Heat Controller GMDA Installation Instructions Manual Download

Page: 1 / 40

92-24161-65-02

SUPERSEDES 92-24161-65-01

INSTALLATION INSTRUCTIONS

FOR INDUCED DRAFT GAS FURNACES
GMUH UPFLOW/HORIZONTAL SERIES
GMDA DOWNFLOW SERIES

HEAT CONTROLLER

U.L. recognized fuel gas and CO (carbon monoxide) detectors are recommended in all
applications, and their installation should be in accordance with the manufacturer’s
recommendations and/or local laws, rules, regulations, or customs.

Upflow/Horizontal Models

Downflow Models

Model Number

Input (Btu)

Tons

Model Number

Input (Btu)

Tons

GMUH50-E3A

50,000

GMDA50-E3A

50,000

GMUH75-E3A

75,000

GMDA75-E4A

75,000

GMUH75-E4A

75,000

GMDA75-E3A

75,000

GMUH100-E3A

100,000

GMDA100-E3A

100,000

GMUH100-E4A

100,000

GMDA100-E5A

100,000

GMUH100-E5A

100,000

GMDA125-E5A

125,000

GMUH125-E5A

125,000

GMDA150-E5A

150,000

GMUH150-E5A

150,000

Summary of Contents for GMDA

Page 1: ...e with the manufacturer s recommendations and or local laws rules regulations or customs Upflow Horizontal Models Downflow Models Model Number Input Btu Tons Model Number Input Btu Tons GMUH50 E3A 50...

Page 2: ...el DC microamp A flame signal hot surface ignition units Correct control voltage Measure and set heat anticipator amperage Air conditioning low voltage wires connected to terminals Y C not with wire n...

Page 3: ...ause cancer or birth defects such as fiberglass insulation lead in brass and combustion products from natural gas All new equipment shipped for sale in California will have labels stating that the pro...

Page 4: ...ALLATION ADJUSTMENT AND OPERATION OF THIS UNIT READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION A...

Page 5: ...APPLIANCES SUCH AS WATER HEATERS OR BOILERS ALL JOINTS SEAMS AND OPENINGS IN THE EQUIPMENT AND DUCT MUST ALSO BE SEALED TO PREVENT DEPRESSURIZATION OF THE SPACE AND POSSIBLE MIGRATION OF COMBUSTION BY...

Page 6: ...ATE COMBUSTION AND VENTILATION AIR FOR THE FURNACE FAILURE TO DO SO CAN CREATE HAZARDOUS CONDITIONS RESULTING IN PROPERTY DAMAGE BODILY INJURY OR DEATH FROM SMOKE FIRE OR CARBON MONOXIDE WARNING NEVER...

Page 7: ...ICATION BY PROPERLY APPLYING THE APPROPRIATE INDUSTRY ACCEPTED STANDARD IF LESS THAN MINIMUM STANDARDS ARE APPLIED THE EQUIPMENT USER COULD EXPECT TO EXPERIENCE HIGHER UTILITY BILLS MAJOR COMPONENT FA...

Page 8: ...lation Codes for Gas Burning Appliances Since furnace technology and venting requirements are changing awareness of local state and federal codes and industry changes is imperative GENERAL INFORMATION...

Page 9: ...ONDI TIONS AND ARE NOT COVERED BY THE UNIT WARRANTY IN COMPLIANCE WITH RECOGNIZED CODES IT IS RECOMMENDED THAT AN AUXILIARY DRAIN PAN BE INSTALLED UNDER ALL EVAPORATOR COILS OR UNITS CONTAINING EVAPOR...

Page 10: ...T SIDE FRONT RIGHT SIDE ALTERNATE GAS CONNECTION BOTTOM RETURN AIR AIRFLOW SUPPLY AIR 26 13 16 26 5 8 24 11 32 24 11 32 19 32 9 16 24 7 16 28 1 16 26 5 8 14 3 8 11 1 2 34 1 5 8 DIA 23 15 20 D 7 8 DIA...

Page 11: ...1 32 15 5 8 23 5 8 0 0 0 1 3 6 150 lbs FIGURE 4 DOWNFLOW DIMENSIONS TOP BOTTOM 24 1 2 19 3 4 C A B D LOW VOLTAGE GAS CONNECTION ELECTRIC CONNECTION E S A R A 26 5 8 26 13 16 6 3 16 20 3 8 23 3 8 5 8 5...

Page 12: ...O NOT take return air from bathrooms kitchens furnace rooms garages utility or laundry rooms or cold areas IMPORTANT When using outside air design and adjust the system to maintain a return air temper...

Page 13: ...indoor coil on the supply air side of the furnace Insure that no air can bypass this coil 3 Connect the supply air plenum to the furnace plenum opening DOWNFLOW UNITS THE DOWNFLOW FURNACE DESIGN IS CE...

Page 14: ...uded from warranty coverage The following types of installation may require OUTDOOR AIR for combustion due to chemical exposures Commercial buildings Buildings with indoor pools Furnaces installed in...

Page 15: ...E A confined space any space smaller than shown above as unconfined must have openings into the space which are located in accordance with the requirements set forth in the following subsections A and...

Page 16: ...all equipment in the enclosure Here are typical duct sizes B Method 2 One permanent opening located within 12 inches of the top of the enclosure shall be permitted where the equipment has clearances o...

