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Installation Instructions

ALL WEATHER HEATING & COOL!!^iG

378

Series B

bpi|ont

39378 D9

5/10/65

GENERAL

The Model 378 is approved by the American &

Association for:

1. Use with natural, mixed, and propane gases.

2. Outdoor installation

a. On a roof

b. At ground level

3. Indoor installation (when equipped with Bryant

draft hood assembly. Part No, 36154C8 and special

front door in place of door furnished.)

a. Attic

b. Basement, utility room, etc.

4. Use with 36W, 54W, 90W, and 108W water coils.

5. Use with 48R, 60R, 90R, and 120R direct expan

sion coils.

INSPECTION

Be sure available gas supply is the same as shown

on American Gas Association rating plate.

Check electric supply - voltage, phase, and fre

quency - to be sure that it is the same as required

on the rating plate. Check to be sure that adequate

power is available to handle the increased electri

cal load when the unit is used for cooling.

Installation of the all-weather heating and cooling

unit consists of the following:

1. Locating the Unit

2. Gas Piping

3. Venting

4. Electric Connections

5. Start-up and Adjustment

6. Connection with Electric Air Conditioner (when

used)

7. Connection with Gas Air Conditioner (when

used)

LOCATING THE UNIT

When installing in conjunction with a cooling sys

tem refer to the applicable section of this instruc

tion for additional information.

Before locating the unit, refer to local codes.

OUTDOOR INSTALLATION

Mounting

The unit design permits use of four corner posts,

rails, or any other method of support sufficiently

strong to accommodate the weight; however, consult

local codes - particularly for roof installation.

Units must be level.

Clearances

1. Provide a minimum 1 inch clearance on bottom

for water drainage (rain, sleet, and snow).

Summary of content (11 pages)

PAGE 1
378 Installation Instructions Series B bpi|ont ALL WEATHER HEATING & COOL!!^iG 39378 D9 5/10/65 GENERAL The Model 378 is approved by the American & Association for: 1. Use with natural, mixed, and propane gases. 2. Outdoor installation a. On a roof b. At ground level 3. Indoor installation (when equipped with Bryant draft hood assembly. Part No, 36154C8 and special front door in place of door furnished.) a. Attic b. Basement, utility room, etc. 4. Use with 36W, 54W, 90W, and 108W water coils. 5.
PAGE 2
m 3; co 00 378 ALL WEATHER INDOOR/OUTDOOR UNIT 48R-378 60R-378 Heating input Btuh 150-100,000 150-100,000 Bonnet capacity Btuh 112-75,000 DX Coil rating Water Coil rating Btuh Btuh CFM In. water Air flow External static Blower motor 54W-378 90R-378 150-100,000 150-100,000 300-200,000 300-200,000 ■ 300-200,000 300-200,000 112-75,000 112-75,000 112-75,000 225-150,000 225-150,000 225-150,000 48,000 — 60,000 36,000 1600 0.20 2000 1200 54,000 1800 225-150,000 90,000 — 0.
PAGE 3
Outdoor Installation - Clearances (cont’d) 2. Provide adequate clearance for outlet and return duct connections. 3. Clearance from combustibles: From casing, all sides and top 6" * From base ............................... 0” *This permits use of combustible material as sup port. Caution: When using rails, etc. as support, do not enclose unit so as to interfere with drainage.
PAGE 4
8. If more than oiie appliance is vented into the same chimney, the cross-sectional area of the chim ney must be as large as the largest flue pipe being connected, plus 50 per cent of the cross-sectional areas of the additional flue pipes being connected. VENTING INDOOR INSTALLATION Consult local codes. Unless the local codes direct otherwise, the unit may be vented to a permanent chimney, or to a listed Type B or Type C gas vent. To install indoor draft hood: 9.
PAGE 5
3. Thermostat connections for heating only are to be made at terminals 4 and W. See Figure 3 for low voltage connections when cooling equipment is used. unit. The limit will shut off the main gas if the temperature goes too high. The limit may be checked by removing the fan belt and firing the unit. The burners should shut in a few minutes. 4. A separate, fused, electrical line should be run for this installation. 3.
PAGE 6
Determine gas input as follows: a. b. TABLE Divide 3600 by the nuniber of seconds in Item (a) above. c. Multiply result of Item (b) by the number of cubic feet shown for one revolution of the test dial. This gives you cubic feet per hour of gas flow. d. Multiply result of Item (c) by the heating value of the gas in BTU (consult local util ity for value). This gives you the total meas ured input in BTUH. Compare this value with that on your rating plate. Input Btu Temperature Rise Air per hr.
PAGE 7
CONNECTING CONDENSING UNIT TO R TYPE MODEL 378 The evaporator coil is supplied as an integral part of the “R” Type 378 unit. The condensing unit may be installed remotely or adjacent to the “R” Type 378 unit. 5. Uncoil capillary line of Expansion valve and attach sensing bulb to top of horizontal suction line inside of unit casing. Wrap bulb with prestite tape (shipped with unit as a loose part). 6. Connect coil to condensing unit per instructions packaged with the condensing unit. 7.
PAGE 8
Winter Shut-Down Protection (continued) MAINTENANCE Winter shut-down protection can be provided as follows: 1. With the pump circulating water with additive (borax), add one gallon of methanol (uninhibited methyl alcohol) for each 20 gallons of water or fraction thereof, and circulate for ten minutes. 2. It is not necessary to drain the system, LUBRICATION Blower Motor - if equipped with oil cups, oil motor bearings with SAE10-20 non-detergent oil each heating and cooling season.
PAGE 9
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THIS APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH SAME OR EQUIVALENT WIRE: LOW VOLTAGE WIRES—18 A.W.G. 4/64THK. 600V. I05“C. INSULATION LINE VOLTAGE WIRES—14 A.W.G. 5/64 THK, 600V. I05®C. INSULATION S.P.D.T. LIMIT SWITCH WIRES--» A.W.G. 2/64 THICK 600V. I50**C. INFLATION IF THIS APPLIANCE IS CONVERTED TO PROPANE GAS THE INSTALLATION WILL NOT BE COMPLETE UNLESS THIS WIRING LABEL IS REPLACED WITH THE WIRING LABEL SUPPLIED WITH CONVERSION KIT.
PAGE 10
LIMIT SWITCH S. P. D. T. COMBUSTION AIR BLOWER MOTOR 208/230 VOLTS 60 CYCLE SINGLE PHASE CURRENT DRAW LESS THAN 12 AMPERES -------- FACTORY LOW VOLTAGE --------FIELD LOW VOLTAGE —— FACTORY LINE VOLTAGE -—FIELD LINE VOLTAGE ONE PILOT RELAY TWO PILOT RELAYS IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THIS APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH SAME OR EQUIVALENT WIRE-* LOW VOLTAGE WIRE I8A.W.6. 4/64 THICK 600V. I05»C. INSULATION. LINE VOLTAGE WIRE------------- I4A.W.G.
PAGE 11
LOW VOLTAGE TERMINAL STRIP ON CONDENSING UNIT LOW VOLTAGE TERMINAL STRIP ON 378 UNIT Figure 3 - Low Voltage Wiring EH 378 - 11 -