![background image](http://html1.mh-extra.com/html/airmark/gbw-series/gbw-series_installation-manual_2878440011.webp)
11
Ensure that motor is pre-loaded with program from factory.
16. Start-Up
The hot water (hydronic) coil and all wa-
ter lines MUST be purged of air prior to
starting the pump. Failure to do so could
result in pump damage. Airmark will not be responsible for
any property or personnel damage caused by failure to fol-
low this instruction.
!
WARNING
5.
If the static pressure is above .5” wc, excessive turbu-
lence or duct friction needs to be reduced. (Obstructions in
the duct system can also cause excessive static pressure.)
6.
When proper air volume is established, move on to the charging
procedure.
After all connections are made, start-up and checkout must be per-
formed before proper evaluation of the entire system can be made.
Make sure that heat anticipator is properly set as noted on thermo-
stat instructions. Load requirements can vary in each residence and
it may be necessary for the installer or homeowner to make slight ad-
justments to the heat anticipator setting for longer or shorter cycles.
It is recommended to change the setting no more than plus or minus
0.05 amps at a time. Greater changes can cause the unit to rapid
cycle or remain on excessively. Measure anticipator circuit current
with electric heaters energized and set anticipator to proper level.
15. Adjustment Of Heat Anticipator
1.
Bring airflow up to the maximum CFM possible according to Table
13-1.
2.
Evacuate refrigeration system to micron level required by outdoor
unit manufacturer.
3.
Release system charge from outdoor unit and call for cooling.
4.
Use outdoor unit equipment manufacturer specific charging charts
if available and make proper charge adjustment based upon outdoor
unit instructions.
5.
If outdoor unit instructions and charts are not available, use Air-
mark provided charts. Make certain indoor air temperature is near
comfort level setpoint 75F, prior to establishing superheat and sub-
cooling levels.
14. System Charging
An improperly charged system may cause
degradation in system performance and
damage the compressor. After installation
of the coil, refer to the outdoor unit manufacturer for charging
techniques and amount of charge. If outdoor unit manufacturers
charging instructions are unavailable; then refer to instructions
below to charge the system.
CAUTION
!
Hot water flowing to the coil should be in
the range of 120º - 180º F. Water at these
temperatures can cause first-degree
burns. Use of proper safety gear while installing or servicing
the equipment is strongly recommended as is installation
of a water-tempering valve (for water temperatures of above
140ºF) to supply lower temperature water to fixtures in the
house. N170L series or equivalent should be used.
!
WARNING
Connect the hydronic coil to the water heater system as shown in Fig
16-1 and 16-2. Use flexible piping and insulate all pipes. Plumbing
must be in compliance with state or local codes (Code CMR248 in
Massachusetts). The units for hydronic heat have different top and
heater box configurations. This configuration is not suitable for elec
-
tric heat. DO NOT try to install hydronic heater in a unit not equipped
for it. Verify connections: hot water to “in” and cold water to “out”.
7/8” ODstubs are provided for plumbing connections (Fig 16-3 and
16-4. Bleed the air flow system through the bleeder port (Fig 16-5)
or optional valve.
Fig 16-1.
Fig 16-2.
Add refrigerant until the superheat measured at the outdoor unit suc-
tion/vapor line matches the superheat from the chart below.
14A . Flowrator Coils
Add refrigerant until the subcooling measured at the outdoor unit
liquid line matches the subcooling recommendation of the outdoor
manufacturer. If chart is unavailable charge the unit to a subcooling
value of 8ºF +/- 1ºF.
Table 15B-1.
14B . Expansion Valve Coils
Outdoor
Temp
Superheat
°F D.B.
Min
Nom
Max
65
30
35
40
70
26
30
34
75
21
25
29
80
17
20
23
85
12
15
18
90
8
10
12
95
4
5
7
100
Installer MUST open water lines and run
system to a.) ensure pump is primed and
waterflow is constant and b.) ensure there
are no leaks in the coils, connections, and/or water piping.
Failure to do so could result in water leaks and property
damage. AirMark will not be responsible for any damage
caused by failure to follow this instruction.
!
WARNING
Содержание GBW Series
Страница 16: ...16 23 Massachusetts Applicable Installation Diagram ...
Страница 18: ...18 25 Massachusetts Applicable Installation Diagram ...
Страница 19: ...19 ...