Page 17: ...the inlet air opening at the furnace must be protected from accidental blockage Install a 90 elbow pointing horizontally at the top of inlet air pipe See Figure 11 maximum of 2 45 or 90 elbows allowed...

Page 18: ...al Fuel Gas Code ANSI Z223 1 and or the Natural Gas Installation Code CSA B149 1 2 for proper installation practices NOTE Follow combustion air instructions as outlined in this manual Single wall vent...

Page 19: ...height above the highest connected equipment draft hood or flue collar 3 Must rise 1 4 per foot away from the furnace on horizontal runs and be supported with straps or hangers so it has no sags or d...

Page 20: ...xhausts so they will operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers 3 Follow the lighting instructions Place the appliance being inspected into operation Adjust t...

Page 21: ...n gas valve on the furnace Refer to Table 2 for the recommended pipe size for natural gas and Table 3 for LP gas pipe sizes IMPORTANT It is permissible to run flexible gas connector inside the unit to...

Page 22: ...s pressure of 13 w c ELEVATIONS ABOVE 2000 FT REQUIRE THAT THE FURNACE INPUT RATING BE ADJUSTED AND THAT THE SIZE OF THE BURNER ORIFICES BE RE CALCULATED BASED ON ELEVATION AND GAS HEATING VALUE THE B...

Page 23: ...re at the regulator See Table 3 NOTE Depending on the amount of LP vapor and the outdoor ambient temperature the LP storage tank may require supplemental heat to maintain proper pressure levels Ensure...

Page 24: ...t ratings apply For high altitudes elevations 8 000 and over and for any necessary major changes in the gas flow rate the orifice spud must be changed TO CHANGE ORIFICE SPUDS 1 Shut off the manual mai...

Page 25: ...1 CSA Standard C22 1 and local building codes This can be obtained from National Fire Protection Association Batterymarch Park Quincy MA 02269 WARNING WARNING ELECTRICAL WIRING thermostat lead wires...

Page 26: ...NT ONLY BOTTOM RETURNS CAN BE USED NO MORE THAN TWO FURNACES CAN SHARE THE SAME SUPPLY AND RETURN FURNACES MUST HAVE SAME HEATING AND BLOWER CAPACITY TWINNING FURNACES MUST OPERATE OFF THE SAME PHASE...

Page 27: ...per thousand ft 47 LP GAS TABLE 7 NOTE Keep any parts removed during LP conversion procedure stored with the product literature for future use LP Gas is a manufactured gas that has consistent heating...

Page 28: ...must be measured onsite with manifold pressure adjustment to ensure that an actual 10 reduction in input rate is achieved Once this field adjustment has been made the label shown in Figure 19 must be...

Page 29: ...8 48 25 000 24 000 23 000 22 000 21 000 20 000 19 000 18 000 17 000 16 000 All calculations are performed by using the first three columns of information only Before beginning any calculations determi...

Page 30: ...h es close the spark igniter energizes The induced draft blower operates for the complete heating cycle 4 After the spark igniter energizes the gas valve opens for a 8 second trial for ignition 5 The...

Page 31: ...CAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR DEATH The blower motor is wired for blower speeds required for normal operation as shown If additional blower speed taps are available speeds may be ch...

Page 32: ...to the approved temperature rise range listed on the furnace name plate See Figure 22 If the measured temperature rise is above the approved range either the air flow is too low or the manifold press...

Page 33: ...1 02 2 05 3 07 4 10 5 12 6 15 7 17 CFM L s AIR DELIVERY EXTERNAL STATIC PRESSURE INCHES kPa WATER COLUMN Note Recommended blower speeds are in bold BLOWER PERFORMANCE DATA DOWNFLOW MODELS 50K 11 x 6...

Page 34: ...ch will shut the furnace down Switches for the upflow horizontal models furnaces are located on either side of the burner cover plate and just above the burners on the blower divider panel The downflo...

Page 35: ...TE These models are not factory equipped with filters or filter rods Filters must be field installed IMPORTANT Do not operate the system for extended periods without filters A portion of the dust entr...

Page 36: ...AE 60520 01 FILTER SUPPORT ANGLE SEE ANGLE DETAIL AE 61883 01 FILTER ROD SUPPORT ANGLE AE 60520 01 FILTER SUPPORT ANGLE AE 61883 01 CUT OUT AND DRILL DETAIL FILTER AND ROD ASSEMBLY ROD FILTER SUPPORT...

Page 37: ...T EXCHANGER CAN CAUSE TOXIC FUMES TO ENTER THE HOME RESULTING IN CARBON MONOXIDE POISONING OR DEATH THE VENT PIPE OR HEAT EXCHANGER MUST BE REPLACED IF THEY LEAK IMPORTANT It is recommended that at th...

Page 38: ...limit open during ignition trial If yes go to D Check line voltage between HEAT and NEUTRAL on IFC Check wires connections and continuity between IFC and IBM Check IBM capacitor Check IBM CHECK groun...

Page 39: ...FIGURE 28 FOR MODELS WITH UT ELECTRONIC CONTROLS 1027 200 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION 39...

Page 40: ...40 CM 0810...

Search results

Summary of Contents for GMDA

Reviews:

Related manuals for GMDA

Brands by name

Popular brands

Heat Controller GMDA, Installation Instructions Manual

Search results

Summary of Contents for GMDA

Reviews:

Related manuals for GMDA

Brands by name

Popular brands