than
lifting by the cabinet flanges at the return air openings (bottom or
sides) or supply air opening.

13. When lifting the furnace, it is acceptable to use the primary heat

exchanger tubes as a lifting point provided that the tubes are lifted
at the front of the heat exchangers where attached to the vestibule
panel. Do not use the top return bend of the heat exchangers as
lifting points as the tubes may shift out of position or their location
brackets/baffles.

SAFETY REQUIREMENTS

Refer to the unit rating plate for the furnace model number, and
then see the dimensions page of this instruction for return air ple-
num dimensions in Figure 12. The plenum must be installed
according to the instructions.

Provide clearances from combustible materials as listed under
Clearances to Combustibles.

Provide clearances for servicing ensuring that service access is
allowed for both the burners and blower.

These models 

ARE NOT 

CSA listed or approved for installation

into a 

HUD Approved Modular Home

 or a 

Manufactured

(Mobile) Home

.

This furnace is not approved for installation in trailers or recre-
ational vehicles.

Furnaces for installation on combustible flooring shall not be
installed directly on carpeting, tile or other combustible material
other than wood flooring.

Check the rating plate and power supply to be sure that the elec-
trical characteristics match. All models use nominal 115 VAC, 1
Phase, 60-Hertz power supply. DO NOT CONNECT THIS APPLI-
ANCE TO A 50 HZ POWER SUPPLY OR A VOLTAGE ABOVE
130 VOLTS.

Furnace shall be installed so the electrical components are pro-
tected from water.

Installing and servicing heating equipment can be hazardous due
to the electrical components and the gas fired components. Only
trained and qualified personnel should install, repair, or service
gas heating equipment. Untrained service personnel can perform
basic maintenance functions such as cleaning and replacing the
air filters. When working on heating equipment, observe precau-
tions in the manuals and on the labels attached to the unit and
other safety precautions that may apply.

FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for detection of leaks to
check all connections. A fire or explosion may result causing prop-
erty damage, personal injury or loss of life.

During installation, doors should remain on the furnace when
moving or lifting.

This product must be installed in strict compliance with the installa-
tion instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical
codes.

Summary of Contents for GG8S*MP

Page 1: ...Position without filter Bottom Return 24 Blower Performance CFM Any Position without filter Left Side Return 25 These high efficiency compact units employ induced combustion reli able hot surface ign...

Page 2: ...binet support the ends of the furnace rather than lifting by the cabinet flanges at the return air openings bottom or sides or supply air opening 13 When lifting the furnace it is acceptable to use th...

Page 3: ...the National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 or for only the NFGC contact the American Gas Association 400 N Capital N W Washington DC 20001 or www NFPA org CANADA NS...

Page 4: ...noxide detector with an alarm and battery back up is installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gasfitter shall observe that a batter...

Page 5: ...otated down for shipment In order to use the flanges remove the screw holding an individual flange rotate the flange so it is in the upward position and reinstall the screw then repeat this for all 4...

Page 6: ...CE ASSEMBLY PC SERIES COILS These upflow coils are designed for installation on top of upflow fur naces only If the coil is used with a furnace of a different size use a 45 transition to allow proper...

Page 7: ...will be necessary to seal the edges of the bottom panel to the casing using tape or other appropriate gasket material to prevent air leakage BOTTOM RETURN AND ATTIC INSTALLATIONS Bottom return applica...

Page 8: ...one support at the supply end of the furnace one support located approximately in the center of the furnace near the blower shelf and the third support should be at the return end of the fur nace Mai...

Page 9: ...M m3 min Cabinet Size Cabinet Dimensions Inches Approximate Operating Weights A A cm B B cm C C cm Lbs 40 11 7 800 22 7 A 14 1 2 36 8 13 3 8 34 0 10 3 26 2 89 60 17 6 1000 28 3 A 14 1 2 36 8 13 3 8 34...

Page 10: ...this section specify the type of gas approved for this furnace only use those approved gases The instal lation of a drip leg and ground union is required Refer to Figure 15 FIGURE 13 Side Return Cuto...

Page 11: ...ne LP gas must have the LoNOx screens removed prior to installation and operation See propane instructions Table 5 Nominal Manifold Pressure Manifold Pressures in wc Manifold Pressures kpa Altitude fe...

