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5132210-UIM-H-0916

4

Johnson Controls Unitary Products

LOCATION

Use the following guidelines to select a suitable location for these units:

1.

Unit is designed for 

outdoor installation

 only.

2.

Condenser coils must have an unlimited supply of air. Where a
choice of location is possible, position the unit on either north or
east side of building.

3.

Suitable for mounting on roof curb.

4.

For ground level installation, a level pad or slab should be used.
The thickness and size of the pad or slab used should meet local
codes and unit weight. Do not tie the slab to the building foundation.

5.

Roof structures must be able to support the weight of the unit and
its options/accessories. Unit must be installed on a solid, level roof
curb or appropriate angle iron frame.

6.

Maintain level tolerance to 1/8” across the entire width and length of
unit.

CLEARANCES

All units require particular clearances for proper operation and service.
Installer must make provisions for adequate combustion and ventilation
air in accordance with section 5.3 of Air for Combustion and Ventilation
of the National Fuel Gas Code, ANSI Z223.1 – Latest Edition (in
U.S.A.), or Sections 7.2, 7.3, or 7.4 of Gas Installation Codes, CSA-
B149.1 (in Canada) - Latest Edition, and/or applicable provisions of the
local building codes. Refer to Table 4 for clearances required for com-
bustible construction, servicing, and proper unit operation.

RIGGING AND HANDLING

Exercise care when moving the unit. Do not remove any packaging until
the unit is near the place of installation. Rig the unit by attaching chain
or cable slings to the lifting holes provided in the base rails. Spreader
bars, whose length exceeds the largest dimension across the unit,

MUST

 be used across the top of the unit.

Units may be moved or lifted with a forklift. Slotted openings in the base
rails are provided for this purpose.

 WARNING

Do not attach supply and return duct work to the bottom of the unit
base pan as the drain pan could be compromised.

 WARNING

Excessive exposure of this furnace to contaminated combustion air
may result in equipment damage or personal injury. Typical contami-
nates include: permanent wave solution, chlorinated waxes and
cleaners, chlorine based swimming pool chemicals, water softening
chemicals, carbon tetrachloride, Halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks, paint removers, var-
nishes, hydrochloric acid, cements and glues, antistatic fabric soften-
ers for clothes dryers, masonry acid washing materials.

 WARNING

Do not permit overhanging structures or shrubs to obstruct con-
denser air discharge outlet, combustion air inlet or vent outlets.

!

!

!

 CAUTION

Before lifting, make sure the unit weight is distributed equally on the
rigging cables so it will lift evenly.

 CAUTION

If a unit is to be installed on a roof curb other than a Unitary Products
roof curb, gasket or sealant must be applied to all surfaces that come
in contact with the unit underside.

 CAUTION

All panels must be secured in place when the unit is lifted.

The condenser coils should be protected from rigging cable damage
with plywood or other suitable material.

 FIGURE 2:  

Unit 4 Point Load Weight

!

!

!

X

CENTER OF
GRAVITY

FRONT
OF UNIT

Y

"D"

"C"

"B"

"A"

A0295-001

COMPRESSOR

Table 2: 

Weights and Dimensions

Model

Weight (lbs.)

Center of Gravity

4 Point Load Location (lbs.)

Shipping

Operating

X

Y

A

B

C

D

24050

399

394

28

15

131

101

86

76

24075

409

404

28

15

135

103

86

80

30050

454

449

28

15

155

108

96

90

30075

458

453

28

15

161

102

90

100

36065

503

498

29

14

176

122

104

96

36100

510

505

29

14

178

123

109

95

42065

537

532

29

14

190

132

112

98

42100

539

534

29

14

191

133

109

101

48065

556

551

28

14

199

137

106

109

48100

564

559

28

14

194

141

117

107

48125

569

564

29

14

193

146

126

99

60065

582

577

29

14

199

151

127

100

60100

586

581

28

14

201

152

123

105

60125

593

588

27

15

202

151

125

110

Summary of Contents for PHG4 Series

Page 1: ...or installation Only gas piping electric power and duct connections are required at the point of installation The gas fired heaters have spark ignition The refrigerant system is fully charged with R 4...

Page 2: ...mproper installation adjustment alteration service or mainte nance can cause injury or property damage Refer to this manual For assistance or additional information consult a qualified installer servi...

Page 3: ...o a unit to meet local codes they are to be installed at the dealer s and or customer s expense Size of unit for proposed installation should be based on heat loss heat gain calculation made according...

Page 4: ...are provided for this purpose WARNING Do not attach supply and return duct work to the bottom of the unit base pan as the drain pan could be compromised WARNING Excessive exposure of this furnace to...

