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Installation Instructions

GAS-FIRED AIR CONDITIONER

451P

SIZE 108

SERIES B

bri|ant

39451D8

Rev. 4/12/65

Installation of the Model 108-451 Gas Air Conditioning Absorption Unit consists of the following steps:

I. Locate and Mount Absorption Unit VI. Check-Out and Operation

II. Connect Chilled Water Lines VII. Adjust Gas Input

III. Electrical Connections VIII. Balance System

IV. Gas Connections IX. Purge Non-Condensibles

V. Charge System with Water

Each of the above steps is discussed in detail in this instruction. Read the eiitin

starting installation.

^^^s^u(^ton ^^or

P V

I. LOCATE AND MOUNT ABSORPTION UNIT

The absorption unit may be located at ground level

or on the roof. Consult local codes for information

concerning proximity to property lines, height above

roof, obstructions, etc.

A. MOUNTING BASE

1. Use non-combustible materials.

2. Suggested types of mounting base for ground

installation:

a. Precast concrete lintels.

Use three lintels the depth of unit, one each

urider right and left end of unit and one at center

of unit.

b. Concrete blocks.

Use one block at each corner of unit plus blocks

under the two long sides midway between the

corner blocks.

c. Concrete slab.

Minimum thickness 4 inches.

3. For installation on a roof or other combustible

material leave sufficient clearance between unit

sub-base and roof for proper air circulation. Use

precast concrete lintels or concrete blocks as

described in paragraph 2 above or steel beams.

Check local codes.

DO NOT

REMOVE

hax&-.a_m.i.aijn.um—clear

B. CLEARANCES

1. Absorption unit should

ance of 2 feet on all sides from any adjacent ob

struction.

2. Avoid locating the unit where hot condenser

discharge air can impinge on nearby obstructions

and mix with the inlet air supply. The condenser air

discharges upward. The unit should be located out

side of the plumb line from any over-hang.

II. CONNECT CHILLED WATER LINES

A. MATERIALS

Refer to section on “Freezing Weather Protection”

at the end of this instruction.

1. Piping

a. Polyethylene Plastic Pipe — use medium

density flexible pipe whose wall thickness ap

proximates Schedule 40 pipe (Commercial Stand

ard CS 197-60). Pipe must be virgin plastic. Do

not use pipe manufactured from re-claimed plas

tic.

b. Copper - satisfactory substitute.

c. Galvanized - satisfactory substitute.

2. Fittings

a. Galvanized - use when possible.

b. Brass - satisfactory substitute.

c. Nylon - satisfactory substitute.

Summary of content (11 pages)

PAGE 1
451P Installation Instructions GAS-FIRED AIR CONDITIONER SIZE 108 SERIES B bri|ant I 39451D8 Rev. 4/12/65 Installation of the Model 108-451 Gas Air Conditioning Absorption Unit consists of the following steps: I. Locate and Mount Absorption Unit VI. Check-Out and Operation II. Connect Chilled Water Lines VII. Adjust Gas Input III. Electrical Connections VIII. Balance System IV. Gas Connections IX. Purge Non-Condensibles V.
PAGE 2
WATER OUTLET ELECTRICAL CONNECTIONS 1" I" KNOCKOUTS 2 GAS CONNECTION WATER INLET 1” IZ F.P.T. BTUH BTUH CFM GPM Ft. Head Ft.
PAGE 3
Table I Nominal Pipe Size Inches Allowable Distance* Between Coil and Chiller Polyethylene Pipe Copper Pipe Galvanized Pipe Size 108 Size 108 Size 108 1 IVa IV2 48' 272' 610' 67' 72' 210' 492' 285' 642' * Note: Values shown in above table are for one direction only. The total length of pipe from chiller to coil and return would be double the above table values. The above table applies to single unit installations only. B.
PAGE 4
PILOT 5. Figures 3 & 4 are the Wiring Diagrams for the natural gas unit. Figures 5 8s 6 are the Wiring Dia grams for an LPG unit. The natural gas unit is equipped with two reignition type pilots (one pilot in each generator). The pilots will light automatically when supplied with gas and are electrically energized. The circuit is arranged to light the pilots sequentially. Several minutes must be allowed for the first pilot to ignite and make contact before second pilot will be energized. 6.
PAGE 5
FILLER CAP \ ,.y FILLER CAP bleed valve located on top of the pump discharge. Open valve with screwdriver. Close valve when the trapped air is removed and water appears. 6. Remove operating level drain plug of either chiller and continue to operate pump until water stops flowing from drain opening. 7. Turn off pump. Make pipe connection to chiller inlet. 8. Replace operating level drain plug finger tight. Add several gallons of water to tanks to raise water level above drain opening. 9. Start pump.
PAGE 6
4. Check indoor fan operation by turning thermo stat fan switch to ‘on’ for continuous fan operation. Move thermostat above room temperature and observe that the indoor fan remains on. 5. To place the system in operation, open the main manual gas valve, replace all panels, and set the thermostat at the desired temperature.
PAGE 7
IX. PURGE NON-CONDENSIBLES FREEZING WEATHER PROTECTION Purging is accomplished through valves A on inlet tanks and valves D on purge pots. Each refrigera tion circuit must be checked. Operate unit for a minimum of 15 minutes. While still operating, proceed as follows: 1. Attach adapter and purge line to valve A. 2. Run purge line to bucket of water. 3. Remove cap and open valve A about 1/8 to 1/4 turn. 4. If non-condensibles are present, bubbles will rise to the surface of the water in the bucket. 5.
PAGE 8
o OQ Oi Figure 3 - Unit Wiring Natural Gas With Reignition Control Box A
PAGE 9
SCHEMATIC WIRING DIAGRAM CONTROL BOX'S' X OF 108-451 BLUE BROWN YELLOW BLACK BROWN m X 1• HIGH PRESS. CUTOUT Y 1» G (» \ HIGH TEMP. CUTOUT R 1f / o 0 GAS VALVE --------------------y----------------TO CONTROL BOX NO. A YELLOW BLACK BLUE REIGNITION PILOT SWITCH GAS PRESSURE SWITCH FACTORY LINE VOLTAGE FACTORY LOW VOLTAGE ' 1. PRESSURE SWITCHES 10. THERMOSTAT 2. PILOT 11. HI-TEMP RELAY 3. GLOW COIL 12. HI-TEMP CUTOUT 4. GAS PRESS. SW. 13. FAN MOTOR 5. RESISTOR 14. PUMP MOTOR 6. GAS VALVE 15.
PAGE 10
o 00 4^ cn Figure 5 - Unit Wiring LP Gas - Control Box A No Reignition
PAGE 11
SCHEMATIC WIRING DIAGRAM ! CONTROL BOX "B' OF 108-451 X m- 12B; 12A BROWN YELLOW BLACK BROWN YELLOW 11 I “I oR 9 ^ ;:i0 OY HIGH PRESSURE CUTOUT •------ 18 IB : 16A \ 2A / J 6B # 1À en L_ J HI PRESS. VALVE ■ o0 HIGH TEMP CUTOUT GAS VALVE K> Y-------------TO CONTROL BOX NO. A YELLOW BLACK PILOT SWITCH FACTORY LINE VOLTAGE FACTORY LOW VOLTAGE 17 2B r— •1 IT L____ ■ G 1. 2. 3. 4. 5. 6. 7. 8. 9. PRESSURE SWITCHES PILOT GLOW COIL GAS PRESS. SW.