Page 12: ...ct the thermostat wiring from the wiring connections on the thermostat to the terminal board on the ignition module as shown in Figures 17 or 18 Electronic thermostats may require the common wire to b...

Page 13: ...ressor G Fan PP11C70224 THERMOSTAT RH 24 Volt Hot Heat XFMR RC 24 Volt Hot Cool XFMR W Full Stage Heat Clipping Jumper W914 for electric heat on thermostat is not necessary 24VAC Humidifier Optional C...

Page 14: ...S HGD HP RHS O Reversing Valve Energized in Cool C 24 Volt Common R 24 Volt Hot W1 66 out Heat Y Compressor DEMAND DEFROST CONTROL X L Malfunction Light W Auxiliary Heat SINGLE STAGE HEAT PUMP 1 1 Par...

Page 15: ...he furnace that operates on W2 will be supplying cold air in the Heating mode to the occupied spaces unless W2 is energized GAS PIPING Furnace gas supplies must be provided as specified with these ins...

Page 16: ...scribed below 2 Connect a wire from the TWIN terminal of Furnace 1 to the TWIN terminal of Furnace 2 3 Install a separate 24V relay as shown in the diagram below Use of this relay is required as it en...

Page 17: ...ney must extend at least 5 ft 1 5 m above the highest equipment draft hood or flue collar FAN ASSISTED COMBUSTION SYSTEM This appliance is equipped with an integral mechanical means to either draw pro...

Page 18: ...must be given consideration in calculating free area If the free area of a specific louver or grille is not known Refer to Table 7 to estimate free area Ventilated Combustion Air The ventilated attic...

Page 19: ...simply slide the NOx screens out of the heat exchanger tubes and discard the screens 8 Replace all components in reverse order Reconnect all wiring CARBON MONOXIDE POISONING HAZARD Failure to follow t...

Page 20: ...ilots 2 Run furnace for a minimum of 3 minutes in heating operation 3 Measure time in sec for gas meter to complete 1 revolution and note reading The 2 cubic feet dial provides a more accurate mea sur...

Page 21: ...22 164 327 818 64 56 112 281 23 157 313 783 66 54 109 273 24 150 300 750 68 53 106 265 25 144 288 720 70 51 103 257 26 138 277 692 72 50 100 250 27 133 267 667 74 48 97 243 28 129 257 643 76 47 95 23...

Page 22: ...n and follow the operating instructions to place the unit back in operation 3 Adjust manifold pressure by adjusting gas valve regulator screw for the appropriate gas per the following 4 After the mani...

Page 23: ...must be long enough to adequately cool the furnace but not so long that cold air is blown into the heated space The fan off timing may be adjusted by positioning the jumper on two of the four pins as...

Page 24: ...638 2540 2448 2339 2224 2111 1974 1831 Medium High 2234 2233 2147 2092 2042 1974 1907 1820 1705 1575 Medium Low 1722 1716 1690 1681 1603 1553 1489 1426 1335 1241 Low 1396 1375 1348 1325 1263 1200 1150...

Page 25: ...ow 1126 1115 1095 1049 1027 996 957 929 840 742 080C22 High 2972 2863 2769 2671 2571 2465 2352 2227 2095 1950 Medium High 2173 2146 2103 2082 2036 1966 1904 1827 1738 1621 Medium Low 1670 1667 1647 16...

Page 26: ...ion occurs and the flame sensor begins its sensing function The blower motor will energize 30 seconds after the gas valve opens if a flame is detected Normal furnace operation will continue until the...

Page 27: ...ed Flashes description below If the main limit switch opens five times within a single call for heat the control will also indicate 4 Red Flashes and will enter a one hour soft lockout 5 RED FLASHES T...

Page 28: ...ill flash three green flashes when the memory has been cleared then will resume the normal slow green flash after a five second pause SECTION X REPLACEMENT PARTS LIST DESCRIPTION MOTOR MOTOR DIRECT DR...

Page 29: ...lower motor speed connections shown are typical but may vary by model and application LEGENDE DS Commutateur de porte MOT Moteur soufflerie TST Thermostat ROS Commutateur de roulement IDM D induct mot...

Page 30: ...ge without notice Published in U S A 356485 UIM G 1211 Copyright 2011 by Johnson Controls Inc All rights reserved Supersedes 356485 UIM F 0910 Johnson Controls Unitary Products 5005 York Drive Norman...

Reviews: