Operating instructions

Part number 550-141-887/0800
21
AHE Series 4 Direct Vent Wall-Mounted Boilers — Boiler Manual
9 Checkout procedure
❏ Boiler and heat distribution units filled with water or
antifreeze solution?
❏ Automatic air vent cap open two full turns during air purging
procedure, then closed and opened one turn?
❏ Air purged from system?
❏ Air purged from gas piping? Piping checked for leaks?
❏ Followed operating instructions on boiler or in Manual
Section 10c, pages 24-25, for proper start-up?
❏ Proper burner flame observed? Refer to “Check burner
flames”, Manual Section 8a, page 20.
❏ Test limit control — While burners are operating, move
indicator on limit control below actual boiler water
temperature. The blower and burners should go off while
circulator continues to operate. Raise setting on limit control
above boiler water temperature and burners should reignite.
❏ Test additional field-installed controls — Test additional high
limits or other controls, test for operation as outlined by
manufacturer. Burners should be operating and should go
off when controls are tested. When controls are restored,
burners should reignite.
❏ Test ignition system safety device:
a. Connect voltmeter to outlet side of gas valve.
b. Start boiler, allowing for normal start-up cycle to occur
and main burners to ignite.
c. With main burners on, manually shut off gas supply at
manual main shutoff gas valve. Burners should go off.
d. Open manual main shutoff gas valve. Manometer
should confirm there is no gas flow.
e. Pilot will relight, flame sensing element will sense pilot
flame and main burners will reignite.
❏ Set limit control(s) to system temperature requirements.
Adjust balancing valves and controls to provide design
temperature to system.
❏ Verify thermostat heat anticipator set properly? Refer to
“Thermostat” on page 19, and wiring diagram on jacket door
or in manual page 23.
❏ Cycle boiler with thermostat — Raise to highest setting and
verify boiler goes through normal start-up cycle. Lower to
lowest setting and verify boiler goes off.
❏ Measure natural gas input:
a. Operate boiler 10 minutes.
b. Turn off other appliances.
c. At natural gas meter, measure time (in seconds) required
to use one cubic foot of gas.
d. Calculate gas input:
3600 x 1000
number of seconds from step c
= Btuh
e. Btuh calculated should approximate input rating on
boiler rating label.
❏ Check manifold gas pressure by connecting manometer to
downstream test tapping on main gas valve. Manifold
pressure for natural gas should be 3.5" w.c. and for propane
gas should be 10" w.c.
❏ Observe several operating cycles for proper operation.
❏ Set room thermostat to desired room temperature.
❏ Fill in “Installation and service certificate” below?
❏ Review all instructions shipped with this boiler with owner
or maintenance person. Return instructions to envelope and
give to owner or place in pocket inside front panel in boiler.
Boiler model __________________ Series __________ CP number ___________ Date installed _______________
Measured Btuh input ____________
Installer ________________________ ________________________________ ______________________________
(company) (address) (phone)
_____________________________________
(installer’s signature)
Installation and service certificate
❏ Installation instructions have been followed.
❏ Check out sequence has been performed.
❏ Above information is certified to be correct.
❏ Information received and left with owner/maintenance person