New Yorker AP-U AP-110U-N, Installation, Operating And Service Instructions

32

110839-01 - 8/20

AP-U

Installation & Service Manual

A.  WATER BOILERS:

1.

Filling of boiler and system.

GENERAL 

— 

In a hot water heating system, 

the boiler and entire system (other than the 

expansion tank) must be full of water for 

satisfactory operation. Water should be added 

to the system until the boiler pressure gauge 

registers 12 psi. To insure that the system is 

full, water should come out of all air vents when 

opened.

2.  BOILING OUT OF BOILER AND SYSTEM

.

 The 

oil and grease which accumulate in a new hot 

water boiler can be washed out in the following 

manner:
a.  Remove relief valve using extreme care to 

avoid damaging it.

b.  Add an appropriate amount of 

recommended boil out compound.

c.  Replace relief valve.
d.  Fill the entire system with water.
e.  Start firing the boiler.
f.  Circulate the water through the entire 

system.

g.  Vent the system, including the radiation.
h.  Allow boiler water to reach operating 

temperature, if possible.

i.  Continue to circulate the water for a few 

hours.

j.  Stop firing the boiler.
k.  Drain the system in a manner and to a 

location that hot water can be discharged 

with safety.

l.  Remove plugs from all available returns and 

wash the water side of the boiler as 

thoroughly as possible, using a high-

pressure water stream.

m. Refill the system with fresh water.

3.  Add appropriate boiler water treatment 

compounds as recommended by your 

qualified water treatment company.

4.  Make pH or Alkalinity Test.
  After boiler and system have been cleaned 

and refilled as previously described, test the 

pH of the water in the system. This can easily 

be done by drawing a small sample of boiler 

water and testing with hydrion paper which is 

used in the same manner as litmus paper, 

except it gives specific readings. A color chart 

on the side of the small hydrion dispenser 

gives the reading pH.  Hydrion paper is 

inexpensive and obtainable from any chemical 

supply house or through your local druggist. 

The pH should be higher than 7 but lower than 

11. Add some of the washout chemical 

(caustic soda), if necessary, to bring the pH 

within the specified range. 

5.  Boiler is now ready to be put into service.

B.  EXCESSIVE MAKE-UP WATER
 

A leaky system will increase the volume of 

make-up water supplied to the boiler, which can 

significantly shorten the life of the boiler. Entrained 

in make-up water are dissolved minerals, salts 

and oxygen. When the fresh, cool make-up 

water is heated in the boiler, the minerals fall 

out as sediment, the salts coat the inside of the 

boiler, and the oxygen escapes as a gas. The 

accumulation of sediment eventually isolates 

the water from contacting the steel. When this 

happens the steel in that area gets extremely 

hot and eventually cracks. The presence of free 

oxygen or chloride salts in the boiler creates a 

corrosive atmosphere which, if the concentration 

becomes high enough, can corrode the steel 

through from the inside. More make-up water and 

higher concentrations of contaminants damage 

the boiler sooner.  Our warranty does not cover 

corrosion and sediment-related damage

.

  Clearly 

it is in everyone’s best interest to prevent this type 

of failure. You can do your part by ensuring that 

your system is leak-free, keeping leakage to less 

than 2 percent of the total water volume each 

month.  Refer to Chart below.

IMPORTANT

IMPORTANT

IF,  DURING  NORMAL  OPERATION,  IT  IS NECESSARY  

TO  ADD  MORE  WATER  THAN INDICATED  BELOW,  

CONSULT A  QUALIFIED SERVICE  TECHNICIAN  

TO  CHECK  YOUR SYSTEM  FOR  LEAKS.

Model No.

Gallons Per 

Month

Gallons Per 

Year

AP-110U-N(T)

0.2

3

AP-154U-N(T)

0.3

4

C.  ATTENTION TO BOILER WHILE NOT IN 

OPERATION
1. IMPORTANT
  IF BOILER IS NOT USED DURING WINTER 

TIME, IT MUST BE FULLY DRAINED TO 

PREVENT FREEZE DAMAGE.

2.  Spray inside surfaces with light lubricating or 

crankcase oil using gun with extended stem so 

as to reach all corners.

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 Maintenance & Service Instructions