WSHP-PRC001-EN
13
Boilerless Control/Electric Heat
Heating/Cooling Mode
In heating mode, when the water tem-
perature falls below 55 F (factory set-
ting), the electric heater
is energized, locking
out the compressor.
The systems electric
heat source will continue to be
utilized for primary
heating until
the loop
tempera-
ture rises
above 60 F.
Once the
entering water tempera-
ture rises above 60 F, the boiler-
less controller returns the unit to
normal compressor heating opera-
tion and locks out the electric heater.
This maximizes efficiency from the
unit during the few days requiring
heat from the mechanical system. See
Figure 21
for the factory mounted
and wired boilerless control electric
heat water-source heat pump. Avail-
able on the 1/2 through 5-ton equip-
ment ONLY as a single point power
connection.
If the unit employs a cooling only unit
design, the electric heat contactor is
wired directly to the thermostat for
primary heating, and the compressor
contactor for cooling.
Note: For geothermal applications,
the boilerless controller has an adjust-
able setting of 25, 35, 45, 55 and 60
degrees.
What is NOT available with the boilerless electric heat option?
Hot gas reheat
Basic 24 volt controls
Tracer
TM
ZN510 controls
115 and 575 volt ratings
Supplemental or emergency heat applications
And, a factory installed heater (applies to unit sizes 12 1/2 through 25-ton
ONLY)
Features and
Benefits
1
2
3
4
5
6
Figure 21: Boilerless control, electric heat water-source heat pump
Summary of Contents for Axiom GEH006
Page 107: ...WSHP PRC001 EN 107 Control Wiring Basic 24V 1 PH 208V 60HZ 1PH ...
Page 108: ...108 WSHP PRC001 EN Control Wiring Deluxe 24V 3 PH 208V 60HZ 3PH ...
Page 109: ...WSHP PRC001 EN 109 Control Wiring Tracer ZN510 1PH 208V 60HZ 1PH ...
Page 110: ...110 WSHP PRC001 EN Dimensional Data Tracer ZN524 3PH 460V 60HZ 3PH ...
Page 123: ...WSHP PRC001 EN 123 Dimensional Data Front Return Back Supply 12 1 2 15 Ton ...
Page 124: ...124 WSHP PRC001 EN Dimensional Data Back Return Front Supply 12 1 2 15 Ton ...
Page 125: ...WSHP PRC001 EN 125 Dimensional Data Front Return Top Supply 12 1 2 15 Ton ...
Page 126: ...126 WSHP PRC001 EN Dimensional Data Back Return Top Supply 12 1 2 15 Ton ...