Page 5: ...ection Distance in Direction Distance in Top3 3 Units must be installed outdoors Over hanging structure or shrubs should not obstruct condenser air discharge outlet 36 Power Entry Right Side 36 Side O...

Page 6: ...n the return air ductwork or install a Filter Frame Kit A filter rack and high velocity filters are standard on three phase units Filters must always be used and must be kept clean When filters become...

Page 7: ...rate branch circuit fed directly from the main distribution panel and properly fused Refer to Figures 7 and 8 for typical field wiring and to the appropriate unit wiring diagram for control circuit an...

Page 8: ...51 1 4 Width 35 3 4 35 3 4 45 3 4 45 3 4 45 3 4 45 3 4 Height 47 49 49 49 53 55 Operating WT lbs 394 404 449 453 498 505 532 534 551 559 564 577 581 588 Compressors Type Scroll Scroll Scroll Scroll Sc...

Page 9: ...5 The gas supply should be a separate line and installed in accor dance with all applicable safety codes After the gas connections have been completed open the main shut off valve admitting nor mal ga...

Page 10: ...leaks to check all connections A fire or explosion may result causing property damage personal injury or loss of life Table 9 High Altitude Gas Orifice Sizing ELEVATION ABOVE SEA LEVEL FEET GAS TYPE...

Page 11: ...864 780 Medium High 4 1349 1297 1265 1224 1185 1146 1107 1063 975 High 5 1487 1462 1392 1331 1318 1281 1241 1201 1121 30050 Low 1 700 657 599 554 512 461 411 365 273 Low Medium 2 906 868 825 779 735...

Page 12: ...1858 1807 1749 1710 1667 1629 1589 1546 1460 Medium 3 2054 1998 1934 1890 1843 1801 1757 1710 1616 Medium High 4 2195 2144 2098 2049 2003 1955 1883 1868 1838 High 5 2445 2388 2306 2293 2235 2178 2129...

Page 13: ...w 1 1032 999 970 938 910 879 843 808 737 Low Medium 2 1272 1236 1204 1165 1129 1081 1037 968 829 Medium 3 1611 1574 1518 1494 1439 1405 1357 1266 1083 Medium High 4 1892 1777 1771 1701 1639 1617 1565...

Page 14: ...ings are selected If the heat pump and gas heating sections are run at the same time HI LIMIT trips may occur A Y call without an O call from the indoor thermostat is primary heat pump heat A W call f...

Page 15: ...frost cycle is initiated A temperature inhibit feature prohibits defrost if the coil temperature is above 40 F A forced defrost feature puts the system into a defrost period every 6 hours and 4 minute...

Page 16: ...g 8 on the LED Post Purge The control board runs the induced draft motor for a 15 second post purge period and then de energizes the inducer If a call for heat occurs during post purge the control fin...

Page 17: ...hich automatically lights the burners 5 Remove the access panel 6 Turn the gas valve switch to the OFF position 7 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the in...

Page 18: ...within the range shown on the rating plate and the data in Table 6 After the temperature rise has been determined the CFM can be calcu lated as follows Direct Drive Blower All units have direct drive...

Page 19: ...as in your particular locality Contact your gas company for this information since it varies widely from city to city Table 19 Gas Rate Cubic Feet Per Hour1 Seconds for9 One Rev Size of Test Dial 1 2...

Page 20: ...VOLTAGE 19 2 VAC PREVENTING FURTHER RELAY OUTPUTS FOR 2 SECONDS LOW VOLTAGE 16 VAC STOPPED CURRENT RELAY OUTPUTS FOR 2 SECONDS LIQUID LINE SENSOR FAILURE OPEN OR SHORTED OUTDOOR AMBIENT SENSOR FAILUR...

Page 21: ...EVENTING FURTHER RELAY OUTPUTS FOR 2 SECONDS LOW VOLTAGE 16 VAC STOPPED CURRENT RELAY OUTPUTS FOR 2 SECONDS LIQUID LINE SENSOR FAILURE OPEN OR SHORTED OUTDOOR AMBIENT SENSOR FAILURE OPEN OR SHORTED CO...

Page 22: ...Manifold sets must be at least 700 psig high side and 180 psig low side with 550 psig retard All hoses must have a service pressure rating of 800 psig Leak detectors must be designed to detect HFC re...

Page 23: ...le timer Measured voltage L1 to L2 L2 to L3 L1 to L3 Total amperes L1 L2 L3 Compressor amperes L1 L2 L3 Measured voltage R and C outdoor unit control board Electrical Connections Inspection Check all...

Page 24: ...U H Measured BTU H Clock Gas Meter Nat Gas Supply Air Dry Bulb Temp Temp Rise Return Air Dry Bulb Temp Manifold Pressure at 100 Firing Rate w c Inlet Gas Pressure w c LP Gas Conversion Kit LP Conversi...

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